Knowledge (XXG)

Wirtinger derivatives

Source 📝

5660: 2327: 1856: 5079: 4905: 5655:{\displaystyle {\begin{aligned}{\frac {\partial }{\partial z_{i}}}\left(f\circ g\right)&=\sum _{j=1}^{n}\left({\frac {\partial f}{\partial z_{j}}}\circ g\right){\frac {\partial g_{j}}{\partial z_{i}}}+\sum _{j=1}^{n}\left({\frac {\partial f}{\partial {\bar {z}}_{j}}}\circ g\right){\frac {\partial {\bar {g}}_{j}}{\partial z_{i}}}\\{\frac {\partial }{\partial {\bar {z}}_{i}}}\left(f\circ g\right)&=\sum _{j=1}^{n}\left({\frac {\partial f}{\partial z_{j}}}\circ g\right){\frac {\partial g_{j}}{\partial {\bar {z}}_{i}}}+\sum _{j=1}^{n}\left({\frac {\partial f}{\partial {\bar {z}}_{j}}}\circ g\right){\frac {\partial {\bar {g}}_{j}}{\partial {\bar {z}}_{i}}}\end{aligned}}} 2322:{\displaystyle {\begin{cases}{\frac {\partial }{\partial z_{1}}}={\frac {1}{2}}\left({\frac {\partial }{\partial x_{1}}}-i{\frac {\partial }{\partial y_{1}}}\right)\\\qquad \vdots \\{\frac {\partial }{\partial z_{n}}}={\frac {1}{2}}\left({\frac {\partial }{\partial x_{n}}}-i{\frac {\partial }{\partial y_{n}}}\right)\\\end{cases}},\qquad {\begin{cases}{\frac {\partial }{\partial {\bar {z}}_{1}}}={\frac {1}{2}}\left({\frac {\partial }{\partial x_{1}}}+i{\frac {\partial }{\partial y_{1}}}\right)\\\qquad \vdots \\{\frac {\partial }{\partial {\bar {z}}_{n}}}={\frac {1}{2}}\left({\frac {\partial }{\partial x_{n}}}+i{\frac {\partial }{\partial y_{n}}}\right)\\\end{cases}}.} 4514: 2914: 4900:{\displaystyle {\begin{aligned}{\frac {\partial }{\partial z}}(f\circ g)&=\left({\frac {\partial f}{\partial z}}\circ g\right){\frac {\partial g}{\partial z}}+\left({\frac {\partial f}{\partial {\bar {z}}}}\circ g\right){\frac {\partial {\bar {g}}}{\partial z}}\\{\frac {\partial }{\partial {\bar {z}}}}(f\circ g)&=\left({\frac {\partial f}{\partial z}}\circ g\right){\frac {\partial g}{\partial {\bar {z}}}}+\left({\frac {\partial f}{\partial {\bar {z}}}}\circ g\right){\frac {\partial {\bar {g}}}{\partial {\bar {z}}}}\end{aligned}}} 3814: 2597: 4203: 3529: 1537: 5974: 2909:{\displaystyle {\begin{aligned}{\frac {\partial f}{\partial z}}&={\frac {1}{2}}\left({\frac {\partial f}{\partial x}}-i{\frac {\partial f}{\partial y}}\right)\\&={\frac {1}{2}}\left({\frac {\partial u}{\partial x}}+i{\frac {\partial v}{\partial x}}-i{\frac {\partial u}{\partial y}}+{\frac {\partial v}{\partial y}}\right)\\&={\frac {\partial u}{\partial z}}+i{\frac {\partial v}{\partial z}}={\frac {df}{dz}}\end{aligned}}} 3926: 3809:{\displaystyle {\begin{aligned}{\frac {\partial }{\partial z_{i}}}\left(\alpha f+\beta g\right)&=\alpha {\frac {\partial f}{\partial z_{i}}}+\beta {\frac {\partial g}{\partial z_{i}}}\\{\frac {\partial }{\partial {\bar {z}}_{i}}}\left(\alpha f+\beta g\right)&=\alpha {\frac {\partial f}{\partial {\bar {z}}_{i}}}+\beta {\frac {\partial g}{\partial {\bar {z}}_{i}}}\end{aligned}}} 1348: 5762: 4198:{\displaystyle {\begin{aligned}{\frac {\partial }{\partial z_{i}}}(f\cdot g)&={\frac {\partial f}{\partial z_{i}}}\cdot g+f\cdot {\frac {\partial g}{\partial z_{i}}}\\{\frac {\partial }{\partial {\bar {z}}_{i}}}(f\cdot g)&={\frac {\partial f}{\partial {\bar {z}}_{i}}}\cdot g+f\cdot {\frac {\partial g}{\partial {\bar {z}}_{i}}}\end{aligned}}} 1844: 876: 1532:{\displaystyle {\begin{aligned}{\frac {\partial }{\partial z}}&={\frac {1}{2}}\left({\frac {\partial }{\partial x}}-i{\frac {\partial }{\partial y}}\right)\\{\frac {\partial }{\partial {\bar {z}}}}&={\frac {1}{2}}\left({\frac {\partial }{\partial x}}+i{\frac {\partial }{\partial y}}\right)\end{aligned}}} 5969:{\displaystyle {\begin{aligned}{\overline {\left({\frac {\partial f}{\partial z_{i}}}\right)}}&={\frac {\partial {\bar {f}}}{\partial {\bar {z}}_{i}}}\\{\overline {\left({\frac {\partial f}{\partial {\bar {z}}_{i}}}\right)}}&={\frac {\partial {\bar {f}}}{\partial z_{i}}}\end{aligned}}} 1658: 3026: 700: 283: 1258: 2922: 3236: 1839:{\displaystyle \mathbb {C} ^{n}=\mathbb {R} ^{2n}=\left\{\left(\mathbf {x} ,\mathbf {y} \right)=\left(x_{1},\ldots ,x_{n},y_{1},\ldots ,y_{n}\right)\mid \mathbf {x} ,\mathbf {y} \in \mathbb {R} ^{n}\right\}.} 4321: 3081: 5029: 4281: 1137:, is considerably simplified and consequently easier to handle. The paper is deliberately written from a formal point of view, i.e. without giving a rigorous derivation of the properties deduced. 952: 5767: 5084: 4519: 3931: 3534: 2602: 1353: 1615: 480: 4973: 2407: 4398: 4502: 871:{\displaystyle {{\frac {\partial g}{\partial {\bar {z}}}}(z_{0})}\mathrel {\overset {\mathrm {def} }{=}} \lim _{r\to 0}{\frac {1}{2\pi ir^{2}}}\oint _{\Gamma (z_{0},r)}g(z)\mathrm {d} z,} 4361: 6313: 4464: 3876: 685: 155: 6451: 3453: 3124: 2489: 5716: 6992:"Über die Krümmung von Niveaukurven bei der konformen Abbildung einfachzusammenhängender Gebiete auf das Innere eines Kreises. Eine Verallgemeinerung eines Satzes von E. Study." 7291: 3374: 3335: 143: 2589: 1145:
Despite their ubiquitous use, it seems that there is no text listing all the properties of Wirtinger derivatives: however, fairly complete references are the short course on
7651:, Graduate Texts in Mathematics, vol. 122 (Fourth corrected 1998 printing ed.), New York–Berlin–Heidelberg–Barcelona–Hong Kong–London–Milan–Paris–Singapore–Tokyo: 6349: 3479: 5754: 5067: 3914: 3521: 360: 6517:
aspects: however, in the introductory sections, Wirtinger derivatives and a few other analytical tools are introduced and their application to the theory is described.
1071: 3293: 6856:(1911), "Sulle ipersuperficie dello spazio a 4 dimensioni che possono essere frontiera del campo di esistenza di una funzione analitica di due variabili complesse", 1293: 6603: 6551: 2523: 2361: 1572: 1016: 6379: 640: 3262: 386: 6403: 6143: 2451: 1333: 1313: 980: 406: 306: 7136: 7094: 6655: 1182: 7605: 7265: 6692:" (free translation of the title) is the first paper where a set of (fairly complicate) necessary and sufficient conditions for the solvability of the 6893:
On the hypersurfaces of the 4-dimensional space that can be the boundary of the domain of existence of an analytic function of two complex variables
3021:{\displaystyle {\frac {\partial u}{\partial x}}={\frac {\partial v}{\partial y}},{\frac {\partial u}{\partial y}}=-{\frac {\partial v}{\partial x}}} 6556:: in this single aspect, their approach is different from the one adopted by the other authors cited in this section, and perhaps more complete. 6858: 6796: 7711: 7686: 7525: 6719: 3133: 6750: 7720:
Lectures on analytic functions of several complex variables – Lectured in 1956–57 at the Istituto Nazionale di Alta Matematica in Rome
7660: 7578: 7484: 7442: 7398: 7356: 7699:
Lezioni sulle funzioni analitiche di più variabili complesse – Tenute nel 1956–57 all'Istituto Nazionale di Alta Matematica in Roma
6035:
Some of the basic properties of Wirtinger derivatives are the same ones as the properties characterizing the ordinary (or partial)
7607:
Introduzione elementare alla teoria delle funzioni di variabili complesse con particolare riguardo alle rappresentazioni integrali
3034: 7741: 7610:, Contributi del Centro Linceo Interdisciplinare di Scienze Matematiche e Loro Applicazioni (in Italian), vol. 67, Rome: 7270:, Contributi del Centro Linceo Interdisciplinare di Scienze Matematiche e Loro Applicazioni (in Italian), vol. 24, Rome: 7746: 7631: 7611: 7382: 7334: 7271: 6574: 6219: 4241: 3296: 2366: 1577: 68: 7200: 7628:
Elementary introduction to the theory of functions of complex variables with particular regard to integral representations
7562: 7424: 4209: 1850: 1339: 884: 516: 44: 7247: 6189: 4286: 1134: 6095: 4246: 1582: 1098: 414: 2371: 643: 76: 52: 7305:(1986), "Unification of global and local existence theorems for holomorphic functions of several complex variables", 6935:" (free English translation of the title) is the first paper where a sufficient condition for the solvability of the 1102: 4978: 6911: 4925: 4469: 7736: 7243: 6940: 6896: 6834: 6697: 6510: 6223: 6171: 4229: 1146: 1122: 548: 496: 40: 24: 6278: 3389: 2526: 278:{\displaystyle {\begin{cases}x_{k}+iy_{k}=z_{k}\\x_{k}-iy_{k}=u_{k}\end{cases}}\qquad 1\leqslant k\leqslant n.} 60: 7475:, North–Holland Mathematical Library, vol. 7 (3rd (Revised) ed.), Amsterdam–London–New York–Tokyo: 6526:
In this work, the authors prove some of the properties of Wirtinger derivatives also for the general case of
7615: 7275: 7172:, International Series of Monographs in Pure and Applied Mathematics, vol. 25, London–Paris–Frankfurt: 6497: 6109: 4418: 4366: 3830: 1034: 652: 603: 560: 64: 6419: 4329: 3410: 3094: 2460: 6553: 6410: 6150: 6091: 6000: 5676: 1086: 1026: 320: 7714:(which at present bears his name), containing appendices of Enzo Martinelli, Giovanni Battista Rizza and 7290:
is a short course in the theory of functions of several complex variables, held in February 1972 at the
7205: 6996: 6780: 6485: 6231: 6170:) of Osgood's 1913 paper contains much important historical information on the early development of the 6040: 2414: 1622: 1126: 1078: 688: 72: 6991: 3347: 3308: 119: 7715: 7566: 7434: 7134:(1913), "Sur une classe de fonctions d'une variable complexe et sur certaines équations intégrales", 6846: 6620: 6493: 6489: 2532: 2422: 2332: 1630: 1543: 983: 56: 6318: 3458: 2086: 1865: 164: 7390: 6947: 6842: 1130: 955: 692: 647: 564: 556: 540: 520: 6916:
Rendiconti della Accademia Nazionale dei Lincei, Classe di Scienze Fisiche, Matematiche e Naturali
6792:"Studii sui punti singolari essenziali delle funzioni analitiche di due o più variabili complesse" 5721: 5034: 3881: 3488: 7230: 7153: 7119: 7029: 6955: 6907: 6883: 6821: 6680: 6163: 6146: 5995: 5985: 3393: 2454: 959: 576: 325: 313: 7307:
Memorie della Accademia Nazionale dei Lincei, Classe di Scienze Fisiche, Matematiche e Naturali
7682: 7656: 7574: 7521: 7517: 7480: 7468: 7438: 7394: 7352: 7196: 7053: 6853: 6787: 6715: 6693: 6464: 6382: 6057: 5990: 4324: 1114: 1040: 1023: 572: 552: 146: 109: 36: 7570: 7556: 7433:, Wiley Classics Library (Reprint ed.), New York–Chichester–Brisbane–Toronto–Singapore: 3278: 7702: 7690: 7674: 7642: 7592: 7539: 7498: 7456: 7412: 7370: 7344: 7322: 7222: 7214: 7185: 7145: 7131: 7111: 7103: 7089: 7077: 7067: 7058: 7037: 7013: 7005: 6975: 6959: 6923: 6875: 6867: 6813: 6805: 6767: 6733: 6672: 6664: 6406: 6207: 6065: 4213: 1263: 611: 592: 544: 532: 113: 93: 20: 7670: 7588: 7535: 7494: 7452: 7408: 7366: 7318: 7181: 7025: 6971: 6831:
Studies on essential singular points of analytic functions of two or more complex variables
6779:" (free English translation of the title) is an important reference paper in the theory of 6763: 6729: 6581: 6529: 2494: 2339: 1550: 989: 7706: 7678: 7666: 7652: 7596: 7584: 7543: 7531: 7502: 7490: 7460: 7448: 7416: 7404: 7374: 7362: 7326: 7314: 7302: 7226: 7189: 7177: 7115: 7081: 7041: 7021: 7017: 6979: 6967: 6963: 6927: 6879: 6817: 6771: 6759: 6745: 6737: 6725: 6711: 6676: 6578: 6355: 4401: 3303: 2336: 1847: 1649: 1547: 1336: 1082: 616: 7565:
Series of Monographs and Advanced Texts, New York–Chichester–Brisbane–Toronto–Singapore:
3241: 365: 1165:, p. 2,4) which are used as general references in this and the following sections. 75:
for such functions that is entirely analogous to the ordinary differential calculus for
7552: 7261: 7173: 6936: 6481: 6414: 6388: 6128: 3482: 3127: 2436: 2418: 1626: 1318: 1298: 965: 600: 528: 391: 291: 6707:
Nevanlinna's theory of value distribution: the second main theorem and its error terms
7730: 7387:
Introduction to Holomorphic Functions of Several Variables. Volume I: Function Theory
7348: 7234: 7157: 7123: 7033: 6887: 6825: 6684: 6646: 3341: 1653: 1253:{\displaystyle \mathbb {C} \equiv \mathbb {R} ^{2}=\{(x,y)\mid x,y\in \mathbb {R} \}} 1177: 1022:. This is evidently an alternative definition of Wirtinger derivative respect to the 607: 568: 7701:(in Italian), Padova: CEDAM – Casa Editrice Dott. Antonio Milani, pp. XIV+255, 7630:" (English translation of the title) are the notes form a course, published by the 6987: 6838: 6514: 3917: 1129:, the form of all the differential operators commonly used in the theory, like the 495:, p. 112). Apparently, this paper was not noticed by early researchers in the 7242:. In this important paper, Wirtinger introduces several important concepts in the 7646: 7511: 7428: 7338: 6705: 3338: 3300: 3265: 2331:
As for Wirtinger derivatives for functions of one complex variable, the natural
317: 7558:
Methods of Complex Analysis in Partial Differential Equations and Applications
7165: 6036: 5070: 4505: 4237: 4228:
This property takes two different forms respectively for functions of one and
4217: 3031:
The second Wirtinger derivative is also related with complex differentiation;
1090: 48: 7292:
Centro Linceo Interdisciplinare di Scienze Matematiche e Loro Applicazioni "
6103: 2335:
of definition of these partial differential operators is again the space of
1154: 1097:
uses this newly defined concept in order to introduce his generalization of
524: 7056:(1899), "Sur les propriétés du potentiel et sur les fonctions Abéliennes", 6627: = 1: however, the resulting formulas are formally very similar. 7476: 6315: 6125:, p. 112), equation 2': note that, throughout the paper, the symbol 591:, p. 294), a new step in the definition of the concept was taken by 47:
of the first order which behave in a very similar manner to the ordinary
1113:
The first systematic introduction of Wirtinger derivatives seems due to
7218: 7201:"Zur formalen Theorie der Funktionen von mehr komplexen Veränderlichen" 7149: 7107: 7072: 7009: 6895:" (English translation of the title) is another important paper in the 6871: 6809: 6668: 3231:{\displaystyle z\equiv (x,y)=(x_{1},\ldots ,x_{n},y_{1},\ldots ,y_{n})} 1546:
of definition of these partial differential operators is the space of
491:
below: to see this it is sufficient to compare equations 2 and 2' of (
7267:
Introduzione all'analisi complessa (Lezioni tenute nel febbraio 1972)
6227: 3273: 2410: 1618: 1121:
in order to simplify the calculations of quantities occurring in the
1019: 6791: 6650: 3091:
In the present section and in the following ones it is assumed that
1033:, p. 294), the limit may exist for functions that are not even 7516:, de Gruyter Studies in Mathematics, vol. 3, Berlin–New York: 7239: 7046: 6484:
uses the properties of Wirtinger derivatives in order to prove the
6833:" (English translation of the title) is an important paper in the 6500:: this purpose is common to all references cited in this section. 3083:
is equivalent to the Cauchy-Riemann equations in a complex form.
583:
The work of Dimitrie Pompeiu in 1912 and 1913: a new formulation
39:
who introduced them in 1927 in the course of his studies on the
7092:(1912), "Sur une classe de fonctions d'une variable complexe", 6952:
Topics in the theory of functions of several complex variables
6748:(1969), "Derivata areolare e funzioni a variazione limitata", 108:, pp. 66–67). In the third paragraph of his 1899 paper, 3076:{\displaystyle {\frac {\partial f}{\partial {\bar {z}}}}=0} 2919:
where the third equality uses the Cauchy-Riemann equations
2312: 2073: 252: 1335:). The Wirtinger derivatives are defined as the following 7473:
An Introduction to Complex Analysis in Several Variables
4240:
in its full generality it is necessary to consider two
1846:
The Wirtinger derivatives are defined as the following
7710:. Notes from a course held by Francesco Severi at the 6777:
Areolar derivative and functions of bounded variation
6584: 6532: 6422: 6391: 6358: 6321: 6281: 6131: 6068:
does not cite any reference to support his assertion.
5765: 5724: 5679: 5082: 5037: 4981: 4928: 4517: 4472: 4421: 4369: 4332: 4289: 4249: 4208:
This property implies that Wirtinger derivatives are
3929: 3884: 3833: 3532: 3491: 3461: 3413: 3350: 3311: 3281: 3244: 3136: 3097: 3037: 2925: 2600: 2535: 2497: 2463: 2439: 2374: 2342: 1859: 1661: 1585: 1553: 1351: 1321: 1301: 1266: 1185: 1043: 992: 968: 887: 703: 655: 619: 417: 394: 368: 328: 294: 158: 122: 947:{\displaystyle \Gamma (z_{0},r)=\partial D(z_{0},r)} 7430:
Applied and Computational Complex Analysis Volume 3
6751:
Revue Roumaine de Mathématiques Pures et Appliquées
6619:, p. 6, as already pointed out, consider only 6098:
defining them, i.e. the operator in equation 2 of (
4316:{\displaystyle \Omega ''\subseteq \mathbb {C} ^{p}} 288:Then he writes the equation defining the functions 7389:, Wadsworth & Brooks/Cole Mathematics Series, 6941:holomorphic functions of several complex variables 6597: 6545: 6463:With or without the attribution of the concept to 6445: 6397: 6373: 6343: 6307: 6214:, p. 27) remarks, the original definition of 6137: 5968: 5748: 5710: 5654: 5061: 5023: 4967: 4899: 4496: 4458: 4392: 4355: 4315: 4276:{\displaystyle \Omega '\subseteq \mathbb {C} ^{m}} 4275: 4197: 3908: 3870: 3808: 3515: 3473: 3447: 3368: 3329: 3287: 3256: 3230: 3118: 3075: 3020: 2908: 2583: 2517: 2483: 2445: 2401: 2355: 2321: 1838: 1610:{\displaystyle \Omega \subseteq \mathbb {R} ^{2},} 1609: 1566: 1531: 1327: 1307: 1287: 1252: 1065: 1010: 974: 946: 870: 679: 634: 475:{\displaystyle {\frac {d^{2}V}{dz_{k}\,du_{q}}}=0} 474: 400: 380: 354: 300: 277: 137: 88:Early days (1899–1911): the work of Henri Poincaré 7718:. An English translation of the title reads as:-" 6933:On the functions of two or more complex variables 6912:"Sulle funzioni di due o più variabili complesse" 6260:, p. 294 for one example of such a function. 2402:{\displaystyle \Omega \subset \mathbb {R} ^{2n},} 1029:: it is a more general one, since, as noted a by 549:holomorphic function of several complex variables 7393:: Wadsworth & Brooks/Cole, pp. xx+203, 7244:theory of functions of several complex variables 6897:theory of functions of several complex variables 6837:, where the problem of determining what kind of 6835:theory of functions of several complex variables 6511:theory of functions of several complex variables 6172:theory of functions of several complex variables 1123:theory of functions of several complex variables 770: 497:theory of functions of several complex variables 41:theory of functions of several complex variables 7693:including many historical notes on the subject. 7340:Analytic Functions of Several Complex Variables 6954:(unabridged and corrected ed.), New York: 6899:, investigating further the theory started in ( 6153:, instead of the now commonplace symbol ∂. 71:. These operators permit the construction of a 6710:, Springer Monographs in Mathematics, Berlin: 6023: 5024:{\displaystyle f\in C^{1}(\Omega ,\Omega ''),} 519:of the theory are expressed directly by using 6467:: see, for example, the well known monograph 8: 7137:Rendiconti del Circolo Matematico di Palermo 7095:Rendiconti del Circolo Matematico di Palermo 6656:Rendiconti del Circolo Matematico di Palermo 6616: 4968:{\displaystyle g\in C^{1}(\Omega ',\Omega )} 4497:{\displaystyle g(\Omega )\subseteq \Omega ,} 3272: ≥ 1: also it is assumed that the 1247: 1209: 1158: 7343:, Prentice-Hall series in Modern Analysis, 6039:and used for the construction of the usual 3388:and of the corresponding properties of the 1260:(in a sense of expressing a complex number 1125:: as a result of the introduction of these 500: 7513:Holomorphic functions of several variables 6698:holomorphic functions of several variables 7246:, namely Wirtinger's derivatives and the 7071: 6612: 6589: 6583: 6537: 6531: 6468: 6428: 6427: 6421: 6390: 6357: 6326: 6320: 6308:{\displaystyle \partial _{\bar {z}}w\in } 6287: 6286: 6280: 6130: 5953: 5933: 5932: 5926: 5901: 5890: 5889: 5874: 5868: 5855: 5844: 5843: 5826: 5825: 5819: 5794: 5776: 5770: 5766: 5764: 5723: 5690: 5678: 5639: 5628: 5627: 5615: 5604: 5603: 5596: 5576: 5565: 5564: 5549: 5538: 5527: 5511: 5500: 5499: 5487: 5477: 5457: 5439: 5428: 5417: 5378: 5367: 5366: 5356: 5343: 5328: 5317: 5316: 5309: 5289: 5278: 5277: 5262: 5251: 5240: 5224: 5209: 5199: 5179: 5161: 5150: 5139: 5100: 5087: 5083: 5081: 5036: 4992: 4980: 4939: 4927: 4879: 4878: 4862: 4861: 4855: 4830: 4829: 4815: 4793: 4792: 4778: 4747: 4706: 4705: 4696: 4670: 4669: 4663: 4638: 4637: 4623: 4595: 4564: 4522: 4518: 4516: 4471: 4438: 4420: 4368: 4331: 4307: 4303: 4302: 4288: 4267: 4263: 4262: 4248: 4182: 4171: 4170: 4155: 4131: 4120: 4119: 4104: 4073: 4062: 4061: 4051: 4038: 4020: 3996: 3978: 3947: 3934: 3930: 3928: 3883: 3850: 3832: 3793: 3782: 3781: 3766: 3751: 3740: 3739: 3724: 3680: 3669: 3668: 3658: 3645: 3627: 3612: 3594: 3550: 3537: 3533: 3531: 3490: 3460: 3430: 3412: 3357: 3353: 3352: 3349: 3318: 3314: 3313: 3310: 3280: 3243: 3219: 3200: 3187: 3168: 3135: 3110: 3106: 3105: 3096: 3053: 3052: 3038: 3036: 2998: 2972: 2949: 2926: 2924: 2882: 2859: 2833: 2798: 2775: 2749: 2723: 2708: 2673: 2647: 2632: 2605: 2601: 2599: 2534: 2504: 2496: 2470: 2462: 2438: 2387: 2383: 2382: 2373: 2347: 2341: 2295: 2282: 2267: 2254: 2239: 2227: 2216: 2215: 2205: 2179: 2166: 2151: 2138: 2123: 2111: 2100: 2099: 2089: 2081: 2056: 2043: 2028: 2015: 2000: 1988: 1975: 1949: 1936: 1921: 1908: 1893: 1881: 1868: 1860: 1858: 1822: 1818: 1817: 1808: 1800: 1786: 1767: 1754: 1735: 1713: 1705: 1683: 1679: 1678: 1668: 1664: 1663: 1660: 1598: 1594: 1593: 1584: 1558: 1552: 1505: 1484: 1469: 1448: 1447: 1438: 1414: 1393: 1378: 1356: 1352: 1350: 1320: 1300: 1265: 1243: 1242: 1200: 1196: 1195: 1187: 1186: 1184: 1150: 1118: 1077:, p. 28), the first to identify the 1054: 1042: 991: 967: 929: 898: 886: 857: 828: 817: 804: 785: 773: 756: 751: 741: 720: 719: 705: 704: 702: 670: 669: 660: 654: 618: 567:, he follows the established practice of 457: 449: 443: 425: 418: 416: 393: 367: 346: 333: 327: 293: 243: 230: 214: 200: 187: 171: 159: 157: 129: 125: 124: 121: 6566: 6122: 6099: 6078: 6061: 6053: 3376:All the proofs are easy consequences of 2417:, they can be readily extended to every 1625:, they can be readily extended to every 1162: 492: 101: 97: 6570: 6257: 6215: 6211: 6203: 6187:, pp. 23–24): curiously, he calls 6019: 6011: 4236: > 1 case, to express the 1094: 1074: 1030: 596: 588: 512: 105: 6859:Annali di Matematica Pura ed Applicata 6797:Annali di Matematica Pura ed Applicata 6244: 6184: 6167: 4459:{\displaystyle f,g\in C^{1}(\Omega ),} 4393:{\displaystyle f:\Omega \to \Omega ''} 3871:{\displaystyle f,g\in C^{1}(\Omega ),} 1161:, pp. 3–6), and the monograph of 680:{\displaystyle z_{0}\in \mathbb {C} ,} 536: 535:involved. In the long survey paper by 7712:Istituto Nazionale di Alta Matematica 7510:Kaup, Ludger; Kaup, Burchard (1983), 6446:{\displaystyle \partial _{\bar {z}}w} 6270: 4356:{\displaystyle g:\Omega '\to \Omega } 4216:point of view, exactly like ordinary 3448:{\displaystyle f,g\in C^{1}(\Omega )} 3119:{\displaystyle z\in \mathbb {C} ^{n}} 2484:{\displaystyle \partial f/\partial z} 2457:at a point, the Wirtinger derivative 2429:Relation with complex differentiation 2409:and again, since these operators are 485:This implies that he implicitly used 7: 6900: 5711:{\displaystyle f\in C^{1}(\Omega ),} 508: 504: 7248:tangential Cauchy-Riemann condition 6174:, and is therefore a useful source. 2491:agrees with the complex derivative 96:at least as early as in the paper ( 92:Wirtinger derivatives were used in 7634:, held by Martinelli when he was " 6424: 6335: 6283: 6206:, p. 294) in his approach to 5946: 5929: 5885: 5877: 5839: 5822: 5787: 5779: 5699: 5623: 5599: 5560: 5552: 5495: 5480: 5450: 5442: 5362: 5358: 5336: 5312: 5273: 5265: 5217: 5202: 5172: 5164: 5093: 5089: 5008: 5001: 4959: 4949: 4875: 4858: 4826: 4818: 4789: 4781: 4758: 4750: 4702: 4698: 4683: 4666: 4634: 4626: 4606: 4598: 4575: 4567: 4528: 4524: 4488: 4479: 4447: 4383: 4376: 4350: 4340: 4291: 4251: 4166: 4158: 4115: 4107: 4057: 4053: 4031: 4023: 3989: 3981: 3940: 3936: 3859: 3777: 3769: 3735: 3727: 3664: 3660: 3638: 3630: 3605: 3597: 3543: 3539: 3439: 3282: 3049: 3041: 3009: 3001: 2983: 2975: 2960: 2952: 2937: 2929: 2870: 2862: 2844: 2836: 2809: 2801: 2786: 2778: 2760: 2752: 2734: 2726: 2684: 2676: 2658: 2650: 2616: 2608: 2475: 2464: 2375: 2288: 2284: 2260: 2256: 2211: 2207: 2172: 2168: 2144: 2140: 2095: 2091: 2049: 2045: 2021: 2017: 1981: 1977: 1942: 1938: 1914: 1910: 1874: 1870: 1586: 1511: 1507: 1490: 1486: 1444: 1440: 1420: 1416: 1399: 1395: 1362: 1358: 916: 888: 858: 818: 763: 760: 757: 716: 708: 14: 7614:, pp. 236+II, archived from 4408:Functions of one complex variable 3369:{\displaystyle \mathbb {C} ^{n}.} 3330:{\displaystyle \mathbb {R} ^{2n}} 1169:Functions of one complex variable 1147:multidimensional complex analysis 7288:Introduction to complex analysis 6509:This is a classical work on the 6409:, the latter being equal to the 6202:This is the definition given by 2591:which is complex differentiable 1809: 1801: 1714: 1706: 138:{\displaystyle \mathbb {C} ^{n}} 6651:"Sopra un problema al contorno" 6269:See also the excellent book by 6102:, p. 112), is exactly the 2584:{\displaystyle f(z)=u(z)+iv(z)} 2197: 2080: 1967: 1617:but, since these operators are 408:, exactly in the following way 256: 7632:Accademia Nazionale dei Lincei 7612:Accademia Nazionale dei Lincei 7272:Accademia Nazionale dei Lincei 7170:Generalized Analytic Functions 6577:considers the general case of 6433: 6368: 6362: 6352:, p > 1, then the function 6344:{\displaystyle L_{p}(\Omega )} 6338: 6332: 6292: 6275:If the generalized derivative 6090:These functions are precisely 5938: 5895: 5849: 5831: 5756:the following equalities hold 5702: 5696: 5633: 5609: 5570: 5505: 5372: 5322: 5283: 5015: 4998: 4962: 4945: 4884: 4867: 4835: 4798: 4732: 4720: 4711: 4675: 4643: 4549: 4537: 4482: 4476: 4450: 4444: 4379: 4347: 4176: 4125: 4094: 4082: 4067: 3968: 3956: 3862: 3856: 3787: 3745: 3674: 3523:the following equalities hold 3474:{\displaystyle \alpha ,\beta } 3442: 3436: 3225: 3161: 3155: 3143: 3058: 2578: 2572: 2560: 2554: 2545: 2539: 2221: 2105: 1851:partial differential operators 1453: 1340:partial differential operators 1224: 1212: 1002: 996: 941: 922: 910: 891: 854: 848: 840: 821: 777: 747: 734: 725: 629: 623: 517:partial differential operators 45:partial differential operators 1: 7563:Canadian Mathematical Society 6405:a derivative in the sense of 6273:, p. 55), Theorem 1.31: 1109:The work of Wilhelm Wirtinger 7274:, p. 34, archived from 6096:linear differential operator 5914: 5807: 5749:{\displaystyle i=1,\dots ,n} 5062:{\displaystyle i=1,\dots ,m} 3909:{\displaystyle i=1,\dots ,n} 3516:{\displaystyle i=1,\dots ,n} 2529:. For the complex function 7648:Theory of Complex Functions 6704:Cherry, W.; Ye, Z. (2001), 6690:On a boundary value problem 6611: = 1. References 3384: 3378: 555:: as a matter of fact when 539:(first published in 1913), 487: 355:{\displaystyle x_{k},y_{q}} 312:, previously written using 77:functions of real variables 16:Concept in complex analysis 7763: 7697:Severi, Francesco (1958), 6024:Kracht & Kreyszig 1988 5069:the following form of the 1093:. In his following paper, 982:entirely contained in the 7604:Martinelli, Enzo (1984), 6480:In this course lectures, 4230:several complex variables 2525:. This follows from the 1159:Gunning & Rossi (1965 1099:Cauchy's integral formula 61:antiholomorphic functions 25:several complex variables 6617:Gunning & Rossi 1965 6513:dealing mainly with its 6234:for further information. 6190:Cauchy–Riemann equations 4915:> 1 complex variables 2527:Cauchy-Riemann equations 1641:> 1 complex variables 1066:{\displaystyle z=z_{0}.} 65:differentiable functions 6862:, s. III (in Italian), 6800:, s. III (in Italian), 6147:partial differentiation 6092:pluriharmonic functions 6060:is precisely stated by 3295:can be thought of as a 3288:{\displaystyle \Omega } 1135:Cauchy–Riemann operator 604:differentiable function 100:), as briefly noted by 31:(sometimes also called 21:complex analysis of one 7742:Differential operators 7337:; Rossi, Hugo (1965), 6599: 6547: 6447: 6411:Generalized derivative 6399: 6375: 6345: 6309: 6193:this set of equations. 6139: 6110:pluriharmonic operator 6062:Cherry & Ye (2001) 6052:Reference to the work 6001:Pluriharmonic function 5970: 5750: 5712: 5656: 5543: 5433: 5256: 5155: 5063: 5025: 4969: 4901: 4498: 4460: 4394: 4357: 4317: 4277: 4199: 3910: 3872: 3810: 3517: 3475: 3449: 3370: 3331: 3289: 3258: 3232: 3120: 3077: 3022: 2910: 2585: 2519: 2485: 2455:complex differentiable 2447: 2403: 2357: 2323: 1840: 1611: 1568: 1533: 1329: 1309: 1289: 1288:{\displaystyle z=x+iy} 1254: 1127:differential operators 1103:Cauchy–Pompeiu formula 1067: 1012: 976: 948: 872: 681: 636: 561:pluriharmonic operator 476: 402: 382: 356: 302: 279: 139: 7747:Mathematical analysis 7567:John Wiley & Sons 7435:John Wiley & Sons 7255:Scientific references 7206:Mathematische Annalen 6997:Mathematische Annalen 6640:Historical references 6600: 6598:{\displaystyle C^{1}} 6569:, p. 4 and also 6548: 6546:{\displaystyle C^{1}} 6494:holomorphic functions 6448: 6400: 6376: 6346: 6310: 6218:does not require the 6140: 6041:differential calculus 5971: 5751: 5713: 5657: 5523: 5413: 5236: 5135: 5064: 5026: 4970: 4902: 4499: 4461: 4395: 4358: 4318: 4278: 4200: 3911: 3873: 3811: 3518: 3476: 3450: 3371: 3332: 3290: 3259: 3233: 3121: 3078: 3023: 2911: 2586: 2520: 2518:{\displaystyle df/dz} 2486: 2448: 2423:generalized functions 2415:constant coefficients 2404: 2358: 2356:{\displaystyle C^{1}} 2324: 1841: 1631:generalized functions 1623:constant coefficients 1612: 1569: 1567:{\displaystyle C^{1}} 1542:Clearly, the natural 1534: 1330: 1310: 1290: 1255: 1163:Kaup & Kaup (1983 1153:, pp. 3–5), the 1068: 1013: 1011:{\displaystyle g(z),} 977: 949: 873: 682: 637: 543:with respect to each 477: 403: 383: 357: 303: 280: 140: 104:, p. 31) and by 102:Cherry & Ye (2001 73:differential calculus 57:holomorphic functions 29:Wirtinger derivatives 7351:, pp. xiv+317, 7176:, pp. xxx+668, 6948:Osgood, William Fogg 6847:domain of holomorphy 6714:, pp. XII+202, 6582: 6567:Kaup & Kaup 1983 6530: 6420: 6389: 6374:{\displaystyle w(z)} 6356: 6319: 6279: 6129: 5763: 5722: 5677: 5080: 5035: 4979: 4926: 4515: 4470: 4419: 4367: 4330: 4287: 4247: 3927: 3882: 3831: 3530: 3489: 3459: 3411: 3348: 3309: 3279: 3242: 3134: 3095: 3035: 2923: 2598: 2533: 2495: 2461: 2437: 2372: 2340: 1857: 1659: 1583: 1551: 1349: 1319: 1299: 1264: 1183: 1041: 990: 984:domain of definition 966: 885: 701: 653: 635:{\displaystyle g(z)} 617: 551:seem to be meant as 415: 392: 366: 326: 316:with respect to the 292: 156: 120: 51:with respect to one 7655:, pp. xx+453, 7520:, pp. XV+349, 7391:Belmont, California 6958:, pp. IV+120, 6908:Levi-Civita, Tullio 6781:areolar derivatives 6149:respect to a given 6145:is used to signify 6081:, pp. 111–114) 3257:{\displaystyle x,y} 541:partial derivatives 521:partial derivatives 499:: in the papers of 381:{\displaystyle k,q} 314:partial derivatives 33:Wirtinger operators 7437:, pp. X+637, 7383:Gunning, Robert C. 7335:Gunning, Robert C. 7219:10.1007/BF01447872 7197:Wirtinger, Wilhelm 7150:10.1007/BF03015607 7108:10.1007/BF03015292 7073:10.1007/BF02417872 7010:10.1007/BF01455902 6918:, 5 (in Italian), 6872:10.1007/BF02420535 6854:Levi, Eugenio Elia 6810:10.1007/BF02419336 6788:Levi, Eugenio Elia 6669:10.1007/BF03015289 6595: 6543: 6443: 6395: 6371: 6341: 6305: 6232:areolar derivative 6135: 5996:Dolbeault operator 5966: 5964: 5746: 5708: 5652: 5650: 5059: 5021: 4965: 4897: 4895: 4494: 4456: 4390: 4353: 4313: 4273: 4195: 4193: 3906: 3868: 3806: 3804: 3513: 3471: 3445: 3366: 3327: 3285: 3254: 3228: 3116: 3073: 3018: 2906: 2904: 2581: 2515: 2481: 2443: 2399: 2353: 2319: 2311: 2072: 1836: 1607: 1564: 1529: 1527: 1325: 1305: 1285: 1250: 1079:areolar derivative 1063: 1018:i.e. his bounding 1008: 972: 944: 868: 784: 689:areolar derivative 677: 632: 553:formal derivatives 501:Levi-Civita (1905) 472: 398: 388:ranging from 1 to 378: 352: 298: 275: 251: 135: 112:first defines the 55:, when applied to 7687:978-0-387-97195-7 7643:Remmert, Reinhold 7636:Professore Linceo 7551:Kracht, Manfred; 7527:978-3-11-004150-7 7518:Walter de Gruyter 7240:DigiZeitschriften 7047:DigiZeitschriften 6721:978-3-540-66416-1 6694:Dirichlet problem 6465:Wilhelm Wirtinger 6436: 6398:{\displaystyle G} 6383:almost everywhere 6295: 6256:See problem 2 in 6245:Formal definition 6243:See the section " 6138:{\displaystyle d} 6022:, p. 62 and 5991:Dolbeault complex 5960: 5941: 5917: 5908: 5898: 5862: 5852: 5834: 5810: 5801: 5646: 5636: 5612: 5583: 5573: 5518: 5508: 5464: 5385: 5375: 5350: 5325: 5296: 5286: 5231: 5186: 5107: 4891: 4887: 4870: 4842: 4838: 4805: 4801: 4765: 4718: 4714: 4690: 4678: 4650: 4646: 4613: 4582: 4535: 4189: 4179: 4138: 4128: 4080: 4070: 4045: 4003: 3954: 3800: 3790: 3758: 3748: 3687: 3677: 3652: 3619: 3557: 3065: 3061: 3016: 2990: 2967: 2944: 2900: 2877: 2851: 2816: 2793: 2767: 2741: 2716: 2691: 2665: 2640: 2623: 2446:{\displaystyle f} 2302: 2274: 2247: 2234: 2224: 2186: 2158: 2131: 2118: 2108: 2063: 2035: 2008: 1995: 1956: 1928: 1901: 1888: 1518: 1497: 1477: 1460: 1456: 1427: 1406: 1386: 1369: 1328:{\displaystyle y} 1308:{\displaystyle x} 1295:for real numbers 1141:Formal definition 1115:Wilhelm Wirtinger 1101:, the now called 1024:complex conjugate 975:{\displaystyle r} 811: 769: 767: 732: 728: 691:as the following 606:(in the sense of 533:complex variables 464: 401:{\displaystyle n} 301:{\displaystyle V} 147:complex conjugate 37:Wilhelm Wirtinger 7754: 7737:Complex analysis 7709: 7691:complex analysis 7689:. A textbook on 7681: 7625: 7624: 7623: 7599: 7546: 7505: 7463: 7419: 7377: 7345:Englewood Cliffs 7329: 7303:Fichera, Gaetano 7285: 7284: 7283: 7237: 7192: 7160: 7126: 7084: 7075: 7059:Acta Mathematica 7044: 6982: 6930: 6890: 6828: 6774: 6746:Fichera, Gaetano 6740: 6687: 6628: 6621:holomorphic maps 6615:, p. 5 and 6604: 6602: 6601: 6596: 6594: 6593: 6563: 6557: 6552: 6550: 6549: 6544: 6542: 6541: 6524: 6518: 6507: 6501: 6478: 6472: 6461: 6455: 6452: 6450: 6449: 6444: 6439: 6438: 6437: 6429: 6413:in the sense of 6404: 6402: 6401: 6396: 6380: 6378: 6377: 6372: 6350: 6348: 6347: 6342: 6331: 6330: 6314: 6312: 6311: 6306: 6298: 6297: 6296: 6288: 6267: 6261: 6254: 6248: 6247:" of this entry. 6241: 6235: 6230:. See the entry 6200: 6194: 6181: 6175: 6160: 6154: 6144: 6142: 6141: 6136: 6119: 6113: 6088: 6082: 6075: 6069: 6066:Reinhold Remmert 6050: 6044: 6033: 6027: 6016: 5975: 5973: 5972: 5967: 5965: 5961: 5959: 5958: 5957: 5944: 5943: 5942: 5934: 5927: 5918: 5913: 5909: 5907: 5906: 5905: 5900: 5899: 5891: 5883: 5875: 5869: 5863: 5861: 5860: 5859: 5854: 5853: 5845: 5837: 5836: 5835: 5827: 5820: 5811: 5806: 5802: 5800: 5799: 5798: 5785: 5777: 5771: 5755: 5753: 5752: 5747: 5717: 5715: 5714: 5709: 5695: 5694: 5672: 5661: 5659: 5658: 5653: 5651: 5647: 5645: 5644: 5643: 5638: 5637: 5629: 5621: 5620: 5619: 5614: 5613: 5605: 5597: 5595: 5591: 5584: 5582: 5581: 5580: 5575: 5574: 5566: 5558: 5550: 5542: 5537: 5519: 5517: 5516: 5515: 5510: 5509: 5501: 5493: 5492: 5491: 5478: 5476: 5472: 5465: 5463: 5462: 5461: 5448: 5440: 5432: 5427: 5405: 5401: 5386: 5384: 5383: 5382: 5377: 5376: 5368: 5357: 5351: 5349: 5348: 5347: 5334: 5333: 5332: 5327: 5326: 5318: 5310: 5308: 5304: 5297: 5295: 5294: 5293: 5288: 5287: 5279: 5271: 5263: 5255: 5250: 5232: 5230: 5229: 5228: 5215: 5214: 5213: 5200: 5198: 5194: 5187: 5185: 5184: 5183: 5170: 5162: 5154: 5149: 5127: 5123: 5108: 5106: 5105: 5104: 5088: 5068: 5066: 5065: 5060: 5030: 5028: 5027: 5022: 5014: 4997: 4996: 4974: 4972: 4971: 4966: 4955: 4944: 4943: 4921: 4906: 4904: 4903: 4898: 4896: 4892: 4890: 4889: 4888: 4880: 4873: 4872: 4871: 4863: 4856: 4854: 4850: 4843: 4841: 4840: 4839: 4831: 4824: 4816: 4806: 4804: 4803: 4802: 4794: 4787: 4779: 4777: 4773: 4766: 4764: 4756: 4748: 4719: 4717: 4716: 4715: 4707: 4697: 4691: 4689: 4681: 4680: 4679: 4671: 4664: 4662: 4658: 4651: 4649: 4648: 4647: 4639: 4632: 4624: 4614: 4612: 4604: 4596: 4594: 4590: 4583: 4581: 4573: 4565: 4536: 4534: 4523: 4503: 4501: 4500: 4495: 4465: 4463: 4462: 4457: 4443: 4442: 4414: 4399: 4397: 4396: 4391: 4389: 4362: 4360: 4359: 4354: 4346: 4322: 4320: 4319: 4314: 4312: 4311: 4306: 4297: 4282: 4280: 4279: 4274: 4272: 4271: 4266: 4257: 4214:abstract algebra 4204: 4202: 4201: 4196: 4194: 4190: 4188: 4187: 4186: 4181: 4180: 4172: 4164: 4156: 4139: 4137: 4136: 4135: 4130: 4129: 4121: 4113: 4105: 4081: 4079: 4078: 4077: 4072: 4071: 4063: 4052: 4046: 4044: 4043: 4042: 4029: 4021: 4004: 4002: 4001: 4000: 3987: 3979: 3955: 3953: 3952: 3951: 3935: 3915: 3913: 3912: 3907: 3877: 3875: 3874: 3869: 3855: 3854: 3826: 3815: 3813: 3812: 3807: 3805: 3801: 3799: 3798: 3797: 3792: 3791: 3783: 3775: 3767: 3759: 3757: 3756: 3755: 3750: 3749: 3741: 3733: 3725: 3713: 3709: 3688: 3686: 3685: 3684: 3679: 3678: 3670: 3659: 3653: 3651: 3650: 3649: 3636: 3628: 3620: 3618: 3617: 3616: 3603: 3595: 3583: 3579: 3558: 3556: 3555: 3554: 3538: 3522: 3520: 3519: 3514: 3480: 3478: 3477: 3472: 3454: 3452: 3451: 3446: 3435: 3434: 3406: 3375: 3373: 3372: 3367: 3362: 3361: 3356: 3336: 3334: 3333: 3328: 3326: 3325: 3317: 3294: 3292: 3291: 3286: 3263: 3261: 3260: 3255: 3237: 3235: 3234: 3229: 3224: 3223: 3205: 3204: 3192: 3191: 3173: 3172: 3125: 3123: 3122: 3117: 3115: 3114: 3109: 3087:Basic properties 3082: 3080: 3079: 3074: 3066: 3064: 3063: 3062: 3054: 3047: 3039: 3027: 3025: 3024: 3019: 3017: 3015: 3007: 2999: 2991: 2989: 2981: 2973: 2968: 2966: 2958: 2950: 2945: 2943: 2935: 2927: 2915: 2913: 2912: 2907: 2905: 2901: 2899: 2891: 2883: 2878: 2876: 2868: 2860: 2852: 2850: 2842: 2834: 2826: 2822: 2818: 2817: 2815: 2807: 2799: 2794: 2792: 2784: 2776: 2768: 2766: 2758: 2750: 2742: 2740: 2732: 2724: 2717: 2709: 2701: 2697: 2693: 2692: 2690: 2682: 2674: 2666: 2664: 2656: 2648: 2641: 2633: 2624: 2622: 2614: 2606: 2590: 2588: 2587: 2582: 2524: 2522: 2521: 2516: 2508: 2490: 2488: 2487: 2482: 2474: 2452: 2450: 2449: 2444: 2433:When a function 2408: 2406: 2405: 2400: 2395: 2394: 2386: 2362: 2360: 2359: 2354: 2352: 2351: 2328: 2326: 2325: 2320: 2315: 2314: 2308: 2304: 2303: 2301: 2300: 2299: 2283: 2275: 2273: 2272: 2271: 2255: 2248: 2240: 2235: 2233: 2232: 2231: 2226: 2225: 2217: 2206: 2192: 2188: 2187: 2185: 2184: 2183: 2167: 2159: 2157: 2156: 2155: 2139: 2132: 2124: 2119: 2117: 2116: 2115: 2110: 2109: 2101: 2090: 2076: 2075: 2069: 2065: 2064: 2062: 2061: 2060: 2044: 2036: 2034: 2033: 2032: 2016: 2009: 2001: 1996: 1994: 1993: 1992: 1976: 1962: 1958: 1957: 1955: 1954: 1953: 1937: 1929: 1927: 1926: 1925: 1909: 1902: 1894: 1889: 1887: 1886: 1885: 1869: 1853:of first order: 1845: 1843: 1842: 1837: 1832: 1828: 1827: 1826: 1821: 1812: 1804: 1796: 1792: 1791: 1790: 1772: 1771: 1759: 1758: 1740: 1739: 1722: 1718: 1717: 1709: 1691: 1690: 1682: 1673: 1672: 1667: 1647: 1616: 1614: 1613: 1608: 1603: 1602: 1597: 1573: 1571: 1570: 1565: 1563: 1562: 1538: 1536: 1535: 1530: 1528: 1524: 1520: 1519: 1517: 1506: 1498: 1496: 1485: 1478: 1470: 1461: 1459: 1458: 1457: 1449: 1439: 1433: 1429: 1428: 1426: 1415: 1407: 1405: 1394: 1387: 1379: 1370: 1368: 1357: 1342:of first order: 1334: 1332: 1331: 1326: 1314: 1312: 1311: 1306: 1294: 1292: 1291: 1286: 1259: 1257: 1256: 1251: 1246: 1205: 1204: 1199: 1190: 1175: 1087:sense of Sobolev 1072: 1070: 1069: 1064: 1059: 1058: 1017: 1015: 1014: 1009: 981: 979: 978: 973: 953: 951: 950: 945: 934: 933: 903: 902: 877: 875: 874: 869: 861: 844: 843: 833: 832: 812: 810: 809: 808: 786: 783: 768: 766: 752: 750: 746: 745: 733: 731: 730: 729: 721: 714: 706: 686: 684: 683: 678: 673: 665: 664: 641: 639: 638: 633: 612:complex variable 595:: in the paper ( 593:Dimitrie Pompeiu 545:complex variable 515:all fundamental 481: 479: 478: 473: 465: 463: 462: 461: 448: 447: 434: 430: 429: 419: 407: 405: 404: 399: 387: 385: 384: 379: 361: 359: 358: 353: 351: 350: 338: 337: 307: 305: 304: 299: 284: 282: 281: 276: 255: 254: 248: 247: 235: 234: 219: 218: 205: 204: 192: 191: 176: 175: 144: 142: 141: 136: 134: 133: 128: 114:complex variable 94:complex analysis 83:Historical notes 7762: 7761: 7757: 7756: 7755: 7753: 7752: 7751: 7727: 7726: 7725: 7716:Mario Benedicty 7696: 7663: 7653:Springer Verlag 7641: 7621: 7619: 7603: 7581: 7553:Kreyszig, Erwin 7550: 7528: 7509: 7487: 7469:Hörmander, Lars 7467: 7445: 7423: 7401: 7381: 7359: 7333: 7301: 7294:Beniamino Segre 7281: 7279: 7262:Andreotti, Aldo 7260: 7257: 7238:, available at 7195: 7164: 7130: 7088: 7052: 7045:, available at 6986: 6946: 6906: 6852: 6786: 6744: 6722: 6712:Springer Verlag 6703: 6645: 6642: 6636: 6631: 6585: 6580: 6579: 6564: 6560: 6533: 6528: 6527: 6525: 6521: 6515:sheaf theoretic 6508: 6504: 6479: 6475: 6471:, p. 1,23. 6462: 6458: 6423: 6418: 6417: 6387: 6386: 6354: 6353: 6322: 6317: 6316: 6282: 6277: 6276: 6268: 6264: 6255: 6251: 6242: 6238: 6201: 6197: 6182: 6178: 6161: 6157: 6127: 6126: 6120: 6116: 6089: 6085: 6077:See reference ( 6076: 6072: 6051: 6047: 6034: 6030: 6018:See references 6017: 6013: 6009: 5982: 5963: 5962: 5949: 5945: 5928: 5919: 5888: 5884: 5876: 5870: 5865: 5864: 5842: 5838: 5821: 5812: 5790: 5786: 5778: 5772: 5761: 5760: 5720: 5719: 5686: 5675: 5674: 5670: 5668: 5649: 5648: 5626: 5622: 5602: 5598: 5563: 5559: 5551: 5548: 5544: 5498: 5494: 5483: 5479: 5453: 5449: 5441: 5438: 5434: 5406: 5391: 5387: 5365: 5361: 5353: 5352: 5339: 5335: 5315: 5311: 5276: 5272: 5264: 5261: 5257: 5220: 5216: 5205: 5201: 5175: 5171: 5163: 5160: 5156: 5128: 5113: 5109: 5096: 5092: 5078: 5077: 5033: 5032: 5007: 4988: 4977: 4976: 4948: 4935: 4924: 4923: 4919: 4917: 4894: 4893: 4874: 4857: 4825: 4817: 4814: 4810: 4788: 4780: 4757: 4749: 4746: 4742: 4735: 4701: 4693: 4692: 4682: 4665: 4633: 4625: 4622: 4618: 4605: 4597: 4574: 4566: 4563: 4559: 4552: 4527: 4513: 4512: 4468: 4467: 4434: 4417: 4416: 4412: 4410: 4400:having natural 4382: 4365: 4364: 4339: 4328: 4327: 4301: 4290: 4285: 4284: 4261: 4250: 4245: 4244: 4226: 4192: 4191: 4169: 4165: 4157: 4118: 4114: 4106: 4097: 4060: 4056: 4048: 4047: 4034: 4030: 4022: 3992: 3988: 3980: 3971: 3943: 3939: 3925: 3924: 3880: 3879: 3846: 3829: 3828: 3824: 3822: 3803: 3802: 3780: 3776: 3768: 3738: 3734: 3726: 3714: 3693: 3689: 3667: 3663: 3655: 3654: 3641: 3637: 3629: 3608: 3604: 3596: 3584: 3563: 3559: 3546: 3542: 3528: 3527: 3487: 3486: 3483:complex numbers 3457: 3456: 3426: 3409: 3408: 3404: 3402: 3351: 3346: 3345: 3312: 3307: 3306: 3304:euclidean space 3277: 3276: 3240: 3239: 3215: 3196: 3183: 3164: 3132: 3131: 3104: 3093: 3092: 3089: 3048: 3040: 3033: 3032: 3008: 3000: 2982: 2974: 2959: 2951: 2936: 2928: 2921: 2920: 2903: 2902: 2892: 2884: 2869: 2861: 2843: 2835: 2824: 2823: 2808: 2800: 2785: 2777: 2759: 2751: 2733: 2725: 2722: 2718: 2699: 2698: 2683: 2675: 2657: 2649: 2646: 2642: 2625: 2615: 2607: 2596: 2595: 2531: 2530: 2493: 2492: 2459: 2458: 2435: 2434: 2431: 2381: 2370: 2369: 2343: 2338: 2337: 2310: 2309: 2291: 2287: 2263: 2259: 2253: 2249: 2214: 2210: 2202: 2201: 2194: 2193: 2175: 2171: 2147: 2143: 2137: 2133: 2098: 2094: 2082: 2071: 2070: 2052: 2048: 2024: 2020: 2014: 2010: 1984: 1980: 1972: 1971: 1964: 1963: 1945: 1941: 1917: 1913: 1907: 1903: 1877: 1873: 1861: 1855: 1854: 1816: 1782: 1763: 1750: 1731: 1730: 1726: 1704: 1700: 1699: 1695: 1677: 1662: 1657: 1656: 1650:Euclidean space 1645: 1643: 1592: 1581: 1580: 1554: 1549: 1548: 1526: 1525: 1510: 1489: 1483: 1479: 1462: 1443: 1435: 1434: 1419: 1398: 1392: 1388: 1371: 1361: 1347: 1346: 1317: 1316: 1297: 1296: 1262: 1261: 1194: 1181: 1180: 1173: 1171: 1151:Andreotti (1976 1143: 1111: 1083:weak derivative 1050: 1039: 1038: 988: 987: 964: 963: 925: 894: 883: 882: 824: 813: 800: 790: 737: 715: 707: 699: 698: 687:he defines the 656: 651: 650: 642:defined in the 615: 614: 585: 529:imaginary parts 523:respect to the 453: 439: 435: 421: 420: 413: 412: 390: 389: 364: 363: 342: 329: 324: 323: 290: 289: 250: 249: 239: 226: 210: 207: 206: 196: 183: 167: 160: 154: 153: 123: 118: 117: 90: 85: 69:complex domains 35:), named after 17: 12: 11: 5: 7760: 7758: 7750: 7749: 7744: 7739: 7729: 7728: 7724: 7723: 7694: 7661: 7639: 7601: 7579: 7548: 7526: 7507: 7485: 7465: 7443: 7425:Henrici, Peter 7421: 7399: 7379: 7357: 7331: 7299: 7256: 7253: 7252: 7251: 7193: 7174:Pergamon Press 7162: 7144:(1): 277–281, 7128: 7102:(1): 108–113, 7086: 7050: 6984: 6944: 6937:Cauchy problem 6922:(2): 492–499, 6904: 6850: 6784: 6754:(in Italian), 6742: 6720: 6701: 6659:(in Italian), 6647:Amoroso, Luigi 6641: 6638: 6637: 6635: 6632: 6630: 6629: 6613:Andreotti 1976 6592: 6588: 6558: 6540: 6536: 6519: 6502: 6496:under certain 6482:Aldo Andreotti 6473: 6469:Hörmander 1990 6456: 6442: 6435: 6432: 6426: 6394: 6370: 6367: 6364: 6361: 6340: 6337: 6334: 6329: 6325: 6304: 6301: 6294: 6291: 6285: 6262: 6249: 6236: 6216:Pompeiu (1912) 6208:Pompeiu's work 6195: 6176: 6162:The corrected 6155: 6134: 6114: 6083: 6070: 6058:Henri Poincaré 6045: 6028: 6010: 6008: 6005: 6004: 6003: 5998: 5993: 5988: 5981: 5978: 5977: 5976: 5956: 5952: 5948: 5940: 5937: 5931: 5925: 5922: 5920: 5916: 5912: 5904: 5897: 5894: 5887: 5882: 5879: 5873: 5867: 5866: 5858: 5851: 5848: 5841: 5833: 5830: 5824: 5818: 5815: 5813: 5809: 5805: 5797: 5793: 5789: 5784: 5781: 5775: 5769: 5768: 5745: 5742: 5739: 5736: 5733: 5730: 5727: 5707: 5704: 5701: 5698: 5693: 5689: 5685: 5682: 5667: 5664: 5663: 5662: 5642: 5635: 5632: 5625: 5618: 5611: 5608: 5601: 5594: 5590: 5587: 5579: 5572: 5569: 5562: 5557: 5554: 5547: 5541: 5536: 5533: 5530: 5526: 5522: 5514: 5507: 5504: 5497: 5490: 5486: 5482: 5475: 5471: 5468: 5460: 5456: 5452: 5447: 5444: 5437: 5431: 5426: 5423: 5420: 5416: 5412: 5409: 5407: 5404: 5400: 5397: 5394: 5390: 5381: 5374: 5371: 5364: 5360: 5355: 5354: 5346: 5342: 5338: 5331: 5324: 5321: 5314: 5307: 5303: 5300: 5292: 5285: 5282: 5275: 5270: 5267: 5260: 5254: 5249: 5246: 5243: 5239: 5235: 5227: 5223: 5219: 5212: 5208: 5204: 5197: 5193: 5190: 5182: 5178: 5174: 5169: 5166: 5159: 5153: 5148: 5145: 5142: 5138: 5134: 5131: 5129: 5126: 5122: 5119: 5116: 5112: 5103: 5099: 5095: 5091: 5086: 5085: 5058: 5055: 5052: 5049: 5046: 5043: 5040: 5020: 5017: 5013: 5010: 5006: 5003: 5000: 4995: 4991: 4987: 4984: 4964: 4961: 4958: 4954: 4951: 4947: 4942: 4938: 4934: 4931: 4916: 4909: 4908: 4907: 4886: 4883: 4877: 4869: 4866: 4860: 4853: 4849: 4846: 4837: 4834: 4828: 4823: 4820: 4813: 4809: 4800: 4797: 4791: 4786: 4783: 4776: 4772: 4769: 4763: 4760: 4755: 4752: 4745: 4741: 4738: 4736: 4734: 4731: 4728: 4725: 4722: 4713: 4710: 4704: 4700: 4695: 4694: 4688: 4685: 4677: 4674: 4668: 4661: 4657: 4654: 4645: 4642: 4636: 4631: 4628: 4621: 4617: 4611: 4608: 4603: 4600: 4593: 4589: 4586: 4580: 4577: 4572: 4569: 4562: 4558: 4555: 4553: 4551: 4548: 4545: 4542: 4539: 4533: 4530: 4526: 4521: 4520: 4493: 4490: 4487: 4484: 4481: 4478: 4475: 4455: 4452: 4449: 4446: 4441: 4437: 4433: 4430: 4427: 4424: 4409: 4406: 4404:requirements. 4388: 4385: 4381: 4378: 4375: 4372: 4352: 4349: 4345: 4342: 4338: 4335: 4310: 4305: 4300: 4296: 4293: 4270: 4265: 4260: 4256: 4253: 4225: 4222: 4206: 4205: 4185: 4178: 4175: 4168: 4163: 4160: 4154: 4151: 4148: 4145: 4142: 4134: 4127: 4124: 4117: 4112: 4109: 4103: 4100: 4098: 4096: 4093: 4090: 4087: 4084: 4076: 4069: 4066: 4059: 4055: 4050: 4049: 4041: 4037: 4033: 4028: 4025: 4019: 4016: 4013: 4010: 4007: 3999: 3995: 3991: 3986: 3983: 3977: 3974: 3972: 3970: 3967: 3964: 3961: 3958: 3950: 3946: 3942: 3938: 3933: 3932: 3905: 3902: 3899: 3896: 3893: 3890: 3887: 3867: 3864: 3861: 3858: 3853: 3849: 3845: 3842: 3839: 3836: 3821: 3818: 3817: 3816: 3796: 3789: 3786: 3779: 3774: 3771: 3765: 3762: 3754: 3747: 3744: 3737: 3732: 3729: 3723: 3720: 3717: 3715: 3712: 3708: 3705: 3702: 3699: 3696: 3692: 3683: 3676: 3673: 3666: 3662: 3657: 3656: 3648: 3644: 3640: 3635: 3632: 3626: 3623: 3615: 3611: 3607: 3602: 3599: 3593: 3590: 3587: 3585: 3582: 3578: 3575: 3572: 3569: 3566: 3562: 3553: 3549: 3545: 3541: 3536: 3535: 3512: 3509: 3506: 3503: 3500: 3497: 3494: 3470: 3467: 3464: 3444: 3441: 3438: 3433: 3429: 3425: 3422: 3419: 3416: 3401: 3398: 3365: 3360: 3355: 3324: 3321: 3316: 3284: 3253: 3250: 3247: 3227: 3222: 3218: 3214: 3211: 3208: 3203: 3199: 3195: 3190: 3186: 3182: 3179: 3176: 3171: 3167: 3163: 3160: 3157: 3154: 3151: 3148: 3145: 3142: 3139: 3128:complex vector 3113: 3108: 3103: 3100: 3088: 3085: 3072: 3069: 3060: 3057: 3051: 3046: 3043: 3014: 3011: 3006: 3003: 2997: 2994: 2988: 2985: 2980: 2977: 2971: 2965: 2962: 2957: 2954: 2948: 2942: 2939: 2934: 2931: 2917: 2916: 2898: 2895: 2890: 2887: 2881: 2875: 2872: 2867: 2864: 2858: 2855: 2849: 2846: 2841: 2838: 2832: 2829: 2827: 2825: 2821: 2814: 2811: 2806: 2803: 2797: 2791: 2788: 2783: 2780: 2774: 2771: 2765: 2762: 2757: 2754: 2748: 2745: 2739: 2736: 2731: 2728: 2721: 2715: 2712: 2707: 2704: 2702: 2700: 2696: 2689: 2686: 2681: 2678: 2672: 2669: 2663: 2660: 2655: 2652: 2645: 2639: 2636: 2631: 2628: 2626: 2621: 2618: 2613: 2610: 2604: 2603: 2580: 2577: 2574: 2571: 2568: 2565: 2562: 2559: 2556: 2553: 2550: 2547: 2544: 2541: 2538: 2514: 2511: 2507: 2503: 2500: 2480: 2477: 2473: 2469: 2466: 2442: 2430: 2427: 2398: 2393: 2390: 2385: 2380: 2377: 2350: 2346: 2318: 2313: 2307: 2298: 2294: 2290: 2286: 2281: 2278: 2270: 2266: 2262: 2258: 2252: 2246: 2243: 2238: 2230: 2223: 2220: 2213: 2209: 2204: 2203: 2200: 2196: 2195: 2191: 2182: 2178: 2174: 2170: 2165: 2162: 2154: 2150: 2146: 2142: 2136: 2130: 2127: 2122: 2114: 2107: 2104: 2097: 2093: 2088: 2087: 2085: 2079: 2074: 2068: 2059: 2055: 2051: 2047: 2042: 2039: 2031: 2027: 2023: 2019: 2013: 2007: 2004: 1999: 1991: 1987: 1983: 1979: 1974: 1973: 1970: 1966: 1965: 1961: 1952: 1948: 1944: 1940: 1935: 1932: 1924: 1920: 1916: 1912: 1906: 1900: 1897: 1892: 1884: 1880: 1876: 1872: 1867: 1866: 1864: 1835: 1831: 1825: 1820: 1815: 1811: 1807: 1803: 1799: 1795: 1789: 1785: 1781: 1778: 1775: 1770: 1766: 1762: 1757: 1753: 1749: 1746: 1743: 1738: 1734: 1729: 1725: 1721: 1716: 1712: 1708: 1703: 1698: 1694: 1689: 1686: 1681: 1676: 1671: 1666: 1642: 1635: 1606: 1601: 1596: 1591: 1588: 1561: 1557: 1540: 1539: 1523: 1516: 1513: 1509: 1504: 1501: 1495: 1492: 1488: 1482: 1476: 1473: 1468: 1465: 1463: 1455: 1452: 1446: 1442: 1437: 1436: 1432: 1425: 1422: 1418: 1413: 1410: 1404: 1401: 1397: 1391: 1385: 1382: 1377: 1374: 1372: 1367: 1364: 1360: 1355: 1354: 1324: 1304: 1284: 1281: 1278: 1275: 1272: 1269: 1249: 1245: 1241: 1238: 1235: 1232: 1229: 1226: 1223: 1220: 1217: 1214: 1211: 1208: 1203: 1198: 1193: 1189: 1170: 1167: 1142: 1139: 1119:Wirtinger 1927 1110: 1107: 1095:Pompeiu (1913) 1062: 1057: 1053: 1049: 1046: 1035:differentiable 1007: 1004: 1001: 998: 995: 971: 943: 940: 937: 932: 928: 924: 921: 918: 915: 912: 909: 906: 901: 897: 893: 890: 879: 878: 867: 864: 860: 856: 853: 850: 847: 842: 839: 836: 831: 827: 823: 820: 816: 807: 803: 799: 796: 793: 789: 782: 779: 776: 772: 765: 762: 759: 755: 749: 744: 740: 736: 727: 724: 718: 713: 710: 676: 672: 668: 663: 659: 631: 628: 625: 622: 601:complex valued 584: 581: 559:expresses the 513:Amoroso (1912) 483: 482: 471: 468: 460: 456: 452: 446: 442: 438: 433: 428: 424: 397: 377: 374: 371: 349: 345: 341: 336: 332: 297: 286: 285: 274: 271: 268: 265: 262: 259: 253: 246: 242: 238: 233: 229: 225: 222: 217: 213: 209: 208: 203: 199: 195: 190: 186: 182: 179: 174: 170: 166: 165: 163: 132: 127: 110:Henri Poincaré 89: 86: 84: 81: 15: 13: 10: 9: 6: 4: 3: 2: 7759: 7748: 7745: 7743: 7740: 7738: 7735: 7734: 7732: 7721: 7717: 7713: 7708: 7704: 7700: 7695: 7692: 7688: 7684: 7680: 7676: 7672: 7668: 7664: 7662:0-387-97195-5 7658: 7654: 7650: 7649: 7644: 7640: 7637: 7633: 7629: 7618:on 2011-09-27 7617: 7613: 7609: 7608: 7602: 7598: 7594: 7590: 7586: 7582: 7580:0-471-83091-7 7576: 7572: 7568: 7564: 7560: 7559: 7554: 7549: 7545: 7541: 7537: 7533: 7529: 7523: 7519: 7515: 7514: 7508: 7504: 7500: 7496: 7492: 7488: 7486:0-444-88446-7 7482: 7478: 7477:North-Holland 7474: 7470: 7466: 7462: 7458: 7454: 7450: 7446: 7444:0-471-58986-1 7440: 7436: 7432: 7431: 7426: 7422: 7418: 7414: 7410: 7406: 7402: 7400:0-534-13308-8 7396: 7392: 7388: 7384: 7380: 7376: 7372: 7368: 7364: 7360: 7358:9780821869536 7354: 7350: 7349:Prentice-Hall 7346: 7342: 7341: 7336: 7332: 7328: 7324: 7320: 7316: 7312: 7308: 7304: 7300: 7297: 7295: 7289: 7278:on 2012-03-07 7277: 7273: 7269: 7268: 7263: 7259: 7258: 7254: 7249: 7245: 7241: 7236: 7232: 7228: 7224: 7220: 7216: 7212: 7209:(in German), 7208: 7207: 7202: 7198: 7194: 7191: 7187: 7183: 7179: 7175: 7171: 7167: 7163: 7159: 7155: 7151: 7147: 7143: 7140:(in French), 7139: 7138: 7133: 7129: 7125: 7121: 7117: 7113: 7109: 7105: 7101: 7098:(in French), 7097: 7096: 7091: 7087: 7083: 7079: 7074: 7069: 7066:(1): 89–178, 7065: 7062:(in French), 7061: 7060: 7055: 7051: 7048: 7043: 7039: 7035: 7031: 7027: 7023: 7019: 7015: 7011: 7007: 7003: 7000:(in German), 6999: 6998: 6993: 6989: 6988:Peschl, Ernst 6985: 6981: 6977: 6973: 6969: 6965: 6961: 6957: 6953: 6949: 6945: 6942: 6938: 6934: 6929: 6925: 6921: 6917: 6913: 6909: 6905: 6902: 6898: 6894: 6889: 6885: 6881: 6877: 6873: 6869: 6865: 6861: 6860: 6855: 6851: 6848: 6844: 6840: 6836: 6832: 6827: 6823: 6819: 6815: 6811: 6807: 6803: 6799: 6798: 6793: 6789: 6785: 6782: 6778: 6773: 6769: 6765: 6761: 6757: 6753: 6752: 6747: 6743: 6739: 6735: 6731: 6727: 6723: 6717: 6713: 6709: 6708: 6702: 6699: 6695: 6691: 6686: 6682: 6678: 6674: 6670: 6666: 6662: 6658: 6657: 6652: 6648: 6644: 6643: 6639: 6633: 6626: 6622: 6618: 6614: 6610: 6607:but only for 6606: 6590: 6586: 6576: 6573:, p. 5: 6572: 6568: 6562: 6559: 6555: 6538: 6534: 6523: 6520: 6516: 6512: 6506: 6503: 6499: 6495: 6491: 6487: 6483: 6477: 6474: 6470: 6466: 6460: 6457: 6453: 6440: 6430: 6416: 6412: 6408: 6392: 6384: 6365: 6359: 6351: 6327: 6323: 6302: 6299: 6289: 6272: 6266: 6263: 6259: 6253: 6250: 6246: 6240: 6237: 6233: 6229: 6225: 6221: 6217: 6213: 6212:Fichera (1969 6209: 6205: 6204:Henrici (1993 6199: 6196: 6192: 6191: 6186: 6180: 6177: 6173: 6169: 6165: 6164:Dover edition 6159: 6156: 6152: 6148: 6132: 6124: 6123:Poincaré 1899 6118: 6115: 6111: 6108: 6106: 6101: 6100:Poincaré 1899 6097: 6093: 6087: 6084: 6080: 6079:Poincaré 1899 6074: 6071: 6067: 6063: 6059: 6055: 6054:Poincaré 1899 6049: 6046: 6042: 6038: 6032: 6029: 6026:, p. 10. 6025: 6021: 6015: 6012: 6006: 6002: 5999: 5997: 5994: 5992: 5989: 5987: 5984: 5983: 5979: 5954: 5950: 5935: 5923: 5921: 5910: 5902: 5892: 5880: 5871: 5856: 5846: 5828: 5816: 5814: 5803: 5795: 5791: 5782: 5773: 5759: 5758: 5757: 5743: 5740: 5737: 5734: 5731: 5728: 5725: 5705: 5691: 5687: 5683: 5680: 5665: 5640: 5630: 5616: 5606: 5592: 5588: 5585: 5577: 5567: 5555: 5545: 5539: 5534: 5531: 5528: 5524: 5520: 5512: 5502: 5488: 5484: 5473: 5469: 5466: 5458: 5454: 5445: 5435: 5429: 5424: 5421: 5418: 5414: 5410: 5408: 5402: 5398: 5395: 5392: 5388: 5379: 5369: 5344: 5340: 5329: 5319: 5305: 5301: 5298: 5290: 5280: 5268: 5258: 5252: 5247: 5244: 5241: 5237: 5233: 5225: 5221: 5210: 5206: 5195: 5191: 5188: 5180: 5176: 5167: 5157: 5151: 5146: 5143: 5140: 5136: 5132: 5130: 5124: 5120: 5117: 5114: 5110: 5101: 5097: 5076: 5075: 5074: 5072: 5056: 5053: 5050: 5047: 5044: 5041: 5038: 5018: 5011: 5004: 4993: 4989: 4985: 4982: 4956: 4952: 4940: 4936: 4932: 4929: 4914: 4911:Functions of 4910: 4881: 4864: 4851: 4847: 4844: 4832: 4821: 4811: 4807: 4795: 4784: 4774: 4770: 4767: 4761: 4753: 4743: 4739: 4737: 4729: 4726: 4723: 4708: 4686: 4672: 4659: 4655: 4652: 4640: 4629: 4619: 4615: 4609: 4601: 4591: 4587: 4584: 4578: 4570: 4560: 4556: 4554: 4546: 4543: 4540: 4531: 4511: 4510: 4509: 4507: 4491: 4485: 4473: 4453: 4439: 4435: 4431: 4428: 4425: 4422: 4407: 4405: 4403: 4386: 4373: 4370: 4343: 4336: 4333: 4326: 4308: 4298: 4294: 4268: 4258: 4254: 4243: 4239: 4235: 4231: 4223: 4221: 4219: 4215: 4211: 4183: 4173: 4161: 4152: 4149: 4146: 4143: 4140: 4132: 4122: 4110: 4101: 4099: 4091: 4088: 4085: 4074: 4064: 4039: 4035: 4026: 4017: 4014: 4011: 4008: 4005: 3997: 3993: 3984: 3975: 3973: 3965: 3962: 3959: 3948: 3944: 3923: 3922: 3921: 3919: 3903: 3900: 3897: 3894: 3891: 3888: 3885: 3865: 3851: 3847: 3843: 3840: 3837: 3834: 3819: 3794: 3784: 3772: 3763: 3760: 3752: 3742: 3730: 3721: 3718: 3716: 3710: 3706: 3703: 3700: 3697: 3694: 3690: 3681: 3671: 3646: 3642: 3633: 3624: 3621: 3613: 3609: 3600: 3591: 3588: 3586: 3580: 3576: 3573: 3570: 3567: 3564: 3560: 3551: 3547: 3526: 3525: 3524: 3510: 3507: 3504: 3501: 3498: 3495: 3492: 3484: 3468: 3465: 3462: 3431: 3427: 3423: 3420: 3417: 3414: 3399: 3397: 3395: 3392:(ordinary or 3391: 3387: 3386: 3381: 3380: 3363: 3358: 3343: 3340: 3322: 3319: 3305: 3302: 3298: 3275: 3271: 3267: 3251: 3248: 3245: 3220: 3216: 3212: 3209: 3206: 3201: 3197: 3193: 3188: 3184: 3180: 3177: 3174: 3169: 3165: 3158: 3152: 3149: 3146: 3140: 3137: 3129: 3111: 3101: 3098: 3086: 3084: 3070: 3067: 3055: 3044: 3029: 3012: 3004: 2995: 2992: 2986: 2978: 2969: 2963: 2955: 2946: 2940: 2932: 2896: 2893: 2888: 2885: 2879: 2873: 2865: 2856: 2853: 2847: 2839: 2830: 2828: 2819: 2812: 2804: 2795: 2789: 2781: 2772: 2769: 2763: 2755: 2746: 2743: 2737: 2729: 2719: 2713: 2710: 2705: 2703: 2694: 2687: 2679: 2670: 2667: 2661: 2653: 2643: 2637: 2634: 2629: 2627: 2619: 2611: 2594: 2593: 2592: 2575: 2569: 2566: 2563: 2557: 2551: 2548: 2542: 2536: 2528: 2512: 2509: 2505: 2501: 2498: 2478: 2471: 2467: 2456: 2440: 2428: 2426: 2424: 2420: 2416: 2412: 2396: 2391: 2388: 2378: 2368: 2364: 2348: 2344: 2334: 2329: 2316: 2305: 2296: 2292: 2279: 2276: 2268: 2264: 2250: 2244: 2241: 2236: 2228: 2218: 2198: 2189: 2180: 2176: 2163: 2160: 2152: 2148: 2134: 2128: 2125: 2120: 2112: 2102: 2083: 2077: 2066: 2057: 2053: 2040: 2037: 2029: 2025: 2011: 2005: 2002: 1997: 1989: 1985: 1968: 1959: 1950: 1946: 1933: 1930: 1922: 1918: 1904: 1898: 1895: 1890: 1882: 1878: 1862: 1852: 1849: 1833: 1829: 1823: 1813: 1805: 1797: 1793: 1787: 1783: 1779: 1776: 1773: 1768: 1764: 1760: 1755: 1751: 1747: 1744: 1741: 1736: 1732: 1727: 1723: 1719: 1710: 1701: 1696: 1692: 1687: 1684: 1674: 1669: 1655: 1654:complex field 1651: 1648:Consider the 1646:Definition 2. 1640: 1637:Functions of 1636: 1634: 1632: 1628: 1624: 1620: 1604: 1599: 1589: 1579: 1575: 1559: 1555: 1545: 1521: 1514: 1502: 1499: 1493: 1480: 1474: 1471: 1466: 1464: 1450: 1430: 1423: 1411: 1408: 1402: 1389: 1383: 1380: 1375: 1373: 1365: 1345: 1344: 1343: 1341: 1338: 1322: 1302: 1282: 1279: 1276: 1273: 1270: 1267: 1239: 1236: 1233: 1230: 1227: 1221: 1218: 1215: 1206: 1201: 1191: 1179: 1178:complex plane 1176:Consider the 1174:Definition 1. 1168: 1166: 1164: 1160: 1156: 1152: 1148: 1140: 1138: 1136: 1132: 1131:Levi operator 1128: 1124: 1120: 1117:in the paper 1116: 1108: 1106: 1104: 1100: 1096: 1092: 1088: 1084: 1080: 1076: 1075:Fichera (1969 1073:According to 1060: 1055: 1051: 1047: 1044: 1036: 1032: 1031:Henrici (1993 1028: 1025: 1021: 1005: 999: 993: 985: 969: 961: 957: 938: 935: 930: 926: 919: 913: 907: 904: 899: 895: 865: 862: 851: 845: 837: 834: 829: 825: 814: 805: 801: 797: 794: 791: 787: 780: 774: 753: 742: 738: 722: 711: 697: 696: 695: 694: 690: 674: 666: 661: 657: 649: 645: 644:neighbourhood 626: 620: 613: 609: 608:real analysis 605: 602: 598: 594: 590: 589:Henrici (1993 587:According to 582: 580: 578: 574: 570: 566: 565:Levi operator 562: 558: 554: 550: 546: 542: 538: 537:Osgood (1966) 534: 530: 526: 522: 518: 514: 510: 506: 502: 498: 494: 493:Poincaré 1899 490: 489: 469: 466: 458: 454: 450: 444: 440: 436: 431: 426: 422: 411: 410: 409: 395: 375: 372: 369: 347: 343: 339: 334: 330: 322: 319: 315: 311: 295: 272: 269: 266: 263: 260: 257: 244: 240: 236: 231: 227: 223: 220: 215: 211: 201: 197: 193: 188: 184: 180: 177: 172: 168: 161: 152: 151: 150: 148: 130: 115: 111: 107: 106:Remmert (1991 103: 99: 98:Poincaré 1899 95: 87: 82: 80: 78: 74: 70: 66: 62: 58: 54: 53:real variable 50: 46: 42: 38: 34: 30: 26: 22: 7719: 7698: 7647: 7635: 7627: 7620:, retrieved 7616:the original 7606: 7557: 7512: 7472: 7429: 7386: 7339: 7313:(3): 61–83, 7310: 7306: 7293: 7287: 7280:, retrieved 7276:the original 7266: 7210: 7204: 7169: 7166:Vekua, I. N. 7141: 7135: 7099: 7093: 7063: 7057: 7054:Poincaré, H. 7001: 6995: 6951: 6932: 6919: 6915: 6892: 6866:(1): 69–79, 6863: 6857: 6839:hypersurface 6830: 6804:(1): 61–87, 6801: 6795: 6776: 6758:(1): 27–37, 6755: 6749: 6706: 6689: 6663:(1): 75–85, 6660: 6654: 6624: 6608: 6571:Gunning 1990 6561: 6522: 6505: 6476: 6459: 6274: 6265: 6258:Henrici 1993 6252: 6239: 6198: 6188: 6185:Osgood (1966 6179: 6158: 6117: 6107:-dimensional 6104: 6086: 6073: 6048: 6031: 6020:Fichera 1986 6014: 5669: 4918: 4912: 4411: 4233: 4227: 4207: 3918:product rule 3823: 3820:Product rule 3403: 3385:definition 2 3383: 3379:definition 1 3377: 3344:counterpart 3269: 3266:real vectors 3090: 3030: 2918: 2432: 2330: 1644: 1638: 1541: 1172: 1144: 1112: 880: 597:Pompeiu 1912 586: 488:definition 2 486: 484: 310:biharmonique 309: 287: 91: 32: 28: 18: 7569:, pp.  7213:: 357–375, 7132:Pompeiu, D. 7090:Pompeiu, D. 7004:: 574–594, 6841:can be the 6271:Vekua (1962 6224:integration 6168:Osgood 1966 6037:derivatives 5986:CR–function 5666:Conjugation 4218:derivatives 4210:derivations 3485:, then for 3390:derivatives 646:of a given 599:), given a 577:Levi-Civita 505:Levi (1910) 149:as follows 49:derivatives 7731:Categories 7707:0094.28002 7679:0780.30001 7622:2010-08-24 7597:0644.35005 7544:0528.32001 7503:0685.32001 7461:1107.30300 7417:0699.32001 7375:0141.08601 7327:0705.32006 7282:2010-08-28 7227:52.0342.03 7190:0100.07603 7116:43.0481.01 7082:29.0370.02 7042:0004.30001 7018:58.1096.05 6980:0138.30901 6964:45.0661.02 6928:36.0482.01 6880:42.0449.02 6818:41.0487.01 6772:0201.10002 6738:0981.30001 6677:43.0453.03 6634:References 6498:operations 6094:, and the 5071:chain rule 4506:chain rule 4402:smoothness 4238:chain rule 4232:: for the 4224:Chain rule 3339:isomorphic 3337:or in its 1091:Ilia Vekua 962:of radius 63:or simply 7471:(1990) , 7427:(1993) , 7235:121149132 7158:121616964 7124:120717465 7034:127138808 6950:(1966) , 6943:is given. 6901:Levi 1910 6888:120133326 6826:122678686 6700:is given. 6685:122956910 6605:functions 6554:functions 6434:¯ 6425:∂ 6336:Ω 6303:∈ 6293:¯ 6284:∂ 5947:∂ 5939:¯ 5930:∂ 5915:¯ 5896:¯ 5886:∂ 5878:∂ 5850:¯ 5840:∂ 5832:¯ 5823:∂ 5808:¯ 5788:∂ 5780:∂ 5738:… 5718:then for 5700:Ω 5684:∈ 5634:¯ 5624:∂ 5610:¯ 5600:∂ 5586:∘ 5571:¯ 5561:∂ 5553:∂ 5525:∑ 5506:¯ 5496:∂ 5481:∂ 5467:∘ 5451:∂ 5443:∂ 5415:∑ 5396:∘ 5373:¯ 5363:∂ 5359:∂ 5337:∂ 5323:¯ 5313:∂ 5299:∘ 5284:¯ 5274:∂ 5266:∂ 5238:∑ 5218:∂ 5203:∂ 5189:∘ 5173:∂ 5165:∂ 5137:∑ 5118:∘ 5094:∂ 5090:∂ 5051:… 5031:then for 5009:Ω 5002:Ω 4986:∈ 4960:Ω 4950:Ω 4933:∈ 4920:Lemma 3.2 4885:¯ 4876:∂ 4868:¯ 4859:∂ 4845:∘ 4836:¯ 4827:∂ 4819:∂ 4799:¯ 4790:∂ 4782:∂ 4768:∘ 4759:∂ 4751:∂ 4727:∘ 4712:¯ 4703:∂ 4699:∂ 4684:∂ 4676:¯ 4667:∂ 4653:∘ 4644:¯ 4635:∂ 4627:∂ 4607:∂ 4599:∂ 4585:∘ 4576:∂ 4568:∂ 4544:∘ 4529:∂ 4525:∂ 4504:then the 4489:Ω 4486:⊆ 4480:Ω 4448:Ω 4432:∈ 4413:Lemma 3.1 4384:Ω 4380:→ 4377:Ω 4351:Ω 4348:→ 4341:Ω 4299:⊆ 4292:Ω 4259:⊆ 4252:Ω 4212:from the 4177:¯ 4167:∂ 4159:∂ 4153:⋅ 4141:⋅ 4126:¯ 4116:∂ 4108:∂ 4089:⋅ 4068:¯ 4058:∂ 4054:∂ 4032:∂ 4024:∂ 4018:⋅ 4006:⋅ 3990:∂ 3982:∂ 3963:⋅ 3941:∂ 3937:∂ 3898:… 3878:then for 3860:Ω 3844:∈ 3788:¯ 3778:∂ 3770:∂ 3764:β 3746:¯ 3736:∂ 3728:∂ 3722:α 3704:β 3695:α 3675:¯ 3665:∂ 3661:∂ 3639:∂ 3631:∂ 3625:β 3606:∂ 3598:∂ 3592:α 3574:β 3565:α 3544:∂ 3540:∂ 3505:… 3469:β 3463:α 3440:Ω 3424:∈ 3400:Linearity 3283:Ω 3210:… 3178:… 3141:≡ 3130:and that 3102:∈ 3059:¯ 3050:∂ 3042:∂ 3010:∂ 3002:∂ 2996:− 2984:∂ 2976:∂ 2961:∂ 2953:∂ 2938:∂ 2930:∂ 2871:∂ 2863:∂ 2845:∂ 2837:∂ 2810:∂ 2802:∂ 2787:∂ 2779:∂ 2770:− 2761:∂ 2753:∂ 2735:∂ 2727:∂ 2685:∂ 2677:∂ 2668:− 2659:∂ 2651:∂ 2617:∂ 2609:∂ 2476:∂ 2465:∂ 2413:and have 2379:⊂ 2376:Ω 2363:functions 2289:∂ 2285:∂ 2261:∂ 2257:∂ 2222:¯ 2212:∂ 2208:∂ 2199:⋮ 2173:∂ 2169:∂ 2145:∂ 2141:∂ 2106:¯ 2096:∂ 2092:∂ 2050:∂ 2046:∂ 2038:− 2022:∂ 2018:∂ 1982:∂ 1978:∂ 1969:⋮ 1943:∂ 1939:∂ 1931:− 1915:∂ 1911:∂ 1875:∂ 1871:∂ 1814:∈ 1798:∣ 1777:… 1745:… 1621:and have 1590:⊆ 1587:Ω 1574:functions 1512:∂ 1508:∂ 1491:∂ 1487:∂ 1454:¯ 1445:∂ 1441:∂ 1421:∂ 1417:∂ 1409:− 1400:∂ 1396:∂ 1363:∂ 1359:∂ 1240:∈ 1228:∣ 1192:≡ 1155:monograph 917:∂ 889:Γ 819:Γ 815:∮ 795:π 778:→ 726:¯ 717:∂ 709:∂ 667:∈ 610:) of one 511:) and of 509:Levi 1911 321:variables 308:he calls 267:⩽ 261:⩽ 221:− 7645:(1991), 7555:(1988), 7385:(1990), 7347:, N.J.: 7264:(1976), 7199:(1927), 7168:(1962), 6990:(1932), 6910:(1905), 6843:boundary 6790:(1910), 6649:(1912), 6226:to be a 6151:variable 6064:, while 5980:See also 5671:Lemma 4. 5012:″ 4953:′ 4387:″ 4344:′ 4323:and two 4295:″ 4255:′ 3825:Lemma 2. 3405:Lemma 1. 1133:and the 1027:variable 956:boundary 563:and the 145:and its 7671:1084167 7589:0941372 7571:xiv+394 7536:0716497 7495:1045639 7453:0822470 7409:1052649 7367:0180696 7319:0917525 7182:0150320 7026:1512774 6972:0201668 6764:0265616 6730:1831783 6575:Gunning 6490:algebra 6488:of the 6486:closure 6415:Sobolev 6407:Pompeiu 4242:domains 3394:partial 3342:complex 3299:in the 3268:, with 1652:on the 1085:in the 954:is the 569:Amoroso 531:of the 7705:  7685:  7677:  7669:  7659:  7595:  7587:  7577:  7542:  7534:  7524:  7501:  7493:  7483:  7459:  7451:  7441:  7415:  7407:  7397:  7373:  7365:  7355:  7325:  7317:  7233:  7225:  7188:  7180:  7156:  7122:  7114:  7080:  7040:  7032:  7024:  7016:  6978:  6970:  6962:  6926:  6886:  6878:  6824:  6816:  6770:  6762:  6736:  6728:  6718:  6683:  6675:  6228:circle 6220:domain 5073:holds 4508:holds 3920:holds 3297:domain 3274:subset 3238:where 2411:linear 2367:domain 2333:domain 1848:linear 1619:linear 1578:domain 1544:domain 1337:linear 1020:circle 881:where 557:Osgood 43:, are 7309:, 8, 7231:S2CID 7154:S2CID 7120:S2CID 7030:S2CID 6956:Dover 6884:S2CID 6864:XVIII 6845:of a 6822:S2CID 6681:S2CID 6623:with 6210:: as 6121:See ( 6007:Notes 4220:are. 3126:is a 2419:space 2365:on a 1627:space 1576:on a 1081:as a 958:of a 693:limit 648:point 547:of a 507:(and 362:with 7683:ISBN 7657:ISBN 7575:ISBN 7522:ISBN 7481:ISBN 7439:ISBN 7395:ISBN 7353:ISBN 6939:for 6802:XVII 6716:ISBN 6696:for 6565:See 6381:has 6183:See 4975:and 4466:and 4363:and 4325:maps 4283:and 3916:the 3481:are 3455:and 3382:and 3301:real 3264:are 1315:and 1089:was 960:disk 575:and 573:Levi 527:and 525:real 318:real 23:and 7703:Zbl 7675:Zbl 7626:. " 7593:Zbl 7540:Zbl 7499:Zbl 7457:Zbl 7413:Zbl 7371:Zbl 7323:Zbl 7223:JFM 7215:doi 7186:Zbl 7146:doi 7112:JFM 7104:doi 7078:JFM 7068:doi 7038:Zbl 7014:JFM 7006:doi 7002:106 6976:Zbl 6960:JFM 6931:. " 6924:JFM 6920:XIV 6891:. " 6876:JFM 6868:doi 6829:. " 6814:JFM 6806:doi 6775:. " 6768:Zbl 6756:XIV 6734:Zbl 6688:. " 6673:JFM 6665:doi 6492:of 6385:in 6222:of 6056:of 5673:If 4922:If 4415:If 3827:If 3407:If 3396:). 2453:is 2421:of 1629:of 1157:of 1149:by 1037:at 986:of 771:lim 116:in 67:on 19:In 7733:: 7722:". 7673:, 7667:MR 7665:, 7638:". 7591:, 7585:MR 7583:, 7573:, 7561:, 7538:, 7532:MR 7530:, 7497:, 7491:MR 7489:, 7479:, 7455:, 7449:MR 7447:, 7411:, 7405:MR 7403:, 7369:, 7363:MR 7361:, 7321:, 7315:MR 7311:18 7286:. 7229:, 7221:, 7211:97 7203:, 7184:, 7178:MR 7152:, 7142:35 7118:, 7110:, 7100:33 7076:, 7064:22 7036:, 7028:, 7022:MR 7020:, 7012:, 6994:, 6974:, 6968:MR 6966:, 6914:, 6903:). 6882:, 6874:, 6820:, 6812:, 6794:, 6766:, 6760:MR 6732:, 6726:MR 6724:, 6679:, 6671:, 6661:33 6653:, 3028:. 2425:. 1633:. 1105:. 579:. 571:, 503:, 79:. 59:, 27:, 7600:. 7547:. 7506:. 7464:. 7420:. 7378:. 7330:. 7298:. 7296:" 7250:. 7217:: 7161:. 7148:: 7127:. 7106:: 7085:. 7070:: 7049:. 7008:: 6983:. 6870:: 6849:. 6808:: 6783:. 6741:. 6667:: 6625:p 6609:p 6591:1 6587:C 6539:1 6535:C 6454:. 6441:w 6431:z 6393:G 6369:) 6366:z 6363:( 6360:w 6339:) 6333:( 6328:p 6324:L 6300:w 6290:z 6166:( 6133:d 6112:. 6105:n 6043:. 5955:i 5951:z 5936:f 5924:= 5911:) 5903:i 5893:z 5881:f 5872:( 5857:i 5847:z 5829:f 5817:= 5804:) 5796:i 5792:z 5783:f 5774:( 5744:n 5741:, 5735:, 5732:1 5729:= 5726:i 5706:, 5703:) 5697:( 5692:1 5688:C 5681:f 5641:i 5631:z 5617:j 5607:g 5593:) 5589:g 5578:j 5568:z 5556:f 5546:( 5540:n 5535:1 5532:= 5529:j 5521:+ 5513:i 5503:z 5489:j 5485:g 5474:) 5470:g 5459:j 5455:z 5446:f 5436:( 5430:n 5425:1 5422:= 5419:j 5411:= 5403:) 5399:g 5393:f 5389:( 5380:i 5370:z 5345:i 5341:z 5330:j 5320:g 5306:) 5302:g 5291:j 5281:z 5269:f 5259:( 5253:n 5248:1 5245:= 5242:j 5234:+ 5226:i 5222:z 5211:j 5207:g 5196:) 5192:g 5181:j 5177:z 5168:f 5158:( 5152:n 5147:1 5144:= 5141:j 5133:= 5125:) 5121:g 5115:f 5111:( 5102:i 5098:z 5057:m 5054:, 5048:, 5045:1 5042:= 5039:i 5019:, 5016:) 5005:, 4999:( 4994:1 4990:C 4983:f 4963:) 4957:, 4946:( 4941:1 4937:C 4930:g 4913:n 4882:z 4865:g 4852:) 4848:g 4833:z 4822:f 4812:( 4808:+ 4796:z 4785:g 4775:) 4771:g 4762:z 4754:f 4744:( 4740:= 4733:) 4730:g 4724:f 4721:( 4709:z 4687:z 4673:g 4660:) 4656:g 4641:z 4630:f 4620:( 4616:+ 4610:z 4602:g 4592:) 4588:g 4579:z 4571:f 4561:( 4557:= 4550:) 4547:g 4541:f 4538:( 4532:z 4492:, 4483:) 4477:( 4474:g 4454:, 4451:) 4445:( 4440:1 4436:C 4429:g 4426:, 4423:f 4374:: 4371:f 4337:: 4334:g 4309:p 4304:C 4269:m 4264:C 4234:n 4184:i 4174:z 4162:g 4150:f 4147:+ 4144:g 4133:i 4123:z 4111:f 4102:= 4095:) 4092:g 4086:f 4083:( 4075:i 4065:z 4040:i 4036:z 4027:g 4015:f 4012:+ 4009:g 3998:i 3994:z 3985:f 3976:= 3969:) 3966:g 3960:f 3957:( 3949:i 3945:z 3904:n 3901:, 3895:, 3892:1 3889:= 3886:i 3866:, 3863:) 3857:( 3852:1 3848:C 3841:g 3838:, 3835:f 3795:i 3785:z 3773:g 3761:+ 3753:i 3743:z 3731:f 3719:= 3711:) 3707:g 3701:+ 3698:f 3691:( 3682:i 3672:z 3647:i 3643:z 3634:g 3622:+ 3614:i 3610:z 3601:f 3589:= 3581:) 3577:g 3571:+ 3568:f 3561:( 3552:i 3548:z 3511:n 3508:, 3502:, 3499:1 3496:= 3493:i 3466:, 3443:) 3437:( 3432:1 3428:C 3421:g 3418:, 3415:f 3364:. 3359:n 3354:C 3323:n 3320:2 3315:R 3270:n 3252:y 3249:, 3246:x 3226:) 3221:n 3217:y 3213:, 3207:, 3202:1 3198:y 3194:, 3189:n 3185:x 3181:, 3175:, 3170:1 3166:x 3162:( 3159:= 3156:) 3153:y 3150:, 3147:x 3144:( 3138:z 3112:n 3107:C 3099:z 3071:0 3068:= 3056:z 3045:f 3013:x 3005:v 2993:= 2987:y 2979:u 2970:, 2964:y 2956:v 2947:= 2941:x 2933:u 2897:z 2894:d 2889:f 2886:d 2880:= 2874:z 2866:v 2857:i 2854:+ 2848:z 2840:u 2831:= 2820:) 2813:y 2805:v 2796:+ 2790:y 2782:u 2773:i 2764:x 2756:v 2747:i 2744:+ 2738:x 2730:u 2720:( 2714:2 2711:1 2706:= 2695:) 2688:y 2680:f 2671:i 2662:x 2654:f 2644:( 2638:2 2635:1 2630:= 2620:z 2612:f 2579:) 2576:z 2573:( 2570:v 2567:i 2564:+ 2561:) 2558:z 2555:( 2552:u 2549:= 2546:) 2543:z 2540:( 2537:f 2513:z 2510:d 2506:/ 2502:f 2499:d 2479:z 2472:/ 2468:f 2441:f 2397:, 2392:n 2389:2 2384:R 2349:1 2345:C 2317:. 2306:) 2297:n 2293:y 2280:i 2277:+ 2269:n 2265:x 2251:( 2245:2 2242:1 2237:= 2229:n 2219:z 2190:) 2181:1 2177:y 2164:i 2161:+ 2153:1 2149:x 2135:( 2129:2 2126:1 2121:= 2113:1 2103:z 2084:{ 2078:, 2067:) 2058:n 2054:y 2041:i 2030:n 2026:x 2012:( 2006:2 2003:1 1998:= 1990:n 1986:z 1960:) 1951:1 1947:y 1934:i 1923:1 1919:x 1905:( 1899:2 1896:1 1891:= 1883:1 1879:z 1863:{ 1834:. 1830:} 1824:n 1819:R 1810:y 1806:, 1802:x 1794:) 1788:n 1784:y 1780:, 1774:, 1769:1 1765:y 1761:, 1756:n 1752:x 1748:, 1742:, 1737:1 1733:x 1728:( 1724:= 1720:) 1715:y 1711:, 1707:x 1702:( 1697:{ 1693:= 1688:n 1685:2 1680:R 1675:= 1670:n 1665:C 1639:n 1605:, 1600:2 1595:R 1560:1 1556:C 1522:) 1515:y 1503:i 1500:+ 1494:x 1481:( 1475:2 1472:1 1467:= 1451:z 1431:) 1424:y 1412:i 1403:x 1390:( 1384:2 1381:1 1376:= 1366:z 1323:y 1303:x 1283:y 1280:i 1277:+ 1274:x 1271:= 1268:z 1248:} 1244:R 1237:y 1234:, 1231:x 1225:) 1222:y 1219:, 1216:x 1213:( 1210:{ 1207:= 1202:2 1197:R 1188:C 1061:. 1056:0 1052:z 1048:= 1045:z 1006:, 1003:) 1000:z 997:( 994:g 970:r 942:) 939:r 936:, 931:0 927:z 923:( 920:D 914:= 911:) 908:r 905:, 900:0 896:z 892:( 866:, 863:z 859:d 855:) 852:z 849:( 846:g 841:) 838:r 835:, 830:0 826:z 822:( 806:2 802:r 798:i 792:2 788:1 781:0 775:r 764:f 761:e 758:d 754:= 748:) 743:0 739:z 735:( 723:z 712:g 675:, 671:C 662:0 658:z 630:) 627:z 624:( 621:g 470:0 467:= 459:q 455:u 451:d 445:k 441:z 437:d 432:V 427:2 423:d 396:n 376:q 373:, 370:k 348:q 344:y 340:, 335:k 331:x 296:V 273:. 270:n 264:k 258:1 245:k 241:u 237:= 232:k 228:y 224:i 216:k 212:x 202:k 198:z 194:= 189:k 185:y 181:i 178:+ 173:k 169:x 162:{ 131:n 126:C

Index

complex analysis of one
several complex variables
Wilhelm Wirtinger
theory of functions of several complex variables
partial differential operators
derivatives
real variable
holomorphic functions
antiholomorphic functions
differentiable functions
complex domains
differential calculus
functions of real variables
complex analysis
Poincaré 1899
Cherry & Ye (2001
Remmert (1991
Henri Poincaré
complex variable
complex conjugate
partial derivatives
real
variables
definition 2
Poincaré 1899
theory of functions of several complex variables
Levi-Civita (1905)
Levi (1910)
Levi 1911
Amoroso (1912)

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.