Knowledge (XXG)

Hartogs's extension theorem

Source 📝

358: 473: 201: 2306:"Zur Theorie der analytischen Funktionen mehrerer unabhĂ€ngiger VerĂ€nderlichen, insbesondere ĂŒber die Darstellung derselber durch Reihen welche nach Potentzen einer VerĂ€nderlichen fortschreiten" 2556: 505: 2524:, Teubners Sammlung von LehrbĂŒchern auf dem Gebiet der mathematischen Wissenschaften mit Einschluss ihrer Anwendungen (in German), vol. Bd. XX - 1 (2nd ed.), Leipzig: 693: 560: 590: 637: 50:, therefore the singular set of a function of several complex variables must (loosely speaking) 'go off to infinity' in some direction. More precisely, it shows that an 1100:. Therefore, the Hartogs's phenomenon is an elementary phenomenon that highlights the difference between the theory of functions of one and several complex variables. 2013:. A fundamental paper in the theory of Hartogs's phenomenon. The typographical error in the title is reproduced as it appears in the original version of the paper. 663: 1978: 610: 533: 136: 2443: 1856: 1819: 366: 2593: 2177: 2101: 1036:
is identically constant. Since it is zero near infinity, unique continuation applies to show that it is identically zero on some open subset of
132: 2739: 2554:(1932), "Una proprietĂ  fondamentale dei campi di olomorfismo di una funzione analitica di una variabile reale e di una variabile complessa", 2050: 1680: 1577: 1489: 1214: 184: 27: 1605: 353:{\displaystyle H_{\varepsilon }=\{z=(z_{1},z_{2})\in \Delta ^{2}:|z_{1}|<\varepsilon \ \ {\text{or}}\ \ 1-\varepsilon <|z_{2}|\}} 2734: 1574:
Lectures on analytic functions of several complex variables – Lectured in 1956–57 at the Istituto Nazionale di Alta Matematica in Rome
2598: 2533: 2448: 2367: 2190: 2106: 1387: 1561:
Lezioni sulle funzioni analitiche di piĂč variabili complesse – Tenute nel 1956–57 all'Istituto Nazionale di Alta Matematica in Roma
1054:
and the existence part of Hartog's theorem is proved. Uniqueness is automatic from unique continuation, based on connectedness of
2432: 1859:[Extension of a theorem of Fichera for systems of P.D.E. with constant coefficients, concerning Hartogs's phenomenon], 2020:(1957), "Caratterizzazione della traccia, sulla frontiera di un campo, di una funzione analitica di piĂč variabili complesse", 1455: 1453:
Range, R. Michael (2002), "Extension phenomena in multidimensional complex analysis: correction of the historical record",
2684: 1629: 1379: 180: 172: 108: 2396:(January 12, 1973), "On continuation of regular solutions of partial differential equations with constant coefficients", 140: 2583:
A fundamental property of the domain of holomorphy of an analytic function of one real variable and one complex variable
128: 2679: 1857:"Estensione di un teorema di Fichera relativo al fenomeno di Hartogs per sistemi differenziali a coefficenti costanti" 1162:, p. 284) for a proof (however, in the former reference it is incorrectly stated that the proof is on page 324). 2282:
Sitzungsberichte der Königlich Bayerischen Akademie der Wissenschaften zu MĂŒnchen, Mathematisch-Physikalische Klasse
1929: 35: 2055:
Characterization of the trace, on the boundary of a domain, of an analytic function of several complex variables
2654: 2504: 2262: 2162: 1643: 2358:, North–Holland Mathematical Library, vol. 7 (3rd (Revised) ed.), Amsterdam–London–New York–Tokyo: 1884: 1847: 478: 1585: 1141: 761: 1369: 1134:, pp. 132–134). In particular, in this last reference on p. 132, the Author explicitly writes :-" 179:), and his ideas were later further explored by Giuliano Bratti. Also the Japanese school of the theory of 1537: 1924: 999:, this (0,1)-form additionally has compact support, so that the PoincarĂ© lemma identifies an appropriate 90: 2310: 1703: 55: 43: 2639: 2489: 2239: 2147: 668: 2066:
Rendiconti Dell' Istituto Lombardo di Scienze e Lettere. Scienze MatemĂ tiche e Applicazioni, Series A.
538: 2674: 1762: 1684: 1589: 719: 702: 164: 112: 103:: however, the locution "Hartogs's phenomenon" is also used to identify the property of solutions of 51: 39: 2277: 2515: 1639:
Methods of the theory of functions of several complex variables. With a foreword of N.N. Bogolyubov
1413: 104: 94: 2557:
Rendiconti della Accademia Nazionale dei Lincei, Classe di Scienze Fisiche, Matematiche e Naturali
2393: 2022:
Rendiconti della Accademia Nazionale dei Lincei, Classe di Scienze Fisiche, Matematiche e Naturali
1509:
Rendiconti della Accademia Nazionale dei Lincei, Classe di Scienze Fisiche, Matematiche e Naturali
565: 2623: 2473: 2335: 2223: 2131: 2046: 1720: 1637: 1480: 797:— the last in the form that for any smooth and compactly supported differential (0,1)-form 615: 168: 183:
worked much on this topic, with notable contributions by Akira Kaneko. Their approach is to use
2691: 2305: 2278:"Einige Folgerungen aus der Cauchyschen Integralformel bei Funktionen mehrerer VerĂ€nderlichen." 2529: 2363: 2351: 2301: 2273: 1798: 1541: 1533: 1383: 794: 723: 160: 124: 70: 59: 2631: 2607: 2589: 2573: 2565: 2551: 2539: 2481: 2457: 2423: 2405: 2381: 2327: 2319: 2289: 2251: 2231: 2207: 2199: 2139: 2123: 2115: 2081: 2037: 2005: 1987: 1962: 1946: 1938: 1913: 1876: 1839: 1806: 1788: 1770: 1736: 1712: 1676: 1663: 1617: 1564: 1556: 1524: 1516: 1504: 1497: 1464: 1441: 1425: 1401: 2619: 2469: 2419: 2377: 2219: 2077: 2033: 2001: 1958: 1909: 1872: 1835: 1784: 1732: 1659: 1613: 1476: 1437: 1397: 2658: 2635: 2615: 2577: 2569: 2543: 2508: 2485: 2465: 2439: 2427: 2415: 2385: 2373: 2331: 2293: 2266: 2255: 2235: 2215: 2211: 2166: 2143: 2127: 2085: 2073: 2061: 2041: 2029: 2017: 2009: 1997: 1973: 1966: 1954: 1950: 1917: 1905: 1880: 1868: 1843: 1831: 1810: 1780: 1748: 1740: 1728: 1698: 1667: 1655: 1633: 1621: 1609: 1581: 1568: 1528: 1520: 1493: 1472: 1445: 1433: 1429: 1405: 1393: 152: 144: 642: 1766: 2525: 1793: 595: 518: 20: 1507:(1931), "Risoluzione del problema generale di Dirichlet per le funzioni biarmoniche", 2728: 2627: 2477: 2339: 2227: 2173: 2135: 2097: 1893: 1701:(October 1943), "Analytic and meromorphic continuation by means of Green's formula", 1484: 790: 47: 2064:(1983), "Sul fenomeno di Hartogs per gli operatori lineari alle derivate parziali", 1992: 1576:". This book consist of lecture notes from a course held by Francesco Severi at the 1488:. A historical paper correcting some inexact historical statements in the theory of 1672: 1545: 82: 1942: 2519: 1683:, being different from other ones of the same period due to the extensive use of 1373: 1011:; it only remains to show (following the above comments) that it coincides with 2714: 468:{\displaystyle \Delta ^{2}=\{z\in \mathbb {C} ^{2};|z_{1}|<1,|z_{2}|<1\}} 2718: 2708: 2696: 2178:"Über einen Hartogs'schen Satz in der Theorie der analytischen Funktionen von 1751:(March 1, 1952), "Partial Differential Equations and Analytic Continuations", 2410: 1375:
Introduction to the Theory of Analytic Functions of Several Complex Variables
97:. This property of holomorphic functions of several variables is also called 1651: 1304:
in a nonempty open set. To see the nonemptiness, connect an arbitrary point
1802: 1775: 1596:
Struppa, Daniele C. (1988), "The first eighty years of Hartogs' theorem",
2359: 2258:, the cumulative review of several papers by E. Trost). Available at the 1927:(1936), "On certain analytic continuations and analytic homeomorphisms", 19:"Hartogs' lemma" redirects here. For the lemma on infinite ordinals, see 2704: 1378:, Translations of Mathematical Monographs, vol. 8, Providence, RI: 2611: 2461: 2323: 2203: 2119: 1822:[About an example of Fichera concerning Hartogs's phenomenon], 1724: 1601: 1468: 701:, which lead to the notion of this Hartogs's extension theorem and the 1820:"A proposito di un esempio di Fichera relativo al fenomeno di Hartogs" 1140:), and as the reader shall soon see, the key tool in the proof is the 991:
and identically equal to one on the complement of some compact subset
1647: 1221:
for the correct attribution of many important theorems in this field.
2651: 2501: 2259: 2184:[On a theorem of Hartogs in the theory of analytic functions of 2159: 2091:
Hartogs phenomenon for certain linear partial differential operators
1716: 2344: 2053:
is solved for general data. A translation of the title reads as:-"
1563:(in Italian), Padova: CEDAM – Casa Editrice Dott. Antonio Milani, 1550:
Solution of the general Dirichlet problem for biharmonic functions
1421: 1094:
but cannot be continued as a holomorphic function on the whole of
942:
The holomorphicity of this function is identical to the condition
1332:
may have many connected components, but the component containing
69:
complex variables. A first version of this theorem was proved by
2444:"Sopra una dimostrazione di R. Fueter per un teorema di Hartogs" 1753: 16:
Singularities of holomorphic functions extend infinitely outward
1861:
Rendiconti della Accademia Nazionale delle Scienze Detta dei XL
1824:
Rendiconti della Accademia Nazionale delle Scienze Detta dei XL
1898:
Rendiconti del Seminario Matematico della UniversitĂ  di Padova
1679:
edition). One of the first modern monographs on the theory of
1580:(which at present bears his name), and includes appendices of 1418:
Topics in the theory of functions of several complex variables
987:
to be a smooth function which is identically equal to zero on
151:). Yet another very simple proof of this result was given by 1976:(1961), "A new proof and an extension of Hartog's theorem", 195:
For example, in two variables, consider the interior domain
2446:[On a proof by R. Fueter of a theorem of Hartogs], 1532:. This is the first paper where a general solution to the 1213:) seem to have been overlooked by many specialists of the 911:
open set, unique continuation (based on connectedness of
817:, there exists a smooth and compactly supported function 2356:
An Introduction to Complex Analysis in Several Variables
847:
is required for the validity of this Poincaré lemma; if
793:, unique continuation of holomorphic functions, and the 1158:, p. 153), which refers the reader to the book of 1122:
and its description in various historical surveys by
789:
Ehrenpreis' proof is based on the existence of smooth
171:: later he extended the theorem to a certain class of 671: 645: 618: 598: 568: 541: 521: 481: 369: 204: 42:
of several variables. Informally, it states that the
1073:. To see this, it suffices to consider the function 143:
with compact support. The latter approach is due to
1209:
Fichera's proof as well as his epoch making paper (
899:). Furthermore, given any holomorphic function on 687: 657: 631: 604: 584: 554: 527: 499: 467: 352: 2581:. An English translation of the title reads as:-" 2089:. An English translation of the title reads as:-" 887:; such an expression is meaningful provided that 777:can be extended to a unique holomorphic function 46:of the singularities of such functions cannot be 1608:– Dipartimento di Matematica, pp. 127–209, 1215:theory of functions of several complex variables 167:of several variables and the related concept of 2051:analytic functions of several complex variables 1420:(unabridged and corrected ed.), New York: 1322:via a line. The intersection of the line with 2692:"failure of Hartogs' theorem in one dimension" 1979:Bulletin of the American Mathematical Society 99: 8: 462: 383: 347: 218: 1492:, particularly concerning contributions of 1490:holomorphic functions of several variables 1155: 148: 2409: 2045:. An epoch-making paper in the theory of 1991: 1792: 1774: 1272: 1260: 1114: 1112: 676: 670: 644: 623: 617: 597: 573: 567: 546: 540: 520: 480: 451: 445: 436: 422: 416: 407: 398: 394: 393: 374: 368: 342: 336: 327: 304: 287: 281: 272: 263: 247: 234: 209: 203: 135:. Today, usual proofs rely on either the 1548:. A translation of the title reads as:-" 592:Namely, there is a holomorphic function 1235: 1231: 1210: 1197: 1193: 1189: 1137: 1131: 1119: 1108: 512: 500:{\displaystyle 0<\varepsilon <1.} 176: 156: 2596:[About a theorem of Hartogs], 1248: 1176: 1136:As it is pointed out in the title of ( 1127: 1123: 133:functions of several complex variables 2594:"A proposito d'un teorema di Hartogs" 1578:Istituto Nazionale di Alta Matematica 1218: 1172: 139:or the solution of the inhomogeneous 7: 1863:, serie 5 (in Italian and English), 1826:, serie 5 (in Italian and English), 1159: 854:then it is generally impossible for 137:Bochner–Martinelli–Koppelman formula 2104:[On a theorem of Hartogs], 1896:[On a theorem of Hartogs], 891:is identically equal to zero where 2521:Lehrbuch der Funktionentheorie. II 2049:, where the Dirichlet problem for 1572:. A translation of the title is:-" 1087:, which is clearly holomorphic in 620: 570: 371: 260: 185:Ehrenpreis's fundamental principle 115:satisfying Hartogs-type theorems. 85:literature, it is also called the 73:, and as such it is known also as 14: 2599:Commentarii Mathematici Helvetici 2449:Commentarii Mathematici Helvetici 2191:Commentarii Mathematici Helvetici 2107:Commentarii Mathematici Helvetici 1606:UniversitĂ  degli Studi di Bologna 1003:of compact support. This defines 688:{\displaystyle H_{\varepsilon }.} 562:can be analytically continued to 2398:Proceedings of the Japan Academy 1062:Counterexamples in dimension one 555:{\displaystyle H_{\varepsilon }} 363:in the two-dimensional polydisk 159:), by using his solution of the 123:The original proof was given by 2102:"Über einen Hartogs'schen Satz" 1993:10.1090/S0002-9904-1961-10661-7 1598:Seminari di Geometria 1987–1988 1066:The theorem does not hold when 147:who initiated it in the paper ( 1456:The Mathematical Intelligencer 965:, the differential (0,1)-form 452: 437: 423: 408: 343: 328: 288: 273: 253: 227: 181:partial differential operators 173:partial differential operators 89:, acknowledging later work by 26:In the theory of functions of 1: 1943:10.1215/S0012-7094-36-00203-X 1894:"Su di un teorema di Hartogs" 1380:American Mathematical Society 1336:gives a continuous path from 1251:) and the references therein. 1046:. Thus, on this open subset, 1007:as a holomorphic function on 2740:Theorems in complex analysis 921:) shows that it is equal to 697:Such a phenomenon is called 585:{\displaystyle \Delta ^{2}.} 2680:Encyclopedia of Mathematics 1284:Any connected component of 858:to be compactly supported. 632:{\displaystyle \Delta ^{2}} 515:: Any holomorphic function 32:Hartogs's extension theorem 2756: 1855:Bratti, Giuliano (1986b), 1818:Bratti, Giuliano (1986a), 1118:See the original paper of 961:. For any smooth function 709:Formal statement and proof 190: 18: 2735:Several complex variables 2715:Proof of Hartogs' theorem 2560:, series 6 (in Italian), 2024:, series 8 (in Italian), 1930:Duke Mathematical Journal 1892:Bratti, Giuliano (1988), 1681:several complex variables 1511:, series 6 (in Italian), 840:. The crucial assumption 129:Cauchy's integral formula 34:is a statement about the 28:several complex variables 2188:complex variables], 1130:, pp. 111–115) and 895:is undefined (namely on 141:Cauchy–Riemann equations 2673:Chirka, E. M. (2001) , 1675:review of the original 1586:Giovanni Battista Rizza 1538:pluriharmonic functions 1142:Cauchy integral formula 756:is a compact subset of 2411:10.3792/pja/1195519488 689: 659: 633: 606: 586: 556: 529: 501: 469: 354: 2528:, pp. VIII+307, 2311:Mathematische Annalen 1776:10.1073/pnas.38.3.227 1704:Annals of Mathematics 1692:Scientific references 1685:generalized functions 1540:is given for general 1363:Historical references 1032:is holomorphic since 875:for smooth functions 739:is an open subset of 690: 660: 634: 607: 587: 557: 530: 502: 470: 355: 165:holomorphic functions 113:convolution equations 56:removable singularity 40:holomorphic functions 2182:komplexen Variablen" 1654:, pp. XII+353, 1414:Osgood, William Fogg 720:holomorphic function 703:domain of holomorphy 699:Hartogs's phenomenon 669: 643: 616: 596: 566: 539: 519: 479: 367: 202: 191:Hartogs's phenomenon 109:partial differential 100:Hartogs's phenomenon 87:Osgood–Brown theorem 52:isolated singularity 2650:. Available at the 2500:. Available at the 2343:. Available at the 2158:. Available at the 1767:1952PNAS...38..227B 1544:on a real analytic 1424:, pp. IV+120, 1382:, pp. vi+374, 1126:, pp. 56–59), 773:is connected, then 658:{\displaystyle F=f} 95:William Fogg Osgood 91:Arthur Barton Brown 79:Hartogs's principle 2657:2012-11-10 at the 2612:10.1007/bf02565650 2507:2012-11-10 at the 2462:10.1007/bf02565649 2324:10.1007/BF01448415 2265:2012-11-10 at the 2204:10.1007/bf02565627 2165:2012-11-10 at the 2120:10.1007/bf01620640 1542:real analytic data 1469:10.1007/BF03024609 1015:on some open set. 983:-closed. Choosing 903:which is equal to 685: 655: 629: 602: 582: 552: 525: 497: 465: 350: 2675:"Hartogs theorem" 2590:Severi, Francesco 2552:Severi, Francesco 2345:DigiZeitschriften 1707:, Second Series, 1630:Vladimirov, V. S. 1557:Severi, Francesco 1534:Dirichlet problem 1505:Severi, Francesco 1318:to some point of 1092: \ {0}, 605:{\displaystyle F} 528:{\displaystyle f} 314: 311: 307: 303: 300: 161:Dirichlet problem 125:Friedrich Hartogs 71:Friedrich Hartogs 60:analytic function 2747: 2705:Hartogs' theorem 2701: 2687: 2649: 2648: 2647: 2638:, archived from 2580: 2546: 2499: 2498: 2497: 2488:, archived from 2440:Martinelli, Enzo 2430: 2413: 2388: 2342: 2296: 2249: 2248: 2247: 2238:, archived from 2187: 2181: 2157: 2156: 2155: 2146:, archived from 2088: 2062:Fichera, Gaetano 2044: 2018:Fichera, Gaetano 2012: 1995: 1974:Ehrenpreis, Leon 1969: 1925:Brown, Arthur B. 1920: 1888: 1883:, archived from 1851: 1846:, archived from 1813: 1796: 1778: 1749:Bochner, Salomon 1743: 1699:Bochner, Salomon 1670: 1652:The M.I.T. Press 1624: 1571: 1531: 1498:Francesco Severi 1487: 1448: 1408: 1351: 1349: 1339: 1335: 1331: 1321: 1317: 1307: 1303: 1293: 1282: 1276: 1270: 1264: 1263:, Theorem 2.3.2. 1258: 1252: 1245: 1239: 1228: 1222: 1207: 1201: 1186: 1180: 1169: 1163: 1156:Vladimirov (1966 1154:See for example 1152: 1146: 1116: 1099: 1093: 1086: 1072: 1057: 1053: 1049: 1045: 1035: 1031: 1027: 1014: 1010: 1006: 1002: 998: 994: 990: 986: 982: 981: 976: 972: 964: 960: 956: 946: 938: 924: 920: 906: 902: 898: 894: 890: 886: 882: 878: 874: 864: 857: 853: 846: 839: 831: 826: 820: 816: 811: 806: 800: 784: 780: 776: 772: 759: 755: 751: 744: 738: 734: 717: 694: 692: 691: 686: 681: 680: 664: 662: 661: 656: 638: 636: 635: 630: 628: 627: 611: 609: 608: 603: 591: 589: 588: 583: 578: 577: 561: 559: 558: 553: 551: 550: 534: 532: 531: 526: 506: 504: 503: 498: 474: 472: 471: 466: 455: 450: 449: 440: 426: 421: 420: 411: 403: 402: 397: 379: 378: 359: 357: 356: 351: 346: 341: 340: 331: 312: 309: 308: 305: 301: 298: 291: 286: 285: 276: 268: 267: 252: 251: 239: 238: 214: 213: 68: 2755: 2754: 2750: 2749: 2748: 2746: 2745: 2744: 2725: 2724: 2690: 2672: 2669: 2664: 2659:Wayback Machine 2645: 2643: 2588: 2550: 2536: 2514: 2509:Wayback Machine 2495: 2493: 2438: 2431:, available at 2392: 2370: 2352:Hörmander, Lars 2350: 2300: 2272: 2267:Wayback Machine 2245: 2243: 2185: 2179: 2172: 2167:Wayback Machine 2153: 2151: 2096: 2060: 2016: 1972: 1923: 1891: 1854: 1817: 1747: 1717:10.2307/1969103 1697: 1694: 1628: 1595: 1590:Mario Benedicty 1582:Enzo Martinelli 1555: 1503: 1494:Gaetano Fichera 1452: 1412: 1390: 1368: 1365: 1359: 1354: 1341: 1337: 1333: 1323: 1319: 1309: 1305: 1295: 1294:must intersect 1285: 1283: 1279: 1271: 1267: 1259: 1255: 1247:See his paper ( 1246: 1242: 1229: 1225: 1208: 1204: 1187: 1183: 1170: 1166: 1153: 1149: 1117: 1110: 1106: 1095: 1088: 1074: 1067: 1064: 1055: 1051: 1047: 1037: 1033: 1029: 1019: 1012: 1008: 1004: 1000: 996: 992: 988: 984: 979: 978: 970: 966: 962: 954: 944: 943: 930: 922: 912: 904: 900: 896: 892: 888: 884: 880: 876: 866: 862: 861:The ansatz for 855: 848: 841: 829: 828: 822: 818: 809: 808: 802: 798: 782: 778: 774: 764: 757: 753: 746: 740: 736: 726: 715: 711: 672: 667: 666: 641: 640: 619: 614: 613: 594: 593: 569: 564: 563: 542: 537: 536: 517: 516: 477: 476: 441: 412: 392: 370: 365: 364: 332: 277: 259: 243: 230: 205: 200: 199: 193: 153:Gaetano Fichera 149:Ehrenpreis 1961 145:Leon Ehrenpreis 127:in 1906, using 121: 119:Historical note 75:Hartogs's lemma 63: 24: 17: 12: 11: 5: 2753: 2751: 2743: 2742: 2737: 2727: 2726: 2723: 2722: 2712: 2702: 2688: 2668: 2667:External links 2665: 2663: 2662: 2606:(1): 350–352, 2602:(in Italian), 2586: 2548: 2534: 2512: 2456:(1): 340–349, 2452:(in Italian), 2436: 2433:Project Euclid 2390: 2368: 2348: 2302:Hartogs, Fritz 2298: 2274:Hartogs, Fritz 2270: 2198:(1): 394–400, 2174:Fueter, Rudolf 2170: 2098:Fueter, Rudolf 2094: 2068:(in Italian), 2058: 2028:(6): 706–715, 2014: 1986:(5): 507–509, 1970: 1921: 1900:(in Italian), 1889: 1867:(1): 255–259, 1852: 1830:(1): 241–246, 1815: 1761:(3): 227–230, 1745: 1711:(4): 652–673, 1693: 1690: 1689: 1688: 1634:Ehrenpreis, L. 1626: 1593: 1553: 1501: 1450: 1410: 1388: 1364: 1361: 1360: 1358: 1355: 1353: 1352: 1277: 1273:Hörmander 1990 1265: 1261:Hörmander 1990 1253: 1240: 1232:Bratti (1986a) 1223: 1202: 1194:Bratti (1986a) 1190:Fichera (1983) 1181: 1164: 1147: 1120:Hartogs (1906) 1107: 1105: 1102: 1063: 1060: 795:PoincarĂ© lemma 791:bump functions 787: 786: 710: 707: 684: 679: 675: 654: 651: 648: 626: 622: 601: 581: 576: 572: 549: 545: 524: 513:Hartogs (1906) 496: 493: 490: 487: 484: 464: 461: 458: 454: 448: 444: 439: 435: 432: 429: 425: 419: 415: 410: 406: 401: 396: 391: 388: 385: 382: 377: 373: 361: 360: 349: 345: 339: 335: 330: 326: 323: 320: 317: 297: 294: 290: 284: 280: 275: 271: 266: 262: 258: 255: 250: 246: 242: 237: 233: 229: 226: 223: 220: 217: 212: 208: 192: 189: 175:in the paper ( 155:in the paper ( 120: 117: 21:Hartogs number 15: 13: 10: 9: 6: 4: 3: 2: 2752: 2741: 2738: 2736: 2733: 2732: 2730: 2720: 2716: 2713: 2710: 2706: 2703: 2699: 2698: 2693: 2689: 2686: 2682: 2681: 2676: 2671: 2670: 2666: 2660: 2656: 2653: 2642:on 2011-10-02 2641: 2637: 2633: 2629: 2625: 2621: 2617: 2613: 2609: 2605: 2601: 2600: 2595: 2592:(1942–1943), 2591: 2587: 2584: 2579: 2575: 2571: 2567: 2563: 2559: 2558: 2553: 2549: 2545: 2541: 2537: 2535:9780828401821 2531: 2527: 2526:B. G. Teubner 2523: 2522: 2517: 2516:Osgood, W. F. 2513: 2510: 2506: 2503: 2492:on 2011-10-02 2491: 2487: 2483: 2479: 2475: 2471: 2467: 2463: 2459: 2455: 2451: 2450: 2445: 2442:(1942–1943), 2441: 2437: 2434: 2429: 2425: 2421: 2417: 2412: 2407: 2403: 2399: 2395: 2394:Kaneko, Akira 2391: 2387: 2383: 2379: 2375: 2371: 2369:0-444-88446-7 2365: 2361: 2360:North-Holland 2357: 2353: 2349: 2346: 2341: 2337: 2333: 2329: 2325: 2321: 2317: 2314:(in German), 2313: 2312: 2307: 2303: 2299: 2295: 2291: 2287: 2284:(in German), 2283: 2279: 2275: 2271: 2268: 2264: 2261: 2257: 2253: 2242:on 2011-10-02 2241: 2237: 2233: 2229: 2225: 2221: 2217: 2213: 2209: 2205: 2201: 2197: 2194:(in German), 2193: 2192: 2183: 2176:(1941–1942), 2175: 2171: 2168: 2164: 2161: 2150:on 2011-10-02 2149: 2145: 2141: 2137: 2133: 2129: 2125: 2121: 2117: 2113: 2110:(in German), 2109: 2108: 2103: 2100:(1939–1940), 2099: 2095: 2092: 2087: 2083: 2079: 2075: 2071: 2067: 2063: 2059: 2056: 2052: 2048: 2043: 2039: 2035: 2031: 2027: 2023: 2019: 2015: 2011: 2007: 2003: 1999: 1994: 1989: 1985: 1981: 1980: 1975: 1971: 1968: 1964: 1960: 1956: 1952: 1948: 1944: 1940: 1936: 1932: 1931: 1926: 1922: 1919: 1915: 1911: 1907: 1903: 1899: 1895: 1890: 1887:on 2011-07-26 1886: 1882: 1878: 1874: 1870: 1866: 1862: 1858: 1853: 1850:on 2011-07-26 1849: 1845: 1841: 1837: 1833: 1829: 1825: 1821: 1816: 1812: 1808: 1804: 1800: 1795: 1790: 1786: 1782: 1777: 1772: 1768: 1764: 1760: 1756: 1755: 1750: 1746: 1742: 1738: 1734: 1730: 1726: 1722: 1718: 1714: 1710: 1706: 1705: 1700: 1696: 1695: 1691: 1686: 1682: 1678: 1674: 1669: 1665: 1661: 1657: 1653: 1649: 1645: 1641: 1640: 1635: 1631: 1627: 1623: 1619: 1615: 1611: 1607: 1603: 1599: 1594: 1591: 1587: 1583: 1579: 1575: 1570: 1566: 1562: 1558: 1554: 1551: 1547: 1543: 1539: 1535: 1530: 1526: 1522: 1518: 1514: 1510: 1506: 1502: 1499: 1495: 1491: 1486: 1482: 1478: 1474: 1470: 1466: 1462: 1458: 1457: 1451: 1447: 1443: 1439: 1435: 1431: 1427: 1423: 1419: 1415: 1411: 1407: 1403: 1399: 1395: 1391: 1389:9780821886441 1385: 1381: 1377: 1376: 1371: 1367: 1366: 1362: 1356: 1348: 1345: \  1344: 1330: 1327: \  1326: 1316: 1313: \  1312: 1302: 1299: \  1298: 1292: 1289: \  1288: 1281: 1278: 1275:, p. 30. 1274: 1269: 1266: 1262: 1257: 1254: 1250: 1244: 1241: 1237: 1233: 1227: 1224: 1220: 1216: 1212: 1206: 1203: 1199: 1195: 1191: 1185: 1182: 1178: 1177:Osgood (1929) 1174: 1168: 1165: 1161: 1157: 1151: 1148: 1144: 1143: 1139: 1133: 1132:Struppa (1988 1129: 1125: 1121: 1115: 1113: 1109: 1103: 1101: 1098: 1091: 1085: 1081: 1077: 1070: 1061: 1059: 1044: 1041: \  1040: 1026: 1023: \  1022: 1016: 975: 969: 959: 953: 949: 940: 937: 934: \  933: 928: 919: 916: \  915: 910: 873: 869: 859: 851: 844: 838: 834: 825: 814: 805: 796: 792: 771: 768: \  767: 763: 749: 743: 733: 730: \  729: 725: 721: 713: 712: 708: 706: 704: 700: 695: 682: 677: 673: 652: 649: 646: 624: 599: 579: 574: 547: 543: 522: 514: 511: 507: 494: 491: 488: 485: 482: 459: 456: 446: 442: 433: 430: 427: 417: 413: 404: 399: 389: 386: 380: 375: 337: 333: 324: 321: 318: 315: 295: 292: 282: 278: 269: 264: 256: 248: 244: 240: 235: 231: 224: 221: 215: 210: 206: 198: 197: 196: 188: 186: 182: 178: 174: 170: 166: 162: 158: 154: 150: 146: 142: 138: 134: 130: 126: 118: 116: 114: 110: 106: 102: 101: 96: 92: 88: 84: 81:: in earlier 80: 76: 72: 66: 61: 57: 53: 49: 45: 41: 37: 36:singularities 33: 29: 22: 2695: 2678: 2652:SEALS Portal 2644:, retrieved 2640:the original 2603: 2597: 2582: 2561: 2555: 2520: 2502:SEALS Portal 2494:, retrieved 2490:the original 2453: 2447: 2404:(1): 17–19, 2401: 2397: 2355: 2315: 2309: 2285: 2281: 2260:SEALS Portal 2244:, retrieved 2240:the original 2195: 2189: 2160:SEALS Portal 2152:, retrieved 2148:the original 2114:(1): 75–80, 2111: 2105: 2090: 2069: 2065: 2054: 2047:CR-functions 2025: 2021: 1983: 1977: 1934: 1928: 1901: 1897: 1885:the original 1864: 1860: 1848:the original 1827: 1823: 1758: 1752: 1708: 1702: 1673:Zentralblatt 1638: 1597: 1573: 1560: 1549: 1546:hypersurface 1512: 1508: 1460: 1454: 1417: 1374: 1346: 1342: 1328: 1324: 1314: 1310: 1300: 1296: 1290: 1286: 1280: 1268: 1256: 1243: 1236:Bratti 1986b 1226: 1219:Range (2002) 1211:Fichera 1957 1205: 1198:Bratti 1986b 1184: 1173:Brown (1936) 1167: 1150: 1138:Hartogs 1906 1135: 1128:Severi (1958 1124:Osgood (1966 1096: 1089: 1083: 1079: 1075: 1068: 1065: 1042: 1038: 1024: 1020: 1017: 973: 967: 957: 951: 947: 941: 935: 931: 926: 917: 913: 908: 871: 867: 860: 849: 842: 836: 832: 823: 812: 803: 788: 769: 765: 747: 741: 731: 727: 698: 696: 509: 508: 362: 194: 177:Fichera 1983 157:Fichera 1957 122: 98: 86: 78: 74: 64: 54:is always a 31: 25: 2564:: 487–490, 2288:: 223–242, 2072:: 199–211, 1515:: 795–804, 1463:(2): 4–12, 1370:Fuks, B. A. 1249:Kaneko 1973 1018:On the set 169:CR-function 2729:Categories 2719:PlanetMath 2709:PlanetMath 2697:PlanetMath 2646:2011-06-25 2636:0028.15301 2578:0004.40702 2570:58.0352.05 2544:55.0171.02 2496:2011-01-16 2486:0028.15201 2428:0265.35008 2386:0685.32001 2332:37.0444.01 2294:37.0443.01 2256:0060.24505 2250:(see also 2246:2011-01-16 2236:0027.05703 2212:68.0175.02 2154:2011-01-16 2144:0022.05802 2128:65.0363.03 2086:0603.35013 2042:0106.05202 2010:0099.07801 1967:0013.40701 1951:62.0396.02 1918:0657.46033 1881:0646.35008 1844:0646.35007 1811:0046.09902 1741:0060.24206 1668:0125.31904 1622:0657.35018 1569:0094.28002 1529:0002.34202 1521:57.0393.01 1446:0138.30901 1430:45.0661.02 1406:0138.30902 1357:References 1160:Fuks (1963 762:complement 639:such that 2685:EMS Press 2628:120514642 2478:119960691 2354:(1990) , 2340:122134517 2304:(1906a), 2228:122750611 2136:120266425 1937:: 20–28, 1904:: 59–70, 1644:Cambridge 1485:120531925 1416:(1966) , 760:. If the 678:ε 621:Δ 571:Δ 548:ε 489:ε 390:∈ 372:Δ 322:ε 319:− 296:ε 261:Δ 257:∈ 211:ε 2655:Archived 2518:(1929), 2505:Archived 2318:: 1–88, 2276:(1906), 2263:Archived 2163:Archived 1803:16589083 1632:(1966), 1559:(1958), 1372:(1963), 868:φ f 735:, where 58:for any 2620:0010730 2470:0010729 2420:0412578 2378:1045639 2220:0007445 2078:0848259 2034:0093597 2002:0131663 1959:1545903 1910:0964020 1873:0879114 1836:0879111 1794:1063536 1785:0050119 1763:Bibcode 1733:0009206 1725:1969103 1677:Russian 1660:0201669 1636:(ed.), 1614:0973699 1602:Bologna 1477:1907191 1438:0201668 1398:0168793 1050:equals 510:Theorem 105:systems 48:compact 44:support 2634:  2626:  2618:  2576:  2568:  2542:  2532:  2484:  2476:  2468:  2426:  2418:  2384:  2376:  2366:  2338:  2330:  2292:  2254:  2234:  2226:  2218:  2210:  2142:  2134:  2126:  2084:  2076:  2040:  2032:  2008:  2000:  1965:  1957:  1949:  1916:  1908:  1879:  1871:  1842:  1834:  1809:  1801:  1791:  1783:  1739:  1731:  1723:  1666:  1658:  1648:London 1620:  1612:  1567:  1527:  1519:  1483:  1475:  1444:  1436:  1428:  1404:  1396:  1386:  1217:: see 1034:φ 985:φ 974:φ 963:φ 958:φ 889:φ 877:φ 856:η 837:ω 833:η 819:η 813:ω 799:ω 752:) and 475:where 313:  310:  302:  299:  83:Soviet 67:> 1 2624:S2CID 2474:S2CID 2336:S2CID 2224:S2CID 2132:S2CID 1721:JSTOR 1481:S2CID 1422:Dover 1340:into 1104:Notes 827:with 807:with 722:on a 718:be a 2530:ISBN 2364:ISBN 1799:PMID 1754:PNAS 1588:and 1536:for 1496:and 1384:ISBN 1230:See 1192:and 1188:See 1175:and 1171:See 1082:) = 909:some 879:and 714:Let 665:on 492:< 486:< 457:< 428:< 325:< 293:< 163:for 131:for 93:and 77:and 2717:at 2707:at 2632:Zbl 2608:doi 2574:Zbl 2566:JFM 2540:JFM 2482:Zbl 2458:doi 2424:Zbl 2406:doi 2382:Zbl 2328:JFM 2320:doi 2290:JFM 2252:Zbl 2232:Zbl 2208:JFM 2200:doi 2140:Zbl 2124:JFM 2116:doi 2082:Zbl 2070:117 2038:Zbl 2006:Zbl 1988:doi 1963:Zbl 1947:JFM 1939:doi 1914:Zbl 1877:Zbl 1840:Zbl 1807:Zbl 1789:PMC 1771:doi 1737:Zbl 1713:doi 1664:Zbl 1618:Zbl 1565:Zbl 1525:Zbl 1517:JFM 1465:doi 1442:Zbl 1426:JFM 1402:Zbl 1308:of 1071:= 1 995:of 977:is 929:of 927:all 925:on 907:on 883:on 865:is 852:= 1 845:≄ 2 821:on 815:= 0 801:on 781:on 750:≄ 2 724:set 612:on 535:on 111:or 107:of 62:of 38:of 2731:: 2694:. 2683:, 2677:, 2630:, 2622:, 2616:MR 2614:, 2604:15 2585:". 2572:, 2562:15 2538:, 2480:, 2472:, 2466:MR 2464:, 2454:15 2422:, 2416:MR 2414:, 2402:49 2400:, 2380:, 2374:MR 2372:, 2362:, 2334:, 2326:, 2316:62 2308:, 2286:36 2280:, 2230:, 2222:, 2216:MR 2214:, 2206:, 2196:14 2138:, 2130:, 2122:, 2112:12 2093:". 2080:, 2074:MR 2057:". 2036:, 2030:MR 2026:22 2004:, 1998:MR 1996:, 1984:67 1982:, 1961:, 1955:MR 1953:, 1945:, 1933:, 1912:, 1906:MR 1902:79 1875:, 1869:MR 1838:, 1832:MR 1805:, 1797:, 1787:, 1781:MR 1779:, 1769:, 1759:38 1757:, 1735:, 1729:MR 1727:, 1719:, 1709:44 1662:, 1656:MR 1650:: 1642:, 1616:, 1610:MR 1604:: 1600:, 1584:, 1552:". 1523:, 1513:13 1479:, 1473:MR 1471:, 1461:24 1459:, 1440:, 1434:MR 1432:, 1400:, 1394:MR 1392:, 1238:). 1200:). 1145:". 1111:^ 1058:. 1028:, 950:= 939:. 870:− 835:= 705:. 495:1. 306:or 187:. 30:, 2721:. 2711:. 2700:. 2661:. 2610:: 2547:. 2511:. 2460:: 2435:. 2408:: 2389:. 2347:. 2322:: 2297:. 2269:. 2202:: 2186:n 2180:n 2169:. 2118:: 1990:: 1941:: 1935:2 1865:X 1828:X 1814:. 1773:: 1765:: 1744:. 1715:: 1687:. 1671:( 1646:- 1625:. 1592:. 1500:. 1467:: 1449:. 1409:. 1350:. 1347:L 1343:G 1338:p 1334:p 1329:L 1325:C 1320:L 1315:L 1311:C 1306:p 1301:L 1297:G 1291:L 1287:C 1234:( 1196:( 1179:. 1097:C 1090:C 1084:z 1080:z 1078:( 1076:f 1069:n 1056:G 1052:f 1048:F 1043:L 1039:G 1030:v 1025:L 1021:C 1013:f 1009:G 1005:F 1001:v 997:G 993:L 989:K 980:∂ 971:∂ 968:f 955:∂ 952:f 948:v 945:∂ 936:K 932:G 923:f 918:K 914:G 905:f 901:G 897:K 893:f 885:G 881:v 872:v 863:F 850:n 843:n 830:∂ 824:C 810:∂ 804:C 785:. 783:G 779:F 775:f 770:K 766:G 758:G 754:K 748:n 745:( 742:C 737:G 732:K 728:G 716:f 683:. 674:H 653:f 650:= 647:F 625:2 600:F 580:. 575:2 544:H 523:f 483:0 463:} 460:1 453:| 447:2 443:z 438:| 434:, 431:1 424:| 418:1 414:z 409:| 405:; 400:2 395:C 387:z 384:{ 381:= 376:2 348:} 344:| 338:2 334:z 329:| 316:1 289:| 283:1 279:z 274:| 270:: 265:2 254:) 249:2 245:z 241:, 236:1 232:z 228:( 225:= 222:z 219:{ 216:= 207:H 65:n 23:.

Index

Hartogs number
several complex variables
singularities
holomorphic functions
support
compact
isolated singularity
removable singularity
analytic function
Friedrich Hartogs
Soviet
Arthur Barton Brown
William Fogg Osgood
Hartogs's phenomenon
systems
partial differential
convolution equations
Friedrich Hartogs
Cauchy's integral formula
functions of several complex variables
Bochner–Martinelli–Koppelman formula
Cauchy–Riemann equations
Leon Ehrenpreis
Ehrenpreis 1961
Gaetano Fichera
Fichera 1957
Dirichlet problem
holomorphic functions
CR-function
partial differential operators

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

↑