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Hypersequent

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2673: 433: 2381: 141: 2668:{\displaystyle {\frac {\Gamma _{1}\Rightarrow \Delta _{1}\mid \dots \mid \Gamma _{n}\Rightarrow \Delta _{n}\mid \Sigma \Rightarrow A\qquad \Omega _{1}\Rightarrow \Theta _{1}\mid \dots \mid \Omega _{m}\Rightarrow \Theta _{m}\mid \Pi \Rightarrow B}{\Gamma _{1}\Rightarrow \Delta _{1}\mid \dots \mid \Gamma _{n}\Rightarrow \Delta _{n}\mid \Omega _{1}\Rightarrow \Theta _{1}\mid \dots \mid \Omega _{m}\Rightarrow \Theta _{m}\mid \Sigma \Rightarrow B\mid \Pi \Rightarrow A}}} 428:{\displaystyle {\frac {\Gamma _{1}\Rightarrow \Delta _{1}\mid \dots \mid \Gamma _{n}\Rightarrow \Delta _{n}\mid \Sigma \Rightarrow A\qquad \Omega _{1}\Rightarrow \Theta _{1}\mid \dots \mid \Omega _{m}\Rightarrow \Theta _{m}\mid \Pi \Rightarrow B}{\Gamma _{1}\Rightarrow \Delta _{1}\mid \dots \mid \Gamma _{n}\Rightarrow \Delta _{n}\mid \Omega _{1}\Rightarrow \Theta _{1}\mid \dots \mid \Omega _{m}\Rightarrow \Theta _{m}\mid \Sigma \Rightarrow B\mid \Pi \Rightarrow A}}} 641: 451: 1015: 2156: 636:{\displaystyle {\frac {\Gamma _{1}\Rightarrow \Delta _{1}\mid \dots \mid \Gamma _{n}\Rightarrow \Delta _{n}\mid \Box \Sigma ,\Theta \Rightarrow \Box \Pi ,\Omega }{\Gamma _{1}\Rightarrow \Delta _{1}\mid \dots \mid \Gamma _{n}\Rightarrow \Delta _{n}\mid \Box \Sigma \Rightarrow \Box \Pi \mid \Theta \Rightarrow \Omega }}} 752:
The sequents making up a hypersequent consist of pairs of multisets of formulae, and are called the components of the hypersequent. Variants defining hypersequents and sequents in terms of sets or lists instead of multisets are also considered, and depending on the considered logic the sequents can
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Most hypersequent calculi for intermediate logics include the single-succedent versions of the propositional rules given above and a selection of the structural rules. The characteristics of a particular intermediate logic are mostly captured using a number of additional
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of the calculus without the cut rule directly using the semantics of S5. In line with the importance of modal logic S5, a number of alternative calculi have been formulated. Hypersequent calculi have also been proposed for many other modal logics.
121: 1585: 747: 2361: 2265: 2714:. It seems to have been developed independently in, also for treating modal logics, and in the influential, where calculi for modal, intermediate and substructural logics are considered, and the term hypersequent is introduced. 1903:. In a standard hypersequent calculus for this logic the formula interpretation is as above, and the propositional and structural rules are the ones from the previous section. Additionally, the calculus contains the modal rules 1404: 658:. Hypersequents usually have a formula interpretation, i.e., are interpreted by a formula in the object language, nearly always as some kind of disjunction. The precise formula interpretation depends on the considered logic. 905: 853: 757:. The rules for the propositional connectives usually are adaptions of the corresponding standard sequent rules with an additional side hypersequent, also called hypersequent context. E.g., a common set of rules for the 1410: 126:
The sequents making up a hypersequent are called components. The added expressivity of the hypersequent framework is provided by rules manipulating different components, such as the communication rule for the
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are considered in their internal and external variants. The internal weakening and internal contraction rules are the adaptions of the corresponding sequent rules with an added hypersequent context:
1022: 1983: 1277: 1195: 1909: 1877: 1010:{\displaystyle {\frac {{\mathcal {G}}\mid \Gamma ,B\Rightarrow \Delta \qquad {\mathcal {G}}\mid \Gamma \Rightarrow A,\Delta }{{\mathcal {G}}\mid \Gamma ,A\to B\Rightarrow \Delta }}} 2151:{\displaystyle {\frac {{\mathcal {G}}\mid \Box \Gamma ,\Sigma \Rightarrow \Box \Delta ,\Pi }{{\mathcal {G}}\mid \Box \Gamma \Rightarrow \Box \Delta \mid \Sigma \Rightarrow \Pi }}} 1762: 791: 1785: 54: 1518: 680: 2276: 1805: 1716: 1897: 1825: 2862:
Restall, Greg (2007). Dimitracopoulos, Costas; Newelski, Ludomir; Normann, Dag; Steel, John R (eds.). "Proofnets for S5: Sequents and circuits for modal logic".
3089:; Maffezioli, Paolo; Spendier, Lara (2013). Galmiche, Didier; Larchey-Wendling, Dominique (eds.). "Hypersequent and Labelled Calculi for Intermediate Logics". 2198: 1362: 1475:{\displaystyle {\frac {{\mathcal {G}}\mid \Gamma \Rightarrow \Delta \mid \Gamma \Rightarrow \Delta }{{\mathcal {G}}\mid \Gamma \Rightarrow \Delta }}} 861: 803: 2951: 1899:
is interpreted as a disjunction of boxes. The prime example of a modal logic for which hypersequents provide an analytic calculus is the logic
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The external weakening and external contraction rules are the corresponding rules on the level of hypersequent components instead of formulae:
3181: 2968: 2929: 2755: 1688:{\displaystyle \Box (\bigwedge \Gamma _{1}\to \bigvee \Delta _{1})\lor \dots \lor \Box (\bigwedge \Gamma _{n}\to \bigvee \Delta _{n})} 2893: 1879:. Note that the single components are interpreted using the standard formula interpretation for sequents, and the hypersequent bar 1183:{\displaystyle {\frac {{\mathcal {G}}\mid \Gamma \Rightarrow \Delta }{{\mathcal {G}}\mid \Gamma ,\Sigma \Rightarrow \Delta ,\Pi }}} 1099:{\displaystyle {\frac {{\mathcal {G}}\mid \Gamma ,A\Rightarrow B,\Delta }{{\mathcal {G}}\mid \Gamma \Rightarrow A\to B,\Delta }}} 2051:{\displaystyle {\frac {{\mathcal {G}}\mid \Gamma ,A\Rightarrow \Delta }{{\mathcal {G}}\mid \Gamma ,\Box A\Rightarrow \Delta }}} 1487:
of these rules is closely connected to the formula interpretation of the hypersequent structure, nearly always as some form of
2994: 1348:{\displaystyle {\frac {{\mathcal {G}}\mid \Gamma \Rightarrow A,A,\Delta }{{\mathcal {G}}\mid \Gamma \Rightarrow A,\Delta }}} 1266:{\displaystyle {\frac {{\mathcal {G}}\mid \Gamma ,A,A\Rightarrow \Delta }{{\mathcal {G}}\mid \Gamma ,A\Rightarrow \Delta }}} 794: 1971:{\displaystyle {\frac {{\mathcal {G}}\mid \Box \Gamma \Rightarrow A}{{\mathcal {G}}\mid \Box \Gamma \Rightarrow \Box A}}} 2678:
Hypersequent calculi for many other intermediate logics have been introduced, and there are very general results about
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Indrzejczak, Andrzej (2015). "Eliminability of cut in hypersequent calculi for some modal logics of linear frames".
2372: 132: 1830: 2192:. Since the hypersequents in this setting are based on single-succedent sequents, they have the following form: 2181: 33: 2820: 3159: 3120: 40:
for logics that are not captured in the sequent framework. A hypersequent is usually taken to be a finite
3058:; Ferrari, Mauro (2001). "Hypersequent calculi for some intermediate logics with bounded Kripke models". 3229: 1721: 758: 3154:; Galatos, Nikolaos; Terui, Kazushige (2008). "From Axioms to Analytic Rules in Nonclassical Logics". 1512:
proved elusive. In the context of modal logics the standard formula interpretation of a hypersequent
2691: 2375:, sometimes also called Gödel–Dummett logic, contains additionally the so-called communication rule: 2189: 2168: 754: 655: 116:{\displaystyle \Gamma _{1}\Rightarrow \Delta _{1}\mid \cdots \mid \Gamma _{n}\Rightarrow \Delta _{n}} 3164: 1580:{\displaystyle \Gamma _{1}\Rightarrow \Delta _{1}\mid \dots \mid \Gamma _{n}\Rightarrow \Delta _{n}} 764: 742:{\displaystyle \Gamma _{1}\Rightarrow \Delta _{1}\mid \dots \mid \Gamma _{n}\Rightarrow \Delta _{n}} 3027: 2185: 1491:. The precise formula interpretation depends on the considered logic, see below for some examples. 651: 3125: 1767: 3187: 2974: 2844: 2746:(1996). "The method of hypersequents in the proof theory of propositional non-classical logics". 128: 17: 2356:{\displaystyle (\bigwedge \Gamma _{1}\to A_{1})\lor \dots \lor (\bigwedge \Gamma _{n}\to A_{n})} 3177: 2964: 2925: 2889: 2751: 2690:
As for intermediate logics, hypersequents have been used to obtain analytic calculi for many
1790: 1701: 3169: 3151: 3130: 3108: 3086: 3068: 3055: 3035: 3003: 2956: 2917: 2879: 2871: 2836: 2711: 1900: 1509: 442: 29: 1882: 1810: 3060: 2828: 2679: 2368: 1109: 2799:
Pottinger, Garrell (1983). "Uniform, cut-free formulations of T, S4 and S5 (abstract)".
2260:{\displaystyle \Gamma _{1}\Rightarrow A_{1}\mid \dots \mid \Gamma _{n}\Rightarrow A_{n}} 2160: 37: 3111:; Fermüller, Christian G. (2003). "Hypersequent Calculi for Gödel Logics – A Survey". 3223: 2801: 2774: 1399:{\displaystyle {\frac {\mathcal {G}}{{\mathcal {G}}\mid \Gamma \Rightarrow \Delta }}} 2848: 3191: 2695: 2167:
can be shown by a syntactic argument on the structure of derivations or by showing
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Lahav, Ori (2013). "From Frame Properties to Hypersequent Rules in Modal Logics".
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Kurokawa, Hidenori (2014). "Hypersequent Calculi for Modal Logics Extending S4".
2875: 2921: 2743: 1505: 1488: 647: 439: 900:{\displaystyle {\frac {}{{\mathcal {G}}\mid \Gamma ,\bot \Rightarrow \Delta }}} 3206: 3134: 3072: 3040: 3022: 3007: 2840: 2706:
The hypersequent structure seem to have appeared first in under the name of
848:{\displaystyle {\frac {}{{\mathcal {G}}\mid \Gamma ,p\Rightarrow p,\Delta }}} 3023:"Hypersequent rules with restricted contexts for propositional modal logics" 1484: 3173: 2960: 2164: 667: 41: 2884: 671: 45: 2916:. Lecture Notes in Computer Science. Vol. 8417. pp. 51–68. 1108:
Due to the additional structure in the hypersequent setting, the
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The standard formula interpretation for such an hypersequent is
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2008 23rd Annual IEEE Symposium on Logic in Computer Science
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Hypersequents have been used to obtain analytic calculi for
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Formally, a hypersequent is usually taken to be a finite
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have been used successfully to capture a large class of
2821:"A cut-free simple sequent calculus for modal logic S5" 2384: 2371:. E.g., the standard calculus for intermediate logic 2279: 2201: 2065: 1986: 1912: 1885: 1833: 1813: 1793: 1770: 1724: 1704: 1599: 1521: 1413: 1365: 1280: 1198: 1121: 1025: 916: 864: 806: 767: 683: 454: 144: 57: 2667: 2355: 2259: 2150: 2050: 1970: 1891: 1871: 1819: 1799: 1779: 1756: 1710: 1687: 1579: 1474: 1398: 1347: 1265: 1182: 1098: 1009: 899: 847: 785: 741: 635: 427: 115: 2180:Hypersequent calculi based on intuitionistic or 1787:for the result of prefixing every formula in 646:Hypersequent calculi have been used to treat 8: 1872:{\displaystyle \Box A_{1},\dots ,\Box A_{n}} 780: 768: 2710:, to obtain a calculus for the modal logic 2777:(1971). "On some calculi of modal logic". 662:Formal definitions and propositional rules 3163: 3124: 3039: 2883: 2632: 2619: 2600: 2587: 2574: 2561: 2542: 2529: 2505: 2492: 2473: 2460: 2437: 2424: 2405: 2392: 2385: 2383: 2344: 2331: 2303: 2290: 2278: 2251: 2238: 2219: 2206: 2200: 2109: 2108: 2070: 2069: 2066: 2064: 2018: 2017: 1991: 1990: 1987: 1985: 1941: 1940: 1917: 1916: 1913: 1911: 1884: 1863: 1841: 1832: 1812: 1792: 1769: 1748: 1729: 1723: 1703: 1676: 1660: 1629: 1613: 1598: 1571: 1558: 1539: 1526: 1520: 1451: 1450: 1418: 1417: 1414: 1412: 1375: 1374: 1368: 1366: 1364: 1318: 1317: 1285: 1284: 1281: 1279: 1236: 1235: 1203: 1202: 1199: 1197: 1147: 1146: 1126: 1125: 1122: 1120: 1063: 1062: 1030: 1029: 1026: 1024: 974: 973: 947: 946: 921: 920: 917: 915: 870: 869: 865: 863: 812: 811: 807: 805: 766: 733: 720: 701: 688: 682: 594: 581: 562: 549: 507: 494: 475: 462: 455: 453: 392: 379: 360: 347: 334: 321: 302: 289: 265: 252: 233: 220: 197: 184: 165: 152: 145: 143: 107: 94: 75: 62: 56: 2914:New Frontiers in Artificial Intelligence 2163:of a suitably formulated version of the 2748:Logic: From Foundations to Applications 2722: 2952:Symposium on Logic in Computer Science 797:is given by the following four rules: 3146: 3144: 7: 3205:Metcalfe, George; Olivetti, Nicola; 2943: 2941: 2907: 2905: 2794: 2792: 2769: 2767: 2738: 2736: 2734: 2732: 2730: 2728: 2726: 438:or the modal splitting rule for the 2779:Proc. Steklov Inst. Of Mathematics 2653: 2641: 2629: 2616: 2597: 2584: 2571: 2558: 2539: 2526: 2514: 2502: 2489: 2470: 2457: 2446: 2434: 2421: 2402: 2389: 2328: 2287: 2235: 2203: 2190:intuitionistic propositional logic 2142: 2136: 2130: 2121: 2103: 2097: 2088: 2082: 2042: 2027: 2012: 2000: 1953: 1929: 1794: 1774: 1757:{\displaystyle A_{1},\dots ,A_{n}} 1705: 1673: 1657: 1626: 1610: 1568: 1555: 1536: 1523: 1466: 1460: 1445: 1439: 1433: 1427: 1390: 1384: 1339: 1327: 1312: 1294: 1257: 1245: 1230: 1212: 1174: 1168: 1162: 1156: 1141: 1135: 1090: 1072: 1057: 1039: 1001: 983: 968: 956: 942: 930: 891: 885: 879: 839: 821: 771: 730: 717: 698: 685: 627: 621: 615: 606: 591: 578: 559: 546: 540: 534: 525: 519: 504: 491: 472: 459: 413: 401: 389: 376: 357: 344: 331: 318: 299: 286: 274: 262: 249: 230: 217: 206: 194: 181: 162: 149: 104: 91: 72: 59: 14: 24:framework is an extension of the 2455: 945: 215: 2995:Information Processing Letters 2819:Poggiolesi, Francesca (2008). 2656: 2644: 2625: 2593: 2567: 2535: 2517: 2498: 2466: 2449: 2430: 2398: 2350: 2337: 2321: 2309: 2296: 2280: 2244: 2212: 2139: 2124: 2091: 2039: 2009: 1956: 1932: 1682: 1666: 1650: 1635: 1619: 1603: 1564: 1532: 1463: 1442: 1430: 1387: 1330: 1297: 1254: 1227: 1165: 1138: 1081: 1075: 1048: 998: 992: 959: 939: 888: 830: 786:{\displaystyle \{\bot ,\to \}} 777: 726: 694: 624: 609: 587: 555: 528: 500: 468: 416: 404: 385: 353: 327: 295: 277: 258: 226: 209: 190: 158: 100: 68: 1: 3211:Proof theory for fuzzy logics 795:classical propositional logic 2876:10.1017/CBO9780511546464.012 1780:{\displaystyle \Box \Gamma } 2922:10.1007/978-3-319-10061-6_4 3246: 2950:2013 28th Annual ACM–IEEE 2866:. Lecture Notes in Logic. 3041:10.1016/j.tcs.2016.10.004 3008:10.1016/j.ipl.2014.07.002 2841:10.1017/S1755020308080040 2182:single-succedent sequents 3021:Lellmann, Björn (2016). 3135:10.1093/logcom/13.6.835 3073:10.1093/logcom/11.2.283 1800:{\displaystyle \Gamma } 1711:{\displaystyle \Gamma } 34:structural proof theory 2669: 2357: 2261: 2188:, i.e., extensions of 2152: 2052: 1972: 1893: 1873: 1821: 1801: 1781: 1758: 1712: 1689: 1581: 1476: 1400: 1349: 1267: 1184: 1100: 1011: 901: 849: 787: 743: 637: 429: 117: 2864:Logic Colloquium 2005 2670: 2358: 2262: 2153: 2053: 1973: 1894: 1892:{\displaystyle \mid } 1874: 1827:, i.e., the multiset 1822: 1820:{\displaystyle \Box } 1802: 1782: 1759: 1713: 1690: 1582: 1508:, for which analytic 1477: 1401: 1350: 1268: 1185: 1101: 1012: 902: 850: 788: 759:functionally complete 744: 638: 430: 118: 3174:10.1109/LICS.2008.39 3158:. pp. 229–240. 2961:10.1109/LICS.2013.47 2955:. pp. 408–417. 2692:substructural logics 2686:Substructural logics 2382: 2277: 2199: 2063: 1984: 1910: 1883: 1831: 1811: 1791: 1768: 1722: 1702: 1597: 1519: 1411: 1363: 1278: 1196: 1119: 1023: 914: 862: 804: 765: 681: 656:substructural logics 452: 142: 55: 3213:. Springer, Berlin. 3028:Theor. Comput. Sci. 2186:intermediate logics 2176:Intermediate logics 761:set of connectives 652:intermediate logics 133:Gödel–Dummett logic 2665: 2353: 2257: 2148: 2048: 1968: 1889: 1869: 1817: 1797: 1777: 1754: 1708: 1685: 1577: 1472: 1396: 1345: 1263: 1180: 1096: 1007: 897: 845: 783: 739: 633: 425: 129:intermediate logic 113: 18:mathematical logic 3183:978-0-7695-3183-0 3152:Ciabattoni, Agata 3109:Ciabattoni, Agata 3087:Ciabattoni, Agata 3056:Ciabattoni, Agata 2970:978-1-4799-0413-6 2931:978-3-319-10060-9 2757:978-0-19-853862-2 2750:. pp. 1–32. 2682:in such calculi. 2663: 2146: 2046: 1966: 1470: 1394: 1343: 1261: 1178: 1094: 1005: 895: 867: 843: 809: 631: 423: 26:proof-theoretical 3237: 3215: 3214: 3202: 3196: 3195: 3167: 3148: 3139: 3138: 3128: 3107:Baaz, Matthias; 3104: 3098: 3097: 3083: 3077: 3076: 3052: 3046: 3045: 3043: 3018: 3012: 3011: 2989: 2983: 2982: 2945: 2936: 2935: 2909: 2900: 2899: 2887: 2859: 2853: 2852: 2825: 2816: 2810: 2809: 2796: 2787: 2786: 2771: 2762: 2761: 2740: 2674: 2672: 2671: 2666: 2664: 2662: 2637: 2636: 2624: 2623: 2605: 2604: 2592: 2591: 2579: 2578: 2566: 2565: 2547: 2546: 2534: 2533: 2523: 2510: 2509: 2497: 2496: 2478: 2477: 2465: 2464: 2442: 2441: 2429: 2428: 2410: 2409: 2397: 2396: 2386: 2369:structural rules 2362: 2360: 2359: 2354: 2349: 2348: 2336: 2335: 2308: 2307: 2295: 2294: 2266: 2264: 2263: 2258: 2256: 2255: 2243: 2242: 2224: 2223: 2211: 2210: 2157: 2155: 2154: 2149: 2147: 2145: 2114: 2113: 2106: 2075: 2074: 2067: 2057: 2055: 2054: 2049: 2047: 2045: 2023: 2022: 2015: 1996: 1995: 1988: 1977: 1975: 1974: 1969: 1967: 1965: 1946: 1945: 1938: 1922: 1921: 1914: 1898: 1896: 1895: 1890: 1878: 1876: 1875: 1870: 1868: 1867: 1846: 1845: 1826: 1824: 1823: 1818: 1806: 1804: 1803: 1798: 1786: 1784: 1783: 1778: 1763: 1761: 1760: 1755: 1753: 1752: 1734: 1733: 1718:is the multiset 1717: 1715: 1714: 1709: 1694: 1692: 1691: 1686: 1681: 1680: 1665: 1664: 1634: 1633: 1618: 1617: 1586: 1584: 1583: 1578: 1576: 1575: 1563: 1562: 1544: 1543: 1531: 1530: 1481: 1479: 1478: 1473: 1471: 1469: 1456: 1455: 1448: 1423: 1422: 1415: 1405: 1403: 1402: 1397: 1395: 1393: 1380: 1379: 1372: 1367: 1354: 1352: 1351: 1346: 1344: 1342: 1323: 1322: 1315: 1290: 1289: 1282: 1272: 1270: 1269: 1264: 1262: 1260: 1241: 1240: 1233: 1208: 1207: 1200: 1189: 1187: 1186: 1181: 1179: 1177: 1152: 1151: 1144: 1131: 1130: 1123: 1110:structural rules 1105: 1103: 1102: 1097: 1095: 1093: 1068: 1067: 1060: 1035: 1034: 1027: 1016: 1014: 1013: 1008: 1006: 1004: 979: 978: 971: 952: 951: 926: 925: 918: 906: 904: 903: 898: 896: 894: 875: 874: 866: 854: 852: 851: 846: 844: 842: 817: 816: 808: 792: 790: 789: 784: 753:be classical or 748: 746: 745: 740: 738: 737: 725: 724: 706: 705: 693: 692: 642: 640: 639: 634: 632: 630: 599: 598: 586: 585: 567: 566: 554: 553: 543: 512: 511: 499: 498: 480: 479: 467: 466: 456: 434: 432: 431: 426: 424: 422: 397: 396: 384: 383: 365: 364: 352: 351: 339: 338: 326: 325: 307: 306: 294: 293: 283: 270: 269: 257: 256: 238: 237: 225: 224: 202: 201: 189: 188: 170: 169: 157: 156: 146: 122: 120: 119: 114: 112: 111: 99: 98: 80: 79: 67: 66: 38:analytic calculi 3245: 3244: 3240: 3239: 3238: 3236: 3235: 3234: 3220: 3219: 3218: 3204: 3203: 3199: 3184: 3165:10.1.1.405.8176 3150: 3149: 3142: 3106: 3105: 3101: 3085: 3084: 3080: 3061:J. Log. Comput. 3054: 3053: 3049: 3020: 3019: 3015: 2991: 2990: 2986: 2971: 2947: 2946: 2939: 2932: 2911: 2910: 2903: 2896: 2861: 2860: 2856: 2829:Rev. Symb. Log. 2823: 2818: 2817: 2813: 2798: 2797: 2790: 2773: 2772: 2765: 2758: 2742: 2741: 2724: 2720: 2704: 2688: 2680:cut elimination 2628: 2615: 2596: 2583: 2570: 2557: 2538: 2525: 2524: 2501: 2488: 2469: 2456: 2433: 2420: 2401: 2388: 2387: 2380: 2379: 2340: 2327: 2299: 2286: 2275: 2274: 2247: 2234: 2215: 2202: 2197: 2196: 2178: 2107: 2068: 2061: 2060: 2016: 1989: 1982: 1981: 1939: 1915: 1908: 1907: 1881: 1880: 1859: 1837: 1829: 1828: 1809: 1808: 1789: 1788: 1766: 1765: 1744: 1725: 1720: 1719: 1700: 1699: 1672: 1656: 1625: 1609: 1595: 1594: 1590:is the formula 1567: 1554: 1535: 1522: 1517: 1516: 1510:sequent calculi 1502: 1497: 1449: 1416: 1409: 1408: 1373: 1361: 1360: 1316: 1283: 1276: 1275: 1234: 1201: 1194: 1193: 1145: 1124: 1117: 1116: 1061: 1028: 1021: 1020: 972: 919: 912: 911: 868: 860: 859: 810: 802: 801: 763: 762: 729: 716: 697: 684: 679: 678: 664: 590: 577: 558: 545: 544: 503: 490: 471: 458: 457: 450: 449: 388: 375: 356: 343: 330: 317: 298: 285: 284: 261: 248: 229: 216: 193: 180: 161: 148: 147: 140: 139: 103: 90: 71: 58: 53: 52: 30:sequent calculi 12: 11: 5: 3243: 3241: 3233: 3232: 3222: 3221: 3217: 3216: 3197: 3182: 3140: 3119:(6): 835–861. 3113:J. Log. Comput 3099: 3078: 3067:(2): 283–294. 3047: 3013: 2984: 2969: 2937: 2930: 2901: 2894: 2854: 2811: 2788: 2775:Mints, Grigori 2763: 2756: 2721: 2719: 2716: 2703: 2700: 2687: 2684: 2676: 2675: 2661: 2658: 2655: 2652: 2649: 2646: 2643: 2640: 2635: 2631: 2627: 2622: 2618: 2614: 2611: 2608: 2603: 2599: 2595: 2590: 2586: 2582: 2577: 2573: 2569: 2564: 2560: 2556: 2553: 2550: 2545: 2541: 2537: 2532: 2528: 2522: 2519: 2516: 2513: 2508: 2504: 2500: 2495: 2491: 2487: 2484: 2481: 2476: 2472: 2468: 2463: 2459: 2454: 2451: 2448: 2445: 2440: 2436: 2432: 2427: 2423: 2419: 2416: 2413: 2408: 2404: 2400: 2395: 2391: 2364: 2363: 2352: 2347: 2343: 2339: 2334: 2330: 2326: 2323: 2320: 2317: 2314: 2311: 2306: 2302: 2298: 2293: 2289: 2285: 2282: 2268: 2267: 2254: 2250: 2246: 2241: 2237: 2233: 2230: 2227: 2222: 2218: 2214: 2209: 2205: 2177: 2174: 2144: 2141: 2138: 2135: 2132: 2129: 2126: 2123: 2120: 2117: 2112: 2105: 2102: 2099: 2096: 2093: 2090: 2087: 2084: 2081: 2078: 2073: 2044: 2041: 2038: 2035: 2032: 2029: 2026: 2021: 2014: 2011: 2008: 2005: 2002: 1999: 1994: 1979: 1978: 1964: 1961: 1958: 1955: 1952: 1949: 1944: 1937: 1934: 1931: 1928: 1925: 1920: 1888: 1866: 1862: 1858: 1855: 1852: 1849: 1844: 1840: 1836: 1816: 1796: 1776: 1773: 1751: 1747: 1743: 1740: 1737: 1732: 1728: 1707: 1696: 1695: 1684: 1679: 1675: 1671: 1668: 1663: 1659: 1655: 1652: 1649: 1646: 1643: 1640: 1637: 1632: 1628: 1624: 1621: 1616: 1612: 1608: 1605: 1602: 1588: 1587: 1574: 1570: 1566: 1561: 1557: 1553: 1550: 1547: 1542: 1538: 1534: 1529: 1525: 1501: 1498: 1496: 1493: 1468: 1465: 1462: 1459: 1454: 1447: 1444: 1441: 1438: 1435: 1432: 1429: 1426: 1421: 1392: 1389: 1386: 1383: 1378: 1371: 1341: 1338: 1335: 1332: 1329: 1326: 1321: 1314: 1311: 1308: 1305: 1302: 1299: 1296: 1293: 1288: 1259: 1256: 1253: 1250: 1247: 1244: 1239: 1232: 1229: 1226: 1223: 1220: 1217: 1214: 1211: 1206: 1191: 1190: 1176: 1173: 1170: 1167: 1164: 1161: 1158: 1155: 1150: 1143: 1140: 1137: 1134: 1129: 1092: 1089: 1086: 1083: 1080: 1077: 1074: 1071: 1066: 1059: 1056: 1053: 1050: 1047: 1044: 1041: 1038: 1033: 1018: 1017: 1003: 1000: 997: 994: 991: 988: 985: 982: 977: 970: 967: 964: 961: 958: 955: 950: 944: 941: 938: 935: 932: 929: 924: 908: 907: 893: 890: 887: 884: 881: 878: 873: 856: 855: 841: 838: 835: 832: 829: 826: 823: 820: 815: 782: 779: 776: 773: 770: 755:intuitionistic 750: 749: 736: 732: 728: 723: 719: 715: 712: 709: 704: 700: 696: 691: 687: 663: 660: 644: 643: 629: 626: 623: 620: 617: 614: 611: 608: 605: 602: 597: 593: 589: 584: 580: 576: 573: 570: 565: 561: 557: 552: 548: 542: 539: 536: 533: 530: 527: 524: 521: 518: 515: 510: 506: 502: 497: 493: 489: 486: 483: 478: 474: 470: 465: 461: 436: 435: 421: 418: 415: 412: 409: 406: 403: 400: 395: 391: 387: 382: 378: 374: 371: 368: 363: 359: 355: 350: 346: 342: 337: 333: 329: 324: 320: 316: 313: 310: 305: 301: 297: 292: 288: 282: 279: 276: 273: 268: 264: 260: 255: 251: 247: 244: 241: 236: 232: 228: 223: 219: 214: 211: 208: 205: 200: 196: 192: 187: 183: 179: 176: 173: 168: 164: 160: 155: 151: 124: 123: 110: 106: 102: 97: 93: 89: 86: 83: 78: 74: 70: 65: 61: 13: 10: 9: 6: 4: 3: 2: 3242: 3231: 3228: 3227: 3225: 3212: 3208: 3201: 3198: 3193: 3189: 3185: 3179: 3175: 3171: 3166: 3161: 3157: 3153: 3147: 3145: 3141: 3136: 3132: 3127: 3126:10.1.1.8.5319 3122: 3118: 3114: 3110: 3103: 3100: 3095: 3093: 3088: 3082: 3079: 3074: 3070: 3066: 3063: 3062: 3057: 3051: 3048: 3042: 3037: 3033: 3030: 3029: 3024: 3017: 3014: 3009: 3005: 3001: 2997: 2996: 2988: 2985: 2980: 2976: 2972: 2966: 2962: 2958: 2954: 2953: 2944: 2942: 2938: 2933: 2927: 2923: 2919: 2915: 2908: 2906: 2902: 2897: 2895:9780511546464 2891: 2886: 2881: 2877: 2873: 2869: 2865: 2858: 2855: 2850: 2846: 2842: 2838: 2834: 2831: 2830: 2822: 2815: 2812: 2807: 2804: 2803: 2802:J. Symb. Log. 2795: 2793: 2789: 2784: 2780: 2776: 2770: 2768: 2764: 2759: 2753: 2749: 2745: 2739: 2737: 2735: 2733: 2731: 2729: 2727: 2723: 2717: 2715: 2713: 2709: 2701: 2699: 2697: 2693: 2685: 2683: 2681: 2659: 2650: 2647: 2638: 2633: 2620: 2612: 2609: 2606: 2601: 2588: 2580: 2575: 2562: 2554: 2551: 2548: 2543: 2530: 2520: 2511: 2506: 2493: 2485: 2482: 2479: 2474: 2461: 2452: 2443: 2438: 2425: 2417: 2414: 2411: 2406: 2393: 2378: 2377: 2376: 2374: 2370: 2345: 2341: 2332: 2324: 2318: 2315: 2312: 2304: 2300: 2291: 2283: 2273: 2272: 2271: 2252: 2248: 2239: 2231: 2228: 2225: 2220: 2216: 2207: 2195: 2194: 2193: 2191: 2187: 2183: 2175: 2173: 2170: 2166: 2162: 2161:Admissibility 2158: 2133: 2127: 2118: 2115: 2100: 2094: 2085: 2079: 2076: 2058: 2036: 2033: 2030: 2024: 2006: 2003: 1997: 1962: 1959: 1950: 1947: 1935: 1926: 1923: 1906: 1905: 1904: 1902: 1886: 1864: 1860: 1856: 1853: 1850: 1847: 1842: 1838: 1834: 1814: 1771: 1749: 1745: 1741: 1738: 1735: 1730: 1726: 1677: 1669: 1661: 1653: 1647: 1644: 1641: 1638: 1630: 1622: 1614: 1606: 1600: 1593: 1592: 1591: 1572: 1559: 1551: 1548: 1545: 1540: 1527: 1515: 1514: 1513: 1511: 1507: 1499: 1495:Main examples 1494: 1492: 1490: 1486: 1482: 1457: 1436: 1424: 1406: 1381: 1358: 1355: 1336: 1333: 1324: 1309: 1306: 1303: 1300: 1291: 1273: 1251: 1248: 1242: 1224: 1221: 1218: 1215: 1209: 1171: 1159: 1153: 1132: 1115: 1114: 1113: 1111: 1106: 1087: 1084: 1078: 1069: 1054: 1051: 1045: 1042: 1036: 995: 989: 986: 980: 965: 962: 953: 936: 933: 927: 910: 909: 882: 876: 858: 857: 836: 833: 827: 824: 818: 800: 799: 798: 796: 774: 760: 756: 734: 721: 713: 710: 707: 702: 689: 677: 676: 675: 673: 669: 661: 659: 657: 653: 649: 618: 612: 603: 600: 595: 582: 574: 571: 568: 563: 550: 537: 531: 522: 516: 513: 508: 495: 487: 484: 481: 476: 463: 448: 447: 446: 444: 441: 419: 410: 407: 398: 393: 380: 372: 369: 366: 361: 348: 340: 335: 322: 314: 311: 308: 303: 290: 280: 271: 266: 253: 245: 242: 239: 234: 221: 212: 203: 198: 185: 177: 174: 171: 166: 153: 138: 137: 136: 134: 130: 108: 95: 87: 84: 81: 76: 63: 51: 50: 49: 47: 43: 39: 35: 31: 28:framework of 27: 23: 19: 3230:Proof theory 3210: 3200: 3155: 3116: 3112: 3102: 3090: 3081: 3064: 3059: 3050: 3031: 3026: 3016: 3002:(2): 75–81. 2999: 2993: 2987: 2949: 2913: 2867: 2863: 2857: 2832: 2827: 2814: 2805: 2800: 2782: 2778: 2747: 2744:Avron, Arnon 2707: 2705: 2696:fuzzy logics 2689: 2677: 2365: 2269: 2179: 2169:completeness 2159: 2059: 1980: 1697: 1589: 1506:modal logics 1503: 1500:Modal logics 1483: 1407: 1359: 1356: 1274: 1192: 1107: 1019: 751: 670:of ordinary 665: 648:modal logics 645: 437: 125: 44:of ordinary 22:hypersequent 21: 15: 3207:Gabbay, Dov 2885:11343/31712 2870:: 151–172. 1489:disjunction 440:modal logic 36:to provide 3034:: 76–105. 2718:References 674:, written 48:, written 3160:CiteSeerX 3121:CiteSeerX 2808:(3): 900. 2785:: 97–122. 2657:⇒ 2654:Π 2651:∣ 2645:⇒ 2642:Σ 2639:∣ 2630:Θ 2626:⇒ 2617:Ω 2613:∣ 2610:⋯ 2607:∣ 2598:Θ 2594:⇒ 2585:Ω 2581:∣ 2572:Δ 2568:⇒ 2559:Γ 2555:∣ 2552:⋯ 2549:∣ 2540:Δ 2536:⇒ 2527:Γ 2518:⇒ 2515:Π 2512:∣ 2503:Θ 2499:⇒ 2490:Ω 2486:∣ 2483:⋯ 2480:∣ 2471:Θ 2467:⇒ 2458:Ω 2450:⇒ 2447:Σ 2444:∣ 2435:Δ 2431:⇒ 2422:Γ 2418:∣ 2415:⋯ 2412:∣ 2403:Δ 2399:⇒ 2390:Γ 2338:→ 2329:Γ 2325:⋀ 2319:∨ 2316:⋯ 2313:∨ 2297:→ 2288:Γ 2284:⋀ 2245:⇒ 2236:Γ 2232:∣ 2229:⋯ 2226:∣ 2213:⇒ 2204:Γ 2143:Π 2140:⇒ 2137:Σ 2134:∣ 2131:Δ 2128:◻ 2125:⇒ 2122:Γ 2119:◻ 2116:∣ 2104:Π 2098:Δ 2095:◻ 2092:⇒ 2089:Σ 2083:Γ 2080:◻ 2077:∣ 2043:Δ 2040:⇒ 2034:◻ 2028:Γ 2025:∣ 2013:Δ 2010:⇒ 2001:Γ 1998:∣ 1960:◻ 1957:⇒ 1954:Γ 1951:◻ 1948:∣ 1933:⇒ 1930:Γ 1927:◻ 1924:∣ 1887:∣ 1857:◻ 1851:… 1835:◻ 1815:◻ 1795:Γ 1775:Γ 1772:◻ 1764:we write 1739:… 1706:Γ 1674:Δ 1670:⋁ 1667:→ 1658:Γ 1654:⋀ 1648:◻ 1645:∨ 1642:⋯ 1639:∨ 1627:Δ 1623:⋁ 1620:→ 1611:Γ 1607:⋀ 1601:◻ 1569:Δ 1565:⇒ 1556:Γ 1552:∣ 1549:⋯ 1546:∣ 1537:Δ 1533:⇒ 1524:Γ 1485:Soundness 1467:Δ 1464:⇒ 1461:Γ 1458:∣ 1446:Δ 1443:⇒ 1440:Γ 1437:∣ 1434:Δ 1431:⇒ 1428:Γ 1425:∣ 1391:Δ 1388:⇒ 1385:Γ 1382:∣ 1340:Δ 1331:⇒ 1328:Γ 1325:∣ 1313:Δ 1298:⇒ 1295:Γ 1292:∣ 1258:Δ 1255:⇒ 1246:Γ 1243:∣ 1231:Δ 1228:⇒ 1213:Γ 1210:∣ 1175:Π 1169:Δ 1166:⇒ 1163:Σ 1157:Γ 1154:∣ 1142:Δ 1139:⇒ 1136:Γ 1133:∣ 1091:Δ 1082:→ 1076:⇒ 1073:Γ 1070:∣ 1058:Δ 1049:⇒ 1040:Γ 1037:∣ 1002:Δ 999:⇒ 993:→ 984:Γ 981:∣ 969:Δ 960:⇒ 957:Γ 954:∣ 943:Δ 940:⇒ 931:Γ 928:∣ 892:Δ 889:⇒ 886:⊥ 880:Γ 877:∣ 840:Δ 831:⇒ 822:Γ 819:∣ 778:→ 772:⊥ 731:Δ 727:⇒ 718:Γ 714:∣ 711:⋯ 708:∣ 699:Δ 695:⇒ 686:Γ 628:Ω 625:⇒ 622:Θ 619:∣ 616:Π 613:◻ 610:⇒ 607:Σ 604:◻ 601:∣ 592:Δ 588:⇒ 579:Γ 575:∣ 572:⋯ 569:∣ 560:Δ 556:⇒ 547:Γ 541:Ω 535:Π 532:◻ 529:⇒ 526:Θ 520:Σ 517:◻ 514:∣ 505:Δ 501:⇒ 492:Γ 488:∣ 485:⋯ 482:∣ 473:Δ 469:⇒ 460:Γ 417:⇒ 414:Π 411:∣ 405:⇒ 402:Σ 399:∣ 390:Θ 386:⇒ 377:Ω 373:∣ 370:⋯ 367:∣ 358:Θ 354:⇒ 345:Ω 341:∣ 332:Δ 328:⇒ 319:Γ 315:∣ 312:⋯ 309:∣ 300:Δ 296:⇒ 287:Γ 278:⇒ 275:Π 272:∣ 263:Θ 259:⇒ 250:Ω 246:∣ 243:⋯ 240:∣ 231:Θ 227:⇒ 218:Ω 210:⇒ 207:Σ 204:∣ 195:Δ 191:⇒ 182:Γ 178:∣ 175:⋯ 172:∣ 163:Δ 159:⇒ 150:Γ 105:Δ 101:⇒ 92:Γ 88:∣ 85:⋯ 82:∣ 73:Δ 69:⇒ 60:Γ 3224:Category 3209:(2008). 3096:: 81–96. 3092:Tableaux 2849:37437016 2835:: 3–15. 2165:cut rule 1698:Here if 672:sequents 668:multiset 46:sequents 42:multiset 32:used in 3192:7456109 2708:cortege 2702:History 3190:  3180:  3162:  3123:  2979:221813 2977:  2967:  2928:  2892:  2847:  2754:  654:, and 20:, the 3188:S2CID 2975:S2CID 2845:S2CID 2824:(PDF) 1807:with 3178:ISBN 3094:2013 2965:ISBN 2926:ISBN 2890:ISBN 2752:ISBN 2694:and 793:for 131:LC ( 3170:doi 3131:doi 3069:doi 3036:doi 3032:656 3004:doi 3000:115 2957:doi 2918:doi 2880:hdl 2872:doi 2837:doi 135:) 16:In 3226:: 3186:. 3176:. 3168:. 3143:^ 3129:. 3117:13 3115:. 3065:11 3025:. 2998:. 2973:. 2963:. 2940:^ 2924:. 2904:^ 2888:. 2878:. 2868:28 2843:. 2826:. 2806:48 2791:^ 2783:98 2781:. 2766:^ 2725:^ 2712:S5 2698:. 2373:LC 1901:S5 650:, 445:: 443:S5 3194:. 3172:: 3137:. 3133:: 3075:. 3071:: 3044:. 3038:: 3010:. 3006:: 2981:. 2959:: 2934:. 2920:: 2898:. 2882:: 2874:: 2851:. 2839:: 2833:1 2760:. 2660:A 2648:B 2634:m 2621:m 2602:1 2589:1 2576:n 2563:n 2544:1 2531:1 2521:B 2507:m 2494:m 2475:1 2462:1 2453:A 2439:n 2426:n 2407:1 2394:1 2351:) 2346:n 2342:A 2333:n 2322:( 2310:) 2305:1 2301:A 2292:1 2281:( 2253:n 2249:A 2240:n 2221:1 2217:A 2208:1 2111:G 2101:, 2086:, 2072:G 2037:A 2031:, 2020:G 2007:A 2004:, 1993:G 1963:A 1943:G 1936:A 1919:G 1865:n 1861:A 1854:, 1848:, 1843:1 1839:A 1750:n 1746:A 1742:, 1736:, 1731:1 1727:A 1683:) 1678:n 1662:n 1651:( 1636:) 1631:1 1615:1 1604:( 1573:n 1560:n 1541:1 1528:1 1453:G 1420:G 1377:G 1370:G 1337:, 1334:A 1320:G 1310:, 1307:A 1304:, 1301:A 1287:G 1252:A 1249:, 1238:G 1225:A 1222:, 1219:A 1216:, 1205:G 1172:, 1160:, 1149:G 1128:G 1088:, 1085:B 1079:A 1065:G 1055:, 1052:B 1046:A 1043:, 1032:G 996:B 990:A 987:, 976:G 966:, 963:A 949:G 937:B 934:, 923:G 883:, 872:G 837:, 834:p 828:p 825:, 814:G 781:} 775:, 769:{ 735:n 722:n 703:1 690:1 596:n 583:n 564:1 551:1 538:, 523:, 509:n 496:n 477:1 464:1 420:A 408:B 394:m 381:m 362:1 349:1 336:n 323:n 304:1 291:1 281:B 267:m 254:m 235:1 222:1 213:A 199:n 186:n 167:1 154:1 109:n 96:n 77:1 64:1

Index

mathematical logic
proof-theoretical
sequent calculi
structural proof theory
analytic calculi
multiset
sequents
intermediate logic
Gödel–Dummett logic
modal logic
S5
modal logics
intermediate logics
substructural logics
multiset
sequents
intuitionistic
functionally complete
classical propositional logic
structural rules
Soundness
disjunction
modal logics
sequent calculi
S5
Admissibility
cut rule
completeness
single-succedent sequents
intermediate logics

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