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Doubly stochastic matrix

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2877: 1582:(a positive integer), the column sums are equal to 1, and all cells are non-negative (the sum of the row sums being equal to the number of columns). Any matrix in this form can be expressed as a convex combination of matrices in the same form made up of 0s and 1s. The proof is to replace the 1352: 1614:
In the same way it is possible to replicate columns as well as rows, but the result of recombination is not necessarily limited to 0s and 1s. A different generalisation (with a significantly harder proof) has been put forward by R. M. Caron et al.
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The product of two doubly stochastic matrices is doubly stochastic. However, the inverse of a nonsingular doubly stochastic matrix need not be doubly stochastic (indeed, the inverse is doubly stochastic if it has nonnegative
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because one of these constraints is dependent, as the sum of the row sums must equal the sum of the column sums.) Moreover, the entries are all constrained to be non-negative and less than or equal to 1.
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by removing scalar multiples of permutation matrices until we arrive at the zero matrix, at which point we will have constructed a convex combination of permutation matrices equal to the original
175: 191:: if every row sums to 1 then the sum of all entries in the matrix must be equal to the number of rows, and since the same holds for columns, the number of rows and columns must be equal. 1252: 1247: 684: 1037: 93: 492: 306: 229: 930: 526: 462: 333: 263: 395: 366: 958: 844: 1133: 960:. Proofs of this conjecture were published in 1980 by B. Gyires and in 1981 by G. P. Egorychev and D. I. Falikman; for this work, Egorychev and Falikman won the 418: 872: 546: 551: 2535: 17: 2749: 1968: 692: 2840: 1712:, IMS Lecture Notes – Monographs Series, edited by L. RĂŒschendorf, B. Schweizer, and M. D. Taylor, vol. 28, pp. 65-75 (1996) | 1559:
to exactly one (distinct) column. These edges define a permutation matrix whose non-zero cells correspond to non-zero cells in
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states that any matrix with strictly positive entries can be made doubly stochastic by pre- and post-multiplication by
1347:{\displaystyle X-\lambda P={\frac {1}{12}}{\begin{pmatrix}7&0&3\\0&6&4\\3&4&3\end{pmatrix}}} 1857:
Falikman, D. I. (1981), "Proof of the van der Waerden conjecture on the permanent of a doubly stochastic matrix",
2560: 1734: 877: 2107: 1600: ; to apply Birkhoff's theorem to the resulting square matrix; and at the end to additively recombine the 1219: 2324: 1961: 1123:{\displaystyle X={\frac {1}{12}}{\begin{pmatrix}7&0&5\\2&6&4\\3&6&3\end{pmatrix}}} 2399: 643: 2555: 2077: 1904: 1689: 1552: 1019:
will be a scalar multiple of a doubly stochastic matrix and will have at least one more zero cell than
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Gyires, B. (1980), "The common source of several inequalities concerning doubly stochastic matrices",
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are satisfied, and that we can therefore find a set of edges in the graph which join each row in
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independent linear constraints specifying that the row and column sums all equal 1. (There are
272: 208: 897: 2615: 2352: 2202: 2197: 2032: 2007: 2002: 810: 266: 1655: 2809: 2167: 1997: 1977: 1870: 1843: 1812: 1793: 1770: 1629: 1209:{\displaystyle P={\begin{pmatrix}0&0&1\\1&0&0\\0&1&0\end{pmatrix}}} 847: 504: 440: 311: 241: 1941: 1922: 371: 342: 8: 2830: 2804: 2382: 2187: 2177: 1724:
W. B. Jurkat and H. J. Ryser, "Term Ranks and Permanents of Nonnegative Matrices" (1967).
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be a doubly stochastic matrix. Then we will show that there exists a permutation matrix
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There is a simple generalisation to matrices with more columns and rows such that the
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Egorychev, G. P. (1981), "The solution of van der Waerden's problem for permanents",
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Egorychev, G. P. (1981), "Proof of the van der Waerden conjecture for permanents",
1788:(in Russian), Krasnoyarsk: Akad. Nauk SSSR Sibirsk. Otdel. Inst. Fiz., p. 12, 2480: 786:, and may not be unique. It is often described as a real-valued generalization of 633:{\displaystyle \theta _{1},\ldots ,\theta _{k}\geq 0,\sum _{i=1}^{k}\theta _{i}=1} 2585: 2520: 2500: 2485: 2465: 2449: 2347: 2278: 2268: 2227: 2112: 2082: 1866: 1839: 1808: 1789: 1766: 1363: 961: 814: 336: 232: 790:, where the correspondence is established through adjacency matrices of graphs. 2845: 2789: 2769: 2754: 2713: 2590: 2550: 2515: 2439: 2378: 2357: 2298: 2288: 2273: 2207: 2152: 2142: 2137: 2047: 1759:
Publicationes Mathematicae Institutum Mathematicum Universitatis Debreceniensis
1903:. Encyclopedia of Mathematics and Its Applications. Vol. 108. Cambridge: 2907: 2850: 2708: 2649: 2580: 2570: 2565: 2490: 2419: 2293: 2283: 2212: 2132: 2117: 2052: 188: 51: 39: 2733: 2690: 2595: 2308: 2247: 2157: 2037: 804: 1713: 2575: 2545: 2313: 2147: 2017: 1023:. Accordingly we may successively reduce the number of non-zero cells in 465: 96: 35: 31: 1883: 2626: 2087: 1370:
are listed in one part and the columns in the other, and in which row
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is uniform if and only if its transition matrix is doubly stochastic.
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is known as a 'convex combination'.) A proof of the theorem based on
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R. M. Caron, Xin Li, P. MikusiƄski, H. Sherwood, and M. D. Taylor,
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Indeed, any matrix that is both left and right stochastic must be
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The stationary distribution of an irreducible aperiodic finite
997: ≠ 0. Thus if we let λ be the smallest 970: 932:, achieved by the matrix for which all entries are equal to 757:{\displaystyle X=\theta _{1}P_{1}+\cdots +\theta _{k}P_{k}.} 528:
are precisely the permutation matrices. In other words, if
1886:, Mathematical Optimization Society, retrieved 2012-08-19. 1658:
Inequalities: Theory of Majorization and Its Applications
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separate rows, each equal to the original row divided by
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PlanetMath page on proof of Birkhoff–von Neumann theorem
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Distributions with Fixed Marginals and Related Topics
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We want to express the sizes | 2536:Fundamental (linear differential equation) 1969: 1955: 1833: 1817: 1798: 971:Proof of the Birkhoff–von Neumann theorem 1856: 1783: 1685: 1683: 1396:as the set of columns joined to rows in 1242:{\displaystyle \lambda ={\frac {2}{12}}} 2841:Matrix representation of conic sections 1894: 1700: 1698: 14: 2906: 1756: 1706:Nonsquare “doubly stochastic” matrices 1950: 1718: 1680: 1452: ≠ 0 are included in 1695: 782:This representation is known as the 194: 793: 679:{\displaystyle P_{1},\ldots ,P_{k}} 24: 1976: 1566: 1551:It follows that the conditions of 1408:| of the two sets in terms of the 784:Birkhoff–von Neumann decomposition 776: 25: 2925: 1930: 2875: 846:, all bistochastic matrices are 308:-dimensional affine subspace of 231:doubly stochastic matrices is a 2743:Used in science and engineering 1389:be any set of rows, and define 1986:Explicitly constrained entries 1877: 1850: 1777: 1750: 1727: 1647: 1586:row of the original matrix by 990: ≠ 0 whenever 894:doubly stochastic matrices is 289: 276: 265:. Using the matrix entries as 82: 66: 13: 1: 2760:Fundamental (computer vision) 1640: 1463:is doubly stochastic; hence | 1899:Combinatorial matrix classes 1895:Brualdi, Richard A. (2006). 1835:10.1016/0001-8708(81)90044-X 1739:Jber. Deutsch. Math.-Verein. 1004:corresponding to a non-zero 878:Van der Waerden's conjecture 431:Birkhoff–von Neumann theorem 425:Birkhoff–von Neumann theorem 18:Birkhoff–von Neumann theorem 7: 2526:Duplication and elimination 2325:eigenvalues or eigenvectors 1714:DOI:10.1214/lnms/1215452610 1618: 497:, and furthermore that the 437:) states that the polytope 10: 2930: 2459:With specific applications 2088:Discrete Fourier Transform 1905:Cambridge University Press 1385: ≠ 0. Let 198: 88:{\displaystyle X=(x_{ij})} 2869: 2818: 2750:Cabibbo–Kobayashi–Maskawa 2742: 2688: 2624: 2458: 2377:Satisfying conditions on 2376: 2322: 2261: 1985: 1859:Akademiya Nauk Soyuza SSR 767:(Such a decomposition of 640:and permutation matrices 487:{\displaystyle n\times n} 301:{\displaystyle (n-1)^{2}} 224:{\displaystyle n\times n} 1784:Egoryčev, G. P. (1980), 1692:, notes by GĂĄbor Hetyei. 1441:is 1, since all columns 925:{\displaystyle n!/n^{n}} 397:constraints rather than 44:doubly stochastic matrix 2108:Generalized permutation 1821:Advances in Mathematics 1654:Marshal, Olkin (1979). 1553:Hall's marriage theorem 1533:are limited to rows in 1374:is connected to column 773:Hall's marriage theorem 433:(often known simply as 2882:Mathematics portal 1737:(1926), "Aufgabe 45", 1735:van der Waerden, B. L. 1503:| is the sum over all 1467:| is the sum over all 1348: 1243: 1210: 1124: 954: 926: 868: 840: 758: 680: 634: 613: 542: 522: 488: 458: 414: 391: 362: 329: 302: 259: 225: 184:and right stochastic. 171: 89: 1544:| ≥ | 1366:in which the rows of 1349: 1244: 1211: 1125: 955: 927: 874:this is not the case. 869: 841: 759: 681: 635: 593: 543: 523: 521:{\displaystyle B_{n}} 489: 459: 457:{\displaystyle B_{n}} 415: 392: 363: 330: 328:{\displaystyle n^{2}} 303: 267:Cartesian coordinates 260: 258:{\displaystyle B_{n}} 226: 172: 90: 1630:Unistochastic matrix 1575:row sum is equal to 1253: 1220: 1134: 1038: 936: 898: 858: 824: 693: 644: 552: 532: 505: 495:permutation matrices 472: 441: 401: 390:{\displaystyle 2n-1} 372: 361:{\displaystyle 2n-1} 343: 312: 273: 242: 209: 106: 57: 2831:Linear independence 2078:Diagonally dominant 1865:(6): 931–938, 957, 1801:Akademiya Nauk SSSR 1607:rows into a single 1507:(whether or not in 1015: â€“ λ 953:{\displaystyle 1/n} 839:{\displaystyle n=2} 48:bistochastic matrix 2836:Matrix exponential 2826:Jordan normal form 2660:Fisher information 2531:Euclidean distance 2445:Totally unimodular 1690:Birkhoff's theorem 1635:Birkhoff algorithm 1344: 1338: 1239: 1206: 1200: 1120: 1114: 950: 922: 864: 836: 811:Sinkhorn's theorem 754: 676: 630: 538: 518: 484: 454: 435:Birkhoff's theorem 413:{\displaystyle 2n} 410: 387: 358: 325: 298: 255: 221: 167: 144: 118: 85: 2901: 2900: 2893:Category:Matrices 2765:Fuzzy associative 2655:Doubly stochastic 2363:Positive-definite 2043:Block tridiagonal 1914:978-0-521-86565-4 1807:(6): 65–71, 225, 1673:978-0-12-473750-1 1625:Stochastic matrix 1279: 1237: 1055: 1011:, the difference 880:that the minimum 867:{\displaystyle n} 854:, but for larger 815:diagonal matrices 541:{\displaystyle X} 237:Birkhoff polytope 201:Birkhoff polytope 195:Birkhoff polytope 135: 109: 16:(Redirected from 2921: 2888:List of matrices 2880: 2879: 2856:Row echelon form 2800:State transition 2729:Seidel adjacency 2611:Totally positive 2471:Alternating sign 2068:Complex Hadamard 1971: 1964: 1957: 1948: 1947: 1926: 1902: 1887: 1881: 1875: 1873: 1854: 1848: 1846: 1837: 1815: 1796: 1781: 1775: 1773: 1765:(3–4): 291–304, 1754: 1748: 1746: 1731: 1725: 1722: 1716: 1702: 1693: 1687: 1678: 1677: 1661: 1651: 1542: 1520: 1501: 1484: 1457: 1394: 1353: 1351: 1350: 1345: 1343: 1342: 1280: 1272: 1248: 1246: 1245: 1240: 1238: 1230: 1215: 1213: 1212: 1207: 1205: 1204: 1129: 1127: 1126: 1121: 1119: 1118: 1056: 1048: 1034:For instance if 959: 957: 956: 951: 946: 931: 929: 928: 923: 921: 920: 911: 893: 873: 871: 870: 865: 845: 843: 842: 837: 794:Other properties 763: 761: 760: 755: 750: 749: 740: 739: 721: 720: 711: 710: 685: 683: 682: 677: 675: 674: 656: 655: 639: 637: 636: 631: 623: 622: 612: 607: 583: 582: 564: 563: 547: 545: 544: 539: 527: 525: 524: 519: 517: 516: 493: 491: 490: 485: 463: 461: 460: 455: 453: 452: 419: 417: 416: 411: 396: 394: 393: 388: 367: 365: 364: 359: 334: 332: 331: 326: 324: 323: 307: 305: 304: 299: 297: 296: 269:, it lies in an 264: 262: 261: 256: 254: 253: 230: 228: 227: 222: 176: 174: 173: 168: 157: 156: 143: 131: 130: 117: 94: 92: 91: 86: 81: 80: 34:, especially in 21: 2929: 2928: 2924: 2923: 2922: 2920: 2919: 2918: 2904: 2903: 2902: 2897: 2874: 2865: 2814: 2738: 2684: 2620: 2454: 2372: 2318: 2257: 2058:Centrosymmetric 1981: 1975: 1933: 1915: 1891: 1890: 1884:Fulkerson Prize 1882: 1878: 1855: 1851: 1782: 1778: 1755: 1751: 1732: 1728: 1723: 1719: 1703: 1696: 1688: 1681: 1674: 1652: 1648: 1643: 1621: 1605: 1598: 1591: 1580: 1569: 1567:Generalisations 1540: 1527: 1518: 1499: 1491: 1482: 1455: 1450: 1439: 1426:, the sum over 1413: 1392: 1383: 1364:bipartite graph 1337: 1336: 1331: 1326: 1320: 1319: 1314: 1309: 1303: 1302: 1297: 1292: 1282: 1281: 1271: 1254: 1251: 1250: 1229: 1221: 1218: 1217: 1199: 1198: 1193: 1188: 1182: 1181: 1176: 1171: 1165: 1164: 1159: 1154: 1144: 1143: 1135: 1132: 1131: 1113: 1112: 1107: 1102: 1096: 1095: 1090: 1085: 1079: 1078: 1073: 1068: 1058: 1057: 1047: 1039: 1036: 1035: 1009: 1002: 995: 988: 973: 962:Fulkerson Prize 942: 937: 934: 933: 916: 912: 907: 899: 896: 895: 885: 859: 856: 855: 852:orthostochastic 825: 822: 821: 796: 788:KƑnig's theorem 745: 741: 735: 731: 716: 712: 706: 702: 694: 691: 690: 670: 666: 651: 647: 645: 642: 641: 618: 614: 608: 597: 578: 574: 559: 555: 553: 550: 549: 533: 530: 529: 512: 508: 506: 503: 502: 473: 470: 469: 448: 444: 442: 439: 438: 427: 402: 399: 398: 373: 370: 369: 344: 341: 340: 337:Euclidean space 319: 315: 313: 310: 309: 292: 288: 274: 271: 270: 249: 245: 243: 240: 239: 233:convex polytope 210: 207: 206: 203: 197: 149: 145: 139: 123: 119: 113: 107: 104: 103: 95:of nonnegative 73: 69: 58: 55: 54: 28: 27:A square matrix 23: 22: 15: 12: 11: 5: 2927: 2917: 2916: 2899: 2898: 2896: 2895: 2890: 2885: 2870: 2867: 2866: 2864: 2863: 2858: 2853: 2848: 2846:Perfect matrix 2843: 2838: 2833: 2828: 2822: 2820: 2816: 2815: 2813: 2812: 2807: 2802: 2797: 2792: 2787: 2782: 2777: 2772: 2767: 2762: 2757: 2752: 2746: 2744: 2740: 2739: 2737: 2736: 2731: 2726: 2721: 2716: 2711: 2706: 2701: 2695: 2693: 2686: 2685: 2683: 2682: 2677: 2672: 2667: 2662: 2657: 2652: 2647: 2642: 2637: 2631: 2629: 2622: 2621: 2619: 2618: 2616:Transformation 2613: 2608: 2603: 2598: 2593: 2588: 2583: 2578: 2573: 2568: 2563: 2558: 2553: 2548: 2543: 2538: 2533: 2528: 2523: 2518: 2513: 2508: 2503: 2498: 2493: 2488: 2483: 2478: 2473: 2468: 2462: 2460: 2456: 2455: 2453: 2452: 2447: 2442: 2437: 2432: 2427: 2422: 2417: 2412: 2407: 2402: 2393: 2387: 2385: 2374: 2373: 2371: 2370: 2365: 2360: 2355: 2353:Diagonalizable 2350: 2345: 2340: 2335: 2329: 2327: 2323:Conditions on 2320: 2319: 2317: 2316: 2311: 2306: 2301: 2296: 2291: 2286: 2281: 2276: 2271: 2265: 2263: 2259: 2258: 2256: 2255: 2250: 2245: 2240: 2235: 2230: 2225: 2220: 2215: 2210: 2205: 2203:Skew-symmetric 2200: 2198:Skew-Hermitian 2195: 2190: 2185: 2180: 2175: 2170: 2165: 2160: 2155: 2150: 2145: 2140: 2135: 2130: 2125: 2120: 2115: 2110: 2105: 2100: 2095: 2090: 2085: 2080: 2075: 2070: 2065: 2060: 2055: 2050: 2045: 2040: 2035: 2033:Block-diagonal 2030: 2025: 2020: 2015: 2010: 2008:Anti-symmetric 2005: 2003:Anti-Hermitian 2000: 1995: 1989: 1987: 1983: 1982: 1974: 1973: 1966: 1959: 1951: 1945: 1944: 1939: 1932: 1931:External links 1929: 1928: 1927: 1913: 1889: 1888: 1876: 1861:(in Russian), 1849: 1828:(3): 299–305, 1803:(in Russian), 1776: 1749: 1726: 1717: 1694: 1679: 1672: 1645: 1644: 1642: 1639: 1638: 1637: 1632: 1627: 1620: 1617: 1603: 1596: 1589: 1578: 1568: 1565: 1525: 1489: 1448: 1437: 1411: 1381: 1341: 1335: 1332: 1330: 1327: 1325: 1322: 1321: 1318: 1315: 1313: 1310: 1308: 1305: 1304: 1301: 1298: 1296: 1293: 1291: 1288: 1287: 1285: 1278: 1275: 1270: 1267: 1264: 1261: 1258: 1236: 1233: 1228: 1225: 1203: 1197: 1194: 1192: 1189: 1187: 1184: 1183: 1180: 1177: 1175: 1172: 1170: 1167: 1166: 1163: 1160: 1158: 1155: 1153: 1150: 1149: 1147: 1142: 1139: 1117: 1111: 1108: 1106: 1103: 1101: 1098: 1097: 1094: 1091: 1089: 1086: 1084: 1081: 1080: 1077: 1074: 1072: 1069: 1067: 1064: 1063: 1061: 1054: 1051: 1046: 1043: 1007: 1000: 993: 986: 972: 969: 966: 965: 949: 945: 941: 919: 915: 910: 906: 903: 875: 863: 835: 832: 829: 818: 808: 801: 795: 792: 765: 764: 753: 748: 744: 738: 734: 730: 727: 724: 719: 715: 709: 705: 701: 698: 673: 669: 665: 662: 659: 654: 650: 629: 626: 621: 617: 611: 606: 603: 600: 596: 592: 589: 586: 581: 577: 573: 570: 567: 562: 558: 537: 515: 511: 483: 480: 477: 468:of the set of 451: 447: 426: 423: 409: 406: 386: 383: 380: 377: 357: 354: 351: 348: 322: 318: 295: 291: 287: 284: 281: 278: 252: 248: 220: 217: 214: 199:Main article: 196: 193: 178: 177: 166: 163: 160: 155: 152: 148: 142: 138: 134: 129: 126: 122: 116: 112: 84: 79: 76: 72: 68: 65: 62: 26: 9: 6: 4: 3: 2: 2926: 2915: 2912: 2911: 2909: 2894: 2891: 2889: 2886: 2884: 2883: 2878: 2872: 2871: 2868: 2862: 2859: 2857: 2854: 2852: 2851:Pseudoinverse 2849: 2847: 2844: 2842: 2839: 2837: 2834: 2832: 2829: 2827: 2824: 2823: 2821: 2819:Related terms 2817: 2811: 2810:Z (chemistry) 2808: 2806: 2803: 2801: 2798: 2796: 2793: 2791: 2788: 2786: 2783: 2781: 2778: 2776: 2773: 2771: 2768: 2766: 2763: 2761: 2758: 2756: 2753: 2751: 2748: 2747: 2745: 2741: 2735: 2732: 2730: 2727: 2725: 2722: 2720: 2717: 2715: 2712: 2710: 2707: 2705: 2702: 2700: 2697: 2696: 2694: 2692: 2687: 2681: 2678: 2676: 2673: 2671: 2668: 2666: 2663: 2661: 2658: 2656: 2653: 2651: 2648: 2646: 2643: 2641: 2638: 2636: 2633: 2632: 2630: 2628: 2623: 2617: 2614: 2612: 2609: 2607: 2604: 2602: 2599: 2597: 2594: 2592: 2589: 2587: 2584: 2582: 2579: 2577: 2574: 2572: 2569: 2567: 2564: 2562: 2559: 2557: 2554: 2552: 2549: 2547: 2544: 2542: 2539: 2537: 2534: 2532: 2529: 2527: 2524: 2522: 2519: 2517: 2514: 2512: 2509: 2507: 2504: 2502: 2499: 2497: 2494: 2492: 2489: 2487: 2484: 2482: 2479: 2477: 2474: 2472: 2469: 2467: 2464: 2463: 2461: 2457: 2451: 2448: 2446: 2443: 2441: 2438: 2436: 2433: 2431: 2428: 2426: 2423: 2421: 2418: 2416: 2413: 2411: 2408: 2406: 2403: 2401: 2397: 2394: 2392: 2389: 2388: 2386: 2384: 2380: 2375: 2369: 2366: 2364: 2361: 2359: 2356: 2354: 2351: 2349: 2346: 2344: 2341: 2339: 2336: 2334: 2331: 2330: 2328: 2326: 2321: 2315: 2312: 2310: 2307: 2305: 2302: 2300: 2297: 2295: 2292: 2290: 2287: 2285: 2282: 2280: 2277: 2275: 2272: 2270: 2267: 2266: 2264: 2260: 2254: 2251: 2249: 2246: 2244: 2241: 2239: 2236: 2234: 2231: 2229: 2226: 2224: 2221: 2219: 2216: 2214: 2211: 2209: 2206: 2204: 2201: 2199: 2196: 2194: 2191: 2189: 2186: 2184: 2181: 2179: 2176: 2174: 2171: 2169: 2168:Pentadiagonal 2166: 2164: 2161: 2159: 2156: 2154: 2151: 2149: 2146: 2144: 2141: 2139: 2136: 2134: 2131: 2129: 2126: 2124: 2121: 2119: 2116: 2114: 2111: 2109: 2106: 2104: 2101: 2099: 2096: 2094: 2091: 2089: 2086: 2084: 2081: 2079: 2076: 2074: 2071: 2069: 2066: 2064: 2061: 2059: 2056: 2054: 2051: 2049: 2046: 2044: 2041: 2039: 2036: 2034: 2031: 2029: 2026: 2024: 2021: 2019: 2016: 2014: 2011: 2009: 2006: 2004: 2001: 1999: 1998:Anti-diagonal 1996: 1994: 1991: 1990: 1988: 1984: 1979: 1972: 1967: 1965: 1960: 1958: 1953: 1952: 1949: 1943: 1940: 1938: 1935: 1934: 1924: 1920: 1916: 1910: 1906: 1901: 1900: 1893: 1892: 1885: 1880: 1872: 1868: 1864: 1860: 1853: 1845: 1841: 1836: 1831: 1827: 1823: 1822: 1814: 1810: 1806: 1802: 1795: 1791: 1787: 1780: 1772: 1768: 1764: 1760: 1753: 1744: 1740: 1736: 1730: 1721: 1715: 1711: 1707: 1701: 1699: 1691: 1686: 1684: 1675: 1669: 1665: 1660: 1659: 1650: 1646: 1636: 1633: 1631: 1628: 1626: 1623: 1622: 1616: 1612: 1610: 1606: 1599: 1592: 1585: 1581: 1574: 1564: 1562: 1558: 1554: 1549: 1547: 1543: 1536: 1532: 1528: 1521: 1514: 1510: 1506: 1502: 1494: 1492: 1485: 1479: âˆˆ  1478: 1474: 1471: âˆˆ  1470: 1466: 1462: 1458: 1451: 1444: 1440: 1433: 1429: 1425: 1421: 1416: 1414: 1407: 1403: 1399: 1395: 1388: 1384: 1377: 1373: 1369: 1365: 1361: 1360: 1355: 1339: 1333: 1328: 1323: 1316: 1311: 1306: 1299: 1294: 1289: 1283: 1276: 1273: 1268: 1265: 1262: 1259: 1256: 1234: 1231: 1226: 1223: 1201: 1195: 1190: 1185: 1178: 1173: 1168: 1161: 1156: 1151: 1145: 1140: 1137: 1115: 1109: 1104: 1099: 1092: 1087: 1082: 1075: 1070: 1065: 1059: 1052: 1049: 1044: 1041: 1032: 1030: 1026: 1022: 1018: 1014: 1010: 1003: 996: 989: 982: 978: 968: 963: 947: 943: 939: 917: 913: 908: 904: 901: 892: 888: 883: 879: 876: 861: 853: 849: 848:unistochastic 833: 830: 827: 819: 816: 812: 809: 806: 802: 798: 797: 791: 789: 785: 780: 778: 774: 770: 751: 746: 742: 736: 732: 728: 725: 722: 717: 713: 707: 703: 699: 696: 689: 688: 687: 671: 667: 663: 660: 657: 652: 648: 627: 624: 619: 615: 609: 604: 601: 598: 594: 590: 587: 584: 579: 575: 571: 568: 565: 560: 556: 535: 513: 509: 500: 496: 481: 478: 475: 467: 449: 445: 436: 432: 422: 407: 404: 384: 381: 378: 375: 355: 352: 349: 346: 338: 335:-dimensional 320: 316: 293: 285: 282: 279: 268: 250: 246: 238: 235:known as the 234: 218: 215: 212: 205:The class of 202: 192: 190: 185: 183: 164: 161: 158: 153: 150: 146: 140: 136: 132: 127: 124: 120: 114: 110: 102: 101: 100: 98: 77: 74: 70: 63: 60: 53: 52:square matrix 49: 46:(also called 45: 41: 40:combinatorics 37: 33: 19: 2873: 2805:Substitution 2691:graph theory 2654: 2188:Quaternionic 2178:Persymmetric 1898: 1879: 1862: 1858: 1852: 1825: 1819: 1804: 1800: 1785: 1779: 1762: 1758: 1752: 1742: 1738: 1729: 1720: 1709: 1705: 1657: 1649: 1613: 1608: 1601: 1594: 1587: 1583: 1576: 1572: 1570: 1560: 1556: 1550: 1545: 1538: 1534: 1530: 1523: 1516: 1512: 1508: 1504: 1497: 1495: 1487: 1480: 1476: 1472: 1468: 1464: 1460: 1453: 1446: 1442: 1435: 1431: 1427: 1423: 1419: 1417: 1409: 1405: 1401: 1397: 1390: 1386: 1379: 1375: 1371: 1367: 1362:Construct a 1358: 1357: 1356: 1033: 1028: 1024: 1020: 1016: 1012: 1005: 998: 991: 984: 980: 976: 974: 967: 890: 886: 805:Markov chain 783: 781: 768: 766: 434: 430: 428: 236: 204: 186: 179: 97:real numbers 47: 43: 29: 2780:Hamiltonian 2704:Biadjacency 2640:Correlation 2556:Householder 2506:Commutation 2243:Vandermonde 2238:Tridiagonal 2173:Permutation 2163:Nonnegative 2148:Matrix unit 2028:Bisymmetric 1662:. pp.  1496:Meanwhile | 466:convex hull 339:defined by 36:probability 32:mathematics 2680:Transition 2675:Stochastic 2645:Covariance 2627:statistics 2606:Symplectic 2601:Similarity 2430:Unimodular 2425:Orthogonal 2410:Involutory 2405:Invertible 2400:Projection 2396:Idempotent 2338:Convergent 2233:Triangular 2183:Polynomial 2128:Hessenberg 2098:Equivalent 2093:Elementary 2073:Copositive 2063:Conference 2023:Bidiagonal 1923:1106.05001 1641:References 1511:) and all 1445:for which 1418:For every 983:such that 884:among all 686:such that 182:stochastic 2861:Wronskian 2785:Irregular 2775:Gell-Mann 2724:Laplacian 2719:Incidence 2699:Adjacency 2670:Precision 2635:Centering 2541:Generator 2511:Confusion 2496:Circulant 2476:Augmented 2435:Unipotent 2415:Nilpotent 2391:Congruent 2368:Stieltjes 2343:Defective 2333:Companion 2304:Redheffer 2223:Symmetric 2218:Sylvester 2193:Signature 2123:Hermitian 2103:Frobenius 2013:Arrowhead 1993:Alternant 1537:. Hence | 1263:λ 1260:− 1224:λ 882:permanent 800:entries). 775:is given 733:θ 726:⋯ 704:θ 661:… 616:θ 595:∑ 585:≥ 576:θ 569:… 557:θ 479:× 382:− 353:− 283:− 216:× 137:∑ 111:∑ 2914:Matrices 2908:Category 2689:Used in 2625:Used in 2586:Rotation 2561:Jacobian 2521:Distance 2501:Cofactor 2486:Carleman 2466:Adjugate 2450:Weighing 2383:inverses 2379:products 2348:Definite 2279:Identity 2269:Exchange 2262:Constant 2228:Toeplitz 2113:Hadamard 2083:Diagonal 1619:See also 964:in 1982. 499:vertices 2790:Overlap 2755:Density 2714:Edmonds 2591:Seifert 2551:Hessian 2516:Coxeter 2440:Unitary 2358:Hurwitz 2289:Of ones 2274:Hilbert 2208:Skyline 2153:Metzler 2143:Logical 2138:Integer 2048:Boolean 1980:classes 1871:0625097 1844:0642395 1813:0638007 1794:0602332 1771:0604006 1404:| and | 1249:, and 464:is the 50:) is a 2709:Degree 2650:Design 2581:Random 2571:Payoff 2566:Moment 2491:Cartan 2481:BĂ©zout 2420:Normal 2294:Pascal 2284:Lehmer 2213:Sparse 2133:Hollow 2118:Hankel 2053:Cauchy 1978:Matrix 1921:  1911:  1869:  1842:  1811:  1792:  1769:  1708:, in: 1670:  1459:, and 1359:Proof: 1130:then 189:square 2770:Gamma 2734:Tutte 2596:Shear 2309:Shift 2299:Pauli 2248:Walsh 2158:Moore 2038:Block 1745:: 117 1611:row. 1541:' 1519:' 1500:' 1483:' 1456:' 1393:' 777:below 2576:Pick 2546:Gram 2314:Zero 2018:Band 1909:ISBN 1668:ISBN 1378:iff 975:Let 850:and 820:For 501:of 429:The 42:, a 38:and 2665:Hat 2398:or 2381:or 1919:Zbl 1830:doi 1563:. 1548:|. 1522:of 1515:in 1486:of 1434:of 1430:in 1422:in 30:In 2910:: 1917:. 1907:. 1867:MR 1863:29 1840:MR 1838:, 1826:42 1824:, 1816:. 1809:MR 1805:22 1797:. 1790:MR 1767:MR 1763:27 1761:, 1743:35 1741:, 1697:^ 1682:^ 1666:. 1526:ij 1493:. 1490:ij 1475:, 1449:ij 1438:ij 1432:A' 1415:. 1412:ij 1406:A' 1382:ij 1354:. 1277:12 1235:12 1216:, 1053:12 1031:. 1008:ij 1001:ij 994:ij 987:ij 889:× 779:. 2795:S 2253:Z 1970:e 1963:t 1956:v 1925:. 1874:. 1847:. 1832:: 1774:. 1747:. 1676:. 1664:8 1609:i 1604:i 1602:r 1597:i 1595:r 1590:i 1588:r 1584:i 1579:i 1577:r 1573:i 1561:X 1557:X 1546:A 1539:A 1535:A 1531:i 1524:x 1517:A 1513:j 1509:A 1505:i 1498:A 1488:x 1481:A 1477:j 1473:A 1469:i 1465:A 1461:X 1454:A 1447:x 1443:j 1436:x 1428:j 1424:A 1420:i 1410:x 1402:A 1398:A 1391:A 1387:A 1380:x 1376:j 1372:i 1368:X 1340:) 1334:3 1329:4 1324:3 1317:4 1312:6 1307:0 1300:3 1295:0 1290:7 1284:( 1274:1 1269:= 1266:P 1257:X 1232:2 1227:= 1202:) 1196:0 1191:1 1186:0 1179:0 1174:0 1169:1 1162:1 1157:0 1152:0 1146:( 1141:= 1138:P 1116:) 1110:3 1105:6 1100:3 1093:4 1088:6 1083:2 1076:5 1071:0 1066:7 1060:( 1050:1 1045:= 1042:X 1029:X 1025:X 1021:X 1017:P 1013:X 1006:p 999:x 992:p 985:x 981:P 977:X 948:n 944:/ 940:1 918:n 914:n 909:/ 905:! 902:n 891:n 887:n 862:n 834:2 831:= 828:n 817:. 769:X 752:. 747:k 743:P 737:k 729:+ 723:+ 718:1 714:P 708:1 700:= 697:X 672:k 668:P 664:, 658:, 653:1 649:P 628:1 625:= 620:i 610:k 605:1 602:= 599:i 591:, 588:0 580:k 572:, 566:, 561:1 536:X 514:n 510:B 482:n 476:n 450:n 446:B 408:n 405:2 385:1 379:n 376:2 356:1 350:n 347:2 321:2 317:n 294:2 290:) 286:1 280:n 277:( 251:n 247:B 219:n 213:n 165:, 162:1 159:= 154:j 151:i 147:x 141:j 133:= 128:j 125:i 121:x 115:i 83:) 78:j 75:i 71:x 67:( 64:= 61:X 20:)

Index

Birkhoff–von Neumann theorem
mathematics
probability
combinatorics
square matrix
real numbers
stochastic
square
Birkhoff polytope
convex polytope
Cartesian coordinates
Euclidean space
convex hull
permutation matrices
vertices
Hall's marriage theorem
below
KƑnig's theorem
Markov chain
Sinkhorn's theorem
diagonal matrices
unistochastic
orthostochastic
Van der Waerden's conjecture
permanent
Fulkerson Prize
bipartite graph
Hall's marriage theorem
Stochastic matrix
Unistochastic matrix

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