Knowledge (XXG)

Shuffle algebra

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758:, Encyclopedia of Mathematics and Its Applications, vol. 17, Perrin, D.; Reutenauer, C.; Berstel, J.; Pin, J. E.; Pirillo, G.; Foata, D.; Sakarovitch, J.; Simon, I.; Schützenberger, M. P.; Choffrut, C.; Cori, R.; Lyndon, Roger; Rota, Gian-Carlo. Foreword by Roger Lyndon (2nd ed.), 795: 726: 767: 702: 497: 65: 697: 759: 279: 91: 58: 274:. The name "shuffle product" refers to the fact that the product can be thought of as a sum over all ways of 95: 87: 679:, Textos de Matemática. Série B, vol. 9, Coimbra: Universidade de Coimbra Departamento de Matemática, 847: 842: 621: 568: 90:; this is because it is able to preserve the relative order of factors being multiplied together - the 692: 287: 283: 646: 585: 76: 791: 763: 722: 638: 616: 809: 790:, London Mathematical Society Monographs. New Series, vol. 7, Oxford University Press, 773: 740: 714: 662: 630: 612: 601: 577: 69: 805: 736: 684: 658: 597: 566:(1958), "Free differential calculus. IV. The quotient groups of the lower central series", 813: 801: 777: 744: 732: 680: 666: 654: 605: 593: 502: 315: 275: 836: 713:, Mathematical Surveys and Monographs, vol. 168, American Mathematical Society, 827: 563: 248: 35: 785: 674: 751: 80: 38:
with a basis corresponding to words on some set, whose product is given by the
17: 642: 559: 57:: the sum of all ways of interlacing them. The interlacing is given by the 293:
The shuffle product of two words in some alphabet is often denoted by the
308: 145:
ways of interleaving the two words, as shown in the following examples:
718: 650: 589: 298: 634: 581: 75:
Over the rational numbers, the shuffle algebra is isomorphic to the
709:
Hazewinkel, Michiel; Gubareni, Nadiya; Kirichenko, V. V. (2010),
488:
The infiltration product is also commutative and associative.
64:
The shuffle algebra on a finite set is the graded dual of the
711:
Algebras, rings and modules. Lie algebras and Hopf algebras
98:, which becomes appropriate when factors are commutative. 334:. It is defined inductively on words over an alphabet 86:The shuffle product occurs in generic settings in 676:Shuffle algebras, Lie algebras and quantum groups 271: 331: 8: 545: 533: 521: 106:The shuffle product of words of lengths 514: 619:(1953), "On the groups of H(Π,n). I", 270:The shuffle product was introduced by 94:. This can be held in contrast to the 7: 25: 196:It may be defined inductively by 278:two words together: this is the 784:Reutenauer, Christophe (1993), 272:Eilenberg & Mac Lane (1953) 1: 332:Chen, Fox & Lyndon (1958) 498:Hopf algebra of permutations 66:universal enveloping algebra 698:Encyclopedia of Mathematics 864: 760:Cambridge University Press 280:riffle shuffle permutation 92:riffle shuffle permutation 59:riffle shuffle permutation 259:are single elements, and 691:Hazewinkel, M. (2001) , 88:non-commutative algebras 96:divided power structure 828:Shuffle product symbol 756:Combinatorics on words 295:shuffle product symbol 673:Green, J. A. (1995), 622:Annals of Mathematics 569:Annals of Mathematics 267:are arbitrary words. 328:infiltration product 326:The closely related 322:Infiltration product 27:Mathematical concept 307:, derived from the 617:Mac Lane, Saunders 330:was introduced by 282:. The product is 114:is a sum over the 77:polynomial algebra 30:In mathematics, a 797:978-0-19-853679-6 787:Free Lie algebras 728:978-0-8218-5262-0 693:"Shuffle algebra" 625:, Second Series, 613:Eilenberg, Samuel 572:, Second Series, 524:, p. 101,126 313:⟨ш⟩ 301:character U+29E2 16:(Redirected from 855: 816: 780: 747: 719:10.1090/surv/168 705: 687: 669: 608: 564:Lyndon, Roger C. 558:Chen, Kuo-Tsai; 549: 543: 537: 531: 525: 519: 314: 306: 305: 276:riffle shuffling 144: 142: 141: 131: 128: 70:free Lie algebra 21: 863: 862: 858: 857: 856: 854: 853: 852: 833: 832: 824: 819: 798: 783: 770: 750: 729: 708: 690: 672: 635:10.2307/1969820 611: 582:10.2307/1970044 557: 553: 552: 544: 540: 532: 528: 520: 516: 511: 503:Zinbiel algebra 494: 324: 312: 304:SHUFFLE PRODUCT 303: 302: 247:where ε is the 132: 129: 118: 117: 115: 104: 102:Shuffle product 40:shuffle product 32:shuffle algebra 28: 23: 22: 18:Shuffle product 15: 12: 11: 5: 861: 859: 851: 850: 845: 835: 834: 831: 830: 823: 822:External links 820: 818: 817: 796: 781: 768: 748: 727: 706: 688: 670: 609: 554: 551: 550: 538: 526: 513: 512: 510: 507: 506: 505: 500: 493: 490: 486: 485: 452: 419: 418: 385: 323: 320: 245: 244: 211: 194: 193: 180: 103: 100: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 860: 849: 848:Hopf algebras 846: 844: 843:Combinatorics 841: 840: 838: 829: 826: 825: 821: 815: 811: 807: 803: 799: 793: 789: 788: 782: 779: 775: 771: 769:0-521-59924-5 765: 761: 757: 753: 749: 746: 742: 738: 734: 730: 724: 720: 716: 712: 707: 704: 700: 699: 694: 689: 686: 682: 678: 677: 671: 668: 664: 660: 656: 652: 648: 644: 640: 636: 632: 629:(1): 55–106, 628: 624: 623: 618: 614: 610: 607: 603: 599: 595: 591: 587: 583: 579: 575: 571: 570: 565: 561: 560:Fox, Ralph H. 556: 555: 548:, p. 128 547: 546:Lothaire 1997 542: 539: 536:, p. 126 535: 534:Lothaire 1997 530: 527: 523: 522:Lothaire 1997 518: 515: 508: 504: 501: 499: 496: 495: 491: 489: 484: 480: 476: 472: 468: 464: 460: 456: 453: 451: 447: 443: 439: 435: 431: 427: 424: 423: 422: 421:For example: 417: 413: 409: 405: 401: 397: 393: 389: 386: 384: 380: 376: 372: 368: 364: 360: 356: 352: 348: 344: 341: 340: 339: 337: 333: 329: 321: 319: 317: 310: 300: 296: 291: 289: 285: 281: 277: 273: 268: 266: 262: 258: 254: 250: 243: 239: 235: 231: 227: 223: 219: 215: 212: 210: 206: 202: 199: 198: 197: 192: 188: 184: 181: 179: 175: 171: 167: 163: 159: 155: 151: 148: 147: 146: 139: 135: 126: 122: 113: 109: 101: 99: 97: 93: 89: 84: 82: 78: 73: 71: 67: 62: 60: 56: 52: 49:of two words 48: 44: 41: 37: 33: 19: 786: 755: 752:Lothaire, M. 710: 696: 675: 626: 620: 576:(1): 81–95, 573: 567: 541: 529: 517: 487: 482: 478: 474: 470: 466: 462: 458: 454: 449: 445: 441: 437: 433: 429: 425: 420: 415: 411: 407: 403: 399: 395: 391: 387: 382: 378: 374: 370: 366: 362: 358: 354: 350: 346: 342: 335: 327: 325: 294: 292: 269: 264: 260: 256: 252: 246: 241: 237: 233: 229: 225: 221: 217: 213: 208: 204: 200: 195: 190: 186: 182: 177: 173: 169: 165: 161: 157: 153: 149: 137: 133: 124: 120: 111: 107: 105: 85: 81:Lyndon words 74: 72:on the set. 63: 54: 50: 46: 42: 39: 36:Hopf algebra 31: 29: 288:associative 284:commutative 837:Categories 814:0798.17001 778:0874.20040 745:1211.16023 667:0050.39304 606:0142.22304 509:References 249:empty word 203:⧢ ε = ε ⧢ 703:EMS Press 643:0003-486X 754:(1997), 492:See also 309:Cyrillic 806:1231799 737:2724822 685:1399082 659:0056295 651:1969820 598:0102539 590:1970044 311:letter 299:Unicode 143:⁠ 116:⁠ 79:in the 68:of the 812:  804:  794:  776:  766:  743:  735:  725:  683:  665:  657:  649:  641:  604:  596:  588:  647:JSTOR 586:JSTOR 191:aaaaa 34:is a 792:ISBN 764:ISBN 723:ISBN 639:ISSN 483:baba 479:baab 475:abba 471:abab 450:abab 446:aabb 444:+ 4 286:and 263:and 255:and 189:= 10 178:xyab 174:xayb 170:axyb 166:xaby 162:axby 158:abxy 110:and 810:Zbl 774:Zbl 741:Zbl 715:doi 663:Zbl 631:doi 602:Zbl 578:doi 477:+ 2 473:+ 2 467:bab 463:aba 448:+ 2 442:abb 440:+ 2 438:aab 436:+ 2 406:+ ( 394:= ( 373:+ ( 361:+ ( 349:= ( 338:by 318:). 316:sha 297:⧢ ( 232:+ ( 220:= ( 183:aaa 839:: 808:, 802:MR 800:, 772:, 762:, 739:, 733:MR 731:, 721:, 701:, 695:, 681:MR 661:, 655:MR 653:, 645:, 637:, 627:58 615:; 600:, 594:MR 592:, 584:, 574:68 562:; 481:+ 469:+ 465:+ 461:= 459:ba 457:↑ 455:ab 434:ab 432:= 430:ab 428:↑ 426:ab 410:↑ 408:fa 400:gb 398:↑ 392:gb 390:↑ 388:fa 377:↑ 365:↑ 363:fa 355:ga 353:↑ 347:ga 345:↑ 343:fa 290:. 251:, 236:⧢ 234:ua 226:vb 224:⧢ 218:vb 216:⧢ 214:ua 207:= 187:aa 185:⧢ 176:+ 172:+ 168:+ 164:+ 160:+ 156:= 154:xy 152:⧢ 150:ab 127:)! 83:. 61:. 53:, 45:⧢ 717:: 633:: 580:: 416:b 414:) 412:g 404:a 402:) 396:f 383:a 381:) 379:g 375:f 371:a 369:) 367:g 359:a 357:) 351:f 336:A 265:v 261:u 257:b 253:a 242:b 240:) 238:v 230:a 228:) 222:u 209:u 205:u 201:u 140:! 138:n 136:! 134:m 130:/ 125:n 123:+ 121:m 119:( 112:n 108:m 55:Y 51:X 47:Y 43:X 20:)

Index

Shuffle product
Hopf algebra
riffle shuffle permutation
universal enveloping algebra
free Lie algebra
polynomial algebra
Lyndon words
non-commutative algebras
riffle shuffle permutation
divided power structure
empty word
Eilenberg & Mac Lane (1953)
riffle shuffling
riffle shuffle permutation
commutative
associative
Unicode
Cyrillic
sha
Chen, Fox & Lyndon (1958)
Hopf algebra of permutations
Zinbiel algebra
Lothaire 1997
Lothaire 1997
Lothaire 1997
Fox, Ralph H.
Lyndon, Roger C.
Annals of Mathematics
doi
10.2307/1970044

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