Knowledge (XXG)

Chris Umans

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Umans received an NSF CAREER award in 2004 and an Alfred P. Sloan Fellowship in 2005. Additionally, his work has received "Best Paper" awards at the International Conference on Automata, Languages, and Programming (ICALP) and the IEEE Conference on Computational Complexity (CCC).
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Blasiak, Jonah; Church, Thomas; Cohn, Henry; Grochow, Joshua A.; Umans, Christopher (2017). "Which groups are amenable to proving exponent two for matrix multiplication?".
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Umans' research centers broadly around algorithms and complexity. He has made notable contributions to varied areas within this space including
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Automata, Languages and Programming: 35th International Colloquium, ICALP 2008, Reykjavik, Iceland, July 7-11, 2008, Proceedings, Part I
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Blasiak, Jonah; Cohn, Henry; Grochow, Joshua A.; Pratt, Kevin; Umans, Christopher (2023). "Matrix Multiplication via Matrix Groups".
508: 534: 155:, where he completed a BA degree in Mathematics and Computer Science in 1996. He then received a PhD in Computer Science from 379:
Blasiak, Jonah; Church, Thomas; Cohn, Henry; Grochow, Joshua A.; Naslund, Eric; Sawin, William F.; Umans, Christopher (2017).
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In 2008, Umans and his student Dave Buchfuhrer settled a 1979 conjecture on the complexity of
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Cohn, H.; Umans, C. (2003), "A group-theoretic approach to fast matrix multiplication",
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This won the Best Paper Award in Track A "Algorithms, Automata, Complexity and Games".
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44th Annual IEEE Symposium on Foundations of Computer Science, 2003. Proceedings
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Cohn, Henry; Kleinberg, Robert; Szegedy, Balász; Umans, Christopher (2005).
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Proc. 46th Annual IEEE Symposium on Foundations of Computer Science (FOCS)
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14th Innovations in Theoretical Computer Science Conference (ITCS 2023)
381:"On cap sets and the group-theoretic approach to matrix multiplication" 275: 402: 288: 234: 422: 393: 380: 325: 317:
Proc. 24th Annual ACM-SIAM Symposium on Discrete Algorithms (SODA)
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in the Computing and Mathematical Sciences Department at the
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Alon, Noga; Shpilka, Amir; Umans, Christopher (2013).
276:"Group-theoretic Algorithms for Matrix Multiplication" 490:
This is an extended version of the conference paper:
503:. In Luca Aceto; Ivan Damgård; et al. (eds.). 98: 88: 78: 49: 35: 25: 18: 468:"The complexity of Boolean formula minimization" 472:Journal of Computer and System Sciences (JCSS) 8: 594:California Institute of Technology faculty 15: 483: 446: 421: 392: 350:"On sunflowers and matrix multiplication" 324: 287: 233: 311:Cohn, Henry; Umans, Christopher (2013). 216: 194:; the result won a best paper award at 192:unbounded Boolean formula minimization 498:"Automata, Languages and Programming" 7: 574:Chris Umans professional home page 157:University of California, Berkeley 125:California Institute of Technology 93:California Institute of Technology 44:University of California, Berkeley 14: 509:Lecture Notes in Computer Science 599:Theoretical computer scientists 540:from the original on 2018-01-14 167:until joining Caltech in 2002. 1: 319:. SIAM. pp. 1074–1087. 521:10.1007/978-3-540-70575-8_3 448:10.4230/LIPIcs.ITCS.2023.19 615: 485:10.1016/j.jcss.2010.06.011 335:10.1137/1.9781611973105.77 282:. IEEE. pp. 379–388. 127:. He is known for work on 366:10.1007/s00037-013-0060-1 244:10.1109/SFCS.2003.1238217 141:hardness of approximation 110: 71: 62:hardness of approximation 354:Computational Complexity 177:random number generation 133:computational complexity 54:Computational complexity 161:Christos Papadimitriou 105:Christos Papadimitriou 185:matrix multiplication 183:, and algorithms for 66:matrix multiplication 298:10.1109/SFCS.2005.39 228:, pp. 438–449, 137:algebraic complexity 492:Buchfuhrer, David; 462:Buchfuhrer, David; 515:. pp. 24–35. 494:Umans, Christopher 464:Umans, Christopher 165:Microsoft Research 147:Academic biography 119:is a professor of 530:978-3-540-70574-1 385:Discrete Analysis 253:978-0-7695-2040-7 202:Awards and honors 151:Umans studied at 117:Christopher Umans 114: 113: 73:Scientific career 20:Christopher Umans 606: 561: 556: 550: 548: 546: 545: 539: 502: 489: 487: 466:(January 2011). 459: 453: 452: 450: 434: 428: 427: 425: 413: 407: 406: 403:10.19086/da.1245 396: 376: 370: 369: 345: 339: 338: 328: 308: 302: 301: 291: 271: 265: 264: 237: 221: 153:Williams College 121:Computer Science 100:Doctoral advisor 83:Computer Science 40:Williams College 16: 614: 613: 609: 608: 607: 605: 604: 603: 579: 578: 570: 565: 564: 557: 553: 543: 541: 537: 531: 513:Springer-Verlag 500: 491: 461: 460: 456: 436: 435: 431: 415: 414: 410: 378: 377: 373: 347: 346: 342: 310: 309: 305: 273: 272: 268: 254: 223: 222: 218: 213: 204: 173: 149: 36:Alma mater 21: 12: 11: 5: 612: 610: 602: 601: 596: 591: 581: 580: 577: 576: 569: 568:External links 566: 563: 562: 551: 529: 478:(1): 142–153. 454: 429: 408: 371: 360:(2): 219–243. 340: 303: 266: 252: 215: 214: 212: 209: 203: 200: 172: 169: 159:in 2000 under 148: 145: 112: 111: 108: 107: 102: 96: 95: 90: 86: 85: 80: 76: 75: 69: 68: 51: 50:Known for 47: 46: 37: 33: 32: 27: 23: 22: 19: 13: 10: 9: 6: 4: 3: 2: 611: 600: 597: 595: 592: 590: 589:Living people 587: 586: 584: 575: 572: 571: 567: 560: 559:Sloan Fellows 555: 552: 536: 532: 526: 522: 518: 514: 510: 506: 499: 495: 486: 481: 477: 473: 469: 465: 458: 455: 449: 444: 440: 433: 430: 424: 419: 412: 409: 404: 400: 395: 390: 386: 382: 375: 372: 367: 363: 359: 355: 351: 344: 341: 336: 332: 327: 322: 318: 314: 307: 304: 299: 295: 290: 285: 281: 277: 270: 267: 263: 259: 255: 249: 245: 241: 236: 231: 227: 220: 217: 210: 208: 201: 199: 197: 193: 188: 186: 182: 178: 170: 168: 166: 162: 158: 154: 146: 144: 142: 138: 134: 130: 126: 122: 118: 109: 106: 103: 101: 97: 94: 91: 87: 84: 81: 77: 74: 70: 67: 63: 59: 55: 52: 48: 45: 41: 38: 34: 31: 28: 24: 17: 554: 542:. Retrieved 504: 475: 471: 457: 438: 432: 411: 384: 374: 357: 353: 343: 316: 306: 289:math/0511460 279: 269: 235:math/0307321 225: 219: 205: 189: 174: 150: 116: 115: 89:Institutions 72: 26:Nationality 583:Categories 544:2018-01-14 423:1712.02302 394:1605.06702 211:References 129:algorithms 58:algorithms 326:1207.6528 181:expanders 535:Archived 496:(2008). 171:Research 30:American 262:5890100 527:  260:  250:  139:, and 79:Fields 538:(PDF) 501:(PDF) 418:arXiv 389:arXiv 321:arXiv 284:arXiv 258:S2CID 230:arXiv 196:ICALP 525:ISBN 248:ISBN 517:doi 480:doi 443:doi 399:doi 362:doi 331:doi 294:doi 240:doi 585:: 533:. 523:. 507:. 476:77 474:. 470:. 397:. 387:. 383:. 358:22 356:. 352:. 329:. 315:. 292:. 278:. 256:, 246:, 238:, 198:. 179:, 143:. 135:, 131:, 64:, 60:, 56:, 42:, 547:. 519:: 488:. 482:: 451:. 445:: 426:. 420:: 405:. 401:: 391:: 368:. 364:: 337:. 333:: 323:: 300:. 296:: 286:: 242:: 232::

Index

American
Williams College
University of California, Berkeley
Computational complexity
algorithms
hardness of approximation
matrix multiplication
Computer Science
California Institute of Technology
Doctoral advisor
Christos Papadimitriou
Computer Science
California Institute of Technology
algorithms
computational complexity
algebraic complexity
hardness of approximation
Williams College
University of California, Berkeley
Christos Papadimitriou
Microsoft Research
random number generation
expanders
matrix multiplication
unbounded Boolean formula minimization
ICALP
arXiv
math/0307321
doi
10.1109/SFCS.2003.1238217

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