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Syndetic set

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173: 240: 384: 69: 412: 115: 298: 260: 93: 506: 122: 480:. London Mathematical Society Lecture Note Series. Vol. 310. Cambridge University Press, Cambridge. pp. 8–39. 181: 538: 35:
having the property of "bounded gaps": that the sizes of the gaps in the sequence of natural numbers is bounded.
303: 543: 46: 428: 423: 389: 470: 98: 515: 493: 481: 466: 447: 268: 245: 78: 32: 532: 497: 485: 20: 72: 433: 520: 501: 263: 28: 502:"Partition regular structures contained in large sets are abundant" 242:. Thus syndetic sets have "bounded gaps"; for a syndetic set 392: 306: 271: 248: 184: 125: 101: 81: 49: 168:{\displaystyle \bigcup _{n\in F}(S-n)=\mathbb {N} } 406: 378: 292: 254: 235:{\displaystyle S-n=\{m\in \mathbb {N} :m+n\in S\}} 234: 167: 109: 87: 63: 471:"Minimal Idempotents and Ergodic Ramsey Theory" 8: 448:"Some Notions of Size in Partial Semigroups" 229: 197: 519: 400: 399: 391: 305: 270: 247: 207: 206: 183: 161: 160: 130: 124: 103: 102: 100: 80: 57: 56: 48: 379:{\displaystyle \bigcap S\neq \emptyset } 478:Topics in Dynamics and Ergodic Theory 64:{\displaystyle S\subset \mathbb {N} } 16:Type of subset of the natural numbers 7: 373: 14: 407:{\displaystyle a\in \mathbb {N} } 507:Journal of Combinatorial Theory 71:is called syndetic if for some 361: 307: 287: 281: 154: 142: 1: 486:10.1017/CBO9780511546716.004 110:{\displaystyle \mathbb {N} } 560: 446:McLeod, Jillian (2000). 461:(Summer 2000): 317–332. 521:10.1006/jcta.2000.3061 429:Piecewise syndetic set 408: 380: 294: 293:{\displaystyle p=p(S)} 256: 236: 169: 111: 89: 65: 424:Ergodic Ramsey theory 409: 381: 295: 257: 237: 170: 112: 90: 66: 455:Topology Proceedings 390: 304: 269: 246: 182: 123: 99: 79: 47: 404: 376: 290: 252: 232: 165: 141: 107: 85: 61: 494:Bergelson, Vitaly 467:Bergelson, Vitaly 255:{\displaystyle S} 126: 88:{\displaystyle F} 551: 539:Semigroup theory 525: 523: 489: 475: 462: 452: 413: 411: 410: 405: 403: 385: 383: 382: 377: 299: 297: 296: 291: 261: 259: 258: 253: 241: 239: 238: 233: 210: 174: 172: 171: 166: 164: 140: 116: 114: 113: 108: 106: 94: 92: 91: 86: 70: 68: 67: 62: 60: 559: 558: 554: 553: 552: 550: 549: 548: 529: 528: 492: 473: 465: 450: 445: 442: 420: 388: 387: 302: 301: 267: 266: 244: 243: 180: 179: 121: 120: 97: 96: 77: 76: 45: 44: 41: 33:natural numbers 17: 12: 11: 5: 557: 555: 547: 546: 544:Ergodic theory 541: 531: 530: 527: 526: 490: 463: 441: 438: 437: 436: 431: 426: 419: 416: 402: 398: 395: 375: 372: 369: 366: 363: 360: 357: 354: 351: 348: 345: 342: 339: 336: 333: 330: 327: 324: 321: 318: 315: 312: 309: 289: 286: 283: 280: 277: 274: 262:, there is an 251: 231: 228: 225: 222: 219: 216: 213: 209: 205: 202: 199: 196: 193: 190: 187: 176: 175: 163: 159: 156: 153: 150: 147: 144: 139: 136: 133: 129: 105: 84: 59: 55: 52: 40: 37: 15: 13: 10: 9: 6: 4: 3: 2: 556: 545: 542: 540: 537: 536: 534: 522: 517: 513: 509: 508: 503: 499: 498:Hindman, Neil 495: 491: 487: 483: 479: 472: 468: 464: 460: 456: 449: 444: 443: 439: 435: 432: 430: 427: 425: 422: 421: 417: 415: 396: 393: 370: 367: 364: 358: 355: 352: 349: 346: 343: 340: 337: 334: 331: 328: 325: 322: 319: 316: 313: 310: 284: 278: 275: 272: 265: 249: 226: 223: 220: 217: 214: 211: 203: 200: 194: 191: 188: 185: 157: 151: 148: 145: 137: 134: 131: 127: 119: 118: 117: 82: 74: 53: 50: 38: 36: 34: 30: 26: 22: 514:(1): 18–36. 511: 510:. Series A. 505: 477: 458: 454: 177: 42: 25:syndetic set 24: 18: 21:mathematics 533:Categories 440:References 300:such that 39:Definition 434:Thick set 397:∈ 374:∅ 371:≠ 365:⋂ 224:∈ 204:∈ 189:− 149:− 135:∈ 128:⋃ 54:⊂ 500:(2001). 469:(2003). 418:See also 386:for any 264:integer 75:subset 31:of the 178:where 73:finite 43:A set 29:subset 474:(PDF) 451:(PDF) 27:is a 23:, a 516:doi 482:doi 95:of 19:In 535:: 512:93 504:. 496:; 476:. 459:25 457:. 453:. 414:. 524:. 518:: 488:. 484:: 401:N 394:a 368:S 362:] 359:p 356:+ 353:a 350:, 347:. 344:. 341:. 338:, 335:2 332:+ 329:a 326:, 323:1 320:+ 317:a 314:, 311:a 308:[ 288:) 285:S 282:( 279:p 276:= 273:p 250:S 230:} 227:S 221:n 218:+ 215:m 212:: 208:N 201:m 198:{ 195:= 192:n 186:S 162:N 158:= 155:) 152:n 146:S 143:( 138:F 132:n 104:N 83:F 58:N 51:S

Index

mathematics
subset
natural numbers
finite
integer
Ergodic Ramsey theory
Piecewise syndetic set
Thick set
"Some Notions of Size in Partial Semigroups"
Bergelson, Vitaly
"Minimal Idempotents and Ergodic Ramsey Theory"
doi
10.1017/CBO9780511546716.004
Bergelson, Vitaly
Hindman, Neil
"Partition regular structures contained in large sets are abundant"
Journal of Combinatorial Theory
doi
10.1006/jcta.2000.3061
Categories
Semigroup theory
Ergodic theory

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