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Locally cyclic group

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22: 367: 263: 51: 553: 491: 73: 388:. The Prüfer 2-group is closely related to the dyadic rationals (it can be viewed as the dyadic rationals modulo 1). 44: 362:{\displaystyle \mu _{p^{\infty }}=\left\{\exp \left({\frac {2\pi im}{p^{k}}}\right):m,k\in \mathbb {Z} \right\}} 507: 578: 573: 479: 95: 139:
A group is locally cyclic if and only if every pair of elements in the group generates a cyclic group.
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Every cyclic group is locally cyclic, and every locally cyclic group is
122: 222:/2, is also locally cyclic – any pair of dyadic rational numbers 482:(1999), "19.2 Locally Cyclic Groups and Distributive Lattices", 230:/2 is contained in the cyclic subgroup generated by 1/2. 118:
Every finitely-generated locally cyclic group is cyclic.
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Examples of abelian groups that are not locally cyclic
191:, +) is locally cyclic – any pair of rational numbers 266: 177:
Examples of locally cyclic groups that are not cyclic
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is contained in the cyclic subgroup generated by 1/(
486:, American Mathematical Society, pp. 340–341, 361: 136:image of a locally cyclic group is locally cyclic. 460: 448: 565: 43:but its sources remain unclear because it lacks 380:is locally cyclic but not cyclic. This is the 142:A group is locally cyclic if and only if its 129:of a locally cyclic group is locally cyclic. 350: 74:Learn how and when to remove this message 566: 407:, +); the subgroup generated by 1 and 543: 478: 466: 454: 411:(comprising all numbers of the form 161:of a locally cyclic group is 0 or 1. 15: 502: 218:, the rational numbers of the form 151: 13: 277: 14: 590: 508:"Structures and group theory. II" 20: 1: 527:10.1215/S0012-7094-38-00419-3 441: 168:of a locally cyclic group is 105: 7: 96:finitely generated subgroup 10: 595: 214:The additive group of the 515:Duke Mathematical Journal 546:A Course on Group Theory 29:This article includes a 544:Rose, John S. (2012) . 216:dyadic rational numbers 58:more precise citations. 548:. Dover Publications. 437:, which is not cyclic. 399:The additive group of 363: 246:denote the set of all 237:be any prime, and let 183:The additive group of 364: 579:Properties of groups 574:Abelian group theory 264: 144:lattice of subgroups 94:, *) in which every 88:locally cyclic group 480:Hall, Marshall Jr. 359: 86:In mathematics, a 31:list of references 555:978-0-486-68194-8 493:978-0-8218-1967-8 328: 166:endomorphism ring 159:torsion-free rank 84: 83: 76: 586: 559: 537: 512: 496: 484:Theory of Groups 470: 464: 458: 452: 421: 410: 368: 366: 365: 360: 358: 354: 353: 333: 329: 327: 326: 317: 303: 283: 282: 281: 280: 185:rational numbers 79: 72: 68: 65: 59: 54:this article by 45:inline citations 24: 23: 16: 594: 593: 589: 588: 587: 585: 584: 583: 564: 563: 562: 556: 510: 494: 474: 473: 465: 461: 453: 449: 444: 419: 408: 396: 391: 379: 349: 322: 318: 304: 302: 298: 291: 287: 276: 272: 271: 267: 265: 262: 261: 245: 179: 108: 80: 69: 63: 60: 49: 35:related reading 25: 21: 12: 11: 5: 592: 582: 581: 576: 561: 560: 554: 540: 539: 521:(2): 247–269, 499: 498: 492: 475: 472: 471: 459: 446: 445: 443: 440: 439: 438: 395: 392: 390: 389: 375: 370: 369: 357: 352: 348: 345: 342: 339: 336: 332: 325: 321: 316: 313: 310: 307: 301: 297: 294: 290: 286: 279: 275: 270: 252:roots of unity 241: 231: 212: 180: 178: 175: 174: 173: 162: 155: 140: 137: 130: 127:quotient group 119: 116: 107: 104: 82: 81: 39:external links 28: 26: 19: 9: 6: 4: 3: 2: 591: 580: 577: 575: 572: 571: 569: 557: 551: 547: 542: 541: 536: 532: 528: 524: 520: 516: 509: 505: 501: 500: 495: 489: 485: 481: 477: 476: 469:, p. 52. 468: 463: 457:, p. 54. 456: 451: 447: 436: 432: 429: 425: 418: 415: +  414: 406: 402: 398: 397: 387: 385: 378: 374: 355: 346: 343: 340: 337: 334: 330: 323: 319: 314: 311: 308: 305: 299: 295: 292: 288: 284: 273: 268: 260: 259: 257: 253: 249: 244: 240: 236: 232: 229: 225: 221: 217: 213: 210: 206: 202: 198: 194: 190: 186: 182: 181: 171: 167: 163: 160: 156: 153: 149: 145: 141: 138: 135: 131: 128: 124: 120: 117: 114: 110: 109: 103: 101: 97: 93: 89: 78: 75: 67: 57: 53: 47: 46: 40: 36: 32: 27: 18: 17: 545: 518: 514: 504:Ore, Øystein 483: 462: 450: 434: 430: 416: 412: 404: 401:real numbers 383: 376: 372: 255: 247: 242: 238: 234: 227: 223: 219: 208: 204: 200: 196: 192: 188: 148:distributive 91: 90:is a group ( 87: 85: 70: 61: 50:Please help 42: 467:Rose (2012) 455:Rose (2012) 170:commutative 134:homomorphic 56:introducing 568:Categories 442:References 428:direct sum 424:isomorphic 106:Some facts 347:∈ 309:π 296:⁡ 278:∞ 269:μ 250:th-power 64:June 2015 506:(1938), 152:Ore 1938 123:subgroup 535:1546048 426:to the 382:Prüfer 258:, i.e. 226:/2 and 113:abelian 52:improve 552:  533:  490:  386:-group 373:μ 132:Every 121:Every 100:cyclic 511:(PDF) 422:) is 371:Then 37:, or 550:ISBN 488:ISBN 233:Let 199:and 164:The 157:The 125:and 523:doi 293:exp 254:in 146:is 98:is 570:: 531:MR 529:, 517:, 513:, 433:+ 211:). 209:bd 154:). 102:. 41:, 33:, 558:. 538:. 525:: 519:4 497:. 435:Z 431:Z 420:π 417:b 413:a 409:π 405:R 403:( 384:p 377:p 356:} 351:Z 344:k 341:, 338:m 335:: 331:) 324:k 320:p 315:m 312:i 306:2 300:( 289:{ 285:= 274:p 256:C 248:p 243:p 239:μ 235:p 228:c 224:a 220:a 205:d 203:/ 201:c 197:b 195:/ 193:a 189:Q 187:( 172:. 150:( 115:. 92:G 77:) 71:( 66:) 62:( 48:.

Index

list of references
related reading
external links
inline citations
improve
introducing
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finitely generated subgroup
cyclic
abelian
subgroup
quotient group
homomorphic
lattice of subgroups
distributive
Ore 1938
torsion-free rank
endomorphism ring
commutative
rational numbers
dyadic rational numbers
roots of unity
Prüfer p-group
real numbers
isomorphic
direct sum
Rose (2012)
Rose (2012)
Hall, Marshall Jr.
ISBN

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