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Category of modules

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for the category of modules. This term can be ambiguous since it could also refer to a category with a
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but that category is equivalent to the category of left (or right) modules over the
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also has enough injectives (though not always enough projectives).
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trivially since any module is a quotient of a free module.
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One can also define the category of bimodules over a ring
441:(the important invariant of the category of modules.) 227:of the category of modules over a commutative ring 165:exist in the categories of left and right modules. 679: 250:-mod is exactly a finitely presented module). 662: 135:The categories of left and right modules are 253: 583:. Vol. 5 (second ed.). Springer. 405:which has as its objects the vector spaces 155:of the category of modules over some ring. 669: 655: 151:states every abelian category arises as a 577:Categories for the Working Mathematician 571: 562: 525: 302:as morphisms. Since vector spaces over 14: 680: 621: 553: 537: 187: 363:dimension theorem for vector spaces 306:(as a field) are the same thing as 24: 416: 25: 709: 606: 625: 613:http://ncatlab.org/nlab/show/Mod 460:Category of graded vector spaces 191: 176:⊗, the category of modules is a 111:(or over the opposite of that). 563:Dummit, David; Foote, Richard. 547: 554:Bourbaki. "Algèbre linéaire". 531: 519: 510: 492: 88:, it is the same thing as the 13: 1: 688:Categories in category theory 581:Graduate Texts in Mathematics 485: 130: 96:is defined in a similar way. 641:. You can help Knowledge by 353:concerns the description of 149:Mitchell's embedding theorem 77:-modules. For example, when 7: 470:Category of representations 432: 178:symmetric monoidal category 10: 714: 620: 465:Category of abelian groups 377:correspond exactly to the 257: 183: 117:Some authors use the term 90:category of abelian groups 500:"module category in nLab" 254:Category of vector spaces 246:(a compact object in the 174:tensor product of modules 94:category of right modules 413:is any cardinal number. 342:), the category of left 139:. These categories have 125:monoidal-category action 43:category of left modules 27:Category in mathematics 637:-related article is a 528:, Ch. 10, Theorem 38. 325:is a special case of 698:Linear algebra stubs 172:, together with the 71:module homomorphisms 367:isomorphism classes 361:. For example, the 233:associative algebra 575:(September 1998). 573:Mac Lane, Saunders 526:Dummit & Foote 480:Morita equivalence 439:Algebraic K-theory 423:sheaves of modules 333:(some authors use 275:(some authors use 203:. You can help by 141:enough projectives 137:abelian categories 105:enveloping algebra 650: 649: 445:Category of rings 221: 220: 159:Projective limits 145:enough injectives 16:(Redirected from 705: 671: 664: 657: 629: 622: 602: 568: 565:Abstract Algebra 559: 541: 535: 529: 523: 517: 514: 508: 507: 496: 450:Derived category 421:The category of 379:cardinal numbers 295:as objects, and 216: 213: 195: 188: 170:commutative ring 163:inductive limits 153:full subcategory 21: 713: 712: 708: 707: 706: 704: 703: 702: 678: 677: 676: 675: 618: 609: 591: 550: 545: 544: 536: 532: 524: 520: 515: 511: 498: 497: 493: 488: 475:Change of rings 455:Module spectrum 435: 419: 417:Generalizations 341: 283: 262: 256: 217: 211: 208: 201:needs expansion 186: 133: 120:module category 81:is the ring of 28: 23: 22: 18:Module category 15: 12: 11: 5: 711: 701: 700: 695: 693:Linear algebra 690: 674: 673: 666: 659: 651: 648: 647: 635:linear algebra 630: 616: 615: 608: 607:External links 605: 604: 603: 589: 569: 560: 549: 546: 543: 542: 530: 518: 509: 490: 489: 487: 484: 483: 482: 477: 472: 467: 462: 457: 452: 447: 442: 434: 431: 418: 415: 365:says that the 351:linear algebra 337: 279: 255: 252: 244:compact object 231:is exactly an 219: 218: 198: 196: 185: 182: 132: 129: 26: 9: 6: 4: 3: 2: 710: 699: 696: 694: 691: 689: 686: 685: 683: 672: 667: 665: 660: 658: 653: 652: 646: 644: 640: 636: 631: 628: 624: 623: 619: 614: 611: 610: 600: 596: 592: 590:0-387-98403-8 586: 582: 578: 574: 570: 566: 561: 557: 552: 551: 539: 534: 527: 522: 513: 505: 501: 495: 491: 481: 478: 476: 473: 471: 468: 466: 463: 461: 458: 456: 453: 451: 448: 446: 443: 440: 437: 436: 430: 428: 424: 414: 412: 408: 404: 400: 396: 392: 388: 384: 380: 376: 372: 368: 364: 360: 356: 352: 347: 345: 340: 336: 332: 328: 324: 320: 316: 313: 309: 305: 301: 299: 294: 291: 287: 286:vector spaces 282: 278: 274: 270: 267: 261: 251: 249: 245: 240: 238: 234: 230: 226: 225:monoid object 215: 206: 202: 199:This section 197: 194: 190: 189: 181: 179: 175: 171: 166: 164: 160: 156: 154: 150: 146: 142: 138: 128: 126: 122: 121: 116: 112: 110: 106: 102: 97: 95: 91: 87: 84: 80: 76: 73:between left 72: 68: 64: 60: 57:are all left 56: 52: 48: 44: 40: 37: 33: 19: 643:expanding it 632: 617: 576: 564: 555: 548:Bibliography 533: 521: 512: 503: 494: 427:ringed space 420: 410: 406: 402: 398: 386: 382: 374: 370: 358: 354: 348: 343: 338: 334: 330: 326: 322: 318: 314: 303: 300:-linear maps 297: 292: 280: 276: 272: 268: 263: 247: 241: 236: 228: 222: 209: 205:adding to it 200: 167: 157: 134: 118: 114: 113: 108: 100: 98: 93: 85: 78: 74: 62: 46: 42: 38: 29: 504:ncatlab.org 395:subcategory 381:, and that 682:Categories 599:0906.18001 486:References 391:equivalent 346:-modules. 284:) has all 258:See also: 242:See also: 212:March 2023 131:Properties 65:and whose 34:, given a 310:over the 67:morphisms 538:Bourbaki 433:See also 409:, where 349:Much of 266:category 83:integers 69:are all 51:category 556:Algèbre 425:over a 393:to the 308:modules 288:over a 260:FinVect 184:Objects 168:Over a 59:modules 55:objects 49:is the 32:algebra 597:  587:  540:, § 6. 92:. The 53:whose 41:, the 633:This 290:field 235:over 115:Note: 61:over 45:over 639:stub 585:ISBN 403:Vect 387:Vect 375:Vect 359:Vect 323:Vect 312:ring 277:Vect 273:Vect 264:The 161:and 143:and 36:ring 595:Zbl 397:of 389:is 369:in 335:Mod 331:Mod 207:. 107:of 30:In 684:: 593:. 579:. 502:. 317:, 239:. 223:A 180:. 147:. 127:. 670:e 663:t 656:v 645:. 601:. 567:. 558:. 506:. 411:n 407:K 401:- 399:K 385:- 383:K 373:- 371:K 357:- 355:K 344:R 339:R 329:- 327:R 321:- 319:K 315:K 304:K 298:K 293:K 281:K 271:- 269:K 248:R 237:R 229:R 214:) 210:( 109:R 101:R 86:Z 79:R 75:R 63:R 47:R 39:R 20:)

Index

Module category
algebra
ring
category
objects
modules
morphisms
module homomorphisms
integers
category of abelian groups
enveloping algebra
module category
monoidal-category action
abelian categories
enough projectives
enough injectives
Mitchell's embedding theorem
full subcategory
Projective limits
inductive limits
commutative ring
tensor product of modules
symmetric monoidal category

adding to it
monoid object
associative algebra
compact object
FinVect
category

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