Knowledge (XXG)

Vector multiplication

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quantity. The dot product of two vectors can be defined as the product of the magnitudes of the two vectors and the cosine of the angle between the two vectors. Alternatively, it is defined as the product of the projection of the first vector onto the second vector and the magnitude of the second
282: 122:. The cross product of two vectors in 3-space is defined as the vector perpendicular to the plane determined by the two vectors whose magnitude is the product of the magnitudes of the two vectors and the sine of the angle between the two vectors. So, if 631: 111: 827: 198: 767: 351: 321: 577: 725: 149: 43: 395: 373: 193: 171: 859: 562: 533: 460: 431: 500: 480: 987: 772: 882:
Vector multiplication has multiple applications in regards to mathematics, but also in other studies such as physics and engineering.
963: 992: 736: 658: 326: 296: 277:{\displaystyle \mathbf {a} \times \mathbf {b} =|\mathbf {a} |\,|\mathbf {b} |\sin \theta \,\mathbf {\hat {n}} .} 947: 668: 997: 633:
is a mixed quantity consisting of a scalar plus a bivector. The geometric product is well defined for any
125: 937: 932: 626:{\displaystyle \mathbf {a} \mathbf {b} =\mathbf {a} \cdot \mathbf {b} +\mathbf {a} \wedge \mathbf {b} } 641: 36: 973:
incorrectly led you here, you may wish to change the link to point directly to the intended article.
378: 356: 176: 154: 832: 541: 512: 118:– also known as the "vector product", a binary operation on two vectors that results in another 870: 567: 35:– also known as the "scalar product", a binary operation that takes two vectors and returns a 436: 904: 571: 410: 286: 119: 25: 942: 106:{\displaystyle \mathbf {a} \cdot \mathbf {b} =|\mathbf {a} |\,|\mathbf {b} |\cos \theta } 919: 864: 485: 465: 404: 981: 908: 892: 730: 115: 503: 398: 822:{\displaystyle \mathbf {a} \in \mathbb {R} ^{d},\mathbf {b} \in \mathbb {R} ^{d}} 915: 652: 648: 634: 32: 17: 966:
includes a list of related items that share the same name (or similar names).
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or wedge product – a binary operation on two vectors that results in a
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is the unit vector perpendicular to the plane determined by vectors
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may refer to one of several operations between two (or more)
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exerted on a charged particle moving in a magnetic field.
970: 835: 775: 739: 671: 580: 544: 515: 488: 468: 439: 413: 381: 359: 329: 299: 201: 179: 157: 128: 46: 853: 821: 762:{\displaystyle (\mathbf {a} \otimes \mathbf {b} )} 761: 719: 625: 556: 527: 494: 474: 454: 425: 389: 367: 345: 315: 276: 187: 165: 143: 105: 265: 135: 28:. It may concern any of the following articles: 960:Index of articles associated with the same name 353:(the area of the parallelogram formed by sides 346:{\displaystyle \mathbf {a} \times \mathbf {b} } 316:{\displaystyle \mathbf {a} \wedge \mathbf {b} } 8: 323:has the same magnitude as the cross product 401:and products between more than two vectors. 293:. In Euclidean 3-space, the wedge product 834: 813: 809: 808: 799: 790: 786: 785: 776: 774: 751: 743: 738: 720:{\displaystyle (a\odot b)_{i}=a_{i}b_{i}} 711: 701: 688: 670: 618: 610: 602: 594: 586: 581: 579: 574:– for two vectors, the geometric product 543: 514: 487: 467: 438: 412: 382: 380: 360: 358: 338: 330: 328: 308: 300: 298: 260: 259: 258: 244: 239: 234: 233: 228: 223: 218: 210: 202: 200: 180: 178: 158: 156: 130: 129: 127: 89: 84: 79: 78: 73: 68: 63: 55: 47: 45: 907:. It can also be used to calculate the 661:– entrywise or elementwise product of 7: 867:– products involving three vectors. 144:{\displaystyle \mathbf {\hat {n}} } 895:occurs frequently in the study of 873:– products involving four vectors. 14: 988:Set index articles on mathematics 953: 899:, where it is used to calculate 800: 777: 752: 744: 619: 611: 603: 595: 587: 582: 383: 361: 339: 331: 309: 301: 262: 240: 224: 211: 203: 181: 159: 132: 85: 69: 56: 48: 397:) but generalizes to arbitrary 848: 836: 756: 740: 685: 672: 245: 235: 229: 219: 90: 80: 74: 64: 1: 665:of scalar coordinates, where 390:{\displaystyle \mathbf {b} } 368:{\displaystyle \mathbf {a} } 188:{\displaystyle \mathbf {b} } 166:{\displaystyle \mathbf {a} } 854:{\displaystyle (d\times d)} 1014: 952: 557:{\displaystyle V\otimes W} 528:{\displaystyle v\otimes w} 922:done by a constant force. 918:is used to determine the 640:A bilinear product in an 948:Vector algebra relations 455:{\displaystyle w\in W,} 855: 823: 763: 721: 627: 558: 529: 496: 476: 456: 427: 426:{\displaystyle v\in V} 391: 369: 347: 317: 278: 189: 167: 145: 107: 993:Operations on vectors 938:Matrix multiplication 933:Scalar multiplication 856: 824: 764: 722: 628: 564:of the vector spaces. 559: 530: 497: 477: 457: 428: 392: 370: 348: 318: 279: 190: 168: 146: 108: 22:vector multiplication 833: 773: 737: 669: 642:algebra over a field 578: 542: 513: 486: 466: 437: 411: 379: 357: 327: 297: 199: 177: 155: 126: 44: 871:Quadruple products 851: 819: 759: 717: 623: 554: 525: 492: 472: 452: 423: 407:– for two vectors 387: 365: 343: 313: 274: 185: 163: 141: 103: 964:set index article 651:for vectors in a 568:Geometric product 495:{\displaystyle W} 475:{\displaystyle V} 268: 138: 1005: 974: 957: 905:angular momentum 860: 858: 857: 852: 828: 826: 825: 820: 818: 817: 812: 803: 795: 794: 789: 780: 768: 766: 765: 760: 755: 747: 726: 724: 723: 718: 716: 715: 706: 705: 693: 692: 659:Hadamard product 632: 630: 629: 624: 622: 614: 606: 598: 590: 585: 572:Clifford product 563: 561: 560: 555: 534: 532: 531: 526: 501: 499: 498: 493: 481: 479: 478: 473: 461: 459: 458: 453: 432: 430: 429: 424: 396: 394: 393: 388: 386: 374: 372: 371: 366: 364: 352: 350: 349: 344: 342: 334: 322: 320: 319: 314: 312: 304: 287:Exterior product 283: 281: 280: 275: 270: 269: 261: 248: 243: 238: 232: 227: 222: 214: 206: 194: 192: 191: 186: 184: 172: 170: 169: 164: 162: 150: 148: 147: 142: 140: 139: 131: 112: 110: 109: 104: 93: 88: 83: 77: 72: 67: 59: 51: 1013: 1012: 1008: 1007: 1006: 1004: 1003: 1002: 978: 977: 976: 975: 968: 967: 961: 943:Vector addition 929: 888: 880: 865:Triple products 831: 830: 807: 784: 771: 770: 735: 734: 707: 697: 684: 667: 666: 576: 575: 540: 539: 535:belongs to the 511: 510: 484: 483: 464: 463: 435: 434: 409: 408: 377: 376: 355: 354: 325: 324: 295: 294: 197: 196: 175: 174: 153: 152: 124: 123: 42: 41: 12: 11: 5: 1011: 1009: 1001: 1000: 998:Multiplication 995: 990: 980: 979: 959: 958: 951: 950: 945: 940: 935: 928: 925: 924: 923: 912: 887: 884: 879: 876: 875: 874: 868: 862: 850: 847: 844: 841: 838: 816: 811: 806: 802: 798: 793: 788: 783: 779: 758: 754: 750: 746: 742: 728: 714: 710: 704: 700: 696: 691: 687: 683: 680: 677: 674: 656: 645: 638: 621: 617: 613: 609: 605: 601: 597: 593: 589: 584: 565: 553: 550: 547: 537:tensor product 524: 521: 518: 508:tensor product 491: 471: 451: 448: 445: 442: 422: 419: 416: 405:Tensor product 402: 385: 363: 341: 337: 333: 311: 307: 303: 284: 273: 267: 264: 257: 254: 251: 247: 242: 237: 231: 226: 221: 217: 213: 209: 205: 183: 161: 137: 134: 113: 102: 99: 96: 92: 87: 82: 76: 71: 66: 62: 58: 54: 50: 40:vector. Thus, 13: 10: 9: 6: 4: 3: 2: 1010: 999: 996: 994: 991: 989: 986: 985: 983: 972: 971:internal link 965: 956: 949: 946: 944: 941: 939: 936: 934: 931: 930: 926: 921: 917: 913: 910: 909:Lorentz force 906: 902: 898: 894: 893:cross product 890: 889: 885: 883: 877: 872: 869: 866: 863: 845: 842: 839: 829:results in a 814: 804: 796: 791: 781: 748: 732: 731:Outer product 729: 712: 708: 702: 698: 694: 689: 681: 678: 675: 664: 660: 657: 654: 650: 646: 643: 639: 637:as arguments. 636: 615: 607: 599: 591: 573: 569: 566: 551: 548: 545: 538: 522: 519: 516: 509: 505: 504:vector spaces 489: 469: 449: 446: 443: 440: 420: 417: 414: 406: 403: 400: 399:affine spaces 335: 305: 292: 288: 285: 271: 255: 252: 249: 215: 207: 121: 117: 116:Cross product 114: 100: 97: 94: 60: 52: 38: 34: 31: 30: 29: 27: 23: 19: 881: 878:Applications 635:multivectors 536: 507: 21: 15: 916:dot product 653:Lie algebra 649:Lie bracket 33:Dot product 18:mathematics 982:Categories 843:× 805:∈ 782:∈ 749:⊗ 679:⊙ 616:∧ 600:⋅ 549:⊗ 520:⊗ 444:∈ 418:∈ 336:× 306:∧ 266:^ 256:θ 253:⁡ 208:× 136:^ 101:θ 98:⁡ 53:⋅ 927:See also 897:rotation 733:- where 506:, their 291:bivector 886:Physics 861:matrix. 26:vectors 969:If an 901:torque 663:tuples 462:where 120:vector 37:scalar 962:This 769:with 920:work 914:The 903:and 891:The 502:are 482:and 433:and 375:and 173:and 570:or 250:sin 95:cos 16:In 984:: 647:A 195:, 20:, 849:) 846:d 840:d 837:( 815:d 810:R 801:b 797:, 792:d 787:R 778:a 757:) 753:b 745:a 741:( 727:. 713:i 709:b 703:i 699:a 695:= 690:i 686:) 682:b 676:a 673:( 655:. 644:. 620:b 612:a 608:+ 604:b 596:a 592:= 588:b 583:a 552:W 546:V 523:w 517:v 490:W 470:V 450:, 447:W 441:w 421:V 415:v 384:b 362:a 340:b 332:a 310:b 302:a 272:. 263:n 246:| 241:b 236:| 230:| 225:a 220:| 216:= 212:b 204:a 182:b 160:a 133:n 91:| 86:b 81:| 75:| 70:a 65:| 61:= 57:b 49:a

Index

mathematics
vectors
Dot product
scalar
Cross product
vector
Exterior product
bivector
affine spaces
Tensor product
vector spaces
Geometric product
Clifford product
multivectors
algebra over a field
Lie bracket
Lie algebra
Hadamard product
tuples
Outer product
Triple products
Quadruple products
cross product
rotation
torque
angular momentum
Lorentz force
dot product
work
Scalar multiplication

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