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| Mirrors > Home > MPE Home > Th. List > matmulr | Structured version Visualization version GIF version | ||
| Description: Multiplication in the matrix algebra. (Contributed by Stefan O'Rear, 4-Sep-2015.) |
| Ref | Expression |
|---|---|
| matmulr.a | ⊢ 𝐴 = (𝑁 Mat 𝑅) |
| matmulr.t | ⊢ · = (𝑅 maMul 〈𝑁, 𝑁, 𝑁〉) |
| Ref | Expression |
|---|---|
| matmulr | ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ 𝑉) → · = (.r‘𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ovex 7433 | . . . 4 ⊢ (𝑅 freeLMod (𝑁 × 𝑁)) ∈ V | |
| 2 | matmulr.t | . . . . 5 ⊢ · = (𝑅 maMul 〈𝑁, 𝑁, 𝑁〉) | |
| 3 | 2 | ovexi 7434 | . . . 4 ⊢ · ∈ V |
| 4 | 1, 3 | pm3.2i 475 | . . 3 ⊢ ((𝑅 freeLMod (𝑁 × 𝑁)) ∈ V ∧ · ∈ V) |
| 5 | mulridx 17336 | . . . 4 ⊢ .r = Slot (.r‘ndx) | |
| 6 | 5 | setsid 17255 | . . 3 ⊢ (((𝑅 freeLMod (𝑁 × 𝑁)) ∈ V ∧ · ∈ V) → · = (.r‘((𝑅 freeLMod (𝑁 × 𝑁)) sSet 〈(.r‘ndx), · 〉))) |
| 7 | 4, 6 | mp1i 14 | . 2 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ 𝑉) → · = (.r‘((𝑅 freeLMod (𝑁 × 𝑁)) sSet 〈(.r‘ndx), · 〉))) |
| 8 | matmulr.a | . . . 4 ⊢ 𝐴 = (𝑁 Mat 𝑅) | |
| 9 | eqid 2765 | . . . 4 ⊢ (𝑅 freeLMod (𝑁 × 𝑁)) = (𝑅 freeLMod (𝑁 × 𝑁)) | |
| 10 | 8, 9, 2 | matval 22525 | . . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ 𝑉) → 𝐴 = ((𝑅 freeLMod (𝑁 × 𝑁)) sSet 〈(.r‘ndx), · 〉)) |
| 11 | 10 | fveq2d 6875 | . 2 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ 𝑉) → (.r‘𝐴) = (.r‘((𝑅 freeLMod (𝑁 × 𝑁)) sSet 〈(.r‘ndx), · 〉))) |
| 12 | 7, 11 | eqtr4d 2803 | 1 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ 𝑉) → · = (.r‘𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 = wceq 1563 ∈ wcel 2145 Vcvv 3457 〈cop 4591 〈cotp 4593 × cxp 5649 ‘cfv 6525 (class class class)co 7400 Fincfn 8931 sSet csts 17211 ndxcnx 17241 .rcmulr 17299 freeLMod cfrlm 21853 maMul cmmul 22504 Mat cmat 22521 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5250 ax-nul 5260 ax-pow 5326 ax-pr 5394 ax-un 7722 ax-cnex 11144 ax-1cn 11146 ax-addcl 11148 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3080 df-rex 3090 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-ot 4594 df-uni 4868 df-iun 4953 df-br 5105 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6291 df-ord 6352 df-on 6353 df-lim 6354 df-suc 6355 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-ov 7403 df-oprab 7404 df-mpo 7405 df-om 7851 df-2nd 7975 df-frecs 8266 df-wrecs 8297 df-recs 8346 df-rdg 8385 df-nn 12222 df-2 12291 df-3 12292 df-sets 17212 df-slot 17230 df-ndx 17242 df-mulr 17312 df-mat 22522 |
| This theorem is referenced by: matring 22557 matassa 22558 matmulcell 22559 mpomatmul 22560 mat1 22561 mattposm 22573 mat1dimmul 22590 dmatmul 22611 mdetmul 22737 madurid 22758 slesolinv 22794 slesolinvbi 22795 cramerimplem3 22799 mat2pmatmul 22845 decpmatmullem 22885 decpmatmul 22886 matunitlindflem2 38123 |
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