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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 7456 | . . . 4 ⊢ (𝑅 freeLMod (𝑁 × 𝑁)) ∈ V | |
| 2 | matmulr.t | . . . . 5 ⊢ · = (𝑅 maMul 〈𝑁, 𝑁, 𝑁〉) | |
| 3 | 2 | ovexi 7457 | . . . 4 ⊢ · ∈ V |
| 4 | 1, 3 | pm3.2i 476 | . . 3 ⊢ ((𝑅 freeLMod (𝑁 × 𝑁)) ∈ V ∧ · ∈ V) |
| 5 | mulridx 17373 | . . . 4 ⊢ .r = Slot (.r‘ndx) | |
| 6 | 5 | setsid 17292 | . . 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 2766 | . . . 4 ⊢ (𝑅 freeLMod (𝑁 × 𝑁)) = (𝑅 freeLMod (𝑁 × 𝑁)) | |
| 10 | 8, 9, 2 | matval 22605 | . . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ 𝑉) → 𝐴 = ((𝑅 freeLMod (𝑁 × 𝑁)) sSet 〈(.r‘ndx), · 〉)) |
| 11 | 10 | fveq2d 6892 | . 2 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ 𝑉) → (.r‘𝐴) = (.r‘((𝑅 freeLMod (𝑁 × 𝑁)) sSet 〈(.r‘ndx), · 〉))) |
| 12 | 7, 11 | eqtr4d 2804 | 1 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ 𝑉) → · = (.r‘𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2146 Vcvv 3458 〈cop 4600 〈cotp 4602 × cxp 5664 ‘cfv 6543 (class class class)co 7423 Fincfn 8952 sSet csts 17248 ndxcnx 17278 .rcmulr 17336 freeLMod cfrlm 21933 maMul cmmul 22584 Mat cmat 22601 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-cnex 11174 ax-1cn 11176 ax-addcl 11178 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-ral 3083 df-rex 3093 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-ot 4603 df-uni 4878 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-we 5621 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-pred 6309 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-ov 7426 df-oprab 7427 df-mpo 7428 df-om 7872 df-2nd 7996 df-frecs 8287 df-wrecs 8318 df-recs 8367 df-rdg 8406 df-nn 12252 df-2 12321 df-3 12322 df-sets 17249 df-slot 17267 df-ndx 17279 df-mulr 17349 df-mat 22602 |
| This theorem is used by: matring 22637 matassa 22638 matmulcell 22639 mpomatmul 22640 mat1 22641 mattposm 22653 mat1dimmul 22670 dmatmul 22691 mdetmul 22817 madurid 22838 slesolinv 22874 slesolinvbi 22875 cramerimplem3 22879 mat2pmatmul 22925 decpmatmullem 22965 decpmatmul 22966 matunitlindflem2 38309 |
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