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Mirrors > Home > MPE Home > Th. List > mamufv | Structured version Visualization version GIF version |
Description: A cell in the multiplication of two matrices. (Contributed by Stefan O'Rear, 2-Sep-2015.) |
Ref | Expression |
---|---|
mamufval.f | ⊢ 𝐹 = (𝑅 maMul 〈𝑀, 𝑁, 𝑃〉) |
mamufval.b | ⊢ 𝐵 = (Base‘𝑅) |
mamufval.t | ⊢ · = (.r‘𝑅) |
mamufval.r | ⊢ (𝜑 → 𝑅 ∈ 𝑉) |
mamufval.m | ⊢ (𝜑 → 𝑀 ∈ Fin) |
mamufval.n | ⊢ (𝜑 → 𝑁 ∈ Fin) |
mamufval.p | ⊢ (𝜑 → 𝑃 ∈ Fin) |
mamuval.x | ⊢ (𝜑 → 𝑋 ∈ (𝐵 ↑m (𝑀 × 𝑁))) |
mamuval.y | ⊢ (𝜑 → 𝑌 ∈ (𝐵 ↑m (𝑁 × 𝑃))) |
mamufv.i | ⊢ (𝜑 → 𝐼 ∈ 𝑀) |
mamufv.k | ⊢ (𝜑 → 𝐾 ∈ 𝑃) |
Ref | Expression |
---|---|
mamufv | ⊢ (𝜑 → (𝐼(𝑋𝐹𝑌)𝐾) = (𝑅 Σg (𝑗 ∈ 𝑁 ↦ ((𝐼𝑋𝑗) · (𝑗𝑌𝐾))))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mamufval.f | . . 3 ⊢ 𝐹 = (𝑅 maMul 〈𝑀, 𝑁, 𝑃〉) | |
2 | mamufval.b | . . 3 ⊢ 𝐵 = (Base‘𝑅) | |
3 | mamufval.t | . . 3 ⊢ · = (.r‘𝑅) | |
4 | mamufval.r | . . 3 ⊢ (𝜑 → 𝑅 ∈ 𝑉) | |
5 | mamufval.m | . . 3 ⊢ (𝜑 → 𝑀 ∈ Fin) | |
6 | mamufval.n | . . 3 ⊢ (𝜑 → 𝑁 ∈ Fin) | |
7 | mamufval.p | . . 3 ⊢ (𝜑 → 𝑃 ∈ Fin) | |
8 | mamuval.x | . . 3 ⊢ (𝜑 → 𝑋 ∈ (𝐵 ↑m (𝑀 × 𝑁))) | |
9 | mamuval.y | . . 3 ⊢ (𝜑 → 𝑌 ∈ (𝐵 ↑m (𝑁 × 𝑃))) | |
10 | 1, 2, 3, 4, 5, 6, 7, 8, 9 | mamuval 21314 | . 2 ⊢ (𝜑 → (𝑋𝐹𝑌) = (𝑖 ∈ 𝑀, 𝑘 ∈ 𝑃 ↦ (𝑅 Σg (𝑗 ∈ 𝑁 ↦ ((𝑖𝑋𝑗) · (𝑗𝑌𝑘)))))) |
11 | oveq1 7241 | . . . . . 6 ⊢ (𝑖 = 𝐼 → (𝑖𝑋𝑗) = (𝐼𝑋𝑗)) | |
12 | oveq2 7242 | . . . . . 6 ⊢ (𝑘 = 𝐾 → (𝑗𝑌𝑘) = (𝑗𝑌𝐾)) | |
13 | 11, 12 | oveqan12d 7253 | . . . . 5 ⊢ ((𝑖 = 𝐼 ∧ 𝑘 = 𝐾) → ((𝑖𝑋𝑗) · (𝑗𝑌𝑘)) = ((𝐼𝑋𝑗) · (𝑗𝑌𝐾))) |
14 | 13 | adantl 485 | . . . 4 ⊢ ((𝜑 ∧ (𝑖 = 𝐼 ∧ 𝑘 = 𝐾)) → ((𝑖𝑋𝑗) · (𝑗𝑌𝑘)) = ((𝐼𝑋𝑗) · (𝑗𝑌𝐾))) |
15 | 14 | mpteq2dv 5167 | . . 3 ⊢ ((𝜑 ∧ (𝑖 = 𝐼 ∧ 𝑘 = 𝐾)) → (𝑗 ∈ 𝑁 ↦ ((𝑖𝑋𝑗) · (𝑗𝑌𝑘))) = (𝑗 ∈ 𝑁 ↦ ((𝐼𝑋𝑗) · (𝑗𝑌𝐾)))) |
16 | 15 | oveq2d 7250 | . 2 ⊢ ((𝜑 ∧ (𝑖 = 𝐼 ∧ 𝑘 = 𝐾)) → (𝑅 Σg (𝑗 ∈ 𝑁 ↦ ((𝑖𝑋𝑗) · (𝑗𝑌𝑘)))) = (𝑅 Σg (𝑗 ∈ 𝑁 ↦ ((𝐼𝑋𝑗) · (𝑗𝑌𝐾))))) |
17 | mamufv.i | . 2 ⊢ (𝜑 → 𝐼 ∈ 𝑀) | |
18 | mamufv.k | . 2 ⊢ (𝜑 → 𝐾 ∈ 𝑃) | |
19 | ovexd 7269 | . 2 ⊢ (𝜑 → (𝑅 Σg (𝑗 ∈ 𝑁 ↦ ((𝐼𝑋𝑗) · (𝑗𝑌𝐾)))) ∈ V) | |
20 | 10, 16, 17, 18, 19 | ovmpod 7382 | 1 ⊢ (𝜑 → (𝐼(𝑋𝐹𝑌)𝐾) = (𝑅 Σg (𝑗 ∈ 𝑁 ↦ ((𝐼𝑋𝑗) · (𝑗𝑌𝐾))))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 399 = wceq 1543 ∈ wcel 2112 Vcvv 3422 〈cotp 4565 ↦ cmpt 5151 × cxp 5566 ‘cfv 6400 (class class class)co 7234 ↑m cmap 8531 Fincfn 8649 Basecbs 16790 .rcmulr 16833 Σg cgsu 16975 maMul cmmul 21311 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2710 ax-rep 5195 ax-sep 5208 ax-nul 5215 ax-pow 5274 ax-pr 5338 ax-un 7544 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2818 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3711 df-csb 3828 df-dif 3885 df-un 3887 df-in 3889 df-ss 3899 df-nul 4254 df-if 4456 df-pw 4531 df-sn 4558 df-pr 4560 df-op 4564 df-ot 4566 df-uni 4836 df-iun 4922 df-br 5070 df-opab 5132 df-mpt 5152 df-id 5471 df-xp 5574 df-rel 5575 df-cnv 5576 df-co 5577 df-dm 5578 df-rn 5579 df-res 5580 df-ima 5581 df-iota 6358 df-fun 6402 df-fn 6403 df-f 6404 df-f1 6405 df-fo 6406 df-f1o 6407 df-fv 6408 df-ov 7237 df-oprab 7238 df-mpo 7239 df-1st 7782 df-2nd 7783 df-mamu 21312 |
This theorem is referenced by: mamuass 21328 mamudi 21329 mamudir 21330 mamuvs1 21331 mamuvs2 21332 mamulid 21367 mamurid 21368 matmulcell 21371 mavmulass 21475 mvmumamul1 21480 mdetmul 21549 decpmatmullem 21697 matunitlindflem2 35543 |
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