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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 7396 | . . . 4 ⊢ (𝑅 freeLMod (𝑁 × 𝑁)) ∈ V | |
| 2 | matmulr.t | . . . . 5 ⊢ · = (𝑅 maMul 〈𝑁, 𝑁, 𝑁〉) | |
| 3 | 2 | ovexi 7397 | . . . 4 ⊢ · ∈ V |
| 4 | 1, 3 | pm3.2i 471 | . . 3 ⊢ ((𝑅 freeLMod (𝑁 × 𝑁)) ∈ V ∧ · ∈ V) |
| 5 | mulridx 17256 | . . . 4 ⊢ .r = Slot (.r‘ndx) | |
| 6 | 5 | setsid 17175 | . . 3 ⊢ (((𝑅 freeLMod (𝑁 × 𝑁)) ∈ V ∧ · ∈ V) → · = (.r‘((𝑅 freeLMod (𝑁 × 𝑁)) sSet 〈(.r‘ndx), · 〉))) |
| 7 | 4, 6 | mp1i 13 | . 2 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ 𝑉) → · = (.r‘((𝑅 freeLMod (𝑁 × 𝑁)) sSet 〈(.r‘ndx), · 〉))) |
| 8 | matmulr.a | . . . 4 ⊢ 𝐴 = (𝑁 Mat 𝑅) | |
| 9 | eqid 2740 | . . . 4 ⊢ (𝑅 freeLMod (𝑁 × 𝑁)) = (𝑅 freeLMod (𝑁 × 𝑁)) | |
| 10 | 8, 9, 2 | matval 22401 | . . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ 𝑉) → 𝐴 = ((𝑅 freeLMod (𝑁 × 𝑁)) sSet 〈(.r‘ndx), · 〉)) |
| 11 | 10 | fveq2d 6838 | . 2 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ 𝑉) → (.r‘𝐴) = (.r‘((𝑅 freeLMod (𝑁 × 𝑁)) sSet 〈(.r‘ndx), · 〉))) |
| 12 | 7, 11 | eqtr4d 2778 | 1 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ 𝑉) → · = (.r‘𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 = wceq 1547 ∈ wcel 2119 Vcvv 3432 〈cop 4568 〈cotp 4570 × cxp 5623 ‘cfv 6492 (class class class)co 7363 Fincfn 8890 sSet csts 17131 ndxcnx 17161 .rcmulr 17219 freeLMod cfrlm 21728 maMul cmmul 22380 Mat cmat 22397 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-sep 5225 ax-nul 5235 ax-pow 5301 ax-pr 5369 ax-un 7685 ax-cnex 11092 ax-1cn 11094 ax-addcl 11096 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-ral 3055 df-rex 3065 df-reu 3346 df-rab 3393 df-v 3434 df-sbc 3731 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4269 df-if 4462 df-pw 4538 df-sn 4563 df-pr 4565 df-op 4569 df-ot 4571 df-uni 4846 df-iun 4930 df-br 5080 df-opab 5142 df-mpt 5161 df-tr 5187 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-ov 7366 df-oprab 7367 df-mpo 7368 df-om 7814 df-2nd 7939 df-frecs 8228 df-wrecs 8259 df-recs 8308 df-rdg 8346 df-nn 12173 df-2 12242 df-3 12243 df-sets 17132 df-slot 17150 df-ndx 17162 df-mulr 17232 df-mat 22398 |
| This theorem is referenced by: matring 22433 matassa 22434 matmulcell 22435 mpomatmul 22436 mat1 22437 mattposm 22449 mat1dimmul 22466 dmatmul 22487 mdetmul 22613 madurid 22634 slesolinv 22670 slesolinvbi 22671 cramerimplem3 22675 mat2pmatmul 22721 decpmatmullem 22761 decpmatmul 22762 matunitlindflem2 37991 |
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