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Mirrors > Home > MPE Home > Th. List > matsc | Structured version Visualization version GIF version |
Description: The identity matrix multiplied with a scalar. (Contributed by Stefan O'Rear, 16-Jul-2018.) |
Ref | Expression |
---|---|
matsc.a | ⊢ 𝐴 = (𝑁 Mat 𝑅) |
matsc.k | ⊢ 𝐾 = (Base‘𝑅) |
matsc.m | ⊢ · = ( ·𝑠 ‘𝐴) |
matsc.z | ⊢ 0 = (0g‘𝑅) |
Ref | Expression |
---|---|
matsc | ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿 · (1r‘𝐴)) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ if(𝑖 = 𝑗, 𝐿, 0 ))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simp3 1136 | . . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → 𝐿 ∈ 𝐾) | |
2 | 3simpa 1146 | . . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝑁 ∈ Fin ∧ 𝑅 ∈ Ring)) | |
3 | matsc.a | . . . . 5 ⊢ 𝐴 = (𝑁 Mat 𝑅) | |
4 | 3 | matring 21500 | . . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) → 𝐴 ∈ Ring) |
5 | eqid 2738 | . . . . 5 ⊢ (Base‘𝐴) = (Base‘𝐴) | |
6 | eqid 2738 | . . . . 5 ⊢ (1r‘𝐴) = (1r‘𝐴) | |
7 | 5, 6 | ringidcl 19722 | . . . 4 ⊢ (𝐴 ∈ Ring → (1r‘𝐴) ∈ (Base‘𝐴)) |
8 | 2, 4, 7 | 3syl 18 | . . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (1r‘𝐴) ∈ (Base‘𝐴)) |
9 | matsc.k | . . . 4 ⊢ 𝐾 = (Base‘𝑅) | |
10 | matsc.m | . . . 4 ⊢ · = ( ·𝑠 ‘𝐴) | |
11 | eqid 2738 | . . . 4 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
12 | eqid 2738 | . . . 4 ⊢ (𝑁 × 𝑁) = (𝑁 × 𝑁) | |
13 | 3, 5, 9, 10, 11, 12 | matvsca2 21485 | . . 3 ⊢ ((𝐿 ∈ 𝐾 ∧ (1r‘𝐴) ∈ (Base‘𝐴)) → (𝐿 · (1r‘𝐴)) = (((𝑁 × 𝑁) × {𝐿}) ∘f (.r‘𝑅)(1r‘𝐴))) |
14 | 1, 8, 13 | syl2anc 583 | . 2 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿 · (1r‘𝐴)) = (((𝑁 × 𝑁) × {𝐿}) ∘f (.r‘𝑅)(1r‘𝐴))) |
15 | simp1 1134 | . . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → 𝑁 ∈ Fin) | |
16 | simp13 1203 | . . 3 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) ∧ 𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → 𝐿 ∈ 𝐾) | |
17 | fvex 6769 | . . . . 5 ⊢ (1r‘𝑅) ∈ V | |
18 | matsc.z | . . . . . 6 ⊢ 0 = (0g‘𝑅) | |
19 | 18 | fvexi 6770 | . . . . 5 ⊢ 0 ∈ V |
20 | 17, 19 | ifex 4506 | . . . 4 ⊢ if(𝑖 = 𝑗, (1r‘𝑅), 0 ) ∈ V |
21 | 20 | a1i 11 | . . 3 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) ∧ 𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → if(𝑖 = 𝑗, (1r‘𝑅), 0 ) ∈ V) |
22 | fconstmpo 7369 | . . . 4 ⊢ ((𝑁 × 𝑁) × {𝐿}) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝐿) | |
23 | 22 | a1i 11 | . . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → ((𝑁 × 𝑁) × {𝐿}) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ 𝐿)) |
24 | eqid 2738 | . . . . 5 ⊢ (1r‘𝑅) = (1r‘𝑅) | |
25 | 3, 24, 18 | mat1 21504 | . . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) → (1r‘𝐴) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ if(𝑖 = 𝑗, (1r‘𝑅), 0 ))) |
26 | 25 | 3adant3 1130 | . . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (1r‘𝐴) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ if(𝑖 = 𝑗, (1r‘𝑅), 0 ))) |
27 | 15, 15, 16, 21, 23, 26 | offval22 7899 | . 2 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (((𝑁 × 𝑁) × {𝐿}) ∘f (.r‘𝑅)(1r‘𝐴)) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ (𝐿(.r‘𝑅)if(𝑖 = 𝑗, (1r‘𝑅), 0 )))) |
28 | ovif2 7351 | . . . 4 ⊢ (𝐿(.r‘𝑅)if(𝑖 = 𝑗, (1r‘𝑅), 0 )) = if(𝑖 = 𝑗, (𝐿(.r‘𝑅)(1r‘𝑅)), (𝐿(.r‘𝑅) 0 )) | |
29 | 9, 11, 24 | ringridm 19726 | . . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿(.r‘𝑅)(1r‘𝑅)) = 𝐿) |
30 | 29 | 3adant1 1128 | . . . . 5 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿(.r‘𝑅)(1r‘𝑅)) = 𝐿) |
31 | 9, 11, 18 | ringrz 19742 | . . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿(.r‘𝑅) 0 ) = 0 ) |
32 | 31 | 3adant1 1128 | . . . . 5 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿(.r‘𝑅) 0 ) = 0 ) |
33 | 30, 32 | ifeq12d 4477 | . . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → if(𝑖 = 𝑗, (𝐿(.r‘𝑅)(1r‘𝑅)), (𝐿(.r‘𝑅) 0 )) = if(𝑖 = 𝑗, 𝐿, 0 )) |
34 | 28, 33 | eqtrid 2790 | . . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿(.r‘𝑅)if(𝑖 = 𝑗, (1r‘𝑅), 0 )) = if(𝑖 = 𝑗, 𝐿, 0 )) |
35 | 34 | mpoeq3dv 7332 | . 2 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ (𝐿(.r‘𝑅)if(𝑖 = 𝑗, (1r‘𝑅), 0 ))) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ if(𝑖 = 𝑗, 𝐿, 0 ))) |
36 | 14, 27, 35 | 3eqtrd 2782 | 1 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿 · (1r‘𝐴)) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ if(𝑖 = 𝑗, 𝐿, 0 ))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1085 = wceq 1539 ∈ wcel 2108 Vcvv 3422 ifcif 4456 {csn 4558 × cxp 5578 ‘cfv 6418 (class class class)co 7255 ∈ cmpo 7257 ∘f cof 7509 Fincfn 8691 Basecbs 16840 .rcmulr 16889 ·𝑠 cvsca 16892 0gc0g 17067 1rcur 19652 Ringcrg 19698 Mat cmat 21464 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-ot 4567 df-uni 4837 df-int 4877 df-iun 4923 df-iin 4924 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-se 5536 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-isom 6427 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-of 7511 df-om 7688 df-1st 7804 df-2nd 7805 df-supp 7949 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-map 8575 df-ixp 8644 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-fsupp 9059 df-sup 9131 df-oi 9199 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-2 11966 df-3 11967 df-4 11968 df-5 11969 df-6 11970 df-7 11971 df-8 11972 df-9 11973 df-n0 12164 df-z 12250 df-dec 12367 df-uz 12512 df-fz 13169 df-fzo 13312 df-seq 13650 df-hash 13973 df-struct 16776 df-sets 16793 df-slot 16811 df-ndx 16823 df-base 16841 df-ress 16868 df-plusg 16901 df-mulr 16902 df-sca 16904 df-vsca 16905 df-ip 16906 df-tset 16907 df-ple 16908 df-ds 16910 df-hom 16912 df-cco 16913 df-0g 17069 df-gsum 17070 df-prds 17075 df-pws 17077 df-mre 17212 df-mrc 17213 df-acs 17215 df-mgm 18241 df-sgrp 18290 df-mnd 18301 df-mhm 18345 df-submnd 18346 df-grp 18495 df-minusg 18496 df-sbg 18497 df-mulg 18616 df-subg 18667 df-ghm 18747 df-cntz 18838 df-cmn 19303 df-abl 19304 df-mgp 19636 df-ur 19653 df-ring 19700 df-subrg 19937 df-lmod 20040 df-lss 20109 df-sra 20349 df-rgmod 20350 df-dsmm 20849 df-frlm 20864 df-mamu 21443 df-mat 21465 |
This theorem is referenced by: scmatscm 21570 madurid 21701 chmatval 21886 |
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