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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 1135 | . . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → 𝐿 ∈ 𝐾) | |
2 | 3simpa 1145 | . . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝑁 ∈ Fin ∧ 𝑅 ∈ Ring)) | |
3 | matsc.a | . . . . 5 ⊢ 𝐴 = (𝑁 Mat 𝑅) | |
4 | 3 | matring 21143 | . . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) → 𝐴 ∈ Ring) |
5 | eqid 2758 | . . . . 5 ⊢ (Base‘𝐴) = (Base‘𝐴) | |
6 | eqid 2758 | . . . . 5 ⊢ (1r‘𝐴) = (1r‘𝐴) | |
7 | 5, 6 | ringidcl 19389 | . . . 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 2758 | . . . 4 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
12 | eqid 2758 | . . . 4 ⊢ (𝑁 × 𝑁) = (𝑁 × 𝑁) | |
13 | 3, 5, 9, 10, 11, 12 | matvsca2 21128 | . . 3 ⊢ ((𝐿 ∈ 𝐾 ∧ (1r‘𝐴) ∈ (Base‘𝐴)) → (𝐿 · (1r‘𝐴)) = (((𝑁 × 𝑁) × {𝐿}) ∘f (.r‘𝑅)(1r‘𝐴))) |
14 | 1, 8, 13 | syl2anc 587 | . 2 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿 · (1r‘𝐴)) = (((𝑁 × 𝑁) × {𝐿}) ∘f (.r‘𝑅)(1r‘𝐴))) |
15 | simp1 1133 | . . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → 𝑁 ∈ Fin) | |
16 | simp13 1202 | . . 3 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) ∧ 𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → 𝐿 ∈ 𝐾) | |
17 | fvex 6671 | . . . . 5 ⊢ (1r‘𝑅) ∈ V | |
18 | matsc.z | . . . . . 6 ⊢ 0 = (0g‘𝑅) | |
19 | 18 | fvexi 6672 | . . . . 5 ⊢ 0 ∈ V |
20 | 17, 19 | ifex 4470 | . . . 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 7263 | . . . 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 2758 | . . . . 5 ⊢ (1r‘𝑅) = (1r‘𝑅) | |
25 | 3, 24, 18 | mat1 21147 | . . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) → (1r‘𝐴) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ if(𝑖 = 𝑗, (1r‘𝑅), 0 ))) |
26 | 25 | 3adant3 1129 | . . 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 7788 | . 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 7246 | . . . 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 19393 | . . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿(.r‘𝑅)(1r‘𝑅)) = 𝐿) |
30 | 29 | 3adant1 1127 | . . . . 5 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿(.r‘𝑅)(1r‘𝑅)) = 𝐿) |
31 | 9, 11, 18 | ringrz 19409 | . . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿(.r‘𝑅) 0 ) = 0 ) |
32 | 31 | 3adant1 1127 | . . . . 5 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿(.r‘𝑅) 0 ) = 0 ) |
33 | 30, 32 | ifeq12d 4441 | . . . 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 | syl5eq 2805 | . . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ 𝐿 ∈ 𝐾) → (𝐿(.r‘𝑅)if(𝑖 = 𝑗, (1r‘𝑅), 0 )) = if(𝑖 = 𝑗, 𝐿, 0 )) |
35 | 34 | mpoeq3dv 7227 | . 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 2797 | 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 399 ∧ w3a 1084 = wceq 1538 ∈ wcel 2111 Vcvv 3409 ifcif 4420 {csn 4522 × cxp 5522 ‘cfv 6335 (class class class)co 7150 ∈ cmpo 7152 ∘f cof 7403 Fincfn 8527 Basecbs 16541 .rcmulr 16624 ·𝑠 cvsca 16627 0gc0g 16771 1rcur 19319 Ringcrg 19365 Mat cmat 21107 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2729 ax-rep 5156 ax-sep 5169 ax-nul 5176 ax-pow 5234 ax-pr 5298 ax-un 7459 ax-cnex 10631 ax-resscn 10632 ax-1cn 10633 ax-icn 10634 ax-addcl 10635 ax-addrcl 10636 ax-mulcl 10637 ax-mulrcl 10638 ax-mulcom 10639 ax-addass 10640 ax-mulass 10641 ax-distr 10642 ax-i2m1 10643 ax-1ne0 10644 ax-1rid 10645 ax-rnegex 10646 ax-rrecex 10647 ax-cnre 10648 ax-pre-lttri 10649 ax-pre-lttrn 10650 ax-pre-ltadd 10651 ax-pre-mulgt0 10652 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-fal 1551 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2557 df-eu 2588 df-clab 2736 df-cleq 2750 df-clel 2830 df-nfc 2901 df-ne 2952 df-nel 3056 df-ral 3075 df-rex 3076 df-reu 3077 df-rmo 3078 df-rab 3079 df-v 3411 df-sbc 3697 df-csb 3806 df-dif 3861 df-un 3863 df-in 3865 df-ss 3875 df-pss 3877 df-nul 4226 df-if 4421 df-pw 4496 df-sn 4523 df-pr 4525 df-tp 4527 df-op 4529 df-ot 4531 df-uni 4799 df-int 4839 df-iun 4885 df-iin 4886 df-br 5033 df-opab 5095 df-mpt 5113 df-tr 5139 df-id 5430 df-eprel 5435 df-po 5443 df-so 5444 df-fr 5483 df-se 5484 df-we 5485 df-xp 5530 df-rel 5531 df-cnv 5532 df-co 5533 df-dm 5534 df-rn 5535 df-res 5536 df-ima 5537 df-pred 6126 df-ord 6172 df-on 6173 df-lim 6174 df-suc 6175 df-iota 6294 df-fun 6337 df-fn 6338 df-f 6339 df-f1 6340 df-fo 6341 df-f1o 6342 df-fv 6343 df-isom 6344 df-riota 7108 df-ov 7153 df-oprab 7154 df-mpo 7155 df-of 7405 df-om 7580 df-1st 7693 df-2nd 7694 df-supp 7836 df-wrecs 7957 df-recs 8018 df-rdg 8056 df-1o 8112 df-er 8299 df-map 8418 df-ixp 8480 df-en 8528 df-dom 8529 df-sdom 8530 df-fin 8531 df-fsupp 8867 df-sup 8939 df-oi 9007 df-card 9401 df-pnf 10715 df-mnf 10716 df-xr 10717 df-ltxr 10718 df-le 10719 df-sub 10910 df-neg 10911 df-nn 11675 df-2 11737 df-3 11738 df-4 11739 df-5 11740 df-6 11741 df-7 11742 df-8 11743 df-9 11744 df-n0 11935 df-z 12021 df-dec 12138 df-uz 12283 df-fz 12940 df-fzo 13083 df-seq 13419 df-hash 13741 df-struct 16543 df-ndx 16544 df-slot 16545 df-base 16547 df-sets 16548 df-ress 16549 df-plusg 16636 df-mulr 16637 df-sca 16639 df-vsca 16640 df-ip 16641 df-tset 16642 df-ple 16643 df-ds 16645 df-hom 16647 df-cco 16648 df-0g 16773 df-gsum 16774 df-prds 16779 df-pws 16781 df-mre 16915 df-mrc 16916 df-acs 16918 df-mgm 17918 df-sgrp 17967 df-mnd 17978 df-mhm 18022 df-submnd 18023 df-grp 18172 df-minusg 18173 df-sbg 18174 df-mulg 18292 df-subg 18343 df-ghm 18423 df-cntz 18514 df-cmn 18975 df-abl 18976 df-mgp 19308 df-ur 19320 df-ring 19367 df-subrg 19601 df-lmod 19704 df-lss 19772 df-sra 20012 df-rgmod 20013 df-dsmm 20497 df-frlm 20512 df-mamu 21086 df-mat 21108 |
This theorem is referenced by: scmatscm 21213 madurid 21344 chmatval 21529 |
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