matvscacell - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > matvscacell		Structured version Visualization version GIF version

Theorem matvscacell 21929

Description: Scalar multiplication in the matrix ring is cell-wise. (Contributed by AV, 7-Aug-2019.)

**Hypotheses**
Ref	Expression
matplusgcell.a	⊢ 𝐴 = (𝑁 Mat 𝑅)
matplusgcell.b	⊢ 𝐵 = (Base‘𝐴)
matvscacell.k	⊢ 𝐾 = (Base‘𝑅)
matvscacell.v	⊢ · = ( ·_𝑠 ‘𝐴)
matvscacell.t	⊢ × = (._r‘𝑅)

**Assertion**
Ref	Expression
matvscacell	⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → (𝐼(𝑋 · 𝑌)𝐽) = (𝑋 × (𝐼𝑌𝐽)))

**Proof of Theorem matvscacell**
Step	Hyp	Ref	Expression
1		matplusgcell.a	. . . . 5 ⊢ 𝐴 = (𝑁 Mat 𝑅)
2		matplusgcell.b	. . . . 5 ⊢ 𝐵 = (Base‘𝐴)
3		matvscacell.k	. . . . 5 ⊢ 𝐾 = (Base‘𝑅)
4		matvscacell.v	. . . . 5 ⊢ · = ( ·_𝑠 ‘𝐴)
5		matvscacell.t	. . . . 5 ⊢ × = (._r‘𝑅)
6		eqid 2732	. . . . 5 ⊢ (𝑁 × 𝑁) = (𝑁 × 𝑁)
7	1, 2, 3, 4, 5, 6	matvsca2 21921	. . . 4 ⊢ ((𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) → (𝑋 · 𝑌) = (((𝑁 × 𝑁) × {𝑋}) ∘_f × 𝑌))
8	7	oveqd 7422	. . 3 ⊢ ((𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) → (𝐼(𝑋 · 𝑌)𝐽) = (𝐼(((𝑁 × 𝑁) × {𝑋}) ∘_f × 𝑌)𝐽))
9	8	3ad2ant2 1134	. 2 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → (𝐼(𝑋 · 𝑌)𝐽) = (𝐼(((𝑁 × 𝑁) × {𝑋}) ∘_f × 𝑌)𝐽))
10		df-ov 7408	. . 3 ⊢ (𝐼(((𝑁 × 𝑁) × {𝑋}) ∘_f × 𝑌)𝐽) = ((((𝑁 × 𝑁) × {𝑋}) ∘_f × 𝑌)‘⟨𝐼, 𝐽⟩)
11	10	a1i 11	. 2 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → (𝐼(((𝑁 × 𝑁) × {𝑋}) ∘_f × 𝑌)𝐽) = ((((𝑁 × 𝑁) × {𝑋}) ∘_f × 𝑌)‘⟨𝐼, 𝐽⟩))
12		opelxpi 5712	. . . 4 ⊢ ((𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁) → ⟨𝐼, 𝐽⟩ ∈ (𝑁 × 𝑁))
13	12	3ad2ant3 1135	. . 3 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → ⟨𝐼, 𝐽⟩ ∈ (𝑁 × 𝑁))
14	1, 2	matrcl 21903	. . . . . . . 8 ⊢ (𝑌 ∈ 𝐵 → (𝑁 ∈ Fin ∧ 𝑅 ∈ V))
15	14	simpld 495	. . . . . . 7 ⊢ (𝑌 ∈ 𝐵 → 𝑁 ∈ Fin)
16	15	adantl 482	. . . . . 6 ⊢ ((𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) → 𝑁 ∈ Fin)
17	16	3ad2ant2 1134	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → 𝑁 ∈ Fin)
18		xpfi 9313	. . . . 5 ⊢ ((𝑁 ∈ Fin ∧ 𝑁 ∈ Fin) → (𝑁 × 𝑁) ∈ Fin)
19	17, 17, 18	syl2anc 584	. . . 4 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → (𝑁 × 𝑁) ∈ Fin)
20		simp2l 1199	. . . 4 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → 𝑋 ∈ 𝐾)
21	2	eleq2i 2825	. . . . . . . . 9 ⊢ (𝑌 ∈ 𝐵 ↔ 𝑌 ∈ (Base‘𝐴))
22	21	biimpi 215	. . . . . . . 8 ⊢ (𝑌 ∈ 𝐵 → 𝑌 ∈ (Base‘𝐴))
23	22	adantl 482	. . . . . . 7 ⊢ ((𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) → 𝑌 ∈ (Base‘𝐴))
24	23	3ad2ant2 1134	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → 𝑌 ∈ (Base‘𝐴))
25		simp1 1136	. . . . . . 7 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → 𝑅 ∈ Ring)
26		eqid 2732	. . . . . . . 8 ⊢ (Base‘𝑅) = (Base‘𝑅)
27	1, 26	matbas2 21914	. . . . . . 7 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) → ((Base‘𝑅) ↑_m (𝑁 × 𝑁)) = (Base‘𝐴))
28	17, 25, 27	syl2anc 584	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → ((Base‘𝑅) ↑_m (𝑁 × 𝑁)) = (Base‘𝐴))
29	24, 28	eleqtrrd 2836	. . . . 5 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → 𝑌 ∈ ((Base‘𝑅) ↑_m (𝑁 × 𝑁)))
30		elmapfn 8855	. . . . 5 ⊢ (𝑌 ∈ ((Base‘𝑅) ↑_m (𝑁 × 𝑁)) → 𝑌 Fn (𝑁 × 𝑁))
31	29, 30	syl 17	. . . 4 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → 𝑌 Fn (𝑁 × 𝑁))
32		df-ov 7408	. . . . . 6 ⊢ (𝐼𝑌𝐽) = (𝑌‘⟨𝐼, 𝐽⟩)
33	32	eqcomi 2741	. . . . 5 ⊢ (𝑌‘⟨𝐼, 𝐽⟩) = (𝐼𝑌𝐽)
34	33	a1i 11	. . . 4 ⊢ (((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) ∧ ⟨𝐼, 𝐽⟩ ∈ (𝑁 × 𝑁)) → (𝑌‘⟨𝐼, 𝐽⟩) = (𝐼𝑌𝐽))
35	19, 20, 31, 34	ofc1 7692	. . 3 ⊢ (((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) ∧ ⟨𝐼, 𝐽⟩ ∈ (𝑁 × 𝑁)) → ((((𝑁 × 𝑁) × {𝑋}) ∘_f × 𝑌)‘⟨𝐼, 𝐽⟩) = (𝑋 × (𝐼𝑌𝐽)))
36	13, 35	mpdan 685	. 2 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → ((((𝑁 × 𝑁) × {𝑋}) ∘_f × 𝑌)‘⟨𝐼, 𝐽⟩) = (𝑋 × (𝐼𝑌𝐽)))
37	9, 11, 36	3eqtrd 2776	1 ⊢ ((𝑅 ∈ Ring ∧ (𝑋 ∈ 𝐾 ∧ 𝑌 ∈ 𝐵) ∧ (𝐼 ∈ 𝑁 ∧ 𝐽 ∈ 𝑁)) → (𝐼(𝑋 · 𝑌)𝐽) = (𝑋 × (𝐼𝑌𝐽)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1087 = wceq 1541 ∈ wcel 2106 Vcvv 3474 {csn 4627 ⟨cop 4633 × cxp 5673 Fn wfn 6535 ‘cfv 6540 (class class class)co 7405 ∘_f cof 7664 ↑_m cmap 8816 Fincfn 8935 Basecbs 17140 ._rcmulr 17194 ·_𝑠 cvsca 17197 Ringcrg 20049 Mat cmat 21898

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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-tp 4632 df-op 4634 df-ot 4636 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-of 7666 df-om 7852 df-1st 7971 df-2nd 7972 df-supp 8143 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-1o 8462 df-er 8699 df-map 8818 df-ixp 8888 df-en 8936 df-dom 8937 df-sdom 8938 df-fin 8939 df-fsupp 9358 df-sup 9433 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-nn 12209 df-2 12271 df-3 12272 df-4 12273 df-5 12274 df-6 12275 df-7 12276 df-8 12277 df-9 12278 df-n0 12469 df-z 12555 df-dec 12674 df-uz 12819 df-fz 13481 df-struct 17076 df-sets 17093 df-slot 17111 df-ndx 17123 df-base 17141 df-ress 17170 df-plusg 17206 df-mulr 17207 df-sca 17209 df-vsca 17210 df-ip 17211 df-tset 17212 df-ple 17213 df-ds 17215 df-hom 17217 df-cco 17218 df-0g 17383 df-prds 17389 df-pws 17391 df-sra 20777 df-rgmod 20778 df-dsmm 21278 df-frlm 21293 df-mat 21899

This theorem is referenced by: dmatscmcl 21996 scmatscmide 22000 scmatscm 22006 mat2pmatlin 22228 monmatcollpw 22272 pmatcollpwlem 22273 chpmat1dlem 22328 chpdmatlem2 22332 chpdmatlem3 22333

W3C validator