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Theorem frlmvscavalb 21725

Description: Scalar multiplication in a free module at the coordinates. (Contributed by AV, 16-Jan-2023.)

**Hypotheses**
Ref	Expression
frlmplusgvalb.f	⊢ 𝐹 = (𝑅 freeLMod 𝐼)
frlmplusgvalb.b	⊢ 𝐵 = (Base‘𝐹)
frlmplusgvalb.i	⊢ (𝜑 → 𝐼 ∈ 𝑊)
frlmplusgvalb.x	⊢ (𝜑 → 𝑋 ∈ 𝐵)
frlmplusgvalb.z	⊢ (𝜑 → 𝑍 ∈ 𝐵)
frlmplusgvalb.r	⊢ (𝜑 → 𝑅 ∈ Ring)
frlmvscavalb.k	⊢ 𝐾 = (Base‘𝑅)
frlmvscavalb.a	⊢ (𝜑 → 𝐴 ∈ 𝐾)
frlmvscavalb.v	⊢ ∙ = ( ·_𝑠 ‘𝐹)
frlmvscavalb.t	⊢ · = (._r‘𝑅)

**Assertion**
Ref	Expression
frlmvscavalb	⊢ (𝜑 → (𝑍 = (𝐴 ∙ 𝑋) ↔ ∀𝑖 ∈ 𝐼 (𝑍‘𝑖) = (𝐴 · (𝑋‘𝑖))))

Distinct variable groups: 𝑖,𝐼 𝑖,𝑋 𝑖,𝑍 𝜑,𝑖 𝐴,𝑖 ∙ ,𝑖 Allowed substitution hints: 𝐵(𝑖) 𝑅(𝑖) · (𝑖) 𝐹(𝑖) 𝐾(𝑖) 𝑊(𝑖)

**Proof of Theorem frlmvscavalb**
Step	Hyp	Ref	Expression
1		frlmplusgvalb.i	. . . . . 6 ⊢ (𝜑 → 𝐼 ∈ 𝑊)
2		frlmplusgvalb.z	. . . . . 6 ⊢ (𝜑 → 𝑍 ∈ 𝐵)
3		frlmplusgvalb.f	. . . . . . 7 ⊢ 𝐹 = (𝑅 freeLMod 𝐼)
4		frlmvscavalb.k	. . . . . . 7 ⊢ 𝐾 = (Base‘𝑅)
5		frlmplusgvalb.b	. . . . . . 7 ⊢ 𝐵 = (Base‘𝐹)
6	3, 4, 5	frlmbasmap 21714	. . . . . 6 ⊢ ((𝐼 ∈ 𝑊 ∧ 𝑍 ∈ 𝐵) → 𝑍 ∈ (𝐾 ↑_m 𝐼))
7	1, 2, 6	syl2anc 584	. . . . 5 ⊢ (𝜑 → 𝑍 ∈ (𝐾 ↑_m 𝐼))
8	4	fvexi 6848	. . . . . . 7 ⊢ 𝐾 ∈ V
9	8	a1i 11	. . . . . 6 ⊢ (𝜑 → 𝐾 ∈ V)
10	9, 1	elmapd 8777	. . . . 5 ⊢ (𝜑 → (𝑍 ∈ (𝐾 ↑_m 𝐼) ↔ 𝑍:𝐼⟶𝐾))
11	7, 10	mpbid 232	. . . 4 ⊢ (𝜑 → 𝑍:𝐼⟶𝐾)
12	11	ffnd 6663	. . 3 ⊢ (𝜑 → 𝑍 Fn 𝐼)
13		frlmplusgvalb.r	. . . . . . . 8 ⊢ (𝜑 → 𝑅 ∈ Ring)
14	3	frlmlmod 21704	. . . . . . . 8 ⊢ ((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑊) → 𝐹 ∈ LMod)
15	13, 1, 14	syl2anc 584	. . . . . . 7 ⊢ (𝜑 → 𝐹 ∈ LMod)
16		frlmvscavalb.a	. . . . . . . . 9 ⊢ (𝜑 → 𝐴 ∈ 𝐾)
17	16, 4	eleqtrdi 2846	. . . . . . . 8 ⊢ (𝜑 → 𝐴 ∈ (Base‘𝑅))
18	3	frlmsca 21708	. . . . . . . . . 10 ⊢ ((𝑅 ∈ Ring ∧ 𝐼 ∈ 𝑊) → 𝑅 = (Scalar‘𝐹))
19	13, 1, 18	syl2anc 584	. . . . . . . . 9 ⊢ (𝜑 → 𝑅 = (Scalar‘𝐹))
20	19	fveq2d 6838	. . . . . . . 8 ⊢ (𝜑 → (Base‘𝑅) = (Base‘(Scalar‘𝐹)))
21	17, 20	eleqtrd 2838	. . . . . . 7 ⊢ (𝜑 → 𝐴 ∈ (Base‘(Scalar‘𝐹)))
22		frlmplusgvalb.x	. . . . . . 7 ⊢ (𝜑 → 𝑋 ∈ 𝐵)
23		eqid 2736	. . . . . . . 8 ⊢ (Scalar‘𝐹) = (Scalar‘𝐹)
24		frlmvscavalb.v	. . . . . . . 8 ⊢ ∙ = ( ·_𝑠 ‘𝐹)
25		eqid 2736	. . . . . . . 8 ⊢ (Base‘(Scalar‘𝐹)) = (Base‘(Scalar‘𝐹))
26	5, 23, 24, 25	lmodvscl 20829	. . . . . . 7 ⊢ ((𝐹 ∈ LMod ∧ 𝐴 ∈ (Base‘(Scalar‘𝐹)) ∧ 𝑋 ∈ 𝐵) → (𝐴 ∙ 𝑋) ∈ 𝐵)
27	15, 21, 22, 26	syl3anc 1373	. . . . . 6 ⊢ (𝜑 → (𝐴 ∙ 𝑋) ∈ 𝐵)
28	3, 4, 5	frlmbasmap 21714	. . . . . 6 ⊢ ((𝐼 ∈ 𝑊 ∧ (𝐴 ∙ 𝑋) ∈ 𝐵) → (𝐴 ∙ 𝑋) ∈ (𝐾 ↑_m 𝐼))
29	1, 27, 28	syl2anc 584	. . . . 5 ⊢ (𝜑 → (𝐴 ∙ 𝑋) ∈ (𝐾 ↑_m 𝐼))
30	9, 1	elmapd 8777	. . . . 5 ⊢ (𝜑 → ((𝐴 ∙ 𝑋) ∈ (𝐾 ↑_m 𝐼) ↔ (𝐴 ∙ 𝑋):𝐼⟶𝐾))
31	29, 30	mpbid 232	. . . 4 ⊢ (𝜑 → (𝐴 ∙ 𝑋):𝐼⟶𝐾)
32	31	ffnd 6663	. . 3 ⊢ (𝜑 → (𝐴 ∙ 𝑋) Fn 𝐼)
33		eqfnfv 6976	. . 3 ⊢ ((𝑍 Fn 𝐼 ∧ (𝐴 ∙ 𝑋) Fn 𝐼) → (𝑍 = (𝐴 ∙ 𝑋) ↔ ∀𝑖 ∈ 𝐼 (𝑍‘𝑖) = ((𝐴 ∙ 𝑋)‘𝑖)))
34	12, 32, 33	syl2anc 584	. 2 ⊢ (𝜑 → (𝑍 = (𝐴 ∙ 𝑋) ↔ ∀𝑖 ∈ 𝐼 (𝑍‘𝑖) = ((𝐴 ∙ 𝑋)‘𝑖)))
35	1	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼) → 𝐼 ∈ 𝑊)
36	16	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼) → 𝐴 ∈ 𝐾)
37	22	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼) → 𝑋 ∈ 𝐵)
38		simpr 484	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼) → 𝑖 ∈ 𝐼)
39		frlmvscavalb.t	. . . . 5 ⊢ · = (._r‘𝑅)
40	3, 5, 4, 35, 36, 37, 38, 24, 39	frlmvscaval 21723	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼) → ((𝐴 ∙ 𝑋)‘𝑖) = (𝐴 · (𝑋‘𝑖)))
41	40	eqeq2d 2747	. . 3 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝐼) → ((𝑍‘𝑖) = ((𝐴 ∙ 𝑋)‘𝑖) ↔ (𝑍‘𝑖) = (𝐴 · (𝑋‘𝑖))))
42	41	ralbidva 3157	. 2 ⊢ (𝜑 → (∀𝑖 ∈ 𝐼 (𝑍‘𝑖) = ((𝐴 ∙ 𝑋)‘𝑖) ↔ ∀𝑖 ∈ 𝐼 (𝑍‘𝑖) = (𝐴 · (𝑋‘𝑖))))
43	34, 42	bitrd 279	1 ⊢ (𝜑 → (𝑍 = (𝐴 ∙ 𝑋) ↔ ∀𝑖 ∈ 𝐼 (𝑍‘𝑖) = (𝐴 · (𝑋‘𝑖))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1541 ∈ wcel 2113 ∀wral 3051 Vcvv 3440 Fn wfn 6487 ⟶wf 6488 ‘cfv 6492 (class class class)co 7358 ↑_m cmap 8763 Basecbs 17136 ._rcmulr 17178 Scalarcsca 17180 ·_𝑠 cvsca 17181 Ringcrg 20168 LModclmod 20811 freeLMod cfrlm 21701

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-rep 5224 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 ax-cnex 11082 ax-resscn 11083 ax-1cn 11084 ax-icn 11085 ax-addcl 11086 ax-addrcl 11087 ax-mulcl 11088 ax-mulrcl 11089 ax-mulcom 11090 ax-addass 11091 ax-mulass 11092 ax-distr 11093 ax-i2m1 11094 ax-1ne0 11095 ax-1rid 11096 ax-rnegex 11097 ax-rrecex 11098 ax-cnre 11099 ax-pre-lttri 11100 ax-pre-lttrn 11101 ax-pre-ltadd 11102 ax-pre-mulgt0 11103

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3350 df-reu 3351 df-rab 3400 df-v 3442 df-sbc 3741 df-csb 3850 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-pss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-tp 4585 df-op 4587 df-uni 4864 df-iun 4948 df-br 5099 df-opab 5161 df-mpt 5180 df-tr 5206 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 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-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-of 7622 df-om 7809 df-1st 7933 df-2nd 7934 df-supp 8103 df-frecs 8223 df-wrecs 8254 df-recs 8303 df-rdg 8341 df-1o 8397 df-er 8635 df-map 8765 df-ixp 8836 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-fsupp 9265 df-sup 9345 df-pnf 11168 df-mnf 11169 df-xr 11170 df-ltxr 11171 df-le 11172 df-sub 11366 df-neg 11367 df-nn 12146 df-2 12208 df-3 12209 df-4 12210 df-5 12211 df-6 12212 df-7 12213 df-8 12214 df-9 12215 df-n0 12402 df-z 12489 df-dec 12608 df-uz 12752 df-fz 13424 df-struct 17074 df-sets 17091 df-slot 17109 df-ndx 17121 df-base 17137 df-ress 17158 df-plusg 17190 df-mulr 17191 df-sca 17193 df-vsca 17194 df-ip 17195 df-tset 17196 df-ple 17197 df-ds 17199 df-hom 17201 df-cco 17202 df-0g 17361 df-prds 17367 df-pws 17369 df-mgm 18565 df-sgrp 18644 df-mnd 18660 df-grp 18866 df-minusg 18867 df-sbg 18868 df-subg 19053 df-cmn 19711 df-abl 19712 df-mgp 20076 df-rng 20088 df-ur 20117 df-ring 20170 df-subrg 20503 df-lmod 20813 df-lss 20883 df-sra 21125 df-rgmod 21126 df-dsmm 21687 df-frlm 21702

This theorem is referenced by: (None)

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