Theorem lincdifsn 49232

Description: A vector is a linear combination of a set containing this vector. (Contributed by AV, 21-Apr-2019.) (Revised by AV, 28-Jul-2019.)

Hypotheses

Ref	Expression
lincdifsn.b	⊢ 𝐵 = (Base‘𝑀)
lincdifsn.r	⊢ 𝑅 = (Scalar‘𝑀)
lincdifsn.s	⊢ 𝑆 = (Base‘𝑅)
lincdifsn.t	⊢ · = ( ·𝑠 ‘𝑀)
lincdifsn.p	⊢ + = (+g‘𝑀)
lincdifsn.0	⊢ 0 = (0g‘𝑅)

Assertion

Ref	Expression
lincdifsn	⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝐹( linC ‘𝑀)𝑉) = ((𝐺( linC ‘𝑀)(𝑉 ∖ {𝑋})) + ((𝐹‘𝑋) · 𝑋)))

Proof of Theorem lincdifsn

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		simp11 1222	. . 3 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → 𝑀 ∈ LMod)
2		lincdifsn.s	. . . . . . . . 9 ⊢ 𝑆 = (Base‘𝑅)
3		lincdifsn.r	. . . . . . . . . 10 ⊢ 𝑅 = (Scalar‘𝑀)
4	3	fveq2i 6884	. . . . . . . . 9 ⊢ (Base‘𝑅) = (Base‘(Scalar‘𝑀))
5	2, 4	eqtri 2786	. . . . . . . 8 ⊢ 𝑆 = (Base‘(Scalar‘𝑀))
6	5	oveq1i 7420	. . . . . . 7 ⊢ (𝑆 ↑m 𝑉) = ((Base‘(Scalar‘𝑀)) ↑m 𝑉)
7	6	eleq2i 2855	. . . . . 6 ⊢ (𝐹 ∈ (𝑆 ↑m 𝑉) ↔ 𝐹 ∈ ((Base‘(Scalar‘𝑀)) ↑m 𝑉))
8	7	biimpi 219	. . . . 5 ⊢ (𝐹 ∈ (𝑆 ↑m 𝑉) → 𝐹 ∈ ((Base‘(Scalar‘𝑀)) ↑m 𝑉))
9	8	adantr 485	. . . 4 ⊢ ((𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) → 𝐹 ∈ ((Base‘(Scalar‘𝑀)) ↑m 𝑉))
10	9	3ad2ant2 1152	. . 3 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → 𝐹 ∈ ((Base‘(Scalar‘𝑀)) ↑m 𝑉))
11		lincdifsn.b	. . . . . . . 8 ⊢ 𝐵 = (Base‘𝑀)
12	11	pweqi 4578	. . . . . . 7 ⊢ 𝒫 𝐵 = 𝒫 (Base‘𝑀)
13	12	eleq2i 2855	. . . . . 6 ⊢ (𝑉 ∈ 𝒫 𝐵 ↔ 𝑉 ∈ 𝒫 (Base‘𝑀))
14	13	biimpi 219	. . . . 5 ⊢ (𝑉 ∈ 𝒫 𝐵 → 𝑉 ∈ 𝒫 (Base‘𝑀))
15	14	3ad2ant2 1152	. . . 4 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → 𝑉 ∈ 𝒫 (Base‘𝑀))
16	15	3ad2ant1 1151	. . 3 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → 𝑉 ∈ 𝒫 (Base‘𝑀))
17		lincval 49217	. . 3 ⊢ ((𝑀 ∈ LMod ∧ 𝐹 ∈ ((Base‘(Scalar‘𝑀)) ↑m 𝑉) ∧ 𝑉 ∈ 𝒫 (Base‘𝑀)) → (𝐹( linC ‘𝑀)𝑉) = (𝑀 Σg (𝑥 ∈ 𝑉 ↦ ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥))))
18	1, 10, 16, 17	syl3anc 1398	. 2 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝐹( linC ‘𝑀)𝑉) = (𝑀 Σg (𝑥 ∈ 𝑉 ↦ ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥))))
19		lincdifsn.p	. . . 4 ⊢ + = (+g‘𝑀)
20		lmodcmn 21040	. . . . . 6 ⊢ (𝑀 ∈ LMod → 𝑀 ∈ CMnd)
21	20	3ad2ant1 1151	. . . . 5 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → 𝑀 ∈ CMnd)
22	21	3ad2ant1 1151	. . . 4 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → 𝑀 ∈ CMnd)
23		simp12 1223	. . . 4 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → 𝑉 ∈ 𝒫 𝐵)
24	14	anim2i 628	. . . . . . 7 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵) → (𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 (Base‘𝑀)))
25	24	3adant3 1150	. . . . . 6 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 (Base‘𝑀)))
26	25	3ad2ant1 1151	. . . . 5 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 (Base‘𝑀)))
27		simp2l 1218	. . . . 5 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → 𝐹 ∈ (𝑆 ↑m 𝑉))
28		lincdifsn.0	. . . . . . . . 9 ⊢ 0 = (0g‘𝑅)
29	28	breq2i 5117	. . . . . . . 8 ⊢ (𝐹 finSupp 0 ↔ 𝐹 finSupp (0g‘𝑅))
30	29	biimpi 219	. . . . . . 7 ⊢ (𝐹 finSupp 0 → 𝐹 finSupp (0g‘𝑅))
31	30	adantl 486	. . . . . 6 ⊢ ((𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) → 𝐹 finSupp (0g‘𝑅))
32	31	3ad2ant2 1152	. . . . 5 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → 𝐹 finSupp (0g‘𝑅))
33	3, 2	scmfsupp 49183	. . . . 5 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 (Base‘𝑀)) ∧ 𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp (0g‘𝑅)) → (𝑥 ∈ 𝑉 ↦ ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥)) finSupp (0g‘𝑀))
34	26, 27, 32, 33	syl3anc 1398	. . . 4 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝑥 ∈ 𝑉 ↦ ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥)) finSupp (0g‘𝑀))
35		simpl1 1210	. . . . . . 7 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) → 𝑀 ∈ LMod)
36	35	adantr 485	. . . . . 6 ⊢ ((((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) ∧ 𝑥 ∈ 𝑉) → 𝑀 ∈ LMod)
37		elmapi 8842	. . . . . . . . . 10 ⊢ (𝐹 ∈ (𝑆 ↑m 𝑉) → 𝐹:𝑉⟶𝑆)
38		ffvelcdm 7076	. . . . . . . . . . . 12 ⊢ ((𝐹:𝑉⟶𝑆 ∧ 𝑥 ∈ 𝑉) → (𝐹‘𝑥) ∈ 𝑆)
39	38	ex 417	. . . . . . . . . . 11 ⊢ (𝐹:𝑉⟶𝑆 → (𝑥 ∈ 𝑉 → (𝐹‘𝑥) ∈ 𝑆))
40	39	a1d 26	. . . . . . . . . 10 ⊢ (𝐹:𝑉⟶𝑆 → ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝑥 ∈ 𝑉 → (𝐹‘𝑥) ∈ 𝑆)))
41	37, 40	syl 18	. . . . . . . . 9 ⊢ (𝐹 ∈ (𝑆 ↑m 𝑉) → ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝑥 ∈ 𝑉 → (𝐹‘𝑥) ∈ 𝑆)))
42	41	adantr 485	. . . . . . . 8 ⊢ ((𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) → ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝑥 ∈ 𝑉 → (𝐹‘𝑥) ∈ 𝑆)))
43	42	impcom 412	. . . . . . 7 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) → (𝑥 ∈ 𝑉 → (𝐹‘𝑥) ∈ 𝑆))
44	43	imp 411	. . . . . 6 ⊢ ((((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) ∧ 𝑥 ∈ 𝑉) → (𝐹‘𝑥) ∈ 𝑆)
45		elelpwi 4572	. . . . . . . . . 10 ⊢ ((𝑥 ∈ 𝑉 ∧ 𝑉 ∈ 𝒫 𝐵) → 𝑥 ∈ 𝐵)
46	45	expcom 418	. . . . . . . . 9 ⊢ (𝑉 ∈ 𝒫 𝐵 → (𝑥 ∈ 𝑉 → 𝑥 ∈ 𝐵))
47	46	3ad2ant2 1152	. . . . . . . 8 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝑥 ∈ 𝑉 → 𝑥 ∈ 𝐵))
48	47	adantr 485	. . . . . . 7 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) → (𝑥 ∈ 𝑉 → 𝑥 ∈ 𝐵))
49	48	imp 411	. . . . . 6 ⊢ ((((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) ∧ 𝑥 ∈ 𝑉) → 𝑥 ∈ 𝐵)
50		eqid 2763	. . . . . . 7 ⊢ ( ·𝑠 ‘𝑀) = ( ·𝑠 ‘𝑀)
51	11, 3, 50, 2	lmodvscl 21008	. . . . . 6 ⊢ ((𝑀 ∈ LMod ∧ (𝐹‘𝑥) ∈ 𝑆 ∧ 𝑥 ∈ 𝐵) → ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥) ∈ 𝐵)
52	36, 44, 49, 51	syl3anc 1398	. . . . 5 ⊢ ((((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) ∧ 𝑥 ∈ 𝑉) → ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥) ∈ 𝐵)
53	52	3adantl3 1187	. . . 4 ⊢ ((((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) ∧ 𝑥 ∈ 𝑉) → ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥) ∈ 𝐵)
54		simp13 1224	. . . 4 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → 𝑋 ∈ 𝑉)
55		ffvelcdm 7076	. . . . . . . . . . 11 ⊢ ((𝐹:𝑉⟶𝑆 ∧ 𝑋 ∈ 𝑉) → (𝐹‘𝑋) ∈ 𝑆)
56	55	expcom 418	. . . . . . . . . 10 ⊢ (𝑋 ∈ 𝑉 → (𝐹:𝑉⟶𝑆 → (𝐹‘𝑋) ∈ 𝑆))
57	56	3ad2ant3 1153	. . . . . . . . 9 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝐹:𝑉⟶𝑆 → (𝐹‘𝑋) ∈ 𝑆))
58	37, 57	syl5com 32	. . . . . . . 8 ⊢ (𝐹 ∈ (𝑆 ↑m 𝑉) → ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝐹‘𝑋) ∈ 𝑆))
59	58	adantr 485	. . . . . . 7 ⊢ ((𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) → ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝐹‘𝑋) ∈ 𝑆))
60	59	impcom 412	. . . . . 6 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) → (𝐹‘𝑋) ∈ 𝑆)
61		elelpwi 4572	. . . . . . . . 9 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑉 ∈ 𝒫 𝐵) → 𝑋 ∈ 𝐵)
62	61	ancoms 463	. . . . . . . 8 ⊢ ((𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → 𝑋 ∈ 𝐵)
63	62	3adant1 1148	. . . . . . 7 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → 𝑋 ∈ 𝐵)
64	63	adantr 485	. . . . . 6 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) → 𝑋 ∈ 𝐵)
65		lincdifsn.t	. . . . . . 7 ⊢ · = ( ·𝑠 ‘𝑀)
66	11, 3, 65, 2	lmodvscl 21008	. . . . . 6 ⊢ ((𝑀 ∈ LMod ∧ (𝐹‘𝑋) ∈ 𝑆 ∧ 𝑋 ∈ 𝐵) → ((𝐹‘𝑋) · 𝑋) ∈ 𝐵)
67	35, 60, 64, 66	syl3anc 1398	. . . . 5 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) → ((𝐹‘𝑋) · 𝑋) ∈ 𝐵)
68	67	3adant3 1150	. . . 4 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → ((𝐹‘𝑋) · 𝑋) ∈ 𝐵)
69	65	eqcomi 2772	. . . . . . 7 ⊢ ( ·𝑠 ‘𝑀) = ·
70	69	a1i 11	. . . . . 6 ⊢ (𝑥 = 𝑋 → ( ·𝑠 ‘𝑀) = · )
71		fveq2 6881	. . . . . 6 ⊢ (𝑥 = 𝑋 → (𝐹‘𝑥) = (𝐹‘𝑋))
72		id 23	. . . . . 6 ⊢ (𝑥 = 𝑋 → 𝑥 = 𝑋)
73	70, 71, 72	oveq123d 7431	. . . . 5 ⊢ (𝑥 = 𝑋 → ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥) = ((𝐹‘𝑋) · 𝑋))
74	73	adantl 486	. . . 4 ⊢ ((((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) ∧ 𝑥 = 𝑋) → ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥) = ((𝐹‘𝑋) · 𝑋))
75	11, 19, 22, 23, 34, 53, 54, 68, 74	gsumdifsnd 20035	. . 3 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝑀 Σg (𝑥 ∈ 𝑉 ↦ ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥))) = ((𝑀 Σg (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥))) + ((𝐹‘𝑋) · 𝑋)))
76		fveq1 6880	. . . . . . . . . 10 ⊢ (𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋})) → (𝐺‘𝑥) = ((𝐹 ↾ (𝑉 ∖ {𝑋}))‘𝑥))
77	76	3ad2ant3 1153	. . . . . . . . 9 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝐺‘𝑥) = ((𝐹 ↾ (𝑉 ∖ {𝑋}))‘𝑥))
78		fvres 6900	. . . . . . . . 9 ⊢ (𝑥 ∈ (𝑉 ∖ {𝑋}) → ((𝐹 ↾ (𝑉 ∖ {𝑋}))‘𝑥) = (𝐹‘𝑥))
79	77, 78	sylan9eq 2818	. . . . . . . 8 ⊢ ((((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) ∧ 𝑥 ∈ (𝑉 ∖ {𝑋})) → (𝐺‘𝑥) = (𝐹‘𝑥))
80	79	oveq1d 7425	. . . . . . 7 ⊢ ((((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) ∧ 𝑥 ∈ (𝑉 ∖ {𝑋})) → ((𝐺‘𝑥)( ·𝑠 ‘𝑀)𝑥) = ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥))
81	80	mpteq2dva 5204	. . . . . 6 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐺‘𝑥)( ·𝑠 ‘𝑀)𝑥)) = (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥)))
82	81	eqcomd 2769	. . . . 5 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥)) = (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐺‘𝑥)( ·𝑠 ‘𝑀)𝑥)))
83	82	oveq2d 7426	. . . 4 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝑀 Σg (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥))) = (𝑀 Σg (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐺‘𝑥)( ·𝑠 ‘𝑀)𝑥))))
84	83	oveq1d 7425	. . 3 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → ((𝑀 Σg (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥))) + ((𝐹‘𝑋) · 𝑋)) = ((𝑀 Σg (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐺‘𝑥)( ·𝑠 ‘𝑀)𝑥))) + ((𝐹‘𝑋) · 𝑋)))
85	75, 84	eqtrd 2798	. 2 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝑀 Σg (𝑥 ∈ 𝑉 ↦ ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥))) = ((𝑀 Σg (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐺‘𝑥)( ·𝑠 ‘𝑀)𝑥))) + ((𝐹‘𝑋) · 𝑋)))
86		eqid 2763	. . . . . . . . . . . 12 ⊢ 𝑉 = 𝑉
87	86, 5	feq23i 6699	. . . . . . . . . . 11 ⊢ (𝐹:𝑉⟶𝑆 ↔ 𝐹:𝑉⟶(Base‘(Scalar‘𝑀)))
88	37, 87	sylib 221	. . . . . . . . . 10 ⊢ (𝐹 ∈ (𝑆 ↑m 𝑉) → 𝐹:𝑉⟶(Base‘(Scalar‘𝑀)))
89	88	adantr 485	. . . . . . . . 9 ⊢ ((𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) → 𝐹:𝑉⟶(Base‘(Scalar‘𝑀)))
90	89	3ad2ant2 1152	. . . . . . . 8 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → 𝐹:𝑉⟶(Base‘(Scalar‘𝑀)))
91		difssd 4091	. . . . . . . 8 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝑉 ∖ {𝑋}) ⊆ 𝑉)
92	90, 91	fssresd 6745	. . . . . . 7 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝐹 ↾ (𝑉 ∖ {𝑋})):(𝑉 ∖ {𝑋})⟶(Base‘(Scalar‘𝑀)))
93		feq1 6683	. . . . . . . 8 ⊢ (𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋})) → (𝐺:(𝑉 ∖ {𝑋})⟶(Base‘(Scalar‘𝑀)) ↔ (𝐹 ↾ (𝑉 ∖ {𝑋})):(𝑉 ∖ {𝑋})⟶(Base‘(Scalar‘𝑀))))
94	93	3ad2ant3 1153	. . . . . . 7 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝐺:(𝑉 ∖ {𝑋})⟶(Base‘(Scalar‘𝑀)) ↔ (𝐹 ↾ (𝑉 ∖ {𝑋})):(𝑉 ∖ {𝑋})⟶(Base‘(Scalar‘𝑀))))
95	92, 94	mpbird 260	. . . . . 6 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → 𝐺:(𝑉 ∖ {𝑋})⟶(Base‘(Scalar‘𝑀)))
96		fvex 6894	. . . . . . 7 ⊢ (Base‘(Scalar‘𝑀)) ∈ V
97		difexg 5300	. . . . . . . . 9 ⊢ (𝑉 ∈ 𝒫 𝐵 → (𝑉 ∖ {𝑋}) ∈ V)
98	97	3ad2ant2 1152	. . . . . . . 8 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝑉 ∖ {𝑋}) ∈ V)
99	98	3ad2ant1 1151	. . . . . . 7 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝑉 ∖ {𝑋}) ∈ V)
100		elmapg 8832	. . . . . . 7 ⊢ (((Base‘(Scalar‘𝑀)) ∈ V ∧ (𝑉 ∖ {𝑋}) ∈ V) → (𝐺 ∈ ((Base‘(Scalar‘𝑀)) ↑m (𝑉 ∖ {𝑋})) ↔ 𝐺:(𝑉 ∖ {𝑋})⟶(Base‘(Scalar‘𝑀))))
101	96, 99, 100	sylancr 598	. . . . . 6 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝐺 ∈ ((Base‘(Scalar‘𝑀)) ↑m (𝑉 ∖ {𝑋})) ↔ 𝐺:(𝑉 ∖ {𝑋})⟶(Base‘(Scalar‘𝑀))))
102	95, 101	mpbird 260	. . . . 5 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → 𝐺 ∈ ((Base‘(Scalar‘𝑀)) ↑m (𝑉 ∖ {𝑋})))
103		elpwi 4569	. . . . . . . . . 10 ⊢ (𝑉 ∈ 𝒫 𝐵 → 𝑉 ⊆ 𝐵)
104	11	sseq2i 3966	. . . . . . . . . . . 12 ⊢ (𝑉 ⊆ 𝐵 ↔ 𝑉 ⊆ (Base‘𝑀))
105	104	biimpi 219	. . . . . . . . . . 11 ⊢ (𝑉 ⊆ 𝐵 → 𝑉 ⊆ (Base‘𝑀))
106	105	ssdifssd 4101	. . . . . . . . . 10 ⊢ (𝑉 ⊆ 𝐵 → (𝑉 ∖ {𝑋}) ⊆ (Base‘𝑀))
107	103, 106	syl 18	. . . . . . . . 9 ⊢ (𝑉 ∈ 𝒫 𝐵 → (𝑉 ∖ {𝑋}) ⊆ (Base‘𝑀))
108	107	adantl 486	. . . . . . . 8 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵) → (𝑉 ∖ {𝑋}) ⊆ (Base‘𝑀))
109	97	adantl 486	. . . . . . . . 9 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵) → (𝑉 ∖ {𝑋}) ∈ V)
110		elpwg 4565	. . . . . . . . 9 ⊢ ((𝑉 ∖ {𝑋}) ∈ V → ((𝑉 ∖ {𝑋}) ∈ 𝒫 (Base‘𝑀) ↔ (𝑉 ∖ {𝑋}) ⊆ (Base‘𝑀)))
111	109, 110	syl 18	. . . . . . . 8 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵) → ((𝑉 ∖ {𝑋}) ∈ 𝒫 (Base‘𝑀) ↔ (𝑉 ∖ {𝑋}) ⊆ (Base‘𝑀)))
112	108, 111	mpbird 260	. . . . . . 7 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵) → (𝑉 ∖ {𝑋}) ∈ 𝒫 (Base‘𝑀))
113	112	3adant3 1150	. . . . . 6 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝑉 ∖ {𝑋}) ∈ 𝒫 (Base‘𝑀))
114	113	3ad2ant1 1151	. . . . 5 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝑉 ∖ {𝑋}) ∈ 𝒫 (Base‘𝑀))
115		lincval 49217	. . . . 5 ⊢ ((𝑀 ∈ LMod ∧ 𝐺 ∈ ((Base‘(Scalar‘𝑀)) ↑m (𝑉 ∖ {𝑋})) ∧ (𝑉 ∖ {𝑋}) ∈ 𝒫 (Base‘𝑀)) → (𝐺( linC ‘𝑀)(𝑉 ∖ {𝑋})) = (𝑀 Σg (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐺‘𝑥)( ·𝑠 ‘𝑀)𝑥))))
116	1, 102, 114, 115	syl3anc 1398	. . . 4 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝐺( linC ‘𝑀)(𝑉 ∖ {𝑋})) = (𝑀 Σg (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐺‘𝑥)( ·𝑠 ‘𝑀)𝑥))))
117	116	eqcomd 2769	. . 3 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝑀 Σg (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐺‘𝑥)( ·𝑠 ‘𝑀)𝑥))) = (𝐺( linC ‘𝑀)(𝑉 ∖ {𝑋})))
118	117	oveq1d 7425	. 2 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → ((𝑀 Σg (𝑥 ∈ (𝑉 ∖ {𝑋}) ↦ ((𝐺‘𝑥)( ·𝑠 ‘𝑀)𝑥))) + ((𝐹‘𝑋) · 𝑋)) = ((𝐺( linC ‘𝑀)(𝑉 ∖ {𝑋})) + ((𝐹‘𝑋) · 𝑋)))
119	18, 85, 118	3eqtrd 2802	1 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) ∧ 𝐺 = (𝐹 ↾ (𝑉 ∖ {𝑋}))) → (𝐹( linC ‘𝑀)𝑉) = ((𝐺( linC ‘𝑀)(𝑉 ∖ {𝑋})) + ((𝐹‘𝑋) · 𝑋)))

This proof depends on syntax axioms:   → wi 4   ↔ wb 209   ∧ wa 400   ∧ w3a 1103   = wceq 1570   ∈ wcel 2143  Vcvv 3455   ∖ cdif 3902   ⊆ wss 3905  𝒫 cpw 4562  {csn 4589   class class class wbr 5109   ↦ cmpt 5192   ↾ cres 5663  ⟶wf 6532  ‘cfv 6536  (class class class)co 7410   ↑_m cmap 8820   finSupp cfsupp 9317  Basecbs 17273  +_gcplusg 17314  Scalarcsca 17317   ·_𝑠 cvsca 17318  0_gc0g 17496   Σ_g cgsu 17497  CMndccmn 19854  LModclmod 20990   linC clinc 49212

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-rep 5238  ax-sep 5257  ax-nul 5269  ax-pow 5336  ax-pr 5404  ax-un 7732  ax-cnex 11160  ax-resscn 11161  ax-1cn 11162  ax-icn 11163  ax-addcl 11164  ax-addrcl 11165  ax-mulcl 11166  ax-mulrcl 11167  ax-mulcom 11168  ax-addass 11169  ax-mulass 11170  ax-distr 11171  ax-i2m1 11172  ax-1ne0 11173  ax-1rid 11174  ax-rnegex 11175  ax-rrecex 11176  ax-cnre 11177  ax-pre-lttri 11178  ax-pre-lttrn 11179  ax-pre-ltadd 11180  ax-pre-mulgt0 11181

This proof depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-nel 3065  df-ral 3080  df-rex 3090  df-rmo 3369  df-reu 3370  df-rab 3417  df-v 3457  df-sbc 3745  df-csb 3854  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-pss 3925  df-nul 4287  df-if 4488  df-pw 4564  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4873  df-int 4913  df-iun 4958  df-iin 4959  df-br 5110  df-opab 5174  df-mpt 5193  df-tr 5219  df-id 5556  df-eprel 5561  df-po 5569  df-so 5570  df-fr 5614  df-se 5615  df-we 5616  df-xp 5667  df-rel 5668  df-cnv 5669  df-co 5670  df-dm 5671  df-rn 5672  df-res 5673  df-ima 5674  df-pred 6302  df-ord 6363  df-on 6364  df-lim 6365  df-suc 6366  df-iota 6492  df-fun 6538  df-fn 6539  df-f 6540  df-f1 6541  df-fo 6542  df-f1o 6543  df-fv 6544  df-isom 6545  df-riota 7367  df-ov 7413  df-oprab 7414  df-mpo 7415  df-of 7674  df-om 7859  df-1st 7982  df-2nd 7983  df-supp 8153  df-frecs 8274  df-wrecs 8305  df-recs 8354  df-rdg 8393  df-1o 8449  df-2o 8450  df-er 8690  df-map 8822  df-en 8940  df-dom 8941  df-sdom 8942  df-fin 8943  df-fsupp 9318  df-oi 9468  df-card 9930  df-pnf 11249  df-mnf 11250  df-xr 11251  df-ltxr 11252  df-le 11253  df-sub 11447  df-neg 11448  df-nn 12238  df-2 12307  df-n0 12509  df-z 12596  df-uz 12867  df-fz 13540  df-fzo 13688  df-seq 14043  df-hash 14372  df-sets 17228  df-slot 17246  df-ndx 17258  df-base 17274  df-ress 17295  df-plusg 17327  df-0g 17498  df-gsum 17499  df-mre 17642  df-mrc 17643  df-acs 17645  df-mgm 18702  df-sgrp 18781  df-mnd 18797  df-submnd 18846  df-grp 19007  df-minusg 19008  df-mulg 19138  df-cntz 19391  df-cmn 19856  df-abl 19857  df-mgp 20221  df-ur 20268  df-ring 20321  df-lmod 20992  df-linc 49214

This theorem is used by:  lincext3  49264  lindslinindimp2lem4  49269  lincresunit3  49289