Theorem lincdifsn 49678

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 6899	. . . . . . . . 9 ⊢ (Base‘𝑅) = (Base‘(Scalar‘𝑀))
5	2, 4	eqtri 2786	. . . . . . . 8 ⊢ 𝑆 = (Base‘(Scalar‘𝑀))
6	5	oveq1i 7440	. . . . . . 7 ⊢ (𝑆 ↑m 𝑉) = ((Base‘(Scalar‘𝑀)) ↑m 𝑉)
7	6	eleq2i 2856	. . . . . 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 486	. . . 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 4576	. . . . . . 7 ⊢ 𝒫 𝐵 = 𝒫 (Base‘𝑀)
13	12	eleq2i 2856	. . . . . 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 49663	. . 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 21200	. . . . . 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 629	. . . . . . 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 5114	. . . . . . . 8 ⊢ (𝐹 finSupp 0 ↔ 𝐹 finSupp (0g‘𝑅))
30	29	biimpi 219	. . . . . . 7 ⊢ (𝐹 finSupp 0 → 𝐹 finSupp (0g‘𝑅))
31	30	adantl 487	. . . . . 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 49629	. . . . 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 486	. . . . . 6 ⊢ ((((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) ∧ 𝑥 ∈ 𝑉) → 𝑀 ∈ LMod)
37		elmapi 8883	. . . . . . . . . 10 ⊢ (𝐹 ∈ (𝑆 ↑m 𝑉) → 𝐹:𝑉⟶𝑆)
38		ffvelcdm 7092	. . . . . . . . . . . 12 ⊢ ((𝐹:𝑉⟶𝑆 ∧ 𝑥 ∈ 𝑉) → (𝐹‘𝑥) ∈ 𝑆)
39	38	ex 418	. . . . . . . . . . 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 486	. . . . . . . 8 ⊢ ((𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) → ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝑥 ∈ 𝑉 → (𝐹‘𝑥) ∈ 𝑆)))
43	42	impcom 413	. . . . . . 7 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) → (𝑥 ∈ 𝑉 → (𝐹‘𝑥) ∈ 𝑆))
44	43	imp 412	. . . . . 6 ⊢ ((((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) ∧ 𝑥 ∈ 𝑉) → (𝐹‘𝑥) ∈ 𝑆)
45		elelpwi 4570	. . . . . . . . . 10 ⊢ ((𝑥 ∈ 𝑉 ∧ 𝑉 ∈ 𝒫 𝐵) → 𝑥 ∈ 𝐵)
46	45	expcom 419	. . . . . . . . 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 486	. . . . . . 7 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) → (𝑥 ∈ 𝑉 → 𝑥 ∈ 𝐵))
49	48	imp 412	. . . . . 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 21168	. . . . . 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 7092	. . . . . . . . . . 11 ⊢ ((𝐹:𝑉⟶𝑆 ∧ 𝑋 ∈ 𝑉) → (𝐹‘𝑋) ∈ 𝑆)
56	55	expcom 419	. . . . . . . . . 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 486	. . . . . . 7 ⊢ ((𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 ) → ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝐹‘𝑋) ∈ 𝑆))
60	59	impcom 413	. . . . . 6 ⊢ (((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) ∧ (𝐹 ∈ (𝑆 ↑m 𝑉) ∧ 𝐹 finSupp 0 )) → (𝐹‘𝑋) ∈ 𝑆)
61		elelpwi 4570	. . . . . . . . 9 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑉 ∈ 𝒫 𝐵) → 𝑋 ∈ 𝐵)
62	61	ancoms 464	. . . . . . . 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 486	. . . . . 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 21168	. . . . . 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 6896	. . . . . 6 ⊢ (𝑥 = 𝑋 → (𝐹‘𝑥) = (𝐹‘𝑋))
72		id 23	. . . . . 6 ⊢ (𝑥 = 𝑋 → 𝑥 = 𝑋)
73	70, 71, 72	oveq123d 7451	. . . . 5 ⊢ (𝑥 = 𝑋 → ((𝐹‘𝑥)( ·𝑠 ‘𝑀)𝑥) = ((𝐹‘𝑋) · 𝑋))
74	73	adantl 487	. . . 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 20190	. . 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 6895	. . . . . . . . . 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 6915	. . . . . . . . 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 7445	. . . . . . 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 5201	. . . . . 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 7446	. . . 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 7445	. . 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 6714	. . . . . . . . . . 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 486	. . . . . . . . 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 4076	. . . . . . . 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 6760	. . . . . . 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 6698	. . . . . . . 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 6909	. . . . . . 7 ⊢ (Base‘(Scalar‘𝑀)) ∈ V
97		difexg 5295	. . . . . . . . 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 8873	. . . . . . 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 599	. . . . . 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 4567	. . . . . . . . . 10 ⊢ (𝑉 ∈ 𝒫 𝐵 → 𝑉 ⊆ 𝐵)
104	11	sseq2i 3942	. . . . . . . . . . . 12 ⊢ (𝑉 ⊆ 𝐵 ↔ 𝑉 ⊆ (Base‘𝑀))
105	104	biimpi 219	. . . . . . . . . . 11 ⊢ (𝑉 ⊆ 𝐵 → 𝑉 ⊆ (Base‘𝑀))
106	105	ssdifssd 4086	. . . . . . . . . 10 ⊢ (𝑉 ⊆ 𝐵 → (𝑉 ∖ {𝑋}) ⊆ (Base‘𝑀))
107	103, 106	syl 18	. . . . . . . . 9 ⊢ (𝑉 ∈ 𝒫 𝐵 → (𝑉 ∖ {𝑋}) ⊆ (Base‘𝑀))
108	107	adantl 487	. . . . . . . 8 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵) → (𝑉 ∖ {𝑋}) ⊆ (Base‘𝑀))
109	97	adantl 487	. . . . . . . . 9 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵) → (𝑉 ∖ {𝑋}) ∈ V)
110		elpwg 4563	. . . . . . . . 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 49663	. . . . 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 7445	. 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 401   ∧ w3a 1103   = wceq 1569   ∈ wcel 2146  Vcvv 3454   ⊆ wss 3900   ∖ cdif 4048  𝒫 cpw 4560  {csn 4588   class class class wbr 5106   ↦ cmpt 5189   ↾ cres 5657  ⟶wf 6543  ‘cfv 6547  (class class class)co 7430   ↑_m cmap 8861   finSupp cfsupp 9367  Basecbs 17402  +_gcplusg 17443  Scalarcsca 17446   ·_𝑠 cvsca 17447  0_gc0g 17625   Σ_g cgsu 17626  CMndccmn 20009  LModclmod 21150   linC clinc 49658

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1944  ax-6 2001  ax-7 2042  ax-8 2148  ax-9 2156  ax-10 2179  ax-11 2196  ax-12 2215  ax-ext 2735  ax-rep 5235  ax-sep 5252  ax-nul 5263  ax-pow 5331  ax-pr 5395  ax-un 7761  ax-cnex 11269  ax-resscn 11270  ax-1cn 11271  ax-icn 11272  ax-addcl 11273  ax-addrcl 11274  ax-mulcl 11275  ax-mulrcl 11276  ax-mulcom 11277  ax-addass 11278  ax-mulass 11279  ax-distr 11280  ax-i2m1 11281  ax-1ne0 11282  ax-1rid 11283  ax-rnegex 11284  ax-rrecex 11285  ax-cnre 11286  ax-pre-lttri 11287  ax-pre-lttrn 11288  ax-pre-ltadd 11289  ax-pre-mulgt0 11290

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2101  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-nel 3066  df-ral 3081  df-rex 3091  df-rmo 3369  df-reu 3370  df-rab 3417  df-v 3456  df-sbc 3743  df-csb 3852  df-ss 3901  df-pss 4017  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-int 4911  df-iun 4956  df-iin 4957  df-br 5107  df-opab 5171  df-mpt 5190  df-tr 5216  df-id 5550  df-eprel 5555  df-po 5563  df-so 5564  df-fr 5608  df-se 5609  df-we 5610  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-rn 5666  df-res 5667  df-ima 5668  df-pred 6311  df-ord 6372  df-on 6373  df-lim 6374  df-suc 6375  df-iota 6501  df-fun 6549  df-fn 6550  df-f 6551  df-f1 6552  df-fo 6553  df-f1o 6554  df-fv 6555  df-isom 6556  df-riota 7387  df-ov 7433  df-oprab 7434  df-mpo 7435  df-of 7703  df-om 7888  df-1st 8011  df-2nd 8012  df-supp 8191  df-frecs 8313  df-wrecs 8344  df-recs 8393  df-rdg 8432  df-1o 8490  df-2o 8491  df-er 8731  df-map 8863  df-en 8988  df-dom 8989  df-sdom 8990  df-fin 8991  df-fsupp 9368  df-oi 9517  df-card 10033  df-pnf 11358  df-mnf 11359  df-xr 11360  df-ltxr 11361  df-le 11362  df-sub 11556  df-neg 11557  df-nn 12349  df-2 12418  df-n0 12620  df-z 12707  df-uz 12979  df-fz 13653  df-fzo 13802  df-seq 14158  df-hash 14488  df-sets 17357  df-slot 17375  df-ndx 17387  df-base 17403  df-ress 17424  df-plusg 17456  df-0g 17627  df-gsum 17628  df-mre 17771  df-mrc 17772  df-acs 17774  df-mgm 18831  df-sgrp 18923  df-mnd 18939  df-submnd 18994  df-grp 19162  df-minusg 19163  df-mulg 19293  df-cntz 19546  df-cmn 20011  df-abl 20012  df-mgp 20376  df-ur 20423  df-ring 20476  df-lmod 21152  df-linc 49660

This theorem is used by:  lincext3  49710  lindslinindimp2lem4  49715  lincresunit3  49735