Theorem lindslinindimp2lem4 49119

Description: Lemma 4 for lindslinindsimp2 49121. (Contributed by AV, 25-Apr-2019.) (Revised by AV, 30-Jul-2019.) (Proof shortened by II, 16-Feb-2023.)

Hypotheses

Ref	Expression
lindslinind.r	⊢ 𝑅 = (Scalar‘𝑀)
lindslinind.b	⊢ 𝐵 = (Base‘𝑅)
lindslinind.0	⊢ 0 = (0g‘𝑅)
lindslinind.z	⊢ 𝑍 = (0g‘𝑀)
lindslinind.y	⊢ 𝑌 = ((invg‘𝑅)‘(𝑓‘𝑥))
lindslinind.g	⊢ 𝐺 = (𝑓 ↾ (𝑆 ∖ {𝑥}))

Assertion

Ref	Expression
lindslinindimp2lem4	⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆) ∧ (𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ∧ (𝑓( linC ‘𝑀)𝑆) = 𝑍)) → (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = (𝑌( ·𝑠 ‘𝑀)𝑥))

Distinct variable groups:   𝐵,𝑓,𝑦   𝑓,𝑀,𝑦   𝑅,𝑓,𝑥   𝑆,𝑓,𝑥,𝑦   𝑦,𝑉   𝑓,𝑍,𝑦   0 ,𝑓,𝑥,𝑦   𝑦,𝐺

Allowed substitution hints:   𝐵(𝑥)   𝑅(𝑦)   𝐺(𝑥,𝑓)   𝑀(𝑥)   𝑉(𝑥,𝑓)   𝑌(𝑥,𝑦,𝑓)   𝑍(𝑥)

Proof of Theorem lindslinindimp2lem4

Step	Hyp	Ref	Expression
1		simpr 489	. . . . . . . . . . . . 13 ⊢ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) → 𝑀 ∈ LMod)
2	1	adantr 485	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → 𝑀 ∈ LMod)
3		simprl 782	. . . . . . . . . . . . 13 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → 𝑆 ⊆ (Base‘𝑀))
4		elpwg 4567	. . . . . . . . . . . . . 14 ⊢ (𝑆 ∈ 𝑉 → (𝑆 ∈ 𝒫 (Base‘𝑀) ↔ 𝑆 ⊆ (Base‘𝑀)))
5	4	ad2antrr 738	. . . . . . . . . . . . 13 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → (𝑆 ∈ 𝒫 (Base‘𝑀) ↔ 𝑆 ⊆ (Base‘𝑀)))
6	3, 5	mpbird 260	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → 𝑆 ∈ 𝒫 (Base‘𝑀))
7		simpr 489	. . . . . . . . . . . . 13 ⊢ ((𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆) → 𝑥 ∈ 𝑆)
8	7	adantl 486	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → 𝑥 ∈ 𝑆)
9	2, 6, 8	3jca 1144	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → (𝑀 ∈ LMod ∧ 𝑆 ∈ 𝒫 (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))
10	9	adantl 486	. . . . . . . . . 10 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (𝑀 ∈ LMod ∧ 𝑆 ∈ 𝒫 (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))
11		simpl 487	. . . . . . . . . 10 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ))
12		lindslinind.g	. . . . . . . . . . 11 ⊢ 𝐺 = (𝑓 ↾ (𝑆 ∖ {𝑥}))
13	12	a1i 11	. . . . . . . . . 10 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → 𝐺 = (𝑓 ↾ (𝑆 ∖ {𝑥})))
14		eqid 2769	. . . . . . . . . . 11 ⊢ (Base‘𝑀) = (Base‘𝑀)
15		lindslinind.r	. . . . . . . . . . 11 ⊢ 𝑅 = (Scalar‘𝑀)
16		lindslinind.b	. . . . . . . . . . 11 ⊢ 𝐵 = (Base‘𝑅)
17		eqid 2769	. . . . . . . . . . 11 ⊢ ( ·𝑠 ‘𝑀) = ( ·𝑠 ‘𝑀)
18		eqid 2769	. . . . . . . . . . 11 ⊢ (+g‘𝑀) = (+g‘𝑀)
19		lindslinind.0	. . . . . . . . . . 11 ⊢ 0 = (0g‘𝑅)
20	14, 15, 16, 17, 18, 19	lincdifsn 49082	. . . . . . . . . 10 ⊢ (((𝑀 ∈ LMod ∧ 𝑆 ∈ 𝒫 (Base‘𝑀) ∧ 𝑥 ∈ 𝑆) ∧ (𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ 𝐺 = (𝑓 ↾ (𝑆 ∖ {𝑥}))) → (𝑓( linC ‘𝑀)𝑆) = ((𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥}))(+g‘𝑀)((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)))
21	10, 11, 13, 20	syl3anc 1396	. . . . . . . . 9 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (𝑓( linC ‘𝑀)𝑆) = ((𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥}))(+g‘𝑀)((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)))
22	21	eqeq1d 2771	. . . . . . . 8 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → ((𝑓( linC ‘𝑀)𝑆) = 𝑍 ↔ ((𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥}))(+g‘𝑀)((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) = 𝑍))
23		lmodgrp 20962	. . . . . . . . . . 11 ⊢ (𝑀 ∈ LMod → 𝑀 ∈ Grp)
24	23	adantl 486	. . . . . . . . . 10 ⊢ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) → 𝑀 ∈ Grp)
25	24	ad2antrl 740	. . . . . . . . 9 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → 𝑀 ∈ Grp)
26	1	ad2antrl 740	. . . . . . . . . 10 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → 𝑀 ∈ LMod)
27		elmapi 8842	. . . . . . . . . . . . 13 ⊢ (𝑓 ∈ (𝐵 ↑m 𝑆) → 𝑓:𝑆⟶𝐵)
28		ffvelcdm 7074	. . . . . . . . . . . . . . 15 ⊢ ((𝑓:𝑆⟶𝐵 ∧ 𝑥 ∈ 𝑆) → (𝑓‘𝑥) ∈ 𝐵)
29	28	expcom 418	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ 𝑆 → (𝑓:𝑆⟶𝐵 → (𝑓‘𝑥) ∈ 𝐵))
30	29	ad2antll 741	. . . . . . . . . . . . 13 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → (𝑓:𝑆⟶𝐵 → (𝑓‘𝑥) ∈ 𝐵))
31	27, 30	syl5com 32	. . . . . . . . . . . 12 ⊢ (𝑓 ∈ (𝐵 ↑m 𝑆) → (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → (𝑓‘𝑥) ∈ 𝐵))
32	31	adantr 485	. . . . . . . . . . 11 ⊢ ((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) → (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → (𝑓‘𝑥) ∈ 𝐵))
33	32	imp 411	. . . . . . . . . 10 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (𝑓‘𝑥) ∈ 𝐵)
34		ssel2 3940	. . . . . . . . . . 11 ⊢ ((𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆) → 𝑥 ∈ (Base‘𝑀))
35	34	ad2antll 741	. . . . . . . . . 10 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → 𝑥 ∈ (Base‘𝑀))
36	14, 15, 17, 16	lmodvscl 20973	. . . . . . . . . 10 ⊢ ((𝑀 ∈ LMod ∧ (𝑓‘𝑥) ∈ 𝐵 ∧ 𝑥 ∈ (Base‘𝑀)) → ((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥) ∈ (Base‘𝑀))
37	26, 33, 35, 36	syl3anc 1396	. . . . . . . . 9 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → ((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥) ∈ (Base‘𝑀))
38		difexg 5297	. . . . . . . . . . . . 13 ⊢ (𝑆 ∈ 𝑉 → (𝑆 ∖ {𝑥}) ∈ V)
39	38	ad2antrr 738	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → (𝑆 ∖ {𝑥}) ∈ V)
40		ssdifss 4102	. . . . . . . . . . . . 13 ⊢ (𝑆 ⊆ (Base‘𝑀) → (𝑆 ∖ {𝑥}) ⊆ (Base‘𝑀))
41	40	ad2antrl 740	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → (𝑆 ∖ {𝑥}) ⊆ (Base‘𝑀))
42	39, 41	jca 520	. . . . . . . . . . 11 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → ((𝑆 ∖ {𝑥}) ∈ V ∧ (𝑆 ∖ {𝑥}) ⊆ (Base‘𝑀)))
43	42	adantl 486	. . . . . . . . . 10 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → ((𝑆 ∖ {𝑥}) ∈ V ∧ (𝑆 ∖ {𝑥}) ⊆ (Base‘𝑀)))
44		simprl 782	. . . . . . . . . . . 12 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod))
45		simpl 487	. . . . . . . . . . . . 13 ⊢ ((𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆) → 𝑆 ⊆ (Base‘𝑀))
46	45	ad2antll 741	. . . . . . . . . . . 12 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → 𝑆 ⊆ (Base‘𝑀))
47	7	ad2antll 741	. . . . . . . . . . . 12 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → 𝑥 ∈ 𝑆)
48		simpl 487	. . . . . . . . . . . . 13 ⊢ ((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) → 𝑓 ∈ (𝐵 ↑m 𝑆))
49	48	adantr 485	. . . . . . . . . . . 12 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → 𝑓 ∈ (𝐵 ↑m 𝑆))
50		lindslinind.z	. . . . . . . . . . . . 13 ⊢ 𝑍 = (0g‘𝑀)
51		lindslinind.y	. . . . . . . . . . . . 13 ⊢ 𝑌 = ((invg‘𝑅)‘(𝑓‘𝑥))
52	15, 16, 19, 50, 51, 12	lindslinindimp2lem2 49117	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆 ∧ 𝑓 ∈ (𝐵 ↑m 𝑆))) → 𝐺 ∈ (𝐵 ↑m (𝑆 ∖ {𝑥})))
53	44, 46, 47, 49, 52	syl13anc 1397	. . . . . . . . . . 11 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → 𝐺 ∈ (𝐵 ↑m (𝑆 ∖ {𝑥})))
54		simpr 489	. . . . . . . . . . . . 13 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))
55	54	adantl 486	. . . . . . . . . . . 12 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))
56	15, 16, 19, 50, 51, 12	lindslinindimp2lem3 49118	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆) ∧ (𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 )) → 𝐺 finSupp 0 )
57	44, 55, 11, 56	syl3anc 1396	. . . . . . . . . . 11 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → 𝐺 finSupp 0 )
58	53, 57	jca 520	. . . . . . . . . 10 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (𝐺 ∈ (𝐵 ↑m (𝑆 ∖ {𝑥})) ∧ 𝐺 finSupp 0 ))
59	14, 15, 16, 19	lincfsuppcl 49071	. . . . . . . . . 10 ⊢ ((𝑀 ∈ LMod ∧ ((𝑆 ∖ {𝑥}) ∈ V ∧ (𝑆 ∖ {𝑥}) ⊆ (Base‘𝑀)) ∧ (𝐺 ∈ (𝐵 ↑m (𝑆 ∖ {𝑥})) ∧ 𝐺 finSupp 0 )) → (𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥})) ∈ (Base‘𝑀))
60	26, 43, 58, 59	syl3anc 1396	. . . . . . . . 9 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥})) ∈ (Base‘𝑀))
61		eqid 2769	. . . . . . . . . 10 ⊢ (invg‘𝑀) = (invg‘𝑀)
62	14, 18, 50, 61	grpinvid2 19055	. . . . . . . . 9 ⊢ ((𝑀 ∈ Grp ∧ ((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥) ∈ (Base‘𝑀) ∧ (𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥})) ∈ (Base‘𝑀)) → (((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) = (𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥})) ↔ ((𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥}))(+g‘𝑀)((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) = 𝑍))
63	25, 37, 60, 62	syl3anc 1396	. . . . . . . 8 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) = (𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥})) ↔ ((𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥}))(+g‘𝑀)((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) = 𝑍))
64	22, 63	bitr4d 285	. . . . . . 7 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → ((𝑓( linC ‘𝑀)𝑆) = 𝑍 ↔ ((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) = (𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥}))))
65		eqcom 2776	. . . . . . . 8 ⊢ (((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) = (𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥})) ↔ (𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥})) = ((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)))
66	15	fveq2i 6882	. . . . . . . . . . . . . 14 ⊢ (Base‘𝑅) = (Base‘(Scalar‘𝑀))
67	16, 66	eqtri 2792	. . . . . . . . . . . . 13 ⊢ 𝐵 = (Base‘(Scalar‘𝑀))
68	67	oveq1i 7418	. . . . . . . . . . . 12 ⊢ (𝐵 ↑m (𝑆 ∖ {𝑥})) = ((Base‘(Scalar‘𝑀)) ↑m (𝑆 ∖ {𝑥}))
69	53, 68	eleqtrdi 2879	. . . . . . . . . . 11 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → 𝐺 ∈ ((Base‘(Scalar‘𝑀)) ↑m (𝑆 ∖ {𝑥})))
70	39, 41	elpwd 4570	. . . . . . . . . . . 12 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → (𝑆 ∖ {𝑥}) ∈ 𝒫 (Base‘𝑀))
71	70	adantl 486	. . . . . . . . . . 11 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (𝑆 ∖ {𝑥}) ∈ 𝒫 (Base‘𝑀))
72		lincval 49067	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ LMod ∧ 𝐺 ∈ ((Base‘(Scalar‘𝑀)) ↑m (𝑆 ∖ {𝑥})) ∧ (𝑆 ∖ {𝑥}) ∈ 𝒫 (Base‘𝑀)) → (𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥})) = (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝐺‘𝑦)( ·𝑠 ‘𝑀)𝑦))))
73	26, 69, 71, 72	syl3anc 1396	. . . . . . . . . 10 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥})) = (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝐺‘𝑦)( ·𝑠 ‘𝑀)𝑦))))
74	73	eqeq1d 2771	. . . . . . . . 9 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → ((𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥})) = ((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) ↔ (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝐺‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = ((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥))))
75	12	fveq1i 6880	. . . . . . . . . . . . . . . 16 ⊢ (𝐺‘𝑦) = ((𝑓 ↾ (𝑆 ∖ {𝑥}))‘𝑦)
76	75	a1i 11	. . . . . . . . . . . . . . 15 ⊢ ((((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) ∧ 𝑦 ∈ (𝑆 ∖ {𝑥})) → (𝐺‘𝑦) = ((𝑓 ↾ (𝑆 ∖ {𝑥}))‘𝑦))
77		fvres 6898	. . . . . . . . . . . . . . . 16 ⊢ (𝑦 ∈ (𝑆 ∖ {𝑥}) → ((𝑓 ↾ (𝑆 ∖ {𝑥}))‘𝑦) = (𝑓‘𝑦))
78	77	adantl 486	. . . . . . . . . . . . . . 15 ⊢ ((((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) ∧ 𝑦 ∈ (𝑆 ∖ {𝑥})) → ((𝑓 ↾ (𝑆 ∖ {𝑥}))‘𝑦) = (𝑓‘𝑦))
79	76, 78	eqtrd 2804	. . . . . . . . . . . . . 14 ⊢ ((((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) ∧ 𝑦 ∈ (𝑆 ∖ {𝑥})) → (𝐺‘𝑦) = (𝑓‘𝑦))
80	79	oveq1d 7423	. . . . . . . . . . . . 13 ⊢ ((((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) ∧ 𝑦 ∈ (𝑆 ∖ {𝑥})) → ((𝐺‘𝑦)( ·𝑠 ‘𝑀)𝑦) = ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))
81	80	mpteq2dva 5205	. . . . . . . . . . . 12 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝐺‘𝑦)( ·𝑠 ‘𝑀)𝑦)) = (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦)))
82	81	oveq2d 7424	. . . . . . . . . . 11 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝐺‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))))
83		eqid 2769	. . . . . . . . . . . . 13 ⊢ (invg‘𝑅) = (invg‘𝑅)
84	14, 15, 17, 61, 16, 83, 26, 35, 33	lmodvsneg 21001	. . . . . . . . . . . 12 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → ((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) = (((invg‘𝑅)‘(𝑓‘𝑥))( ·𝑠 ‘𝑀)𝑥))
85	51	eqcomi 2778	. . . . . . . . . . . . . 14 ⊢ ((invg‘𝑅)‘(𝑓‘𝑥)) = 𝑌
86	85	a1i 11	. . . . . . . . . . . . 13 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → ((invg‘𝑅)‘(𝑓‘𝑥)) = 𝑌)
87	86	oveq1d 7423	. . . . . . . . . . . 12 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (((invg‘𝑅)‘(𝑓‘𝑥))( ·𝑠 ‘𝑀)𝑥) = (𝑌( ·𝑠 ‘𝑀)𝑥))
88	84, 87	eqtrd 2804	. . . . . . . . . . 11 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → ((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) = (𝑌( ·𝑠 ‘𝑀)𝑥))
89	82, 88	eqeq12d 2785	. . . . . . . . . 10 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → ((𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝐺‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = ((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) ↔ (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = (𝑌( ·𝑠 ‘𝑀)𝑥)))
90	89	biimpd 232	. . . . . . . . 9 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → ((𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝐺‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = ((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) → (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = (𝑌( ·𝑠 ‘𝑀)𝑥)))
91	74, 90	sylbid 243	. . . . . . . 8 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → ((𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥})) = ((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) → (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = (𝑌( ·𝑠 ‘𝑀)𝑥)))
92	65, 91	biimtrid 245	. . . . . . 7 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → (((invg‘𝑀)‘((𝑓‘𝑥)( ·𝑠 ‘𝑀)𝑥)) = (𝐺( linC ‘𝑀)(𝑆 ∖ {𝑥})) → (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = (𝑌( ·𝑠 ‘𝑀)𝑥)))
93	64, 92	sylbid 243	. . . . . 6 ⊢ (((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) ∧ ((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆))) → ((𝑓( linC ‘𝑀)𝑆) = 𝑍 → (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = (𝑌( ·𝑠 ‘𝑀)𝑥)))
94	93	ex 417	. . . . 5 ⊢ ((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) → (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → ((𝑓( linC ‘𝑀)𝑆) = 𝑍 → (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = (𝑌( ·𝑠 ‘𝑀)𝑥))))
95	94	com23 87	. . . 4 ⊢ ((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ) → ((𝑓( linC ‘𝑀)𝑆) = 𝑍 → (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = (𝑌( ·𝑠 ‘𝑀)𝑥))))
96	95	3impia 1133	. . 3 ⊢ ((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ∧ (𝑓( linC ‘𝑀)𝑆) = 𝑍) → (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = (𝑌( ·𝑠 ‘𝑀)𝑥)))
97	96	com12 33	. 2 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆)) → ((𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ∧ (𝑓( linC ‘𝑀)𝑆) = 𝑍) → (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = (𝑌( ·𝑠 ‘𝑀)𝑥)))
98	97	3impia 1133	1 ⊢ (((𝑆 ∈ 𝑉 ∧ 𝑀 ∈ LMod) ∧ (𝑆 ⊆ (Base‘𝑀) ∧ 𝑥 ∈ 𝑆) ∧ (𝑓 ∈ (𝐵 ↑m 𝑆) ∧ 𝑓 finSupp 0 ∧ (𝑓( linC ‘𝑀)𝑆) = 𝑍)) → (𝑀 Σg (𝑦 ∈ (𝑆 ∖ {𝑥}) ↦ ((𝑓‘𝑦)( ·𝑠 ‘𝑀)𝑦))) = (𝑌( ·𝑠 ‘𝑀)𝑥))

Syntax hints:   → wi 4   ↔ wb 209   ∧ wa 400   ∧ w3a 1101   = wceq 1567   ∈ wcel 2149  Vcvv 3463   ∖ cdif 3910   ⊆ wss 3913  𝒫 cpw 4564  {csn 4591   class class class wbr 5110   ↦ cmpt 5193   ↾ cres 5661  ⟶wf 6529  ‘cfv 6533  (class class class)co 7408   ↑_m cmap 8820   finSupp cfsupp 9317  Basecbs 17265  +_gcplusg 17306  Scalarcsca 17309   ·_𝑠 cvsca 17310  0_gc0g 17488   Σ_g cgsu 17489  Grpcgrp 18996  inv_gcminusg 18997  LModclmod 20955   linC clinc 49062

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-10 2182  ax-11 2198  ax-12 2219  ax-ext 2741  ax-rep 5239  ax-sep 5258  ax-nul 5268  ax-pow 5334  ax-pr 5402  ax-un 7730  ax-cnex 11152  ax-resscn 11153  ax-1cn 11154  ax-icn 11155  ax-addcl 11156  ax-addrcl 11157  ax-mulcl 11158  ax-mulrcl 11159  ax-mulcom 11160  ax-addass 11161  ax-mulass 11162  ax-distr 11163  ax-i2m1 11164  ax-1ne0 11165  ax-1rid 11166  ax-rnegex 11167  ax-rrecex 11168  ax-cnre 11169  ax-pre-lttri 11170  ax-pre-lttrn 11171  ax-pre-ltadd 11172  ax-pre-mulgt0 11173

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3or 1102  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-nf 1811  df-sb 2098  df-mo 2573  df-eu 2603  df-clab 2748  df-cleq 2761  df-clel 2844  df-nfc 2918  df-ne 2965  df-nel 3071  df-ral 3086  df-rex 3096  df-rmo 3376  df-reu 3377  df-rab 3424  df-v 3465  df-sbc 3754  df-csb 3862  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-pss 3933  df-nul 4295  df-if 4490  df-pw 4566  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4874  df-int 4914  df-iun 4959  df-iin 4960  df-br 5111  df-opab 5175  df-mpt 5194  df-tr 5220  df-id 5554  df-eprel 5559  df-po 5567  df-so 5568  df-fr 5612  df-se 5613  df-we 5614  df-xp 5665  df-rel 5666  df-cnv 5667  df-co 5668  df-dm 5669  df-rn 5670  df-res 5671  df-ima 5672  df-pred 6299  df-ord 6360  df-on 6361  df-lim 6362  df-suc 6363  df-iota 6489  df-fun 6535  df-fn 6536  df-f 6537  df-f1 6538  df-fo 6539  df-f1o 6540  df-fv 6541  df-isom 6542  df-riota 7365  df-ov 7411  df-oprab 7412  df-mpo 7413  df-of 7672  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 9921  df-pnf 11241  df-mnf 11242  df-xr 11243  df-ltxr 11244  df-le 11245  df-sub 11439  df-neg 11440  df-nn 12230  df-2 12299  df-n0 12501  df-z 12588  df-uz 12859  df-fz 13532  df-fzo 13679  df-seq 14034  df-hash 14363  df-sets 17220  df-slot 17238  df-ndx 17250  df-base 17266  df-ress 17287  df-plusg 17319  df-0g 17490  df-gsum 17491  df-mre 17634  df-mrc 17635  df-acs 17637  df-mgm 18694  df-sgrp 18773  df-mnd 18789  df-submnd 18838  df-grp 18999  df-minusg 19000  df-mulg 19130  df-cntz 19383  df-cmn 19848  df-abl 19849  df-mgp 20213  df-rng 20227  df-ur 20260  df-ring 20313  df-lmod 20957  df-linc 49064

This theorem is referenced by:  lindslinindsimp2lem5  49120