Theorem islindf4 19996

Description: A family is independent iff it has no nontrivial representations of zero. (Contributed by Stefan O'Rear, 28-Feb-2015.)

Hypotheses

Ref	Expression
islindf4.b	⊢ 𝐵 = (Base‘𝑊)
islindf4.r	⊢ 𝑅 = (Scalar‘𝑊)
islindf4.t	⊢ · = ( ·𝑠 ‘𝑊)
islindf4.z	⊢ 0 = (0g‘𝑊)
islindf4.y	⊢ 𝑌 = (0g‘𝑅)
islindf4.l	⊢ 𝐿 = (Base‘(𝑅 freeLMod 𝐼))

Assertion

Ref	Expression
islindf4	⊢ ((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) → (𝐹 LIndF 𝑊 ↔ ∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → 𝑥 = (𝐼 × {𝑌}))))

Distinct variable groups:   𝑥,𝐵   𝑥,𝐹   𝑥,𝐼   𝑥,𝐿   𝑥,𝑅   𝑥, ·   𝑥,𝑊   𝑥,𝑋   𝑥,𝑌   𝑥, 0

Proof of Theorem islindf4

Dummy variables 𝑗 𝑘 𝑙 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		raldifsni 4265	. . . . 5 ⊢ (∀𝑙 ∈ ((Base‘𝑅) ∖ {𝑌}) ¬ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) ↔ ∀𝑙 ∈ (Base‘𝑅)((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) → 𝑙 = 𝑌))
2		simpll1 1093	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝑊 ∈ LMod)
3		simprll 798	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝑙 ∈ (Base‘𝑅))
4		ffvelrn 6265	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹:𝐼⟶𝐵 ∧ 𝑗 ∈ 𝐼) → (𝐹‘𝑗) ∈ 𝐵)
5	4	3ad2antl3 1218	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (𝐹‘𝑗) ∈ 𝐵)
6	5	adantr 480	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝐹‘𝑗) ∈ 𝐵)
7		islindf4.b	. . . . . . . . . . . . . . . . 17 ⊢ 𝐵 = (Base‘𝑊)
8		islindf4.r	. . . . . . . . . . . . . . . . 17 ⊢ 𝑅 = (Scalar‘𝑊)
9		islindf4.t	. . . . . . . . . . . . . . . . 17 ⊢ · = ( ·𝑠 ‘𝑊)
10		eqid 2610	. . . . . . . . . . . . . . . . 17 ⊢ (invg‘𝑊) = (invg‘𝑊)
11		eqid 2610	. . . . . . . . . . . . . . . . 17 ⊢ (invg‘𝑅) = (invg‘𝑅)
12		eqid 2610	. . . . . . . . . . . . . . . . 17 ⊢ (Base‘𝑅) = (Base‘𝑅)
13	7, 8, 9, 10, 11, 12	lmodvsinv 18857	. . . . . . . . . . . . . . . 16 ⊢ ((𝑊 ∈ LMod ∧ 𝑙 ∈ (Base‘𝑅) ∧ (𝐹‘𝑗) ∈ 𝐵) → (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = ((invg‘𝑊)‘(𝑙 · (𝐹‘𝑗))))
14	2, 3, 6, 13	syl3anc 1318	. . . . . . . . . . . . . . 15 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = ((invg‘𝑊)‘(𝑙 · (𝐹‘𝑗))))
15	14	eqeq1d 2612	. . . . . . . . . . . . . 14 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → ((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))) ↔ ((invg‘𝑊)‘(𝑙 · (𝐹‘𝑗))) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))))
16		lmodgrp 18693	. . . . . . . . . . . . . . . 16 ⊢ (𝑊 ∈ LMod → 𝑊 ∈ Grp)
17	2, 16	syl 17	. . . . . . . . . . . . . . 15 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝑊 ∈ Grp)
18	7, 8, 9, 12	lmodvscl 18703	. . . . . . . . . . . . . . . 16 ⊢ ((𝑊 ∈ LMod ∧ 𝑙 ∈ (Base‘𝑅) ∧ (𝐹‘𝑗) ∈ 𝐵) → (𝑙 · (𝐹‘𝑗)) ∈ 𝐵)
19	2, 3, 6, 18	syl3anc 1318	. . . . . . . . . . . . . . 15 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑙 · (𝐹‘𝑗)) ∈ 𝐵)
20		islindf4.z	. . . . . . . . . . . . . . . 16 ⊢ 0 = (0g‘𝑊)
21		lmodcmn 18734	. . . . . . . . . . . . . . . . 17 ⊢ (𝑊 ∈ LMod → 𝑊 ∈ CMnd)
22	2, 21	syl 17	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝑊 ∈ CMnd)
23		simpll2 1094	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝐼 ∈ 𝑋)
24		difexg 4735	. . . . . . . . . . . . . . . . 17 ⊢ (𝐼 ∈ 𝑋 → (𝐼 ∖ {𝑗}) ∈ V)
25	23, 24	syl 17	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝐼 ∖ {𝑗}) ∈ V)
26		simprlr 799	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})))
27		elmapi 7765	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})) → 𝑦:(𝐼 ∖ {𝑗})⟶(Base‘𝑅))
28	26, 27	syl 17	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝑦:(𝐼 ∖ {𝑗})⟶(Base‘𝑅))
29		simpll3 1095	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝐹:𝐼⟶𝐵)
30		difss 3699	. . . . . . . . . . . . . . . . . 18 ⊢ (𝐼 ∖ {𝑗}) ⊆ 𝐼
31		fssres 5983	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹:𝐼⟶𝐵 ∧ (𝐼 ∖ {𝑗}) ⊆ 𝐼) → (𝐹 ↾ (𝐼 ∖ {𝑗})):(𝐼 ∖ {𝑗})⟶𝐵)
32	29, 30, 31	sylancl 693	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝐹 ↾ (𝐼 ∖ {𝑗})):(𝐼 ∖ {𝑗})⟶𝐵)
33	8, 12, 9, 7, 2, 28, 32, 25	lcomf 18725	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))):(𝐼 ∖ {𝑗})⟶𝐵)
34		islindf4.y	. . . . . . . . . . . . . . . . 17 ⊢ 𝑌 = (0g‘𝑅)
35		simprr 792	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝑦 finSupp 𝑌)
36	8, 12, 9, 7, 2, 28, 32, 25, 20, 34, 35	lcomfsupp 18726	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))) finSupp 0 )
37	7, 20, 22, 25, 33, 36	gsumcl 18139	. . . . . . . . . . . . . . 15 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))) ∈ 𝐵)
38		eqid 2610	. . . . . . . . . . . . . . . 16 ⊢ (+g‘𝑊) = (+g‘𝑊)
39	7, 38, 20, 10	grpinvid2 17294	. . . . . . . . . . . . . . 15 ⊢ ((𝑊 ∈ Grp ∧ (𝑙 · (𝐹‘𝑗)) ∈ 𝐵 ∧ (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))) ∈ 𝐵) → (((invg‘𝑊)‘(𝑙 · (𝐹‘𝑗))) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))) ↔ ((𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))(+g‘𝑊)(𝑙 · (𝐹‘𝑗))) = 0 ))
40	17, 19, 37, 39	syl3anc 1318	. . . . . . . . . . . . . 14 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (((invg‘𝑊)‘(𝑙 · (𝐹‘𝑗))) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))) ↔ ((𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))(+g‘𝑊)(𝑙 · (𝐹‘𝑗))) = 0 ))
41		simplr 788	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝑗 ∈ 𝐼)
42		fsnunf2 6357	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑦:(𝐼 ∖ {𝑗})⟶(Base‘𝑅) ∧ 𝑗 ∈ 𝐼 ∧ 𝑙 ∈ (Base‘𝑅)) → (𝑦 ∪ {⟨𝑗, 𝑙⟩}):𝐼⟶(Base‘𝑅))
43	28, 41, 3, 42	syl3anc 1318	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑦 ∪ {⟨𝑗, 𝑙⟩}):𝐼⟶(Base‘𝑅))
44	8, 12, 9, 7, 2, 43, 29, 23	lcomf 18725	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹):𝐼⟶𝐵)
45		simpr 476	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → 𝑗 ∈ 𝐼)
46		simpl 472	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) → 𝑙 ∈ (Base‘𝑅))
47	45, 46	anim12i 588	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ (𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})))) → (𝑗 ∈ 𝐼 ∧ 𝑙 ∈ (Base‘𝑅)))
48		elmapfun 7767	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})) → Fun 𝑦)
49		fdm 5964	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝑦:(𝐼 ∖ {𝑗})⟶(Base‘𝑅) → dom 𝑦 = (𝐼 ∖ {𝑗}))
50		neldifsnd 4263	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (dom 𝑦 = (𝐼 ∖ {𝑗}) → ¬ 𝑗 ∈ (𝐼 ∖ {𝑗}))
51		df-nel 2783	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ (𝑗 ∉ dom 𝑦 ↔ ¬ 𝑗 ∈ dom 𝑦)
52		eleq2 2677	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ (dom 𝑦 = (𝐼 ∖ {𝑗}) → (𝑗 ∈ dom 𝑦 ↔ 𝑗 ∈ (𝐼 ∖ {𝑗})))
53	52	notbid 307	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ (dom 𝑦 = (𝐼 ∖ {𝑗}) → (¬ 𝑗 ∈ dom 𝑦 ↔ ¬ 𝑗 ∈ (𝐼 ∖ {𝑗})))
54	51, 53	syl5bb 271	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (dom 𝑦 = (𝐼 ∖ {𝑗}) → (𝑗 ∉ dom 𝑦 ↔ ¬ 𝑗 ∈ (𝐼 ∖ {𝑗})))
55	50, 54	mpbird 246	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (dom 𝑦 = (𝐼 ∖ {𝑗}) → 𝑗 ∉ dom 𝑦)
56	49, 55	syl 17	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑦:(𝐼 ∖ {𝑗})⟶(Base‘𝑅) → 𝑗 ∉ dom 𝑦)
57	27, 56	syl 17	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})) → 𝑗 ∉ dom 𝑦)
58	48, 57	jca 553	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})) → (Fun 𝑦 ∧ 𝑗 ∉ dom 𝑦))
59	58	adantl 481	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) → (Fun 𝑦 ∧ 𝑗 ∉ dom 𝑦))
60	59	adantl 481	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ (𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})))) → (Fun 𝑦 ∧ 𝑗 ∉ dom 𝑦))
61	47, 60	jca 553	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ (𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})))) → ((𝑗 ∈ 𝐼 ∧ 𝑙 ∈ (Base‘𝑅)) ∧ (Fun 𝑦 ∧ 𝑗 ∉ dom 𝑦)))
62		funsnfsupp 8182	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((𝑗 ∈ 𝐼 ∧ 𝑙 ∈ (Base‘𝑅)) ∧ (Fun 𝑦 ∧ 𝑗 ∉ dom 𝑦)) → ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌 ↔ 𝑦 finSupp 𝑌))
63	62	bicomd 212	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝑗 ∈ 𝐼 ∧ 𝑙 ∈ (Base‘𝑅)) ∧ (Fun 𝑦 ∧ 𝑗 ∉ dom 𝑦)) → (𝑦 finSupp 𝑌 ↔ (𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌))
64	61, 63	syl 17	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ (𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})))) → (𝑦 finSupp 𝑌 ↔ (𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌))
65	64	biimpd 218	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ (𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})))) → (𝑦 finSupp 𝑌 → (𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌))
66	65	impr 647	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌)
67	8, 12, 9, 7, 2, 43, 29, 23, 20, 34, 66	lcomfsupp 18726	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) finSupp 0 )
68		incom 3767	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐼 ∖ {𝑗}) ∩ {𝑗}) = ({𝑗} ∩ (𝐼 ∖ {𝑗}))
69		disjdif 3992	. . . . . . . . . . . . . . . . . . 19 ⊢ ({𝑗} ∩ (𝐼 ∖ {𝑗})) = ∅
70	68, 69	eqtri 2632	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐼 ∖ {𝑗}) ∩ {𝑗}) = ∅
71	70	a1i 11	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → ((𝐼 ∖ {𝑗}) ∩ {𝑗}) = ∅)
72		difsnid 4282	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑗 ∈ 𝐼 → ((𝐼 ∖ {𝑗}) ∪ {𝑗}) = 𝐼)
73	72	eqcomd 2616	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑗 ∈ 𝐼 → 𝐼 = ((𝐼 ∖ {𝑗}) ∪ {𝑗}))
74	41, 73	syl 17	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝐼 = ((𝐼 ∖ {𝑗}) ∪ {𝑗}))
75	7, 20, 38, 22, 23, 44, 67, 71, 74	gsumsplit 18151	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = ((𝑊 Σg (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ (𝐼 ∖ {𝑗})))(+g‘𝑊)(𝑊 Σg (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ {𝑗}))))
76		vex 3176	. . . . . . . . . . . . . . . . . . . . 21 ⊢ 𝑦 ∈ V
77		snex 4835	. . . . . . . . . . . . . . . . . . . . 21 ⊢ {⟨𝑗, 𝑙⟩} ∈ V
78	76, 77	unex 6854	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∈ V
79		simpl3 1059	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → 𝐹:𝐼⟶𝐵)
80		simpl2 1058	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → 𝐼 ∈ 𝑋)
81		fex 6394	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝐹:𝐼⟶𝐵 ∧ 𝐼 ∈ 𝑋) → 𝐹 ∈ V)
82	79, 80, 81	syl2anc 691	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → 𝐹 ∈ V)
83	82	adantr 480	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝐹 ∈ V)
84		offres 7054	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∈ V ∧ 𝐹 ∈ V) → (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ (𝐼 ∖ {𝑗})) = (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ↾ (𝐼 ∖ {𝑗})) ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))
85	78, 83, 84	sylancr 694	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ (𝐼 ∖ {𝑗})) = (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ↾ (𝐼 ∖ {𝑗})) ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))
86		ffn 5958	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑦:(𝐼 ∖ {𝑗})⟶(Base‘𝑅) → 𝑦 Fn (𝐼 ∖ {𝑗}))
87	28, 86	syl 17	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝑦 Fn (𝐼 ∖ {𝑗}))
88		neldifsn 4262	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ¬ 𝑗 ∈ (𝐼 ∖ {𝑗})
89		fsnunres 6359	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑦 Fn (𝐼 ∖ {𝑗}) ∧ ¬ 𝑗 ∈ (𝐼 ∖ {𝑗})) → ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ↾ (𝐼 ∖ {𝑗})) = 𝑦)
90	87, 88, 89	sylancl 693	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ↾ (𝐼 ∖ {𝑗})) = 𝑦)
91	90	oveq1d 6564	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ↾ (𝐼 ∖ {𝑗})) ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))) = (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))
92	85, 91	eqtrd 2644	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ (𝐼 ∖ {𝑗})) = (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))
93	92	oveq2d 6565	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑊 Σg (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ (𝐼 ∖ {𝑗}))) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))))
94		ffn 5958	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹):𝐼⟶𝐵 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) Fn 𝐼)
95	44, 94	syl 17	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) Fn 𝐼)
96		fnressn 6330	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) Fn 𝐼 ∧ 𝑗 ∈ 𝐼) → (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ {𝑗}) = {⟨𝑗, (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)‘𝑗)⟩})
97	95, 41, 96	syl2anc 691	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ {𝑗}) = {⟨𝑗, (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)‘𝑗)⟩})
98		ffn 5958	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝑦 ∪ {⟨𝑗, 𝑙⟩}):𝐼⟶(Base‘𝑅) → (𝑦 ∪ {⟨𝑗, 𝑙⟩}) Fn 𝐼)
99	43, 98	syl 17	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑦 ∪ {⟨𝑗, 𝑙⟩}) Fn 𝐼)
100		ffn 5958	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝐹:𝐼⟶𝐵 → 𝐹 Fn 𝐼)
101	29, 100	syl 17	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝐹 Fn 𝐼)
102		fnfvof 6809	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((((𝑦 ∪ {⟨𝑗, 𝑙⟩}) Fn 𝐼 ∧ 𝐹 Fn 𝐼) ∧ (𝐼 ∈ 𝑋 ∧ 𝑗 ∈ 𝐼)) → (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)‘𝑗) = (((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) · (𝐹‘𝑗)))
103	99, 101, 23, 41, 102	syl22anc 1319	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)‘𝑗) = (((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) · (𝐹‘𝑗)))
104		fndm 5904	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝑦 Fn (𝐼 ∖ {𝑗}) → dom 𝑦 = (𝐼 ∖ {𝑗}))
105	104	eleq2d 2673	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑦 Fn (𝐼 ∖ {𝑗}) → (𝑗 ∈ dom 𝑦 ↔ 𝑗 ∈ (𝐼 ∖ {𝑗})))
106	88, 105	mtbiri 316	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑦 Fn (𝐼 ∖ {𝑗}) → ¬ 𝑗 ∈ dom 𝑦)
107		vex 3176	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ 𝑗 ∈ V
108		vex 3176	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ 𝑙 ∈ V
109		fsnunfv 6358	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝑗 ∈ V ∧ 𝑙 ∈ V ∧ ¬ 𝑗 ∈ dom 𝑦) → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑙)
110	107, 108, 109	mp3an12 1406	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (¬ 𝑗 ∈ dom 𝑦 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑙)
111	87, 106, 110	3syl 18	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑙)
112	111	oveq1d 6564	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) · (𝐹‘𝑗)) = (𝑙 · (𝐹‘𝑗)))
113	103, 112	eqtrd 2644	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)‘𝑗) = (𝑙 · (𝐹‘𝑗)))
114	113	opeq2d 4347	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → ⟨𝑗, (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)‘𝑗)⟩ = ⟨𝑗, (𝑙 · (𝐹‘𝑗))⟩)
115	114	sneqd 4137	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → {⟨𝑗, (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)‘𝑗)⟩} = {⟨𝑗, (𝑙 · (𝐹‘𝑗))⟩})
116		ovex 6577	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑙 · (𝐹‘𝑗)) ∈ V
117		fmptsn 6338	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝑗 ∈ V ∧ (𝑙 · (𝐹‘𝑗)) ∈ V) → {⟨𝑗, (𝑙 · (𝐹‘𝑗))⟩} = (𝑥 ∈ {𝑗} ↦ (𝑙 · (𝐹‘𝑗))))
118	107, 116, 117	mp2an 704	. . . . . . . . . . . . . . . . . . . . 21 ⊢ {⟨𝑗, (𝑙 · (𝐹‘𝑗))⟩} = (𝑥 ∈ {𝑗} ↦ (𝑙 · (𝐹‘𝑗)))
119	118	a1i 11	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → {⟨𝑗, (𝑙 · (𝐹‘𝑗))⟩} = (𝑥 ∈ {𝑗} ↦ (𝑙 · (𝐹‘𝑗))))
120	97, 115, 119	3eqtrd 2648	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ {𝑗}) = (𝑥 ∈ {𝑗} ↦ (𝑙 · (𝐹‘𝑗))))
121	120	oveq2d 6565	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑊 Σg (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ {𝑗})) = (𝑊 Σg (𝑥 ∈ {𝑗} ↦ (𝑙 · (𝐹‘𝑗)))))
122		cmnmnd 18031	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑊 ∈ CMnd → 𝑊 ∈ Mnd)
123	22, 122	syl 17	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝑊 ∈ Mnd)
124	107	a1i 11	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝑗 ∈ V)
125		eqidd 2611	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑥 = 𝑗 → (𝑙 · (𝐹‘𝑗)) = (𝑙 · (𝐹‘𝑗)))
126	7, 125	gsumsn 18177	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑊 ∈ Mnd ∧ 𝑗 ∈ V ∧ (𝑙 · (𝐹‘𝑗)) ∈ 𝐵) → (𝑊 Σg (𝑥 ∈ {𝑗} ↦ (𝑙 · (𝐹‘𝑗)))) = (𝑙 · (𝐹‘𝑗)))
127	123, 124, 19, 126	syl3anc 1318	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑊 Σg (𝑥 ∈ {𝑗} ↦ (𝑙 · (𝐹‘𝑗)))) = (𝑙 · (𝐹‘𝑗)))
128	121, 127	eqtrd 2644	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑊 Σg (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ {𝑗})) = (𝑙 · (𝐹‘𝑗)))
129	93, 128	oveq12d 6567	. . . . . . . . . . . . . . . 16 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → ((𝑊 Σg (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ (𝐼 ∖ {𝑗})))(+g‘𝑊)(𝑊 Σg (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹) ↾ {𝑗}))) = ((𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))(+g‘𝑊)(𝑙 · (𝐹‘𝑗))))
130	75, 129	eqtr2d 2645	. . . . . . . . . . . . . . 15 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → ((𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))(+g‘𝑊)(𝑙 · (𝐹‘𝑗))) = (𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)))
131	130	eqeq1d 2612	. . . . . . . . . . . . . 14 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (((𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))(+g‘𝑊)(𝑙 · (𝐹‘𝑗))) = 0 ↔ (𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 ))
132	15, 40, 131	3bitrd 293	. . . . . . . . . . . . 13 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → ((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))) ↔ (𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 ))
133	111	eqcomd 2616	. . . . . . . . . . . . . 14 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → 𝑙 = ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗))
134	133	eqeq1d 2612	. . . . . . . . . . . . 13 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (𝑙 = 𝑌 ↔ ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌))
135	132, 134	imbi12d 333	. . . . . . . . . . . 12 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ ((𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))) ∧ 𝑦 finSupp 𝑌)) → (((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))) → 𝑙 = 𝑌) ↔ ((𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌)))
136	135	anassrs 678	. . . . . . . . . . 11 ⊢ (((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ (𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})))) ∧ 𝑦 finSupp 𝑌) → (((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))) → 𝑙 = 𝑌) ↔ ((𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌)))
137	136	pm5.74da 719	. . . . . . . . . 10 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ (𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})))) → ((𝑦 finSupp 𝑌 → ((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))) → 𝑙 = 𝑌)) ↔ (𝑦 finSupp 𝑌 → ((𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌))))
138		impexp 461	. . . . . . . . . . 11 ⊢ (((𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))) → 𝑙 = 𝑌) ↔ (𝑦 finSupp 𝑌 → ((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))) → 𝑙 = 𝑌)))
139	138	a1i 11	. . . . . . . . . 10 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ (𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})))) → (((𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))) → 𝑙 = 𝑌) ↔ (𝑦 finSupp 𝑌 → ((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))) → 𝑙 = 𝑌))))
140	64	bicomd 212	. . . . . . . . . . 11 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ (𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})))) → ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌 ↔ 𝑦 finSupp 𝑌))
141	140	imbi1d 330	. . . . . . . . . 10 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ (𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})))) → (((𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌 → ((𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌)) ↔ (𝑦 finSupp 𝑌 → ((𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌))))
142	137, 139, 141	3bitr4d 299	. . . . . . . . 9 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ (𝑙 ∈ (Base‘𝑅) ∧ 𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗})))) → (((𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))) → 𝑙 = 𝑌) ↔ ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌 → ((𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌))))
143	142	2ralbidva 2971	. . . . . . . 8 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (∀𝑙 ∈ (Base‘𝑅)∀𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))((𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))) → 𝑙 = 𝑌) ↔ ∀𝑙 ∈ (Base‘𝑅)∀𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))((𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌 → ((𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌))))
144		breq1 4586	. . . . . . . . . . 11 ⊢ (𝑥 = (𝑦 ∪ {⟨𝑗, 𝑙⟩}) → (𝑥 finSupp 𝑌 ↔ (𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌))
145		oveq1 6556	. . . . . . . . . . . . . 14 ⊢ (𝑥 = (𝑦 ∪ {⟨𝑗, 𝑙⟩}) → (𝑥 ∘𝑓 · 𝐹) = ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹))
146	145	oveq2d 6565	. . . . . . . . . . . . 13 ⊢ (𝑥 = (𝑦 ∪ {⟨𝑗, 𝑙⟩}) → (𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = (𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)))
147	146	eqeq1d 2612	. . . . . . . . . . . 12 ⊢ (𝑥 = (𝑦 ∪ {⟨𝑗, 𝑙⟩}) → ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 ↔ (𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 ))
148		fveq1 6102	. . . . . . . . . . . . 13 ⊢ (𝑥 = (𝑦 ∪ {⟨𝑗, 𝑙⟩}) → (𝑥‘𝑗) = ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗))
149	148	eqeq1d 2612	. . . . . . . . . . . 12 ⊢ (𝑥 = (𝑦 ∪ {⟨𝑗, 𝑙⟩}) → ((𝑥‘𝑗) = 𝑌 ↔ ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌))
150	147, 149	imbi12d 333	. . . . . . . . . . 11 ⊢ (𝑥 = (𝑦 ∪ {⟨𝑗, 𝑙⟩}) → (((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌) ↔ ((𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌)))
151	144, 150	imbi12d 333	. . . . . . . . . 10 ⊢ (𝑥 = (𝑦 ∪ {⟨𝑗, 𝑙⟩}) → ((𝑥 finSupp 𝑌 → ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌)) ↔ ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌 → ((𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌))))
152	151	ralxpmap 7793	. . . . . . . . 9 ⊢ (𝑗 ∈ 𝐼 → (∀𝑥 ∈ ((Base‘𝑅) ↑𝑚 𝐼)(𝑥 finSupp 𝑌 → ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌)) ↔ ∀𝑙 ∈ (Base‘𝑅)∀𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))((𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌 → ((𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌))))
153	152	adantl 481	. . . . . . . 8 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (∀𝑥 ∈ ((Base‘𝑅) ↑𝑚 𝐼)(𝑥 finSupp 𝑌 → ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌)) ↔ ∀𝑙 ∈ (Base‘𝑅)∀𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))((𝑦 ∪ {⟨𝑗, 𝑙⟩}) finSupp 𝑌 → ((𝑊 Σg ((𝑦 ∪ {⟨𝑗, 𝑙⟩}) ∘𝑓 · 𝐹)) = 0 → ((𝑦 ∪ {⟨𝑗, 𝑙⟩})‘𝑗) = 𝑌))))
154	143, 153	bitr4d 270	. . . . . . 7 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (∀𝑙 ∈ (Base‘𝑅)∀𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))((𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))) → 𝑙 = 𝑌) ↔ ∀𝑥 ∈ ((Base‘𝑅) ↑𝑚 𝐼)(𝑥 finSupp 𝑌 → ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌))))
155		breq1 4586	. . . . . . . 8 ⊢ (𝑧 = 𝑥 → (𝑧 finSupp 𝑌 ↔ 𝑥 finSupp 𝑌))
156	155	ralrab 3335	. . . . . . 7 ⊢ (∀𝑥 ∈ {𝑧 ∈ ((Base‘𝑅) ↑𝑚 𝐼) ∣ 𝑧 finSupp 𝑌} ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌) ↔ ∀𝑥 ∈ ((Base‘𝑅) ↑𝑚 𝐼)(𝑥 finSupp 𝑌 → ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌)))
157	154, 156	syl6bbr 277	. . . . . 6 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (∀𝑙 ∈ (Base‘𝑅)∀𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))((𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))) → 𝑙 = 𝑌) ↔ ∀𝑥 ∈ {𝑧 ∈ ((Base‘𝑅) ↑𝑚 𝐼) ∣ 𝑧 finSupp 𝑌} ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌)))
158		resima 5351	. . . . . . . . . . . . 13 ⊢ ((𝐹 ↾ (𝐼 ∖ {𝑗})) “ (𝐼 ∖ {𝑗})) = (𝐹 “ (𝐼 ∖ {𝑗}))
159	158	eqcomi 2619	. . . . . . . . . . . 12 ⊢ (𝐹 “ (𝐼 ∖ {𝑗})) = ((𝐹 ↾ (𝐼 ∖ {𝑗})) “ (𝐼 ∖ {𝑗}))
160	159	fveq2i 6106	. . . . . . . . . . 11 ⊢ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) = ((LSpan‘𝑊)‘((𝐹 ↾ (𝐼 ∖ {𝑗})) “ (𝐼 ∖ {𝑗})))
161	160	eleq2i 2680	. . . . . . . . . 10 ⊢ ((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) ↔ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘((𝐹 ↾ (𝐼 ∖ {𝑗})) “ (𝐼 ∖ {𝑗}))))
162		eqid 2610	. . . . . . . . . . 11 ⊢ (LSpan‘𝑊) = (LSpan‘𝑊)
163	79, 30, 31	sylancl 693	. . . . . . . . . . 11 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (𝐹 ↾ (𝐼 ∖ {𝑗})):(𝐼 ∖ {𝑗})⟶𝐵)
164		simpl1 1057	. . . . . . . . . . 11 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → 𝑊 ∈ LMod)
165	24	3ad2ant2 1076	. . . . . . . . . . . 12 ⊢ ((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) → (𝐼 ∖ {𝑗}) ∈ V)
166	165	adantr 480	. . . . . . . . . . 11 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (𝐼 ∖ {𝑗}) ∈ V)
167	162, 7, 12, 8, 34, 9, 163, 164, 166	ellspd 19960	. . . . . . . . . 10 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → ((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘((𝐹 ↾ (𝐼 ∖ {𝑗})) “ (𝐼 ∖ {𝑗}))) ↔ ∃𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))(𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))))))
168	161, 167	syl5bb 271	. . . . . . . . 9 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → ((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) ↔ ∃𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))(𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗})))))))
169	168	imbi1d 330	. . . . . . . 8 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) → 𝑙 = 𝑌) ↔ (∃𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))(𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))) → 𝑙 = 𝑌)))
170		r19.23v 3005	. . . . . . . 8 ⊢ (∀𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))((𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))) → 𝑙 = 𝑌) ↔ (∃𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))(𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))) → 𝑙 = 𝑌))
171	169, 170	syl6bbr 277	. . . . . . 7 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) → 𝑙 = 𝑌) ↔ ∀𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))((𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))) → 𝑙 = 𝑌)))
172	171	ralbidv 2969	. . . . . 6 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (∀𝑙 ∈ (Base‘𝑅)((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) → 𝑙 = 𝑌) ↔ ∀𝑙 ∈ (Base‘𝑅)∀𝑦 ∈ ((Base‘𝑅) ↑𝑚 (𝐼 ∖ {𝑗}))((𝑦 finSupp 𝑌 ∧ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) = (𝑊 Σg (𝑦 ∘𝑓 · (𝐹 ↾ (𝐼 ∖ {𝑗}))))) → 𝑙 = 𝑌)))
173		fvex 6113	. . . . . . . . . . . 12 ⊢ (Scalar‘𝑊) ∈ V
174	8, 173	eqeltri 2684	. . . . . . . . . . 11 ⊢ 𝑅 ∈ V
175		eqid 2610	. . . . . . . . . . . 12 ⊢ (𝑅 freeLMod 𝐼) = (𝑅 freeLMod 𝐼)
176		eqid 2610	. . . . . . . . . . . 12 ⊢ {𝑧 ∈ ((Base‘𝑅) ↑𝑚 𝐼) ∣ 𝑧 finSupp 𝑌} = {𝑧 ∈ ((Base‘𝑅) ↑𝑚 𝐼) ∣ 𝑧 finSupp 𝑌}
177	175, 12, 34, 176	frlmbas 19918	. . . . . . . . . . 11 ⊢ ((𝑅 ∈ V ∧ 𝐼 ∈ 𝑋) → {𝑧 ∈ ((Base‘𝑅) ↑𝑚 𝐼) ∣ 𝑧 finSupp 𝑌} = (Base‘(𝑅 freeLMod 𝐼)))
178	174, 177	mpan 702	. . . . . . . . . 10 ⊢ (𝐼 ∈ 𝑋 → {𝑧 ∈ ((Base‘𝑅) ↑𝑚 𝐼) ∣ 𝑧 finSupp 𝑌} = (Base‘(𝑅 freeLMod 𝐼)))
179	178	3ad2ant2 1076	. . . . . . . . 9 ⊢ ((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) → {𝑧 ∈ ((Base‘𝑅) ↑𝑚 𝐼) ∣ 𝑧 finSupp 𝑌} = (Base‘(𝑅 freeLMod 𝐼)))
180	179	adantr 480	. . . . . . . 8 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → {𝑧 ∈ ((Base‘𝑅) ↑𝑚 𝐼) ∣ 𝑧 finSupp 𝑌} = (Base‘(𝑅 freeLMod 𝐼)))
181		islindf4.l	. . . . . . . 8 ⊢ 𝐿 = (Base‘(𝑅 freeLMod 𝐼))
182	180, 181	syl6reqr 2663	. . . . . . 7 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → 𝐿 = {𝑧 ∈ ((Base‘𝑅) ↑𝑚 𝐼) ∣ 𝑧 finSupp 𝑌})
183	182	raleqdv 3121	. . . . . 6 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌) ↔ ∀𝑥 ∈ {𝑧 ∈ ((Base‘𝑅) ↑𝑚 𝐼) ∣ 𝑧 finSupp 𝑌} ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌)))
184	157, 172, 183	3bitr4d 299	. . . . 5 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (∀𝑙 ∈ (Base‘𝑅)((((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) → 𝑙 = 𝑌) ↔ ∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌)))
185	1, 184	syl5bb 271	. . . 4 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (∀𝑙 ∈ ((Base‘𝑅) ∖ {𝑌}) ¬ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) ↔ ∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌)))
186	8	lmodfgrp 18695	. . . . . . . 8 ⊢ (𝑊 ∈ LMod → 𝑅 ∈ Grp)
187	12, 34, 11	grpinvnzcl 17310	. . . . . . . 8 ⊢ ((𝑅 ∈ Grp ∧ 𝑙 ∈ ((Base‘𝑅) ∖ {𝑌})) → ((invg‘𝑅)‘𝑙) ∈ ((Base‘𝑅) ∖ {𝑌}))
188	186, 187	sylan 487	. . . . . . 7 ⊢ ((𝑊 ∈ LMod ∧ 𝑙 ∈ ((Base‘𝑅) ∖ {𝑌})) → ((invg‘𝑅)‘𝑙) ∈ ((Base‘𝑅) ∖ {𝑌}))
189	12, 34, 11	grpinvnzcl 17310	. . . . . . . . 9 ⊢ ((𝑅 ∈ Grp ∧ 𝑘 ∈ ((Base‘𝑅) ∖ {𝑌})) → ((invg‘𝑅)‘𝑘) ∈ ((Base‘𝑅) ∖ {𝑌}))
190	186, 189	sylan 487	. . . . . . . 8 ⊢ ((𝑊 ∈ LMod ∧ 𝑘 ∈ ((Base‘𝑅) ∖ {𝑌})) → ((invg‘𝑅)‘𝑘) ∈ ((Base‘𝑅) ∖ {𝑌}))
191		eldifi 3694	. . . . . . . . . 10 ⊢ (𝑘 ∈ ((Base‘𝑅) ∖ {𝑌}) → 𝑘 ∈ (Base‘𝑅))
192	12, 11	grpinvinv 17305	. . . . . . . . . 10 ⊢ ((𝑅 ∈ Grp ∧ 𝑘 ∈ (Base‘𝑅)) → ((invg‘𝑅)‘((invg‘𝑅)‘𝑘)) = 𝑘)
193	186, 191, 192	syl2an 493	. . . . . . . . 9 ⊢ ((𝑊 ∈ LMod ∧ 𝑘 ∈ ((Base‘𝑅) ∖ {𝑌})) → ((invg‘𝑅)‘((invg‘𝑅)‘𝑘)) = 𝑘)
194	193	eqcomd 2616	. . . . . . . 8 ⊢ ((𝑊 ∈ LMod ∧ 𝑘 ∈ ((Base‘𝑅) ∖ {𝑌})) → 𝑘 = ((invg‘𝑅)‘((invg‘𝑅)‘𝑘)))
195		fveq2 6103	. . . . . . . . . 10 ⊢ (𝑙 = ((invg‘𝑅)‘𝑘) → ((invg‘𝑅)‘𝑙) = ((invg‘𝑅)‘((invg‘𝑅)‘𝑘)))
196	195	eqeq2d 2620	. . . . . . . . 9 ⊢ (𝑙 = ((invg‘𝑅)‘𝑘) → (𝑘 = ((invg‘𝑅)‘𝑙) ↔ 𝑘 = ((invg‘𝑅)‘((invg‘𝑅)‘𝑘))))
197	196	rspcev 3282	. . . . . . . 8 ⊢ ((((invg‘𝑅)‘𝑘) ∈ ((Base‘𝑅) ∖ {𝑌}) ∧ 𝑘 = ((invg‘𝑅)‘((invg‘𝑅)‘𝑘))) → ∃𝑙 ∈ ((Base‘𝑅) ∖ {𝑌})𝑘 = ((invg‘𝑅)‘𝑙))
198	190, 194, 197	syl2anc 691	. . . . . . 7 ⊢ ((𝑊 ∈ LMod ∧ 𝑘 ∈ ((Base‘𝑅) ∖ {𝑌})) → ∃𝑙 ∈ ((Base‘𝑅) ∖ {𝑌})𝑘 = ((invg‘𝑅)‘𝑙))
199		oveq1 6556	. . . . . . . . . 10 ⊢ (𝑘 = ((invg‘𝑅)‘𝑙) → (𝑘 · (𝐹‘𝑗)) = (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)))
200	199	eleq1d 2672	. . . . . . . . 9 ⊢ (𝑘 = ((invg‘𝑅)‘𝑙) → ((𝑘 · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) ↔ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗})))))
201	200	notbid 307	. . . . . . . 8 ⊢ (𝑘 = ((invg‘𝑅)‘𝑙) → (¬ (𝑘 · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) ↔ ¬ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗})))))
202	201	adantl 481	. . . . . . 7 ⊢ ((𝑊 ∈ LMod ∧ 𝑘 = ((invg‘𝑅)‘𝑙)) → (¬ (𝑘 · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) ↔ ¬ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗})))))
203	188, 198, 202	ralxfrd 4805	. . . . . 6 ⊢ (𝑊 ∈ LMod → (∀𝑘 ∈ ((Base‘𝑅) ∖ {𝑌}) ¬ (𝑘 · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) ↔ ∀𝑙 ∈ ((Base‘𝑅) ∖ {𝑌}) ¬ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗})))))
204	203	3ad2ant1 1075	. . . . 5 ⊢ ((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) → (∀𝑘 ∈ ((Base‘𝑅) ∖ {𝑌}) ¬ (𝑘 · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) ↔ ∀𝑙 ∈ ((Base‘𝑅) ∖ {𝑌}) ¬ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗})))))
205	204	adantr 480	. . . 4 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (∀𝑘 ∈ ((Base‘𝑅) ∖ {𝑌}) ¬ (𝑘 · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) ↔ ∀𝑙 ∈ ((Base‘𝑅) ∖ {𝑌}) ¬ (((invg‘𝑅)‘𝑙) · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗})))))
206		simplr 788	. . . . . . . 8 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ 𝑥 ∈ 𝐿) → 𝑗 ∈ 𝐼)
207		fvex 6113	. . . . . . . . . 10 ⊢ (0g‘𝑅) ∈ V
208	34, 207	eqeltri 2684	. . . . . . . . 9 ⊢ 𝑌 ∈ V
209	208	fvconst2 6374	. . . . . . . 8 ⊢ (𝑗 ∈ 𝐼 → ((𝐼 × {𝑌})‘𝑗) = 𝑌)
210	206, 209	syl 17	. . . . . . 7 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ 𝑥 ∈ 𝐿) → ((𝐼 × {𝑌})‘𝑗) = 𝑌)
211	210	eqeq2d 2620	. . . . . 6 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ 𝑥 ∈ 𝐿) → ((𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗) ↔ (𝑥‘𝑗) = 𝑌))
212	211	imbi2d 329	. . . . 5 ⊢ ((((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) ∧ 𝑥 ∈ 𝐿) → (((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗)) ↔ ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌)))
213	212	ralbidva 2968	. . . 4 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗)) ↔ ∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = 𝑌)))
214	185, 205, 213	3bitr4d 299	. . 3 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑗 ∈ 𝐼) → (∀𝑘 ∈ ((Base‘𝑅) ∖ {𝑌}) ¬ (𝑘 · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) ↔ ∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗))))
215	214	ralbidva 2968	. 2 ⊢ ((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) → (∀𝑗 ∈ 𝐼 ∀𝑘 ∈ ((Base‘𝑅) ∖ {𝑌}) ¬ (𝑘 · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗}))) ↔ ∀𝑗 ∈ 𝐼 ∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗))))
216	7, 9, 162, 8, 12, 34	islindf2 19972	. 2 ⊢ ((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) → (𝐹 LIndF 𝑊 ↔ ∀𝑗 ∈ 𝐼 ∀𝑘 ∈ ((Base‘𝑅) ∖ {𝑌}) ¬ (𝑘 · (𝐹‘𝑗)) ∈ ((LSpan‘𝑊)‘(𝐹 “ (𝐼 ∖ {𝑗})))))
217	175, 12, 181	frlmbasf 19923	. . . . . . . 8 ⊢ ((𝐼 ∈ 𝑋 ∧ 𝑥 ∈ 𝐿) → 𝑥:𝐼⟶(Base‘𝑅))
218	217	3ad2antl2 1217	. . . . . . 7 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑥 ∈ 𝐿) → 𝑥:𝐼⟶(Base‘𝑅))
219		ffn 5958	. . . . . . 7 ⊢ (𝑥:𝐼⟶(Base‘𝑅) → 𝑥 Fn 𝐼)
220	218, 219	syl 17	. . . . . 6 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑥 ∈ 𝐿) → 𝑥 Fn 𝐼)
221		fnconstg 6006	. . . . . . 7 ⊢ (𝑌 ∈ V → (𝐼 × {𝑌}) Fn 𝐼)
222	208, 221	ax-mp 5	. . . . . 6 ⊢ (𝐼 × {𝑌}) Fn 𝐼
223		eqfnfv 6219	. . . . . 6 ⊢ ((𝑥 Fn 𝐼 ∧ (𝐼 × {𝑌}) Fn 𝐼) → (𝑥 = (𝐼 × {𝑌}) ↔ ∀𝑗 ∈ 𝐼 (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗)))
224	220, 222, 223	sylancl 693	. . . . 5 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑥 ∈ 𝐿) → (𝑥 = (𝐼 × {𝑌}) ↔ ∀𝑗 ∈ 𝐼 (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗)))
225	224	imbi2d 329	. . . 4 ⊢ (((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) ∧ 𝑥 ∈ 𝐿) → (((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → 𝑥 = (𝐼 × {𝑌})) ↔ ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → ∀𝑗 ∈ 𝐼 (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗))))
226	225	ralbidva 2968	. . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) → (∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → 𝑥 = (𝐼 × {𝑌})) ↔ ∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → ∀𝑗 ∈ 𝐼 (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗))))
227		r19.21v 2943	. . . . 5 ⊢ (∀𝑗 ∈ 𝐼 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗)) ↔ ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → ∀𝑗 ∈ 𝐼 (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗)))
228	227	ralbii 2963	. . . 4 ⊢ (∀𝑥 ∈ 𝐿 ∀𝑗 ∈ 𝐼 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗)) ↔ ∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → ∀𝑗 ∈ 𝐼 (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗)))
229		ralcom 3079	. . . 4 ⊢ (∀𝑥 ∈ 𝐿 ∀𝑗 ∈ 𝐼 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗)) ↔ ∀𝑗 ∈ 𝐼 ∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗)))
230	228, 229	bitr3i 265	. . 3 ⊢ (∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → ∀𝑗 ∈ 𝐼 (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗)) ↔ ∀𝑗 ∈ 𝐼 ∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗)))
231	226, 230	syl6bb 275	. 2 ⊢ ((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) → (∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → 𝑥 = (𝐼 × {𝑌})) ↔ ∀𝑗 ∈ 𝐼 ∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → (𝑥‘𝑗) = ((𝐼 × {𝑌})‘𝑗))))
232	215, 216, 231	3bitr4d 299	1 ⊢ ((𝑊 ∈ LMod ∧ 𝐼 ∈ 𝑋 ∧ 𝐹:𝐼⟶𝐵) → (𝐹 LIndF 𝑊 ↔ ∀𝑥 ∈ 𝐿 ((𝑊 Σg (𝑥 ∘𝑓 · 𝐹)) = 0 → 𝑥 = (𝐼 × {𝑌}))))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 195   ∧ wa 383   ∧ w3a 1031   = wceq 1475   ∈ wcel 1977   ∉ wnel 2781  ∀wral 2896  ∃wrex 2897  {crab 2900  Vcvv 3173   ∖ cdif 3537   ∪ cun 3538   ∩ cin 3539   ⊆ wss 3540  ∅c0 3874  {csn 4125  ⟨cop 4131   class class class wbr 4583   ↦ cmpt 4643   × cxp 5036  dom cdm 5038   ↾ cres 5040   “ cima 5041  Fun wfun 5798   Fn wfn 5799  ⟶wf 5800  ‘cfv 5804  (class class class)co 6549   ∘_𝑓 cof 6793   ↑_𝑚 cmap 7744   finSupp cfsupp 8158  Basecbs 15695  +_gcplusg 15768  Scalarcsca 15771   ·_𝑠 cvsca 15772  0_gc0g 15923   Σ_g cgsu 15924  Mndcmnd 17117  Grpcgrp 17245  inv_gcminusg 17246  CMndccmn 18016  LModclmod 18686  LSpanclspn 18792   freeLMod cfrlm 19909   LIndF clindf 19962

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-inf2 8421  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-iin 4458  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-se 4998  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-isom 5813  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-of 6795  df-om 6958  df-1st 7059  df-2nd 7060  df-supp 7183  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-oadd 7451  df-er 7629  df-map 7746  df-ixp 7795  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-fsupp 8159  df-sup 8231  df-oi 8298  df-card 8648  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-nn 10898  df-2 10956  df-3 10957  df-4 10958  df-5 10959  df-6 10960  df-7 10961  df-8 10962  df-9 10963  df-n0 11170  df-z 11255  df-dec 11370  df-uz 11564  df-fz 12198  df-fzo 12335  df-seq 12664  df-hash 12980  df-struct 15697  df-ndx 15698  df-slot 15699  df-base 15700  df-sets 15701  df-ress 15702  df-plusg 15781  df-mulr 15782  df-sca 15784  df-vsca 15785  df-ip 15786  df-tset 15787  df-ple 15788  df-ds 15791  df-hom 15793  df-cco 15794  df-0g 15925  df-gsum 15926  df-prds 15931  df-pws 15933  df-mre 16069  df-mrc 16070  df-acs 16072  df-mgm 17065  df-sgrp 17107  df-mnd 17118  df-mhm 17158  df-submnd 17159  df-grp 17248  df-minusg 17249  df-sbg 17250  df-mulg 17364  df-subg 17414  df-ghm 17481  df-cntz 17573  df-cmn 18018  df-abl 18019  df-mgp 18313  df-ur 18325  df-ring 18372  df-subrg 18601  df-lmod 18688  df-lss 18754  df-lsp 18793  df-lmhm 18843  df-lbs 18896  df-sra 18993  df-rgmod 18994  df-nzr 19079  df-dsmm 19895  df-frlm 19910  df-uvc 19941  df-lindf 19964

This theorem is referenced by:  islindf5  19997  matunitlindflem1  32575  aacllem  42356