Theorem mdetunilem1 21961

Description: Lemma for mdetuni 21971. (Contributed by SO, 14-Jul-2018.)

Hypotheses

Ref	Expression
mdetuni.a	⊢ 𝐴 = (𝑁 Mat 𝑅)
mdetuni.b	⊢ 𝐵 = (Base‘𝐴)
mdetuni.k	⊢ 𝐾 = (Base‘𝑅)
mdetuni.0g	⊢ 0 = (0g‘𝑅)
mdetuni.1r	⊢ 1 = (1r‘𝑅)
mdetuni.pg	⊢ + = (+g‘𝑅)
mdetuni.tg	⊢ · = (.r‘𝑅)
mdetuni.n	⊢ (𝜑 → 𝑁 ∈ Fin)
mdetuni.r	⊢ (𝜑 → 𝑅 ∈ Ring)
mdetuni.ff	⊢ (𝜑 → 𝐷:𝐵⟶𝐾)
mdetuni.al	⊢ (𝜑 → ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝑁 ∀𝑧 ∈ 𝑁 ((𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝑥𝑤) = (𝑧𝑥𝑤)) → (𝐷‘𝑥) = 0 ))
mdetuni.li	⊢ (𝜑 → ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 ∀𝑧 ∈ 𝐵 ∀𝑤 ∈ 𝑁 (((𝑥 ↾ ({𝑤} × 𝑁)) = ((𝑦 ↾ ({𝑤} × 𝑁)) ∘f + (𝑧 ↾ ({𝑤} × 𝑁))) ∧ (𝑥 ↾ ((𝑁 ∖ {𝑤}) × 𝑁)) = (𝑦 ↾ ((𝑁 ∖ {𝑤}) × 𝑁)) ∧ (𝑥 ↾ ((𝑁 ∖ {𝑤}) × 𝑁)) = (𝑧 ↾ ((𝑁 ∖ {𝑤}) × 𝑁))) → (𝐷‘𝑥) = ((𝐷‘𝑦) + (𝐷‘𝑧))))
mdetuni.sc	⊢ (𝜑 → ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐾 ∀𝑧 ∈ 𝐵 ∀𝑤 ∈ 𝑁 (((𝑥 ↾ ({𝑤} × 𝑁)) = ((({𝑤} × 𝑁) × {𝑦}) ∘f · (𝑧 ↾ ({𝑤} × 𝑁))) ∧ (𝑥 ↾ ((𝑁 ∖ {𝑤}) × 𝑁)) = (𝑧 ↾ ((𝑁 ∖ {𝑤}) × 𝑁))) → (𝐷‘𝑥) = (𝑦 · (𝐷‘𝑧))))

Assertion

Ref	Expression
mdetunilem1	⊢ (((𝜑 ∧ 𝐸 ∈ 𝐵 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) ∧ (𝐹 ∈ 𝑁 ∧ 𝐺 ∈ 𝑁 ∧ 𝐹 ≠ 𝐺)) → (𝐷‘𝐸) = 0 )

Distinct variable groups:   𝜑,𝑥,𝑦,𝑧,𝑤   𝑥,𝐵,𝑦,𝑧,𝑤   𝑥,𝐾,𝑦,𝑧,𝑤   𝑥,𝑁,𝑦,𝑧,𝑤   𝑥,𝐷,𝑦,𝑧,𝑤   𝑥, · ,𝑦,𝑧,𝑤   𝑥, + ,𝑦,𝑧,𝑤   𝑥, 0 ,𝑦,𝑧,𝑤   𝑥, 1 ,𝑦,𝑧,𝑤   𝑥,𝑅,𝑦,𝑧,𝑤   𝑥,𝐴,𝑦,𝑧,𝑤   𝑥,𝐸,𝑦,𝑧,𝑤   𝑥,𝐹,𝑦,𝑧,𝑤   𝑥,𝐺,𝑦,𝑧,𝑤

Proof of Theorem mdetunilem1

Step	Hyp	Ref	Expression
1		simpr3 1196	. 2 ⊢ (((𝜑 ∧ 𝐸 ∈ 𝐵 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) ∧ (𝐹 ∈ 𝑁 ∧ 𝐺 ∈ 𝑁 ∧ 𝐹 ≠ 𝐺)) → 𝐹 ≠ 𝐺)
2		simpl3 1193	. 2 ⊢ (((𝜑 ∧ 𝐸 ∈ 𝐵 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) ∧ (𝐹 ∈ 𝑁 ∧ 𝐺 ∈ 𝑁 ∧ 𝐹 ≠ 𝐺)) → ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤))
3		neeq2 3007	. . . . 5 ⊢ (𝑧 = 𝐺 → (𝐹 ≠ 𝑧 ↔ 𝐹 ≠ 𝐺))
4		oveq1 7364	. . . . . . 7 ⊢ (𝑧 = 𝐺 → (𝑧𝐸𝑤) = (𝐺𝐸𝑤))
5	4	eqeq2d 2747	. . . . . 6 ⊢ (𝑧 = 𝐺 → ((𝐹𝐸𝑤) = (𝑧𝐸𝑤) ↔ (𝐹𝐸𝑤) = (𝐺𝐸𝑤)))
6	5	ralbidv 3174	. . . . 5 ⊢ (𝑧 = 𝐺 → (∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝑧𝐸𝑤) ↔ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)))
7	3, 6	anbi12d 631	. . . 4 ⊢ (𝑧 = 𝐺 → ((𝐹 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝑧𝐸𝑤)) ↔ (𝐹 ≠ 𝐺 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤))))
8	7	imbi1d 341	. . 3 ⊢ (𝑧 = 𝐺 → (((𝐹 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝑧𝐸𝑤)) → (𝐷‘𝐸) = 0 ) ↔ ((𝐹 ≠ 𝐺 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) → (𝐷‘𝐸) = 0 )))
9		simpl2 1192	. . . 4 ⊢ (((𝜑 ∧ 𝐸 ∈ 𝐵 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) ∧ (𝐹 ∈ 𝑁 ∧ 𝐺 ∈ 𝑁 ∧ 𝐹 ≠ 𝐺)) → 𝐸 ∈ 𝐵)
10		simpr1 1194	. . . 4 ⊢ (((𝜑 ∧ 𝐸 ∈ 𝐵 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) ∧ (𝐹 ∈ 𝑁 ∧ 𝐺 ∈ 𝑁 ∧ 𝐹 ≠ 𝐺)) → 𝐹 ∈ 𝑁)
11		simpl1 1191	. . . . 5 ⊢ (((𝜑 ∧ 𝐸 ∈ 𝐵 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) ∧ (𝐹 ∈ 𝑁 ∧ 𝐺 ∈ 𝑁 ∧ 𝐹 ≠ 𝐺)) → 𝜑)
12		mdetuni.al	. . . . 5 ⊢ (𝜑 → ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝑁 ∀𝑧 ∈ 𝑁 ((𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝑥𝑤) = (𝑧𝑥𝑤)) → (𝐷‘𝑥) = 0 ))
13	11, 12	syl 17	. . . 4 ⊢ (((𝜑 ∧ 𝐸 ∈ 𝐵 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) ∧ (𝐹 ∈ 𝑁 ∧ 𝐺 ∈ 𝑁 ∧ 𝐹 ≠ 𝐺)) → ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝑁 ∀𝑧 ∈ 𝑁 ((𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝑥𝑤) = (𝑧𝑥𝑤)) → (𝐷‘𝑥) = 0 ))
14		oveq 7363	. . . . . . . . . 10 ⊢ (𝑥 = 𝐸 → (𝑦𝑥𝑤) = (𝑦𝐸𝑤))
15		oveq 7363	. . . . . . . . . 10 ⊢ (𝑥 = 𝐸 → (𝑧𝑥𝑤) = (𝑧𝐸𝑤))
16	14, 15	eqeq12d 2752	. . . . . . . . 9 ⊢ (𝑥 = 𝐸 → ((𝑦𝑥𝑤) = (𝑧𝑥𝑤) ↔ (𝑦𝐸𝑤) = (𝑧𝐸𝑤)))
17	16	ralbidv 3174	. . . . . . . 8 ⊢ (𝑥 = 𝐸 → (∀𝑤 ∈ 𝑁 (𝑦𝑥𝑤) = (𝑧𝑥𝑤) ↔ ∀𝑤 ∈ 𝑁 (𝑦𝐸𝑤) = (𝑧𝐸𝑤)))
18	17	anbi2d 629	. . . . . . 7 ⊢ (𝑥 = 𝐸 → ((𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝑥𝑤) = (𝑧𝑥𝑤)) ↔ (𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝐸𝑤) = (𝑧𝐸𝑤))))
19		fveqeq2 6851	. . . . . . 7 ⊢ (𝑥 = 𝐸 → ((𝐷‘𝑥) = 0 ↔ (𝐷‘𝐸) = 0 ))
20	18, 19	imbi12d 344	. . . . . 6 ⊢ (𝑥 = 𝐸 → (((𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝑥𝑤) = (𝑧𝑥𝑤)) → (𝐷‘𝑥) = 0 ) ↔ ((𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝐸𝑤) = (𝑧𝐸𝑤)) → (𝐷‘𝐸) = 0 )))
21	20	ralbidv 3174	. . . . 5 ⊢ (𝑥 = 𝐸 → (∀𝑧 ∈ 𝑁 ((𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝑥𝑤) = (𝑧𝑥𝑤)) → (𝐷‘𝑥) = 0 ) ↔ ∀𝑧 ∈ 𝑁 ((𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝐸𝑤) = (𝑧𝐸𝑤)) → (𝐷‘𝐸) = 0 )))
22		neeq1 3006	. . . . . . . 8 ⊢ (𝑦 = 𝐹 → (𝑦 ≠ 𝑧 ↔ 𝐹 ≠ 𝑧))
23		oveq1 7364	. . . . . . . . . 10 ⊢ (𝑦 = 𝐹 → (𝑦𝐸𝑤) = (𝐹𝐸𝑤))
24	23	eqeq1d 2738	. . . . . . . . 9 ⊢ (𝑦 = 𝐹 → ((𝑦𝐸𝑤) = (𝑧𝐸𝑤) ↔ (𝐹𝐸𝑤) = (𝑧𝐸𝑤)))
25	24	ralbidv 3174	. . . . . . . 8 ⊢ (𝑦 = 𝐹 → (∀𝑤 ∈ 𝑁 (𝑦𝐸𝑤) = (𝑧𝐸𝑤) ↔ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝑧𝐸𝑤)))
26	22, 25	anbi12d 631	. . . . . . 7 ⊢ (𝑦 = 𝐹 → ((𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝐸𝑤) = (𝑧𝐸𝑤)) ↔ (𝐹 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝑧𝐸𝑤))))
27	26	imbi1d 341	. . . . . 6 ⊢ (𝑦 = 𝐹 → (((𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝐸𝑤) = (𝑧𝐸𝑤)) → (𝐷‘𝐸) = 0 ) ↔ ((𝐹 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝑧𝐸𝑤)) → (𝐷‘𝐸) = 0 )))
28	27	ralbidv 3174	. . . . 5 ⊢ (𝑦 = 𝐹 → (∀𝑧 ∈ 𝑁 ((𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝐸𝑤) = (𝑧𝐸𝑤)) → (𝐷‘𝐸) = 0 ) ↔ ∀𝑧 ∈ 𝑁 ((𝐹 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝑧𝐸𝑤)) → (𝐷‘𝐸) = 0 )))
29	21, 28	rspc2va 3591	. . . 4 ⊢ (((𝐸 ∈ 𝐵 ∧ 𝐹 ∈ 𝑁) ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝑁 ∀𝑧 ∈ 𝑁 ((𝑦 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝑦𝑥𝑤) = (𝑧𝑥𝑤)) → (𝐷‘𝑥) = 0 )) → ∀𝑧 ∈ 𝑁 ((𝐹 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝑧𝐸𝑤)) → (𝐷‘𝐸) = 0 ))
30	9, 10, 13, 29	syl21anc 836	. . 3 ⊢ (((𝜑 ∧ 𝐸 ∈ 𝐵 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) ∧ (𝐹 ∈ 𝑁 ∧ 𝐺 ∈ 𝑁 ∧ 𝐹 ≠ 𝐺)) → ∀𝑧 ∈ 𝑁 ((𝐹 ≠ 𝑧 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝑧𝐸𝑤)) → (𝐷‘𝐸) = 0 ))
31		simpr2 1195	. . 3 ⊢ (((𝜑 ∧ 𝐸 ∈ 𝐵 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) ∧ (𝐹 ∈ 𝑁 ∧ 𝐺 ∈ 𝑁 ∧ 𝐹 ≠ 𝐺)) → 𝐺 ∈ 𝑁)
32	8, 30, 31	rspcdva 3582	. 2 ⊢ (((𝜑 ∧ 𝐸 ∈ 𝐵 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) ∧ (𝐹 ∈ 𝑁 ∧ 𝐺 ∈ 𝑁 ∧ 𝐹 ≠ 𝐺)) → ((𝐹 ≠ 𝐺 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) → (𝐷‘𝐸) = 0 ))
33	1, 2, 32	mp2and 697	1 ⊢ (((𝜑 ∧ 𝐸 ∈ 𝐵 ∧ ∀𝑤 ∈ 𝑁 (𝐹𝐸𝑤) = (𝐺𝐸𝑤)) ∧ (𝐹 ∈ 𝑁 ∧ 𝐺 ∈ 𝑁 ∧ 𝐹 ≠ 𝐺)) → (𝐷‘𝐸) = 0 )

Syntax hints:   → wi 4   ∧ wa 396   ∧ w3a 1087   = wceq 1541   ∈ wcel 2106   ≠ wne 2943  ∀wral 3064   ∖ cdif 3907  {csn 4586   × cxp 5631   ↾ cres 5635  ⟶wf 6492  ‘cfv 6496  (class class class)co 7357   ∘_f cof 7615  Fincfn 8883  Basecbs 17083  +_gcplusg 17133  ._rcmulr 17134  0_gc0g 17321  1_rcur 19913  Ringcrg 19964   Mat cmat 21754

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-ext 2707

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 846  df-3an 1089  df-tru 1544  df-fal 1554  df-ex 1782  df-sb 2068  df-clab 2714  df-cleq 2728  df-clel 2814  df-ne 2944  df-ral 3065  df-rab 3408  df-v 3447  df-dif 3913  df-un 3915  df-in 3917  df-ss 3927  df-nul 4283  df-if 4487  df-sn 4587  df-pr 4589  df-op 4593  df-uni 4866  df-br 5106  df-iota 6448  df-fv 6504  df-ov 7360

This theorem is referenced by:  mdetunilem2  21962  mdetuni0  21970