lmatfvlem - Mathbox for Thierry Arnoux

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Theorem lmatfvlem 32784

Description: Useful lemma to extract literal matrix entries. Suggested by Mario Carneiro. (Contributed by Thierry Arnoux, 3-Sep-2020.)

**Hypotheses**
Ref	Expression
lmatfval.m	⊢ 𝑀 = (litMat‘𝑊)
lmatfval.n	⊢ (𝜑 → 𝑁 ∈ ℕ)
lmatfval.w	⊢ (𝜑 → 𝑊 ∈ Word Word 𝑉)
lmatfval.1	⊢ (𝜑 → (♯‘𝑊) = 𝑁)
lmatfval.2	⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑁)) → (♯‘(𝑊‘𝑖)) = 𝑁)
lmatfvlem.1	⊢ 𝐾 ∈ ℕ₀
lmatfvlem.2	⊢ 𝐿 ∈ ℕ₀
lmatfvlem.3	⊢ 𝐼 ≤ 𝑁
lmatfvlem.4	⊢ 𝐽 ≤ 𝑁
lmatfvlem.5	⊢ (𝐾 + 1) = 𝐼
lmatfvlem.6	⊢ (𝐿 + 1) = 𝐽
lmatfvlem.7	⊢ (𝑊‘𝐾) = 𝑋
lmatfvlem.8	⊢ (𝜑 → (𝑋‘𝐿) = 𝑌)

**Assertion**
Ref	Expression
lmatfvlem	⊢ (𝜑 → (𝐼𝑀𝐽) = 𝑌)

Distinct variable groups: 𝑖,𝑀 𝑖,𝐼 𝑖,𝐽 𝑖,𝑁 𝑖,𝑊 𝜑,𝑖 Allowed substitution hints: 𝐾(𝑖) 𝐿(𝑖) 𝑉(𝑖) 𝑋(𝑖) 𝑌(𝑖)

**Proof of Theorem lmatfvlem**
Step	Hyp	Ref	Expression
1		lmatfval.m	. . 3 ⊢ 𝑀 = (litMat‘𝑊)
2		lmatfval.n	. . 3 ⊢ (𝜑 → 𝑁 ∈ ℕ)
3		lmatfval.w	. . 3 ⊢ (𝜑 → 𝑊 ∈ Word Word 𝑉)
4		lmatfval.1	. . 3 ⊢ (𝜑 → (♯‘𝑊) = 𝑁)
5		lmatfval.2	. . 3 ⊢ ((𝜑 ∧ 𝑖 ∈ (0..^𝑁)) → (♯‘(𝑊‘𝑖)) = 𝑁)
6		lmatfvlem.5	. . . . . . . 8 ⊢ (𝐾 + 1) = 𝐼
7		lmatfvlem.1	. . . . . . . . 9 ⊢ 𝐾 ∈ ℕ₀
8		nn0p1nn 12508	. . . . . . . . 9 ⊢ (𝐾 ∈ ℕ₀ → (𝐾 + 1) ∈ ℕ)
9	7, 8	ax-mp 5	. . . . . . . 8 ⊢ (𝐾 + 1) ∈ ℕ
10	6, 9	eqeltrri 2831	. . . . . . 7 ⊢ 𝐼 ∈ ℕ
11		nnge1 12237	. . . . . . 7 ⊢ (𝐼 ∈ ℕ → 1 ≤ 𝐼)
12	10, 11	ax-mp 5	. . . . . 6 ⊢ 1 ≤ 𝐼
13		lmatfvlem.3	. . . . . 6 ⊢ 𝐼 ≤ 𝑁
14	12, 13	pm3.2i 472	. . . . 5 ⊢ (1 ≤ 𝐼 ∧ 𝐼 ≤ 𝑁)
15	14	a1i 11	. . . 4 ⊢ (𝜑 → (1 ≤ 𝐼 ∧ 𝐼 ≤ 𝑁))
16		nnz 12576	. . . . . . 7 ⊢ (𝐼 ∈ ℕ → 𝐼 ∈ ℤ)
17	10, 16	ax-mp 5	. . . . . 6 ⊢ 𝐼 ∈ ℤ
18	17	a1i 11	. . . . 5 ⊢ (𝜑 → 𝐼 ∈ ℤ)
19		1z 12589	. . . . . 6 ⊢ 1 ∈ ℤ
20	19	a1i 11	. . . . 5 ⊢ (𝜑 → 1 ∈ ℤ)
21	2	nnzd 12582	. . . . 5 ⊢ (𝜑 → 𝑁 ∈ ℤ)
22		elfz 13487	. . . . 5 ⊢ ((𝐼 ∈ ℤ ∧ 1 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐼 ∈ (1...𝑁) ↔ (1 ≤ 𝐼 ∧ 𝐼 ≤ 𝑁)))
23	18, 20, 21, 22	syl3anc 1372	. . . 4 ⊢ (𝜑 → (𝐼 ∈ (1...𝑁) ↔ (1 ≤ 𝐼 ∧ 𝐼 ≤ 𝑁)))
24	15, 23	mpbird 257	. . 3 ⊢ (𝜑 → 𝐼 ∈ (1...𝑁))
25		lmatfvlem.6	. . . . . . . 8 ⊢ (𝐿 + 1) = 𝐽
26		lmatfvlem.2	. . . . . . . . 9 ⊢ 𝐿 ∈ ℕ₀
27		nn0p1nn 12508	. . . . . . . . 9 ⊢ (𝐿 ∈ ℕ₀ → (𝐿 + 1) ∈ ℕ)
28	26, 27	ax-mp 5	. . . . . . . 8 ⊢ (𝐿 + 1) ∈ ℕ
29	25, 28	eqeltrri 2831	. . . . . . 7 ⊢ 𝐽 ∈ ℕ
30		nnge1 12237	. . . . . . 7 ⊢ (𝐽 ∈ ℕ → 1 ≤ 𝐽)
31	29, 30	ax-mp 5	. . . . . 6 ⊢ 1 ≤ 𝐽
32		lmatfvlem.4	. . . . . 6 ⊢ 𝐽 ≤ 𝑁
33	31, 32	pm3.2i 472	. . . . 5 ⊢ (1 ≤ 𝐽 ∧ 𝐽 ≤ 𝑁)
34	33	a1i 11	. . . 4 ⊢ (𝜑 → (1 ≤ 𝐽 ∧ 𝐽 ≤ 𝑁))
35		nnz 12576	. . . . . . 7 ⊢ (𝐽 ∈ ℕ → 𝐽 ∈ ℤ)
36	29, 35	ax-mp 5	. . . . . 6 ⊢ 𝐽 ∈ ℤ
37	36	a1i 11	. . . . 5 ⊢ (𝜑 → 𝐽 ∈ ℤ)
38		elfz 13487	. . . . 5 ⊢ ((𝐽 ∈ ℤ ∧ 1 ∈ ℤ ∧ 𝑁 ∈ ℤ) → (𝐽 ∈ (1...𝑁) ↔ (1 ≤ 𝐽 ∧ 𝐽 ≤ 𝑁)))
39	37, 20, 21, 38	syl3anc 1372	. . . 4 ⊢ (𝜑 → (𝐽 ∈ (1...𝑁) ↔ (1 ≤ 𝐽 ∧ 𝐽 ≤ 𝑁)))
40	34, 39	mpbird 257	. . 3 ⊢ (𝜑 → 𝐽 ∈ (1...𝑁))
41	1, 2, 3, 4, 5, 24, 40	lmatfval 32783	. 2 ⊢ (𝜑 → (𝐼𝑀𝐽) = ((𝑊‘(𝐼 − 1))‘(𝐽 − 1)))
42	7	nn0cni 12481	. . . . . . . 8 ⊢ 𝐾 ∈ ℂ
43		ax-1cn 11165	. . . . . . . 8 ⊢ 1 ∈ ℂ
44	42, 43	pncan3oi 11473	. . . . . . 7 ⊢ ((𝐾 + 1) − 1) = 𝐾
45	6	oveq1i 7416	. . . . . . 7 ⊢ ((𝐾 + 1) − 1) = (𝐼 − 1)
46	44, 45	eqtr3i 2763	. . . . . 6 ⊢ 𝐾 = (𝐼 − 1)
47	46	fveq2i 6892	. . . . 5 ⊢ (𝑊‘𝐾) = (𝑊‘(𝐼 − 1))
48		lmatfvlem.7	. . . . 5 ⊢ (𝑊‘𝐾) = 𝑋
49	47, 48	eqtr3i 2763	. . . 4 ⊢ (𝑊‘(𝐼 − 1)) = 𝑋
50	49	a1i 11	. . 3 ⊢ (𝜑 → (𝑊‘(𝐼 − 1)) = 𝑋)
51	50	fveq1d 6891	. 2 ⊢ (𝜑 → ((𝑊‘(𝐼 − 1))‘(𝐽 − 1)) = (𝑋‘(𝐽 − 1)))
52	26	nn0cni 12481	. . . . . . 7 ⊢ 𝐿 ∈ ℂ
53	52, 43	pncan3oi 11473	. . . . . 6 ⊢ ((𝐿 + 1) − 1) = 𝐿
54	25	oveq1i 7416	. . . . . 6 ⊢ ((𝐿 + 1) − 1) = (𝐽 − 1)
55	53, 54	eqtr3i 2763	. . . . 5 ⊢ 𝐿 = (𝐽 − 1)
56	55	a1i 11	. . . 4 ⊢ (𝜑 → 𝐿 = (𝐽 − 1))
57	56	fveq2d 6893	. . 3 ⊢ (𝜑 → (𝑋‘𝐿) = (𝑋‘(𝐽 − 1)))
58		lmatfvlem.8	. . 3 ⊢ (𝜑 → (𝑋‘𝐿) = 𝑌)
59	57, 58	eqtr3d 2775	. 2 ⊢ (𝜑 → (𝑋‘(𝐽 − 1)) = 𝑌)
60	41, 51, 59	3eqtrd 2777	1 ⊢ (𝜑 → (𝐼𝑀𝐽) = 𝑌)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 = wceq 1542 ∈ wcel 2107 class class class wbr 5148 ‘cfv 6541 (class class class)co 7406 0cc0 11107 1c1 11108 + caddc 11110 ≤ cle 11246 − cmin 11441 ℕcn 12209 ℕ₀cn0 12469 ℤcz 12555 ...cfz 13481 ..^cfzo 13624 ♯chash 14287 Word cword 14461 litMatclmat 32780

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7722 ax-cnex 11163 ax-resscn 11164 ax-1cn 11165 ax-icn 11166 ax-addcl 11167 ax-addrcl 11168 ax-mulcl 11169 ax-mulrcl 11170 ax-mulcom 11171 ax-addass 11172 ax-mulass 11173 ax-distr 11174 ax-i2m1 11175 ax-1ne0 11176 ax-1rid 11177 ax-rnegex 11178 ax-rrecex 11179 ax-cnre 11180 ax-pre-lttri 11181 ax-pre-lttrn 11182 ax-pre-ltadd 11183 ax-pre-mulgt0 11184

This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-int 4951 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6298 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6493 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7362 df-ov 7409 df-oprab 7410 df-mpo 7411 df-om 7853 df-1st 7972 df-2nd 7973 df-frecs 8263 df-wrecs 8294 df-recs 8368 df-rdg 8407 df-1o 8463 df-er 8700 df-en 8937 df-dom 8938 df-sdom 8939 df-fin 8940 df-card 9931 df-pnf 11247 df-mnf 11248 df-xr 11249 df-ltxr 11250 df-le 11251 df-sub 11443 df-neg 11444 df-nn 12210 df-n0 12470 df-z 12556 df-uz 12820 df-fz 13482 df-fzo 13625 df-hash 14288 df-word 14462 df-lmat 32781

This theorem is referenced by: lmat22e12 32788 lmat22e21 32789 lmat22e22 32790

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