Theorem seqof2 12721

Description: Distribute function operation through a sequence. Maps-to notation version of seqof 12720. (Contributed by Mario Carneiro, 7-Jul-2017.)

Hypotheses

Ref	Expression
seqof2.1	⊢ (𝜑 → 𝐴 ∈ 𝑉)
seqof2.2	⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀))
seqof2.3	⊢ (𝜑 → (𝑀...𝑁) ⊆ 𝐵)
seqof2.4	⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑧 ∈ 𝐴)) → 𝑋 ∈ 𝑊)

Assertion

Ref	Expression
seqof2	⊢ (𝜑 → (seq𝑀( ∘𝑓 + , (𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋)))‘𝑁) = (𝑧 ∈ 𝐴 ↦ (seq𝑀( + , (𝑥 ∈ 𝐵 ↦ 𝑋))‘𝑁)))

Distinct variable groups:   𝑥,𝑧,𝐴   𝑥,𝑀,𝑧   𝑥,𝑁,𝑧   𝜑,𝑥,𝑧   𝑧, +   𝑥,𝐵

Allowed substitution hints:   𝐵(𝑧)   + (𝑥)   𝑉(𝑥,𝑧)   𝑊(𝑥,𝑧)   𝑋(𝑥,𝑧)

Proof of Theorem seqof2

Dummy variables 𝑛 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		seqof2.1	. . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑉)
2		seqof2.2	. . 3 ⊢ (𝜑 → 𝑁 ∈ (ℤ≥‘𝑀))
3		nfv 1830	. . . . . 6 ⊢ Ⅎ𝑥(𝜑 ∧ 𝑛 ∈ (𝑀...𝑁))
4		nffvmpt1 6111	. . . . . . 7 ⊢ Ⅎ𝑥((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑛)
5		nfcv 2751	. . . . . . . 8 ⊢ Ⅎ𝑥𝐴
6		nffvmpt1 6111	. . . . . . . 8 ⊢ Ⅎ𝑥((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛)
7	5, 6	nfmpt 4674	. . . . . . 7 ⊢ Ⅎ𝑥(𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛))
8	4, 7	nfeq 2762	. . . . . 6 ⊢ Ⅎ𝑥((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑛) = (𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛))
9	3, 8	nfim 1813	. . . . 5 ⊢ Ⅎ𝑥((𝜑 ∧ 𝑛 ∈ (𝑀...𝑁)) → ((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑛) = (𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛)))
10		eleq1 2676	. . . . . . 7 ⊢ (𝑥 = 𝑛 → (𝑥 ∈ (𝑀...𝑁) ↔ 𝑛 ∈ (𝑀...𝑁)))
11	10	anbi2d 736	. . . . . 6 ⊢ (𝑥 = 𝑛 → ((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) ↔ (𝜑 ∧ 𝑛 ∈ (𝑀...𝑁))))
12		fveq2 6103	. . . . . . 7 ⊢ (𝑥 = 𝑛 → ((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑥) = ((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑛))
13		fveq2 6103	. . . . . . . 8 ⊢ (𝑥 = 𝑛 → ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑥) = ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛))
14	13	mpteq2dv 4673	. . . . . . 7 ⊢ (𝑥 = 𝑛 → (𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑥)) = (𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛)))
15	12, 14	eqeq12d 2625	. . . . . 6 ⊢ (𝑥 = 𝑛 → (((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑥) = (𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑥)) ↔ ((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑛) = (𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛))))
16	11, 15	imbi12d 333	. . . . 5 ⊢ (𝑥 = 𝑛 → (((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) → ((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑥) = (𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑥))) ↔ ((𝜑 ∧ 𝑛 ∈ (𝑀...𝑁)) → ((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑛) = (𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛)))))
17		seqof2.3	. . . . . . . 8 ⊢ (𝜑 → (𝑀...𝑁) ⊆ 𝐵)
18	17	sselda 3568	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) → 𝑥 ∈ 𝐵)
19	1	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) → 𝐴 ∈ 𝑉)
20		mptexg 6389	. . . . . . . 8 ⊢ (𝐴 ∈ 𝑉 → (𝑧 ∈ 𝐴 ↦ 𝑋) ∈ V)
21	19, 20	syl 17	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) → (𝑧 ∈ 𝐴 ↦ 𝑋) ∈ V)
22		eqid 2610	. . . . . . . 8 ⊢ (𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋)) = (𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))
23	22	fvmpt2 6200	. . . . . . 7 ⊢ ((𝑥 ∈ 𝐵 ∧ (𝑧 ∈ 𝐴 ↦ 𝑋) ∈ V) → ((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑥) = (𝑧 ∈ 𝐴 ↦ 𝑋))
24	18, 21, 23	syl2anc 691	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) → ((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑥) = (𝑧 ∈ 𝐴 ↦ 𝑋))
25	18	adantr 480	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) ∧ 𝑧 ∈ 𝐴) → 𝑥 ∈ 𝐵)
26		simpll 786	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) ∧ 𝑧 ∈ 𝐴) → 𝜑)
27		simpr 476	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) ∧ 𝑧 ∈ 𝐴) → 𝑧 ∈ 𝐴)
28		seqof2.4	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑧 ∈ 𝐴)) → 𝑋 ∈ 𝑊)
29	26, 25, 27, 28	syl12anc 1316	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) ∧ 𝑧 ∈ 𝐴) → 𝑋 ∈ 𝑊)
30		eqid 2610	. . . . . . . . 9 ⊢ (𝑥 ∈ 𝐵 ↦ 𝑋) = (𝑥 ∈ 𝐵 ↦ 𝑋)
31	30	fvmpt2 6200	. . . . . . . 8 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑋 ∈ 𝑊) → ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑥) = 𝑋)
32	25, 29, 31	syl2anc 691	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) ∧ 𝑧 ∈ 𝐴) → ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑥) = 𝑋)
33	32	mpteq2dva 4672	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) → (𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑥)) = (𝑧 ∈ 𝐴 ↦ 𝑋))
34	24, 33	eqtr4d 2647	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑀...𝑁)) → ((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑥) = (𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑥)))
35	9, 16, 34	chvar 2250	. . . 4 ⊢ ((𝜑 ∧ 𝑛 ∈ (𝑀...𝑁)) → ((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑛) = (𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛)))
36		nfcv 2751	. . . . 5 ⊢ Ⅎ𝑦((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛)
37		nfcsb1v 3515	. . . . . 6 ⊢ Ⅎ𝑧⦋𝑦 / 𝑧⦌(𝑥 ∈ 𝐵 ↦ 𝑋)
38		nfcv 2751	. . . . . 6 ⊢ Ⅎ𝑧𝑛
39	37, 38	nffv 6110	. . . . 5 ⊢ Ⅎ𝑧(⦋𝑦 / 𝑧⦌(𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛)
40		csbeq1a 3508	. . . . . 6 ⊢ (𝑧 = 𝑦 → (𝑥 ∈ 𝐵 ↦ 𝑋) = ⦋𝑦 / 𝑧⦌(𝑥 ∈ 𝐵 ↦ 𝑋))
41	40	fveq1d 6105	. . . . 5 ⊢ (𝑧 = 𝑦 → ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛) = (⦋𝑦 / 𝑧⦌(𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛))
42	36, 39, 41	cbvmpt 4677	. . . 4 ⊢ (𝑧 ∈ 𝐴 ↦ ((𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛)) = (𝑦 ∈ 𝐴 ↦ (⦋𝑦 / 𝑧⦌(𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛))
43	35, 42	syl6eq 2660	. . 3 ⊢ ((𝜑 ∧ 𝑛 ∈ (𝑀...𝑁)) → ((𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋))‘𝑛) = (𝑦 ∈ 𝐴 ↦ (⦋𝑦 / 𝑧⦌(𝑥 ∈ 𝐵 ↦ 𝑋)‘𝑛)))
44	1, 2, 43	seqof 12720	. 2 ⊢ (𝜑 → (seq𝑀( ∘𝑓 + , (𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋)))‘𝑁) = (𝑦 ∈ 𝐴 ↦ (seq𝑀( + , ⦋𝑦 / 𝑧⦌(𝑥 ∈ 𝐵 ↦ 𝑋))‘𝑁)))
45		nfcv 2751	. . 3 ⊢ Ⅎ𝑦(seq𝑀( + , (𝑥 ∈ 𝐵 ↦ 𝑋))‘𝑁)
46		nfcv 2751	. . . . 5 ⊢ Ⅎ𝑧𝑀
47		nfcv 2751	. . . . 5 ⊢ Ⅎ𝑧 +
48	46, 47, 37	nfseq 12673	. . . 4 ⊢ Ⅎ𝑧seq𝑀( + , ⦋𝑦 / 𝑧⦌(𝑥 ∈ 𝐵 ↦ 𝑋))
49		nfcv 2751	. . . 4 ⊢ Ⅎ𝑧𝑁
50	48, 49	nffv 6110	. . 3 ⊢ Ⅎ𝑧(seq𝑀( + , ⦋𝑦 / 𝑧⦌(𝑥 ∈ 𝐵 ↦ 𝑋))‘𝑁)
51	40	seqeq3d 12671	. . . 4 ⊢ (𝑧 = 𝑦 → seq𝑀( + , (𝑥 ∈ 𝐵 ↦ 𝑋)) = seq𝑀( + , ⦋𝑦 / 𝑧⦌(𝑥 ∈ 𝐵 ↦ 𝑋)))
52	51	fveq1d 6105	. . 3 ⊢ (𝑧 = 𝑦 → (seq𝑀( + , (𝑥 ∈ 𝐵 ↦ 𝑋))‘𝑁) = (seq𝑀( + , ⦋𝑦 / 𝑧⦌(𝑥 ∈ 𝐵 ↦ 𝑋))‘𝑁))
53	45, 50, 52	cbvmpt 4677	. 2 ⊢ (𝑧 ∈ 𝐴 ↦ (seq𝑀( + , (𝑥 ∈ 𝐵 ↦ 𝑋))‘𝑁)) = (𝑦 ∈ 𝐴 ↦ (seq𝑀( + , ⦋𝑦 / 𝑧⦌(𝑥 ∈ 𝐵 ↦ 𝑋))‘𝑁))
54	44, 53	syl6eqr 2662	1 ⊢ (𝜑 → (seq𝑀( ∘𝑓 + , (𝑥 ∈ 𝐵 ↦ (𝑧 ∈ 𝐴 ↦ 𝑋)))‘𝑁) = (𝑧 ∈ 𝐴 ↦ (seq𝑀( + , (𝑥 ∈ 𝐵 ↦ 𝑋))‘𝑁)))

Syntax hints:   → wi 4   ∧ wa 383   = wceq 1475   ∈ wcel 1977  Vcvv 3173  ⦋csb 3499   ⊆ wss 3540   ↦ cmpt 4643  ‘cfv 5804  (class class class)co 6549   ∘_𝑓 cof 6793  ℤ_≥cuz 11563  ...cfz 12197  seqcseq 12663

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-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-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-iun 4457  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-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-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-of 6795  df-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-er 7629  df-en 7842  df-dom 7843  df-sdom 7844  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-n0 11170  df-z 11255  df-uz 11564  df-fz 12198  df-seq 12664

This theorem is referenced by:  mtestbdd  23963  lgamgulm2  24562  lgamcvglem  24566