Theorem fargshiftfva 43085

Description: The values of a shifted function correspond to the value of the original function. (Contributed by Alexander van der Vekens, 24-Nov-2017.)

Hypothesis

Ref	Expression
fargshift.g	⊢ 𝐺 = (𝑥 ∈ (0..^(♯‘𝐹)) ↦ (𝐹‘(𝑥 + 1)))

Assertion

Ref	Expression
fargshiftfva	⊢ ((𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸) → (∀𝑘 ∈ (1...𝑁)(𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃 → ∀𝑙 ∈ (0..^𝑁)(𝐸‘(𝐺‘𝑙)) = ⦋(𝑙 + 1) / 𝑥⦌𝑃))

Distinct variable groups:   𝑥,𝐹   𝑥,𝐸   𝑘,𝐹,𝑙,𝑥   𝑥,𝑁   𝑘,𝐸   𝑘,𝐺   𝑘,𝑁   𝑃,𝑘   𝐸,𝑙   𝑁,𝑙   𝑃,𝑙

Allowed substitution hints:   𝑃(𝑥)   𝐺(𝑥,𝑙)

Proof of Theorem fargshiftfva

Step	Hyp	Ref	Expression
1		fz0add1fz1 12957	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁)) → (𝑙 + 1) ∈ (1...𝑁))
2		simpl 483	. . . . . . . . . . 11 ⊢ (((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) → (𝑙 + 1) ∈ (1...𝑁))
3	2	adantr 481	. . . . . . . . . 10 ⊢ ((((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) ∧ 𝐹:(1...𝑁)⟶dom 𝐸) → (𝑙 + 1) ∈ (1...𝑁))
4		2fveq3 6543	. . . . . . . . . . . . 13 ⊢ (𝑘 = (𝑙 + 1) → (𝐸‘(𝐹‘𝑘)) = (𝐸‘(𝐹‘(𝑙 + 1))))
5		csbeq1 3814	. . . . . . . . . . . . 13 ⊢ (𝑘 = (𝑙 + 1) → ⦋𝑘 / 𝑥⦌𝑃 = ⦋(𝑙 + 1) / 𝑥⦌𝑃)
6	4, 5	eqeq12d 2810	. . . . . . . . . . . 12 ⊢ (𝑘 = (𝑙 + 1) → ((𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃 ↔ (𝐸‘(𝐹‘(𝑙 + 1))) = ⦋(𝑙 + 1) / 𝑥⦌𝑃))
7	6	adantl 482	. . . . . . . . . . 11 ⊢ (((((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) ∧ 𝐹:(1...𝑁)⟶dom 𝐸) ∧ 𝑘 = (𝑙 + 1)) → ((𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃 ↔ (𝐸‘(𝐹‘(𝑙 + 1))) = ⦋(𝑙 + 1) / 𝑥⦌𝑃))
8		simpl 483	. . . . . . . . . . . . . . . 16 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁)) → 𝑁 ∈ ℕ0)
9	8	adantl 482	. . . . . . . . . . . . . . 15 ⊢ (((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) → 𝑁 ∈ ℕ0)
10	9	anim1i 614	. . . . . . . . . . . . . 14 ⊢ ((((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) ∧ 𝐹:(1...𝑁)⟶dom 𝐸) → (𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸))
11	10	adantr 481	. . . . . . . . . . . . 13 ⊢ (((((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) ∧ 𝐹:(1...𝑁)⟶dom 𝐸) ∧ 𝑘 = (𝑙 + 1)) → (𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸))
12		simpr 485	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁)) → 𝑙 ∈ (0..^𝑁))
13	12	ad3antlr 727	. . . . . . . . . . . . 13 ⊢ (((((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) ∧ 𝐹:(1...𝑁)⟶dom 𝐸) ∧ 𝑘 = (𝑙 + 1)) → 𝑙 ∈ (0..^𝑁))
14		fargshift.g	. . . . . . . . . . . . . . . 16 ⊢ 𝐺 = (𝑥 ∈ (0..^(♯‘𝐹)) ↦ (𝐹‘(𝑥 + 1)))
15	14	fargshiftfv 43081	. . . . . . . . . . . . . . 15 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸) → (𝑙 ∈ (0..^𝑁) → (𝐺‘𝑙) = (𝐹‘(𝑙 + 1))))
16	15	imp 407	. . . . . . . . . . . . . 14 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸) ∧ 𝑙 ∈ (0..^𝑁)) → (𝐺‘𝑙) = (𝐹‘(𝑙 + 1)))
17	16	eqcomd 2801	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸) ∧ 𝑙 ∈ (0..^𝑁)) → (𝐹‘(𝑙 + 1)) = (𝐺‘𝑙))
18	11, 13, 17	syl2anc 584	. . . . . . . . . . . 12 ⊢ (((((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) ∧ 𝐹:(1...𝑁)⟶dom 𝐸) ∧ 𝑘 = (𝑙 + 1)) → (𝐹‘(𝑙 + 1)) = (𝐺‘𝑙))
19	18	fveqeq2d 6546	. . . . . . . . . . 11 ⊢ (((((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) ∧ 𝐹:(1...𝑁)⟶dom 𝐸) ∧ 𝑘 = (𝑙 + 1)) → ((𝐸‘(𝐹‘(𝑙 + 1))) = ⦋(𝑙 + 1) / 𝑥⦌𝑃 ↔ (𝐸‘(𝐺‘𝑙)) = ⦋(𝑙 + 1) / 𝑥⦌𝑃))
20	7, 19	bitrd 280	. . . . . . . . . 10 ⊢ (((((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) ∧ 𝐹:(1...𝑁)⟶dom 𝐸) ∧ 𝑘 = (𝑙 + 1)) → ((𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃 ↔ (𝐸‘(𝐺‘𝑙)) = ⦋(𝑙 + 1) / 𝑥⦌𝑃))
21	3, 20	rspcdv 3562	. . . . . . . . 9 ⊢ ((((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) ∧ 𝐹:(1...𝑁)⟶dom 𝐸) → (∀𝑘 ∈ (1...𝑁)(𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃 → (𝐸‘(𝐺‘𝑙)) = ⦋(𝑙 + 1) / 𝑥⦌𝑃))
22	21	ex 413	. . . . . . . 8 ⊢ (((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) → (𝐹:(1...𝑁)⟶dom 𝐸 → (∀𝑘 ∈ (1...𝑁)(𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃 → (𝐸‘(𝐺‘𝑙)) = ⦋(𝑙 + 1) / 𝑥⦌𝑃)))
23	22	com23 86	. . . . . . 7 ⊢ (((𝑙 + 1) ∈ (1...𝑁) ∧ (𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁))) → (∀𝑘 ∈ (1...𝑁)(𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃 → (𝐹:(1...𝑁)⟶dom 𝐸 → (𝐸‘(𝐺‘𝑙)) = ⦋(𝑙 + 1) / 𝑥⦌𝑃)))
24	1, 23	mpancom 684	. . . . . 6 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝑙 ∈ (0..^𝑁)) → (∀𝑘 ∈ (1...𝑁)(𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃 → (𝐹:(1...𝑁)⟶dom 𝐸 → (𝐸‘(𝐺‘𝑙)) = ⦋(𝑙 + 1) / 𝑥⦌𝑃)))
25	24	ex 413	. . . . 5 ⊢ (𝑁 ∈ ℕ0 → (𝑙 ∈ (0..^𝑁) → (∀𝑘 ∈ (1...𝑁)(𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃 → (𝐹:(1...𝑁)⟶dom 𝐸 → (𝐸‘(𝐺‘𝑙)) = ⦋(𝑙 + 1) / 𝑥⦌𝑃))))
26	25	com24 95	. . . 4 ⊢ (𝑁 ∈ ℕ0 → (𝐹:(1...𝑁)⟶dom 𝐸 → (∀𝑘 ∈ (1...𝑁)(𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃 → (𝑙 ∈ (0..^𝑁) → (𝐸‘(𝐺‘𝑙)) = ⦋(𝑙 + 1) / 𝑥⦌𝑃))))
27	26	imp31 418	. . 3 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸) ∧ ∀𝑘 ∈ (1...𝑁)(𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃) → (𝑙 ∈ (0..^𝑁) → (𝐸‘(𝐺‘𝑙)) = ⦋(𝑙 + 1) / 𝑥⦌𝑃))
28	27	ralrimiv 3148	. 2 ⊢ (((𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸) ∧ ∀𝑘 ∈ (1...𝑁)(𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃) → ∀𝑙 ∈ (0..^𝑁)(𝐸‘(𝐺‘𝑙)) = ⦋(𝑙 + 1) / 𝑥⦌𝑃)
29	28	ex 413	1 ⊢ ((𝑁 ∈ ℕ0 ∧ 𝐹:(1...𝑁)⟶dom 𝐸) → (∀𝑘 ∈ (1...𝑁)(𝐸‘(𝐹‘𝑘)) = ⦋𝑘 / 𝑥⦌𝑃 → ∀𝑙 ∈ (0..^𝑁)(𝐸‘(𝐺‘𝑙)) = ⦋(𝑙 + 1) / 𝑥⦌𝑃))

Syntax hints:   → wi 4   ↔ wb 207   ∧ wa 396   = wceq 1522   ∈ wcel 2081  ∀wral 3105  ⦋csb 3811   ↦ cmpt 5041  dom cdm 5443  ⟶wf 6221  ‘cfv 6225  (class class class)co 7016  0cc0 10383  1c1 10384   + caddc 10386  ℕ₀cn0 11745  ...cfz 12742  ..^cfzo 12883  ♯chash 13540

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1777  ax-4 1791  ax-5 1888  ax-6 1947  ax-7 1992  ax-8 2083  ax-9 2091  ax-10 2112  ax-11 2126  ax-12 2141  ax-13 2344  ax-ext 2769  ax-rep 5081  ax-sep 5094  ax-nul 5101  ax-pow 5157  ax-pr 5221  ax-un 7319  ax-cnex 10439  ax-resscn 10440  ax-1cn 10441  ax-icn 10442  ax-addcl 10443  ax-addrcl 10444  ax-mulcl 10445  ax-mulrcl 10446  ax-mulcom 10447  ax-addass 10448  ax-mulass 10449  ax-distr 10450  ax-i2m1 10451  ax-1ne0 10452  ax-1rid 10453  ax-rnegex 10454  ax-rrecex 10455  ax-cnre 10456  ax-pre-lttri 10457  ax-pre-lttrn 10458  ax-pre-ltadd 10459  ax-pre-mulgt0 10460

This theorem depends on definitions:  df-bi 208  df-an 397  df-or 843  df-3or 1081  df-3an 1082  df-tru 1525  df-ex 1762  df-nf 1766  df-sb 2043  df-mo 2576  df-eu 2612  df-clab 2776  df-cleq 2788  df-clel 2863  df-nfc 2935  df-ne 2985  df-nel 3091  df-ral 3110  df-rex 3111  df-reu 3112  df-rab 3114  df-v 3439  df-sbc 3707  df-csb 3812  df-dif 3862  df-un 3864  df-in 3866  df-ss 3874  df-pss 3876  df-nul 4212  df-if 4382  df-pw 4455  df-sn 4473  df-pr 4475  df-tp 4477  df-op 4479  df-uni 4746  df-int 4783  df-iun 4827  df-br 4963  df-opab 5025  df-mpt 5042  df-tr 5064  df-id 5348  df-eprel 5353  df-po 5362  df-so 5363  df-fr 5402  df-we 5404  df-xp 5449  df-rel 5450  df-cnv 5451  df-co 5452  df-dm 5453  df-rn 5454  df-res 5455  df-ima 5456  df-pred 6023  df-ord 6069  df-on 6070  df-lim 6071  df-suc 6072  df-iota 6189  df-fun 6227  df-fn 6228  df-f 6229  df-f1 6230  df-fo 6231  df-f1o 6232  df-fv 6233  df-riota 6977  df-ov 7019  df-oprab 7020  df-mpo 7021  df-om 7437  df-1st 7545  df-2nd 7546  df-wrecs 7798  df-recs 7860  df-rdg 7898  df-1o 7953  df-er 8139  df-en 8358  df-dom 8359  df-sdom 8360  df-fin 8361  df-card 9214  df-pnf 10523  df-mnf 10524  df-xr 10525  df-ltxr 10526  df-le 10527  df-sub 10719  df-neg 10720  df-nn 11487  df-n0 11746  df-z 11830  df-uz 12094  df-fz 12743  df-fzo 12884  df-hash 13541

This theorem is referenced by: (None)