cycpmfv1 - Mathbox for Thierry Arnoux

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Theorem cycpmfv1 32259

Description: Value of a cycle function for any element but the last. (Contributed by Thierry Arnoux, 22-Sep-2023.)

**Hypotheses**
Ref	Expression
tocycval.1	⊢ 𝐶 = (toCyc‘𝐷)
tocycfv.d	⊢ (𝜑 → 𝐷 ∈ 𝑉)
tocycfv.w	⊢ (𝜑 → 𝑊 ∈ Word 𝐷)
tocycfv.1	⊢ (𝜑 → 𝑊:dom 𝑊–1-1→𝐷)
cycpmfv1.1	⊢ (𝜑 → 𝑁 ∈ (0..^((♯‘𝑊) − 1)))

**Assertion**
Ref	Expression
cycpmfv1	⊢ (𝜑 → ((𝐶‘𝑊)‘(𝑊‘𝑁)) = (𝑊‘(𝑁 + 1)))

**Proof of Theorem cycpmfv1**
Step	Hyp	Ref	Expression
1		tocycval.1	. . 3 ⊢ 𝐶 = (toCyc‘𝐷)
2		tocycfv.d	. . 3 ⊢ (𝜑 → 𝐷 ∈ 𝑉)
3		tocycfv.w	. . 3 ⊢ (𝜑 → 𝑊 ∈ Word 𝐷)
4		tocycfv.1	. . 3 ⊢ (𝜑 → 𝑊:dom 𝑊–1-1→𝐷)
5		lencl 14479	. . . . . . 7 ⊢ (𝑊 ∈ Word 𝐷 → (♯‘𝑊) ∈ ℕ₀)
6	3, 5	syl 17	. . . . . 6 ⊢ (𝜑 → (♯‘𝑊) ∈ ℕ₀)
7	6	nn0zd 12580	. . . . 5 ⊢ (𝜑 → (♯‘𝑊) ∈ ℤ)
8		fzossrbm1 13657	. . . . 5 ⊢ ((♯‘𝑊) ∈ ℤ → (0..^((♯‘𝑊) − 1)) ⊆ (0..^(♯‘𝑊)))
9	7, 8	syl 17	. . . 4 ⊢ (𝜑 → (0..^((♯‘𝑊) − 1)) ⊆ (0..^(♯‘𝑊)))
10		cycpmfv1.1	. . . 4 ⊢ (𝜑 → 𝑁 ∈ (0..^((♯‘𝑊) − 1)))
11	9, 10	sseldd 3982	. . 3 ⊢ (𝜑 → 𝑁 ∈ (0..^(♯‘𝑊)))
12	1, 2, 3, 4, 11	cycpmfvlem 32258	. 2 ⊢ (𝜑 → ((𝐶‘𝑊)‘(𝑊‘𝑁)) = (((𝑊 cyclShift 1) ∘ ^◡𝑊)‘(𝑊‘𝑁)))
13		df-f1 6545	. . . . 5 ⊢ (𝑊:dom 𝑊–1-1→𝐷 ↔ (𝑊:dom 𝑊⟶𝐷 ∧ Fun ^◡𝑊))
14	4, 13	sylib 217	. . . 4 ⊢ (𝜑 → (𝑊:dom 𝑊⟶𝐷 ∧ Fun ^◡𝑊))
15	14	simprd 496	. . 3 ⊢ (𝜑 → Fun ^◡𝑊)
16		wrdfn 14474	. . . . . 6 ⊢ (𝑊 ∈ Word 𝐷 → 𝑊 Fn (0..^(♯‘𝑊)))
17	3, 16	syl 17	. . . . 5 ⊢ (𝜑 → 𝑊 Fn (0..^(♯‘𝑊)))
18		fnfvelrn 7079	. . . . 5 ⊢ ((𝑊 Fn (0..^(♯‘𝑊)) ∧ 𝑁 ∈ (0..^(♯‘𝑊))) → (𝑊‘𝑁) ∈ ran 𝑊)
19	17, 11, 18	syl2anc 584	. . . 4 ⊢ (𝜑 → (𝑊‘𝑁) ∈ ran 𝑊)
20		df-rn 5686	. . . 4 ⊢ ran 𝑊 = dom ^◡𝑊
21	19, 20	eleqtrdi 2843	. . 3 ⊢ (𝜑 → (𝑊‘𝑁) ∈ dom ^◡𝑊)
22		fvco 6986	. . 3 ⊢ ((Fun ^◡𝑊 ∧ (𝑊‘𝑁) ∈ dom ^◡𝑊) → (((𝑊 cyclShift 1) ∘ ^◡𝑊)‘(𝑊‘𝑁)) = ((𝑊 cyclShift 1)‘(^◡𝑊‘(𝑊‘𝑁))))
23	15, 21, 22	syl2anc 584	. 2 ⊢ (𝜑 → (((𝑊 cyclShift 1) ∘ ^◡𝑊)‘(𝑊‘𝑁)) = ((𝑊 cyclShift 1)‘(^◡𝑊‘(𝑊‘𝑁))))
24		f1f1orn 6841	. . . . . 6 ⊢ (𝑊:dom 𝑊–1-1→𝐷 → 𝑊:dom 𝑊–1-1-onto→ran 𝑊)
25	4, 24	syl 17	. . . . 5 ⊢ (𝜑 → 𝑊:dom 𝑊–1-1-onto→ran 𝑊)
26	17	fndmd 6651	. . . . . 6 ⊢ (𝜑 → dom 𝑊 = (0..^(♯‘𝑊)))
27	11, 26	eleqtrrd 2836	. . . . 5 ⊢ (𝜑 → 𝑁 ∈ dom 𝑊)
28		f1ocnvfv1 7270	. . . . 5 ⊢ ((𝑊:dom 𝑊–1-1-onto→ran 𝑊 ∧ 𝑁 ∈ dom 𝑊) → (^◡𝑊‘(𝑊‘𝑁)) = 𝑁)
29	25, 27, 28	syl2anc 584	. . . 4 ⊢ (𝜑 → (^◡𝑊‘(𝑊‘𝑁)) = 𝑁)
30	29	fveq2d 6892	. . 3 ⊢ (𝜑 → ((𝑊 cyclShift 1)‘(^◡𝑊‘(𝑊‘𝑁))) = ((𝑊 cyclShift 1)‘𝑁))
31		1zzd 12589	. . . 4 ⊢ (𝜑 → 1 ∈ ℤ)
32		cshwidxmod 14749	. . . 4 ⊢ ((𝑊 ∈ Word 𝐷 ∧ 1 ∈ ℤ ∧ 𝑁 ∈ (0..^(♯‘𝑊))) → ((𝑊 cyclShift 1)‘𝑁) = (𝑊‘((𝑁 + 1) mod (♯‘𝑊))))
33	3, 31, 11, 32	syl3anc 1371	. . 3 ⊢ (𝜑 → ((𝑊 cyclShift 1)‘𝑁) = (𝑊‘((𝑁 + 1) mod (♯‘𝑊))))
34		fzo0ss1 13658	. . . . . 6 ⊢ (1..^(♯‘𝑊)) ⊆ (0..^(♯‘𝑊))
35		fzoaddel2 13684	. . . . . . 7 ⊢ ((𝑁 ∈ (0..^((♯‘𝑊) − 1)) ∧ (♯‘𝑊) ∈ ℤ ∧ 1 ∈ ℤ) → (𝑁 + 1) ∈ (1..^(♯‘𝑊)))
36	10, 7, 31, 35	syl3anc 1371	. . . . . 6 ⊢ (𝜑 → (𝑁 + 1) ∈ (1..^(♯‘𝑊)))
37	34, 36	sselid 3979	. . . . 5 ⊢ (𝜑 → (𝑁 + 1) ∈ (0..^(♯‘𝑊)))
38		zmodidfzoimp 13862	. . . . 5 ⊢ ((𝑁 + 1) ∈ (0..^(♯‘𝑊)) → ((𝑁 + 1) mod (♯‘𝑊)) = (𝑁 + 1))
39	37, 38	syl 17	. . . 4 ⊢ (𝜑 → ((𝑁 + 1) mod (♯‘𝑊)) = (𝑁 + 1))
40	39	fveq2d 6892	. . 3 ⊢ (𝜑 → (𝑊‘((𝑁 + 1) mod (♯‘𝑊))) = (𝑊‘(𝑁 + 1)))
41	30, 33, 40	3eqtrd 2776	. 2 ⊢ (𝜑 → ((𝑊 cyclShift 1)‘(^◡𝑊‘(𝑊‘𝑁))) = (𝑊‘(𝑁 + 1)))
42	12, 23, 41	3eqtrd 2776	1 ⊢ (𝜑 → ((𝐶‘𝑊)‘(𝑊‘𝑁)) = (𝑊‘(𝑁 + 1)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 = wceq 1541 ∈ wcel 2106 ⊆ wss 3947 ^◡ccnv 5674 dom cdm 5675 ran crn 5676 ∘ ccom 5679 Fun wfun 6534 Fn wfn 6535 ⟶wf 6536 –1-1→wf1 6537 –1-1-onto→wf1o 6539 ‘cfv 6540 (class class class)co 7405 0cc0 11106 1c1 11107 + caddc 11109 − cmin 11440 ℕ₀cn0 12468 ℤcz 12554 ..^cfzo 13623 mod cmo 13830 ♯chash 14286 Word cword 14460 cyclShift ccsh 14734 toCycctocyc 32252

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-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183 ax-pre-sup 11184

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-int 4950 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7852 df-1st 7971 df-2nd 7972 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-1o 8462 df-er 8699 df-map 8818 df-en 8936 df-dom 8937 df-sdom 8938 df-fin 8939 df-sup 9433 df-inf 9434 df-card 9930 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-div 11868 df-nn 12209 df-2 12271 df-n0 12469 df-z 12555 df-uz 12819 df-rp 12971 df-fz 13481 df-fzo 13624 df-fl 13753 df-mod 13831 df-hash 14287 df-word 14461 df-concat 14517 df-substr 14587 df-pfx 14617 df-csh 14735 df-tocyc 32253

This theorem is referenced by: cyc2fv1 32267 cycpmco2lem4 32275 cycpmco2lem6 32277 cycpmco2lem7 32278 cycpmco2 32279 cyc3fv1 32283 cyc3fv2 32284 cycpmrn 32289

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