cycpmfv2 - Mathbox for Thierry Arnoux

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Theorem cycpmfv2 32314

Description: Value of a cycle function for the last element of the orbit. (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)
cycpmfv2.1	⊢ (𝜑 → 0 < (♯‘𝑊))
cycpmfv2.2	⊢ (𝜑 → 𝑁 = ((♯‘𝑊) − 1))

**Assertion**
Ref	Expression
cycpmfv2	⊢ (𝜑 → ((𝐶‘𝑊)‘(𝑊‘𝑁)) = (𝑊‘0))

**Proof of Theorem cycpmfv2**
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		cycpmfv2.2	. . . 4 ⊢ (𝜑 → 𝑁 = ((♯‘𝑊) − 1))
6		lencl 14485	. . . . . . . 8 ⊢ (𝑊 ∈ Word 𝐷 → (♯‘𝑊) ∈ ℕ₀)
7	3, 6	syl 17	. . . . . . 7 ⊢ (𝜑 → (♯‘𝑊) ∈ ℕ₀)
8		cycpmfv2.1	. . . . . . 7 ⊢ (𝜑 → 0 < (♯‘𝑊))
9		elnnnn0b 12518	. . . . . . 7 ⊢ ((♯‘𝑊) ∈ ℕ ↔ ((♯‘𝑊) ∈ ℕ₀ ∧ 0 < (♯‘𝑊)))
10	7, 8, 9	sylanbrc 583	. . . . . 6 ⊢ (𝜑 → (♯‘𝑊) ∈ ℕ)
11		elfz1end 13533	. . . . . 6 ⊢ ((♯‘𝑊) ∈ ℕ ↔ (♯‘𝑊) ∈ (1...(♯‘𝑊)))
12	10, 11	sylib 217	. . . . 5 ⊢ (𝜑 → (♯‘𝑊) ∈ (1...(♯‘𝑊)))
13		fz1fzo0m1 13682	. . . . 5 ⊢ ((♯‘𝑊) ∈ (1...(♯‘𝑊)) → ((♯‘𝑊) − 1) ∈ (0..^(♯‘𝑊)))
14	12, 13	syl 17	. . . 4 ⊢ (𝜑 → ((♯‘𝑊) − 1) ∈ (0..^(♯‘𝑊)))
15	5, 14	eqeltrd 2833	. . 3 ⊢ (𝜑 → 𝑁 ∈ (0..^(♯‘𝑊)))
16	1, 2, 3, 4, 15	cycpmfvlem 32312	. 2 ⊢ (𝜑 → ((𝐶‘𝑊)‘(𝑊‘𝑁)) = (((𝑊 cyclShift 1) ∘ ^◡𝑊)‘(𝑊‘𝑁)))
17		df-f1 6548	. . . . 5 ⊢ (𝑊:dom 𝑊–1-1→𝐷 ↔ (𝑊:dom 𝑊⟶𝐷 ∧ Fun ^◡𝑊))
18	4, 17	sylib 217	. . . 4 ⊢ (𝜑 → (𝑊:dom 𝑊⟶𝐷 ∧ Fun ^◡𝑊))
19	18	simprd 496	. . 3 ⊢ (𝜑 → Fun ^◡𝑊)
20		wrdfn 14480	. . . . . 6 ⊢ (𝑊 ∈ Word 𝐷 → 𝑊 Fn (0..^(♯‘𝑊)))
21	3, 20	syl 17	. . . . 5 ⊢ (𝜑 → 𝑊 Fn (0..^(♯‘𝑊)))
22		fnfvelrn 7082	. . . . 5 ⊢ ((𝑊 Fn (0..^(♯‘𝑊)) ∧ 𝑁 ∈ (0..^(♯‘𝑊))) → (𝑊‘𝑁) ∈ ran 𝑊)
23	21, 15, 22	syl2anc 584	. . . 4 ⊢ (𝜑 → (𝑊‘𝑁) ∈ ran 𝑊)
24		df-rn 5687	. . . 4 ⊢ ran 𝑊 = dom ^◡𝑊
25	23, 24	eleqtrdi 2843	. . 3 ⊢ (𝜑 → (𝑊‘𝑁) ∈ dom ^◡𝑊)
26		fvco 6989	. . 3 ⊢ ((Fun ^◡𝑊 ∧ (𝑊‘𝑁) ∈ dom ^◡𝑊) → (((𝑊 cyclShift 1) ∘ ^◡𝑊)‘(𝑊‘𝑁)) = ((𝑊 cyclShift 1)‘(^◡𝑊‘(𝑊‘𝑁))))
27	19, 25, 26	syl2anc 584	. 2 ⊢ (𝜑 → (((𝑊 cyclShift 1) ∘ ^◡𝑊)‘(𝑊‘𝑁)) = ((𝑊 cyclShift 1)‘(^◡𝑊‘(𝑊‘𝑁))))
28		f1f1orn 6844	. . . . . 6 ⊢ (𝑊:dom 𝑊–1-1→𝐷 → 𝑊:dom 𝑊–1-1-onto→ran 𝑊)
29	4, 28	syl 17	. . . . 5 ⊢ (𝜑 → 𝑊:dom 𝑊–1-1-onto→ran 𝑊)
30	21	fndmd 6654	. . . . . 6 ⊢ (𝜑 → dom 𝑊 = (0..^(♯‘𝑊)))
31	15, 30	eleqtrrd 2836	. . . . 5 ⊢ (𝜑 → 𝑁 ∈ dom 𝑊)
32		f1ocnvfv1 7276	. . . . 5 ⊢ ((𝑊:dom 𝑊–1-1-onto→ran 𝑊 ∧ 𝑁 ∈ dom 𝑊) → (^◡𝑊‘(𝑊‘𝑁)) = 𝑁)
33	29, 31, 32	syl2anc 584	. . . 4 ⊢ (𝜑 → (^◡𝑊‘(𝑊‘𝑁)) = 𝑁)
34	33	fveq2d 6895	. . 3 ⊢ (𝜑 → ((𝑊 cyclShift 1)‘(^◡𝑊‘(𝑊‘𝑁))) = ((𝑊 cyclShift 1)‘𝑁))
35		1zzd 12595	. . . 4 ⊢ (𝜑 → 1 ∈ ℤ)
36		cshwidxmod 14755	. . . 4 ⊢ ((𝑊 ∈ Word 𝐷 ∧ 1 ∈ ℤ ∧ 𝑁 ∈ (0..^(♯‘𝑊))) → ((𝑊 cyclShift 1)‘𝑁) = (𝑊‘((𝑁 + 1) mod (♯‘𝑊))))
37	3, 35, 15, 36	syl3anc 1371	. . 3 ⊢ (𝜑 → ((𝑊 cyclShift 1)‘𝑁) = (𝑊‘((𝑁 + 1) mod (♯‘𝑊))))
38		fzossfz 13653	. . . . . . . 8 ⊢ (0..^(♯‘𝑊)) ⊆ (0...(♯‘𝑊))
39		fzssz 13505	. . . . . . . 8 ⊢ (0...(♯‘𝑊)) ⊆ ℤ
40	38, 39	sstri 3991	. . . . . . 7 ⊢ (0..^(♯‘𝑊)) ⊆ ℤ
41	40, 15	sselid 3980	. . . . . 6 ⊢ (𝜑 → 𝑁 ∈ ℤ)
42	41	zred 12668	. . . . 5 ⊢ (𝜑 → 𝑁 ∈ ℝ)
43	10	nnrpd 13016	. . . . 5 ⊢ (𝜑 → (♯‘𝑊) ∈ ℝ⁺)
44	5	oveq1d 7426	. . . . . 6 ⊢ (𝜑 → (𝑁 mod (♯‘𝑊)) = (((♯‘𝑊) − 1) mod (♯‘𝑊)))
45		zmodidfzoimp 13868	. . . . . . 7 ⊢ (((♯‘𝑊) − 1) ∈ (0..^(♯‘𝑊)) → (((♯‘𝑊) − 1) mod (♯‘𝑊)) = ((♯‘𝑊) − 1))
46	14, 45	syl 17	. . . . . 6 ⊢ (𝜑 → (((♯‘𝑊) − 1) mod (♯‘𝑊)) = ((♯‘𝑊) − 1))
47	44, 46	eqtrd 2772	. . . . 5 ⊢ (𝜑 → (𝑁 mod (♯‘𝑊)) = ((♯‘𝑊) − 1))
48		modm1p1mod0 13889	. . . . . 6 ⊢ ((𝑁 ∈ ℝ ∧ (♯‘𝑊) ∈ ℝ⁺) → ((𝑁 mod (♯‘𝑊)) = ((♯‘𝑊) − 1) → ((𝑁 + 1) mod (♯‘𝑊)) = 0))
49	48	imp 407	. . . . 5 ⊢ (((𝑁 ∈ ℝ ∧ (♯‘𝑊) ∈ ℝ⁺) ∧ (𝑁 mod (♯‘𝑊)) = ((♯‘𝑊) − 1)) → ((𝑁 + 1) mod (♯‘𝑊)) = 0)
50	42, 43, 47, 49	syl21anc 836	. . . 4 ⊢ (𝜑 → ((𝑁 + 1) mod (♯‘𝑊)) = 0)
51	50	fveq2d 6895	. . 3 ⊢ (𝜑 → (𝑊‘((𝑁 + 1) mod (♯‘𝑊))) = (𝑊‘0))
52	34, 37, 51	3eqtrd 2776	. 2 ⊢ (𝜑 → ((𝑊 cyclShift 1)‘(^◡𝑊‘(𝑊‘𝑁))) = (𝑊‘0))
53	16, 27, 52	3eqtrd 2776	1 ⊢ (𝜑 → ((𝐶‘𝑊)‘(𝑊‘𝑁)) = (𝑊‘0))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 = wceq 1541 ∈ wcel 2106 class class class wbr 5148 ^◡ccnv 5675 dom cdm 5676 ran crn 5677 ∘ ccom 5680 Fun wfun 6537 Fn wfn 6538 ⟶wf 6539 –1-1→wf1 6540 –1-1-onto→wf1o 6542 ‘cfv 6543 (class class class)co 7411 ℝcr 11111 0cc0 11112 1c1 11113 + caddc 11115 < clt 11250 − cmin 11446 ℕcn 12214 ℕ₀cn0 12474 ℤcz 12560 ℝ⁺crp 12976 ...cfz 13486 ..^cfzo 13629 mod cmo 13836 ♯chash 14292 Word cword 14466 cyclShift ccsh 14740 toCycctocyc 32306

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 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189 ax-pre-sup 11190

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 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 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-1st 7977 df-2nd 7978 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-1o 8468 df-er 8705 df-map 8824 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-sup 9439 df-inf 9440 df-card 9936 df-pnf 11252 df-mnf 11253 df-xr 11254 df-ltxr 11255 df-le 11256 df-sub 11448 df-neg 11449 df-div 11874 df-nn 12215 df-2 12277 df-n0 12475 df-z 12561 df-uz 12825 df-rp 12977 df-fz 13487 df-fzo 13630 df-fl 13759 df-mod 13837 df-hash 14293 df-word 14467 df-concat 14523 df-substr 14593 df-pfx 14623 df-csh 14741 df-tocyc 32307

This theorem is referenced by: cyc2fv2 32322 cycpmco2lem4 32329 cycpmco2lem5 32330 cyc3fv3 32339 cycpmrn 32343

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