Theorem crctcshlem4 41023

Description: Lemma for crctcsh 41027. (Contributed by AV, 10-Mar-2021.)

Hypotheses

Ref	Expression
crctcsh.v	⊢ 𝑉 = (Vtx‘𝐺)
crctcsh.i	⊢ 𝐼 = (iEdg‘𝐺)
crctcsh.d	⊢ (𝜑 → 𝐹(CircuitS‘𝐺)𝑃)
crctcsh.n	⊢ 𝑁 = (#‘𝐹)
crctcsh.s	⊢ (𝜑 → 𝑆 ∈ (0..^𝑁))
crctcsh.h	⊢ 𝐻 = (𝐹 cyclShift 𝑆)
crctcsh.q	⊢ 𝑄 = (𝑥 ∈ (0...𝑁) ↦ if(𝑥 ≤ (𝑁 − 𝑆), (𝑃‘(𝑥 + 𝑆)), (𝑃‘((𝑥 + 𝑆) − 𝑁))))

Assertion

Ref	Expression
crctcshlem4	⊢ ((𝜑 ∧ 𝑆 = 0) → (𝐻 = 𝐹 ∧ 𝑄 = 𝑃))

Distinct variable groups:   𝑥,𝑁   𝑥,𝑃   𝑥,𝑆   𝜑,𝑥

Allowed substitution hints:   𝑄(𝑥)   𝐹(𝑥)   𝐺(𝑥)   𝐻(𝑥)   𝐼(𝑥)   𝑉(𝑥)

Proof of Theorem crctcshlem4

Step	Hyp	Ref	Expression
1		crctcsh.h	. . 3 ⊢ 𝐻 = (𝐹 cyclShift 𝑆)
2		oveq2 6557	. . . 4 ⊢ (𝑆 = 0 → (𝐹 cyclShift 𝑆) = (𝐹 cyclShift 0))
3		crctcsh.d	. . . . . 6 ⊢ (𝜑 → 𝐹(CircuitS‘𝐺)𝑃)
4		crctis1wlk 41002	. . . . . 6 ⊢ (𝐹(CircuitS‘𝐺)𝑃 → 𝐹(1Walks‘𝐺)𝑃)
5		crctcsh.i	. . . . . . 7 ⊢ 𝐼 = (iEdg‘𝐺)
6	5	1wlkf 40819	. . . . . 6 ⊢ (𝐹(1Walks‘𝐺)𝑃 → 𝐹 ∈ Word dom 𝐼)
7	3, 4, 6	3syl 18	. . . . 5 ⊢ (𝜑 → 𝐹 ∈ Word dom 𝐼)
8		cshw0 13391	. . . . 5 ⊢ (𝐹 ∈ Word dom 𝐼 → (𝐹 cyclShift 0) = 𝐹)
9	7, 8	syl 17	. . . 4 ⊢ (𝜑 → (𝐹 cyclShift 0) = 𝐹)
10	2, 9	sylan9eqr 2666	. . 3 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝐹 cyclShift 𝑆) = 𝐹)
11	1, 10	syl5eq 2656	. 2 ⊢ ((𝜑 ∧ 𝑆 = 0) → 𝐻 = 𝐹)
12		crctcsh.q	. . 3 ⊢ 𝑄 = (𝑥 ∈ (0...𝑁) ↦ if(𝑥 ≤ (𝑁 − 𝑆), (𝑃‘(𝑥 + 𝑆)), (𝑃‘((𝑥 + 𝑆) − 𝑁))))
13		oveq2 6557	. . . . . . . . 9 ⊢ (𝑆 = 0 → (𝑁 − 𝑆) = (𝑁 − 0))
14		crctcsh.v	. . . . . . . . . . . 12 ⊢ 𝑉 = (Vtx‘𝐺)
15		crctcsh.n	. . . . . . . . . . . 12 ⊢ 𝑁 = (#‘𝐹)
16	14, 5, 3, 15	crctcshlem1 41020	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑁 ∈ ℕ0)
17	16	nn0cnd 11230	. . . . . . . . . 10 ⊢ (𝜑 → 𝑁 ∈ ℂ)
18	17	subid1d 10260	. . . . . . . . 9 ⊢ (𝜑 → (𝑁 − 0) = 𝑁)
19	13, 18	sylan9eqr 2666	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝑁 − 𝑆) = 𝑁)
20	19	breq2d 4595	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝑥 ≤ (𝑁 − 𝑆) ↔ 𝑥 ≤ 𝑁))
21	20	adantr 480	. . . . . 6 ⊢ (((𝜑 ∧ 𝑆 = 0) ∧ 𝑥 ∈ (0...𝑁)) → (𝑥 ≤ (𝑁 − 𝑆) ↔ 𝑥 ≤ 𝑁))
22		oveq2 6557	. . . . . . . . 9 ⊢ (𝑆 = 0 → (𝑥 + 𝑆) = (𝑥 + 0))
23	22	adantl 481	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝑥 + 𝑆) = (𝑥 + 0))
24		elfzelz 12213	. . . . . . . . . 10 ⊢ (𝑥 ∈ (0...𝑁) → 𝑥 ∈ ℤ)
25	24	zcnd 11359	. . . . . . . . 9 ⊢ (𝑥 ∈ (0...𝑁) → 𝑥 ∈ ℂ)
26	25	addid1d 10115	. . . . . . . 8 ⊢ (𝑥 ∈ (0...𝑁) → (𝑥 + 0) = 𝑥)
27	23, 26	sylan9eq 2664	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑆 = 0) ∧ 𝑥 ∈ (0...𝑁)) → (𝑥 + 𝑆) = 𝑥)
28	27	fveq2d 6107	. . . . . 6 ⊢ (((𝜑 ∧ 𝑆 = 0) ∧ 𝑥 ∈ (0...𝑁)) → (𝑃‘(𝑥 + 𝑆)) = (𝑃‘𝑥))
29	27	oveq1d 6564	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑆 = 0) ∧ 𝑥 ∈ (0...𝑁)) → ((𝑥 + 𝑆) − 𝑁) = (𝑥 − 𝑁))
30	29	fveq2d 6107	. . . . . 6 ⊢ (((𝜑 ∧ 𝑆 = 0) ∧ 𝑥 ∈ (0...𝑁)) → (𝑃‘((𝑥 + 𝑆) − 𝑁)) = (𝑃‘(𝑥 − 𝑁)))
31	21, 28, 30	ifbieq12d 4063	. . . . 5 ⊢ (((𝜑 ∧ 𝑆 = 0) ∧ 𝑥 ∈ (0...𝑁)) → if(𝑥 ≤ (𝑁 − 𝑆), (𝑃‘(𝑥 + 𝑆)), (𝑃‘((𝑥 + 𝑆) − 𝑁))) = if(𝑥 ≤ 𝑁, (𝑃‘𝑥), (𝑃‘(𝑥 − 𝑁))))
32	31	mpteq2dva 4672	. . . 4 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝑥 ∈ (0...𝑁) ↦ if(𝑥 ≤ (𝑁 − 𝑆), (𝑃‘(𝑥 + 𝑆)), (𝑃‘((𝑥 + 𝑆) − 𝑁)))) = (𝑥 ∈ (0...𝑁) ↦ if(𝑥 ≤ 𝑁, (𝑃‘𝑥), (𝑃‘(𝑥 − 𝑁)))))
33		elfzle2 12216	. . . . . . . . 9 ⊢ (𝑥 ∈ (0...𝑁) → 𝑥 ≤ 𝑁)
34	33	adantl 481	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ (0...𝑁)) → 𝑥 ≤ 𝑁)
35	34	iftrued 4044	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (0...𝑁)) → if(𝑥 ≤ 𝑁, (𝑃‘𝑥), (𝑃‘(𝑥 − 𝑁))) = (𝑃‘𝑥))
36	35	mpteq2dva 4672	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ (0...𝑁) ↦ if(𝑥 ≤ 𝑁, (𝑃‘𝑥), (𝑃‘(𝑥 − 𝑁)))) = (𝑥 ∈ (0...𝑁) ↦ (𝑃‘𝑥)))
37	14	1wlkp 40821	. . . . . . . 8 ⊢ (𝐹(1Walks‘𝐺)𝑃 → 𝑃:(0...(#‘𝐹))⟶𝑉)
38	3, 4, 37	3syl 18	. . . . . . 7 ⊢ (𝜑 → 𝑃:(0...(#‘𝐹))⟶𝑉)
39		ffn 5958	. . . . . . . . . . 11 ⊢ (𝑃:(0...(#‘𝐹))⟶𝑉 → 𝑃 Fn (0...(#‘𝐹)))
40	15	eqcomi 2619	. . . . . . . . . . . . 13 ⊢ (#‘𝐹) = 𝑁
41	40	oveq2i 6560	. . . . . . . . . . . 12 ⊢ (0...(#‘𝐹)) = (0...𝑁)
42	41	fneq2i 5900	. . . . . . . . . . 11 ⊢ (𝑃 Fn (0...(#‘𝐹)) ↔ 𝑃 Fn (0...𝑁))
43	39, 42	sylib 207	. . . . . . . . . 10 ⊢ (𝑃:(0...(#‘𝐹))⟶𝑉 → 𝑃 Fn (0...𝑁))
44	43	adantl 481	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑃:(0...(#‘𝐹))⟶𝑉) → 𝑃 Fn (0...𝑁))
45		dffn5 6151	. . . . . . . . 9 ⊢ (𝑃 Fn (0...𝑁) ↔ 𝑃 = (𝑥 ∈ (0...𝑁) ↦ (𝑃‘𝑥)))
46	44, 45	sylib 207	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑃:(0...(#‘𝐹))⟶𝑉) → 𝑃 = (𝑥 ∈ (0...𝑁) ↦ (𝑃‘𝑥)))
47	46	eqcomd 2616	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑃:(0...(#‘𝐹))⟶𝑉) → (𝑥 ∈ (0...𝑁) ↦ (𝑃‘𝑥)) = 𝑃)
48	38, 47	mpdan 699	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ (0...𝑁) ↦ (𝑃‘𝑥)) = 𝑃)
49	36, 48	eqtrd 2644	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ (0...𝑁) ↦ if(𝑥 ≤ 𝑁, (𝑃‘𝑥), (𝑃‘(𝑥 − 𝑁)))) = 𝑃)
50	49	adantr 480	. . . 4 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝑥 ∈ (0...𝑁) ↦ if(𝑥 ≤ 𝑁, (𝑃‘𝑥), (𝑃‘(𝑥 − 𝑁)))) = 𝑃)
51	32, 50	eqtrd 2644	. . 3 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝑥 ∈ (0...𝑁) ↦ if(𝑥 ≤ (𝑁 − 𝑆), (𝑃‘(𝑥 + 𝑆)), (𝑃‘((𝑥 + 𝑆) − 𝑁)))) = 𝑃)
52	12, 51	syl5eq 2656	. 2 ⊢ ((𝜑 ∧ 𝑆 = 0) → 𝑄 = 𝑃)
53	11, 52	jca 553	1 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝐻 = 𝐹 ∧ 𝑄 = 𝑃))

Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383   = wceq 1475   ∈ wcel 1977  ifcif 4036   class class class wbr 4583   ↦ cmpt 4643  dom cdm 5038   Fn wfn 5799  ⟶wf 5800  ‘cfv 5804  (class class class)co 6549  0cc0 9815   + caddc 9818   ≤ cle 9954   − cmin 10145  ...cfz 12197  ..^cfzo 12334  #chash 12979  Word cword 13146   cyclShift ccsh 13385  Vtxcvtx 25673  iEdgciedg 25674  1Walksc1wlks 40796  CircuitSccrcts 40990

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  ax-pre-sup 9893

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-ifp 1007  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-rmo 2904  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-int 4411  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-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-oadd 7451  df-er 7629  df-map 7746  df-pm 7747  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-sup 8231  df-inf 8232  df-card 8648  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-nn 10898  df-n0 11170  df-z 11255  df-uz 11564  df-rp 11709  df-fz 12198  df-fzo 12335  df-fl 12455  df-mod 12531  df-hash 12980  df-word 13154  df-concat 13156  df-substr 13158  df-csh 13386  df-1wlks 40800  df-trls 40901  df-crcts 40992

This theorem is referenced by:  crctcsh1wlk  41025  crctcsh  41027