Theorem crctcshlem4 26712

Description: Lemma for crctcsh 26716. (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 6658	. . . 4 ⊢ (𝑆 = 0 → (𝐹 cyclShift 𝑆) = (𝐹 cyclShift 0))
3		crctcsh.d	. . . . . 6 ⊢ (𝜑 → 𝐹(Circuits‘𝐺)𝑃)
4		crctiswlk 26691	. . . . . 6 ⊢ (𝐹(Circuits‘𝐺)𝑃 → 𝐹(Walks‘𝐺)𝑃)
5		crctcsh.i	. . . . . . 7 ⊢ 𝐼 = (iEdg‘𝐺)
6	5	wlkf 26510	. . . . . 6 ⊢ (𝐹(Walks‘𝐺)𝑃 → 𝐹 ∈ Word dom 𝐼)
7	3, 4, 6	3syl 18	. . . . 5 ⊢ (𝜑 → 𝐹 ∈ Word dom 𝐼)
8		cshw0 13540	. . . . 5 ⊢ (𝐹 ∈ Word dom 𝐼 → (𝐹 cyclShift 0) = 𝐹)
9	7, 8	syl 17	. . . 4 ⊢ (𝜑 → (𝐹 cyclShift 0) = 𝐹)
10	2, 9	sylan9eqr 2678	. . 3 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝐹 cyclShift 𝑆) = 𝐹)
11	1, 10	syl5eq 2668	. 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 6658	. . . . . . . . 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 26709	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑁 ∈ ℕ0)
17	16	nn0cnd 11353	. . . . . . . . . 10 ⊢ (𝜑 → 𝑁 ∈ ℂ)
18	17	subid1d 10381	. . . . . . . . 9 ⊢ (𝜑 → (𝑁 − 0) = 𝑁)
19	13, 18	sylan9eqr 2678	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝑁 − 𝑆) = 𝑁)
20	19	breq2d 4665	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝑥 ≤ (𝑁 − 𝑆) ↔ 𝑥 ≤ 𝑁))
21	20	adantr 481	. . . . . 6 ⊢ (((𝜑 ∧ 𝑆 = 0) ∧ 𝑥 ∈ (0...𝑁)) → (𝑥 ≤ (𝑁 − 𝑆) ↔ 𝑥 ≤ 𝑁))
22		oveq2 6658	. . . . . . . . 9 ⊢ (𝑆 = 0 → (𝑥 + 𝑆) = (𝑥 + 0))
23	22	adantl 482	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝑥 + 𝑆) = (𝑥 + 0))
24		elfzelz 12342	. . . . . . . . . 10 ⊢ (𝑥 ∈ (0...𝑁) → 𝑥 ∈ ℤ)
25	24	zcnd 11483	. . . . . . . . 9 ⊢ (𝑥 ∈ (0...𝑁) → 𝑥 ∈ ℂ)
26	25	addid1d 10236	. . . . . . . 8 ⊢ (𝑥 ∈ (0...𝑁) → (𝑥 + 0) = 𝑥)
27	23, 26	sylan9eq 2676	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑆 = 0) ∧ 𝑥 ∈ (0...𝑁)) → (𝑥 + 𝑆) = 𝑥)
28	27	fveq2d 6195	. . . . . 6 ⊢ (((𝜑 ∧ 𝑆 = 0) ∧ 𝑥 ∈ (0...𝑁)) → (𝑃‘(𝑥 + 𝑆)) = (𝑃‘𝑥))
29	27	oveq1d 6665	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑆 = 0) ∧ 𝑥 ∈ (0...𝑁)) → ((𝑥 + 𝑆) − 𝑁) = (𝑥 − 𝑁))
30	29	fveq2d 6195	. . . . . 6 ⊢ (((𝜑 ∧ 𝑆 = 0) ∧ 𝑥 ∈ (0...𝑁)) → (𝑃‘((𝑥 + 𝑆) − 𝑁)) = (𝑃‘(𝑥 − 𝑁)))
31	21, 28, 30	ifbieq12d 4113	. . . . 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 4744	. . . 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 12345	. . . . . . . . 9 ⊢ (𝑥 ∈ (0...𝑁) → 𝑥 ≤ 𝑁)
34	33	adantl 482	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ (0...𝑁)) → 𝑥 ≤ 𝑁)
35	34	iftrued 4094	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (0...𝑁)) → if(𝑥 ≤ 𝑁, (𝑃‘𝑥), (𝑃‘(𝑥 − 𝑁))) = (𝑃‘𝑥))
36	35	mpteq2dva 4744	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ (0...𝑁) ↦ if(𝑥 ≤ 𝑁, (𝑃‘𝑥), (𝑃‘(𝑥 − 𝑁)))) = (𝑥 ∈ (0...𝑁) ↦ (𝑃‘𝑥)))
37	14	wlkp 26512	. . . . . . . 8 ⊢ (𝐹(Walks‘𝐺)𝑃 → 𝑃:(0...(#‘𝐹))⟶𝑉)
38	3, 4, 37	3syl 18	. . . . . . 7 ⊢ (𝜑 → 𝑃:(0...(#‘𝐹))⟶𝑉)
39		ffn 6045	. . . . . . . . . . 11 ⊢ (𝑃:(0...(#‘𝐹))⟶𝑉 → 𝑃 Fn (0...(#‘𝐹)))
40	15	eqcomi 2631	. . . . . . . . . . . . 13 ⊢ (#‘𝐹) = 𝑁
41	40	oveq2i 6661	. . . . . . . . . . . 12 ⊢ (0...(#‘𝐹)) = (0...𝑁)
42	41	fneq2i 5986	. . . . . . . . . . 11 ⊢ (𝑃 Fn (0...(#‘𝐹)) ↔ 𝑃 Fn (0...𝑁))
43	39, 42	sylib 208	. . . . . . . . . 10 ⊢ (𝑃:(0...(#‘𝐹))⟶𝑉 → 𝑃 Fn (0...𝑁))
44	43	adantl 482	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑃:(0...(#‘𝐹))⟶𝑉) → 𝑃 Fn (0...𝑁))
45		dffn5 6241	. . . . . . . . 9 ⊢ (𝑃 Fn (0...𝑁) ↔ 𝑃 = (𝑥 ∈ (0...𝑁) ↦ (𝑃‘𝑥)))
46	44, 45	sylib 208	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑃:(0...(#‘𝐹))⟶𝑉) → 𝑃 = (𝑥 ∈ (0...𝑁) ↦ (𝑃‘𝑥)))
47	46	eqcomd 2628	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑃:(0...(#‘𝐹))⟶𝑉) → (𝑥 ∈ (0...𝑁) ↦ (𝑃‘𝑥)) = 𝑃)
48	38, 47	mpdan 702	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ (0...𝑁) ↦ (𝑃‘𝑥)) = 𝑃)
49	36, 48	eqtrd 2656	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ (0...𝑁) ↦ if(𝑥 ≤ 𝑁, (𝑃‘𝑥), (𝑃‘(𝑥 − 𝑁)))) = 𝑃)
50	49	adantr 481	. . . 4 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝑥 ∈ (0...𝑁) ↦ if(𝑥 ≤ 𝑁, (𝑃‘𝑥), (𝑃‘(𝑥 − 𝑁)))) = 𝑃)
51	32, 50	eqtrd 2656	. . 3 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝑥 ∈ (0...𝑁) ↦ if(𝑥 ≤ (𝑁 − 𝑆), (𝑃‘(𝑥 + 𝑆)), (𝑃‘((𝑥 + 𝑆) − 𝑁)))) = 𝑃)
52	12, 51	syl5eq 2668	. 2 ⊢ ((𝜑 ∧ 𝑆 = 0) → 𝑄 = 𝑃)
53	11, 52	jca 554	1 ⊢ ((𝜑 ∧ 𝑆 = 0) → (𝐻 = 𝐹 ∧ 𝑄 = 𝑃))

Syntax hints:   → wi 4   ↔ wb 196   ∧ wa 384   = wceq 1483   ∈ wcel 1990  ifcif 4086   class class class wbr 4653   ↦ cmpt 4729  dom cdm 5114   Fn wfn 5883  ⟶wf 5884  ‘cfv 5888  (class class class)co 6650  0cc0 9936   + caddc 9939   ≤ cle 10075   − cmin 10266  ...cfz 12326  ..^cfzo 12465  #chash 13117  Word cword 13291   cyclShift ccsh 13534  Vtxcvtx 25874  iEdgciedg 25875  Walkscwlks 26492  Circuitsccrcts 26679

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013  ax-pre-sup 10014

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-ifp 1013  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-om 7066  df-1st 7168  df-2nd 7169  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-1o 7560  df-oadd 7564  df-er 7742  df-map 7859  df-pm 7860  df-en 7956  df-dom 7957  df-sdom 7958  df-fin 7959  df-sup 8348  df-inf 8349  df-card 8765  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-div 10685  df-nn 11021  df-n0 11293  df-z 11378  df-uz 11688  df-rp 11833  df-fz 12327  df-fzo 12466  df-fl 12593  df-mod 12669  df-hash 13118  df-word 13299  df-concat 13301  df-substr 13303  df-csh 13535  df-wlks 26495  df-trls 26589  df-crcts 26681

This theorem is referenced by:  crctcshwlk  26714  crctcsh  26716