Theorem eclclwwlkn1 27856

Description: An equivalence class according to ∼. (Contributed by Alexander van der Vekens, 12-Apr-2018.) (Revised by AV, 30-Apr-2021.)

Hypotheses

Ref	Expression
erclwwlkn.w	⊢ 𝑊 = (𝑁 ClWWalksN 𝐺)
erclwwlkn.r	⊢ ∼ = {⟨𝑡, 𝑢⟩ ∣ (𝑡 ∈ 𝑊 ∧ 𝑢 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))}

Assertion

Ref	Expression
eclclwwlkn1	⊢ (𝐵 ∈ 𝑋 → (𝐵 ∈ (𝑊 / ∼ ) ↔ ∃𝑥 ∈ 𝑊 𝐵 = {𝑦 ∈ 𝑊 ∣ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)}))

Distinct variable groups:   𝑡,𝑊,𝑢   𝑛,𝑁,𝑢,𝑡,𝑥,𝑦   𝑛,𝑊   𝑥, ∼ ,𝑦   𝑥,𝑊   𝑥,𝐺   𝑥,𝑋   𝑥,𝐵,𝑦   𝑦,𝑁   𝑦,𝑊   𝑦,𝑋

Allowed substitution hints:   𝐵(𝑢,𝑡,𝑛)   ∼ (𝑢,𝑡,𝑛)   𝐺(𝑦,𝑢,𝑡,𝑛)   𝑋(𝑢,𝑡,𝑛)

Proof of Theorem eclclwwlkn1

Step	Hyp	Ref	Expression
1		elqsecl 8353	. 2 ⊢ (𝐵 ∈ 𝑋 → (𝐵 ∈ (𝑊 / ∼ ) ↔ ∃𝑥 ∈ 𝑊 𝐵 = {𝑦 ∣ 𝑥 ∼ 𝑦}))
2		erclwwlkn.w	. . . . . . . . 9 ⊢ 𝑊 = (𝑁 ClWWalksN 𝐺)
3		erclwwlkn.r	. . . . . . . . 9 ⊢ ∼ = {⟨𝑡, 𝑢⟩ ∣ (𝑡 ∈ 𝑊 ∧ 𝑢 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑡 = (𝑢 cyclShift 𝑛))}
4	2, 3	erclwwlknsym 27851	. . . . . . . 8 ⊢ (𝑥 ∼ 𝑦 → 𝑦 ∼ 𝑥)
5	2, 3	erclwwlknsym 27851	. . . . . . . 8 ⊢ (𝑦 ∼ 𝑥 → 𝑥 ∼ 𝑦)
6	4, 5	impbii 211	. . . . . . 7 ⊢ (𝑥 ∼ 𝑦 ↔ 𝑦 ∼ 𝑥)
7	6	a1i 11	. . . . . 6 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → (𝑥 ∼ 𝑦 ↔ 𝑦 ∼ 𝑥))
8	7	abbidv 2887	. . . . 5 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → {𝑦 ∣ 𝑥 ∼ 𝑦} = {𝑦 ∣ 𝑦 ∼ 𝑥})
9	2, 3	erclwwlkneq 27848	. . . . . . . 8 ⊢ ((𝑦 ∈ V ∧ 𝑥 ∈ V) → (𝑦 ∼ 𝑥 ↔ (𝑦 ∈ 𝑊 ∧ 𝑥 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))))
10	9	el2v 3503	. . . . . . 7 ⊢ (𝑦 ∼ 𝑥 ↔ (𝑦 ∈ 𝑊 ∧ 𝑥 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)))
11	10	a1i 11	. . . . . 6 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → (𝑦 ∼ 𝑥 ↔ (𝑦 ∈ 𝑊 ∧ 𝑥 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))))
12	11	abbidv 2887	. . . . 5 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → {𝑦 ∣ 𝑦 ∼ 𝑥} = {𝑦 ∣ (𝑦 ∈ 𝑊 ∧ 𝑥 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))})
13		3anan12 1092	. . . . . . . 8 ⊢ ((𝑦 ∈ 𝑊 ∧ 𝑥 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)) ↔ (𝑥 ∈ 𝑊 ∧ (𝑦 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))))
14		ibar 531	. . . . . . . . . 10 ⊢ (𝑥 ∈ 𝑊 → ((𝑦 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)) ↔ (𝑥 ∈ 𝑊 ∧ (𝑦 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)))))
15	14	bicomd 225	. . . . . . . . 9 ⊢ (𝑥 ∈ 𝑊 → ((𝑥 ∈ 𝑊 ∧ (𝑦 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))) ↔ (𝑦 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))))
16	15	adantl 484	. . . . . . . 8 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → ((𝑥 ∈ 𝑊 ∧ (𝑦 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))) ↔ (𝑦 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))))
17	13, 16	syl5bb 285	. . . . . . 7 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → ((𝑦 ∈ 𝑊 ∧ 𝑥 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)) ↔ (𝑦 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))))
18	17	abbidv 2887	. . . . . 6 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → {𝑦 ∣ (𝑦 ∈ 𝑊 ∧ 𝑥 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))} = {𝑦 ∣ (𝑦 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))})
19		df-rab 3149	. . . . . 6 ⊢ {𝑦 ∈ 𝑊 ∣ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)} = {𝑦 ∣ (𝑦 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))}
20	18, 19	syl6eqr 2876	. . . . 5 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → {𝑦 ∣ (𝑦 ∈ 𝑊 ∧ 𝑥 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))} = {𝑦 ∈ 𝑊 ∣ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)})
21	8, 12, 20	3eqtrd 2862	. . . 4 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → {𝑦 ∣ 𝑥 ∼ 𝑦} = {𝑦 ∈ 𝑊 ∣ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)})
22	21	eqeq2d 2834	. . 3 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → (𝐵 = {𝑦 ∣ 𝑥 ∼ 𝑦} ↔ 𝐵 = {𝑦 ∈ 𝑊 ∣ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)}))
23	22	rexbidva 3298	. 2 ⊢ (𝐵 ∈ 𝑋 → (∃𝑥 ∈ 𝑊 𝐵 = {𝑦 ∣ 𝑥 ∼ 𝑦} ↔ ∃𝑥 ∈ 𝑊 𝐵 = {𝑦 ∈ 𝑊 ∣ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)}))
24	1, 23	bitrd 281	1 ⊢ (𝐵 ∈ 𝑋 → (𝐵 ∈ (𝑊 / ∼ ) ↔ ∃𝑥 ∈ 𝑊 𝐵 = {𝑦 ∈ 𝑊 ∣ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)}))

Syntax hints:   → wi 4   ↔ wb 208   ∧ wa 398   ∧ w3a 1083   = wceq 1537   ∈ wcel 2114  {cab 2801  ∃wrex 3141  {crab 3144  Vcvv 3496   class class class wbr 5068  {copab 5130  (class class class)co 7158   / cqs 8290  0cc0 10539  ...cfz 12895   cyclShift ccsh 14152   ClWWalksN cclwwlkn 27804

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2161  ax-12 2177  ax-ext 2795  ax-rep 5192  ax-sep 5205  ax-nul 5212  ax-pow 5268  ax-pr 5332  ax-un 7463  ax-cnex 10595  ax-resscn 10596  ax-1cn 10597  ax-icn 10598  ax-addcl 10599  ax-addrcl 10600  ax-mulcl 10601  ax-mulrcl 10602  ax-mulcom 10603  ax-addass 10604  ax-mulass 10605  ax-distr 10606  ax-i2m1 10607  ax-1ne0 10608  ax-1rid 10609  ax-rnegex 10610  ax-rrecex 10611  ax-cnre 10612  ax-pre-lttri 10613  ax-pre-lttrn 10614  ax-pre-ltadd 10615  ax-pre-mulgt0 10616  ax-pre-sup 10617

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1540  df-ex 1781  df-nf 1785  df-sb 2070  df-mo 2622  df-eu 2654  df-clab 2802  df-cleq 2816  df-clel 2895  df-nfc 2965  df-ne 3019  df-nel 3126  df-ral 3145  df-rex 3146  df-reu 3147  df-rmo 3148  df-rab 3149  df-v 3498  df-sbc 3775  df-csb 3886  df-dif 3941  df-un 3943  df-in 3945  df-ss 3954  df-pss 3956  df-nul 4294  df-if 4470  df-pw 4543  df-sn 4570  df-pr 4572  df-tp 4574  df-op 4576  df-uni 4841  df-int 4879  df-iun 4923  df-br 5069  df-opab 5131  df-mpt 5149  df-tr 5175  df-id 5462  df-eprel 5467  df-po 5476  df-so 5477  df-fr 5516  df-we 5518  df-xp 5563  df-rel 5564  df-cnv 5565  df-co 5566  df-dm 5567  df-rn 5568  df-res 5569  df-ima 5570  df-pred 6150  df-ord 6196  df-on 6197  df-lim 6198  df-suc 6199  df-iota 6316  df-fun 6359  df-fn 6360  df-f 6361  df-f1 6362  df-fo 6363  df-f1o 6364  df-fv 6365  df-riota 7116  df-ov 7161  df-oprab 7162  df-mpo 7163  df-om 7583  df-1st 7691  df-2nd 7692  df-wrecs 7949  df-recs 8010  df-rdg 8048  df-1o 8104  df-oadd 8108  df-er 8291  df-ec 8293  df-qs 8297  df-map 8410  df-en 8512  df-dom 8513  df-sdom 8514  df-fin 8515  df-sup 8908  df-inf 8909  df-card 9370  df-pnf 10679  df-mnf 10680  df-xr 10681  df-ltxr 10682  df-le 10683  df-sub 10874  df-neg 10875  df-div 11300  df-nn 11641  df-2 11703  df-n0 11901  df-z 11985  df-uz 12247  df-rp 12393  df-fz 12896  df-fzo 13037  df-fl 13165  df-mod 13241  df-hash 13694  df-word 13865  df-concat 13925  df-substr 14005  df-pfx 14035  df-csh 14153  df-clwwlk 27762  df-clwwlkn 27805

This theorem is referenced by:  eleclclwwlkn  27857  hashecclwwlkn1  27858  umgrhashecclwwlk  27859