Theorem eclclwwlkn1 28418

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 8534	. 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 28413	. . . . . . . 8 ⊢ (𝑥 ∼ 𝑦 → 𝑦 ∼ 𝑥)
5	2, 3	erclwwlknsym 28413	. . . . . . . 8 ⊢ (𝑦 ∼ 𝑥 → 𝑥 ∼ 𝑦)
6	4, 5	impbii 208	. . . . . . 7 ⊢ (𝑥 ∼ 𝑦 ↔ 𝑦 ∼ 𝑥)
7	6	a1i 11	. . . . . 6 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → (𝑥 ∼ 𝑦 ↔ 𝑦 ∼ 𝑥))
8	7	abbidv 2808	. . . . 5 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → {𝑦 ∣ 𝑥 ∼ 𝑦} = {𝑦 ∣ 𝑦 ∼ 𝑥})
9	2, 3	erclwwlkneq 28410	. . . . . . . 8 ⊢ ((𝑦 ∈ V ∧ 𝑥 ∈ V) → (𝑦 ∼ 𝑥 ↔ (𝑦 ∈ 𝑊 ∧ 𝑥 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))))
10	9	el2v 3438	. . . . . . 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 2808	. . . . 5 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → {𝑦 ∣ 𝑦 ∼ 𝑥} = {𝑦 ∣ (𝑦 ∈ 𝑊 ∧ 𝑥 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))})
13		3anan12 1094	. . . . . . . 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 528	. . . . . . . . . 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 222	. . . . . . . . 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 481	. . . . . . . 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 282	. . . . . . 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 2808	. . . . . 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 3074	. . . . . 6 ⊢ {𝑦 ∈ 𝑊 ∣ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)} = {𝑦 ∣ (𝑦 ∈ 𝑊 ∧ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛))}
20	18, 19	eqtr4di 2797	. . . . 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 2783	. . . 4 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → {𝑦 ∣ 𝑥 ∼ 𝑦} = {𝑦 ∈ 𝑊 ∣ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)})
22	21	eqeq2d 2750	. . 3 ⊢ ((𝐵 ∈ 𝑋 ∧ 𝑥 ∈ 𝑊) → (𝐵 = {𝑦 ∣ 𝑥 ∼ 𝑦} ↔ 𝐵 = {𝑦 ∈ 𝑊 ∣ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)}))
23	22	rexbidva 3226	. 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 278	1 ⊢ (𝐵 ∈ 𝑋 → (𝐵 ∈ (𝑊 / ∼ ) ↔ ∃𝑥 ∈ 𝑊 𝐵 = {𝑦 ∈ 𝑊 ∣ ∃𝑛 ∈ (0...𝑁)𝑦 = (𝑥 cyclShift 𝑛)}))

Syntax hints:   → wi 4   ↔ wb 205   ∧ wa 395   ∧ w3a 1085   = wceq 1541   ∈ wcel 2109  {cab 2716  ∃wrex 3066  {crab 3069  Vcvv 3430   class class class wbr 5078  {copab 5140  (class class class)co 7268   / cqs 8471  0cc0 10855  ...cfz 13221   cyclShift ccsh 14482   ClWWalksN cclwwlkn 28367

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1801  ax-4 1815  ax-5 1916  ax-6 1974  ax-7 2014  ax-8 2111  ax-9 2119  ax-10 2140  ax-11 2157  ax-12 2174  ax-ext 2710  ax-rep 5213  ax-sep 5226  ax-nul 5233  ax-pow 5291  ax-pr 5355  ax-un 7579  ax-cnex 10911  ax-resscn 10912  ax-1cn 10913  ax-icn 10914  ax-addcl 10915  ax-addrcl 10916  ax-mulcl 10917  ax-mulrcl 10918  ax-mulcom 10919  ax-addass 10920  ax-mulass 10921  ax-distr 10922  ax-i2m1 10923  ax-1ne0 10924  ax-1rid 10925  ax-rnegex 10926  ax-rrecex 10927  ax-cnre 10928  ax-pre-lttri 10929  ax-pre-lttrn 10930  ax-pre-ltadd 10931  ax-pre-mulgt0 10932  ax-pre-sup 10933

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1544  df-fal 1554  df-ex 1786  df-nf 1790  df-sb 2071  df-mo 2541  df-eu 2570  df-clab 2717  df-cleq 2731  df-clel 2817  df-nfc 2890  df-ne 2945  df-nel 3051  df-ral 3070  df-rex 3071  df-reu 3072  df-rmo 3073  df-rab 3074  df-v 3432  df-sbc 3720  df-csb 3837  df-dif 3894  df-un 3896  df-in 3898  df-ss 3908  df-pss 3910  df-nul 4262  df-if 4465  df-pw 4540  df-sn 4567  df-pr 4569  df-tp 4571  df-op 4573  df-uni 4845  df-int 4885  df-iun 4931  df-br 5079  df-opab 5141  df-mpt 5162  df-tr 5196  df-id 5488  df-eprel 5494  df-po 5502  df-so 5503  df-fr 5543  df-we 5545  df-xp 5594  df-rel 5595  df-cnv 5596  df-co 5597  df-dm 5598  df-rn 5599  df-res 5600  df-ima 5601  df-pred 6199  df-ord 6266  df-on 6267  df-lim 6268  df-suc 6269  df-iota 6388  df-fun 6432  df-fn 6433  df-f 6434  df-f1 6435  df-fo 6436  df-f1o 6437  df-fv 6438  df-riota 7225  df-ov 7271  df-oprab 7272  df-mpo 7273  df-om 7701  df-1st 7817  df-2nd 7818  df-frecs 8081  df-wrecs 8112  df-recs 8186  df-rdg 8225  df-1o 8281  df-er 8472  df-ec 8474  df-qs 8478  df-map 8591  df-en 8708  df-dom 8709  df-sdom 8710  df-fin 8711  df-sup 9162  df-inf 9163  df-card 9681  df-pnf 10995  df-mnf 10996  df-xr 10997  df-ltxr 10998  df-le 10999  df-sub 11190  df-neg 11191  df-div 11616  df-nn 11957  df-2 12019  df-n0 12217  df-z 12303  df-uz 12565  df-rp 12713  df-fz 13222  df-fzo 13365  df-fl 13493  df-mod 13571  df-hash 14026  df-word 14199  df-concat 14255  df-substr 14335  df-pfx 14365  df-csh 14483  df-clwwlk 28325  df-clwwlkn 28368

This theorem is referenced by:  eleclclwwlkn  28419  hashecclwwlkn1  28420  umgrhashecclwwlk  28421