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Theorem clwwlknon1 27886
Description: The set of closed walks on vertex 𝑋 of length 1 in a graph 𝐺 as words over the set of vertices. (Contributed by AV, 11-Feb-2022.) (Revised by AV, 25-Feb-2022.) (Proof shortened by AV, 24-Mar-2022.)
Hypotheses
Ref Expression
clwwlknon1.v 𝑉 = (Vtx‘𝐺)
clwwlknon1.c 𝐶 = (ClWWalksNOn‘𝐺)
clwwlknon1.e 𝐸 = (Edg‘𝐺)
Assertion
Ref Expression
clwwlknon1 (𝑋𝑉 → (𝑋𝐶1) = {𝑤 ∈ Word 𝑉 ∣ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸)})
Distinct variable groups:   𝑤,𝐺   𝑤,𝑉   𝑤,𝑋
Allowed substitution hints:   𝐶(𝑤)   𝐸(𝑤)

Proof of Theorem clwwlknon1
StepHypRef Expression
1 clwwlknon1.c . . . 4 𝐶 = (ClWWalksNOn‘𝐺)
21oveqi 7152 . . 3 (𝑋𝐶1) = (𝑋(ClWWalksNOn‘𝐺)1)
32a1i 11 . 2 (𝑋𝑉 → (𝑋𝐶1) = (𝑋(ClWWalksNOn‘𝐺)1))
4 clwwlknon 27879 . . 3 (𝑋(ClWWalksNOn‘𝐺)1) = {𝑤 ∈ (1 ClWWalksN 𝐺) ∣ (𝑤‘0) = 𝑋}
54a1i 11 . 2 (𝑋𝑉 → (𝑋(ClWWalksNOn‘𝐺)1) = {𝑤 ∈ (1 ClWWalksN 𝐺) ∣ (𝑤‘0) = 𝑋})
6 clwwlkn1 27830 . . . . 5 (𝑤 ∈ (1 ClWWalksN 𝐺) ↔ ((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)))
76anbi1i 626 . . . 4 ((𝑤 ∈ (1 ClWWalksN 𝐺) ∧ (𝑤‘0) = 𝑋) ↔ (((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋))
8 clwwlknon1.v . . . . . . . . . . . 12 𝑉 = (Vtx‘𝐺)
98eqcomi 2810 . . . . . . . . . . 11 (Vtx‘𝐺) = 𝑉
109wrdeqi 13884 . . . . . . . . . 10 Word (Vtx‘𝐺) = Word 𝑉
1110eleq2i 2884 . . . . . . . . 9 (𝑤 ∈ Word (Vtx‘𝐺) ↔ 𝑤 ∈ Word 𝑉)
1211biimpi 219 . . . . . . . 8 (𝑤 ∈ Word (Vtx‘𝐺) → 𝑤 ∈ Word 𝑉)
13123ad2ant2 1131 . . . . . . 7 (((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) → 𝑤 ∈ Word 𝑉)
1413ad2antrl 727 . . . . . 6 ((𝑋𝑉 ∧ (((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋)) → 𝑤 ∈ Word 𝑉)
1513adantr 484 . . . . . . . . 9 ((((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋) → 𝑤 ∈ Word 𝑉)
16 simpl1 1188 . . . . . . . . 9 ((((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋) → (♯‘𝑤) = 1)
17 simpr 488 . . . . . . . . 9 ((((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋) → (𝑤‘0) = 𝑋)
1815, 16, 173jca 1125 . . . . . . . 8 ((((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋) → (𝑤 ∈ Word 𝑉 ∧ (♯‘𝑤) = 1 ∧ (𝑤‘0) = 𝑋))
1918adantl 485 . . . . . . 7 ((𝑋𝑉 ∧ (((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋)) → (𝑤 ∈ Word 𝑉 ∧ (♯‘𝑤) = 1 ∧ (𝑤‘0) = 𝑋))
20 wrdl1s1 13963 . . . . . . . 8 (𝑋𝑉 → (𝑤 = ⟨“𝑋”⟩ ↔ (𝑤 ∈ Word 𝑉 ∧ (♯‘𝑤) = 1 ∧ (𝑤‘0) = 𝑋)))
2120adantr 484 . . . . . . 7 ((𝑋𝑉 ∧ (((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋)) → (𝑤 = ⟨“𝑋”⟩ ↔ (𝑤 ∈ Word 𝑉 ∧ (♯‘𝑤) = 1 ∧ (𝑤‘0) = 𝑋)))
2219, 21mpbird 260 . . . . . 6 ((𝑋𝑉 ∧ (((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋)) → 𝑤 = ⟨“𝑋”⟩)
23 sneq 4538 . . . . . . . . . . . . 13 ((𝑤‘0) = 𝑋 → {(𝑤‘0)} = {𝑋})
24 clwwlknon1.e . . . . . . . . . . . . . . 15 𝐸 = (Edg‘𝐺)
2524eqcomi 2810 . . . . . . . . . . . . . 14 (Edg‘𝐺) = 𝐸
2625a1i 11 . . . . . . . . . . . . 13 ((𝑤‘0) = 𝑋 → (Edg‘𝐺) = 𝐸)
2723, 26eleq12d 2887 . . . . . . . . . . . 12 ((𝑤‘0) = 𝑋 → ({(𝑤‘0)} ∈ (Edg‘𝐺) ↔ {𝑋} ∈ 𝐸))
2827biimpd 232 . . . . . . . . . . 11 ((𝑤‘0) = 𝑋 → ({(𝑤‘0)} ∈ (Edg‘𝐺) → {𝑋} ∈ 𝐸))
2928a1i 11 . . . . . . . . . 10 (𝑋𝑉 → ((𝑤‘0) = 𝑋 → ({(𝑤‘0)} ∈ (Edg‘𝐺) → {𝑋} ∈ 𝐸)))
3029com13 88 . . . . . . . . 9 ({(𝑤‘0)} ∈ (Edg‘𝐺) → ((𝑤‘0) = 𝑋 → (𝑋𝑉 → {𝑋} ∈ 𝐸)))
31303ad2ant3 1132 . . . . . . . 8 (((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) → ((𝑤‘0) = 𝑋 → (𝑋𝑉 → {𝑋} ∈ 𝐸)))
3231imp 410 . . . . . . 7 ((((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋) → (𝑋𝑉 → {𝑋} ∈ 𝐸))
3332impcom 411 . . . . . 6 ((𝑋𝑉 ∧ (((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋)) → {𝑋} ∈ 𝐸)
3414, 22, 33jca32 519 . . . . 5 ((𝑋𝑉 ∧ (((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋)) → (𝑤 ∈ Word 𝑉 ∧ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸)))
35 fveq2 6649 . . . . . . . . . 10 (𝑤 = ⟨“𝑋”⟩ → (♯‘𝑤) = (♯‘⟨“𝑋”⟩))
36 s1len 13955 . . . . . . . . . 10 (♯‘⟨“𝑋”⟩) = 1
3735, 36eqtrdi 2852 . . . . . . . . 9 (𝑤 = ⟨“𝑋”⟩ → (♯‘𝑤) = 1)
3837ad2antrl 727 . . . . . . . 8 ((𝑤 ∈ Word 𝑉 ∧ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸)) → (♯‘𝑤) = 1)
3938adantl 485 . . . . . . 7 ((𝑋𝑉 ∧ (𝑤 ∈ Word 𝑉 ∧ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸))) → (♯‘𝑤) = 1)
408wrdeqi 13884 . . . . . . . . . 10 Word 𝑉 = Word (Vtx‘𝐺)
4140eleq2i 2884 . . . . . . . . 9 (𝑤 ∈ Word 𝑉𝑤 ∈ Word (Vtx‘𝐺))
4241biimpi 219 . . . . . . . 8 (𝑤 ∈ Word 𝑉𝑤 ∈ Word (Vtx‘𝐺))
4342ad2antrl 727 . . . . . . 7 ((𝑋𝑉 ∧ (𝑤 ∈ Word 𝑉 ∧ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸))) → 𝑤 ∈ Word (Vtx‘𝐺))
44 fveq1 6648 . . . . . . . . . . . . . . 15 (𝑤 = ⟨“𝑋”⟩ → (𝑤‘0) = (⟨“𝑋”⟩‘0))
45 s1fv 13959 . . . . . . . . . . . . . . 15 (𝑋𝑉 → (⟨“𝑋”⟩‘0) = 𝑋)
4644, 45sylan9eq 2856 . . . . . . . . . . . . . 14 ((𝑤 = ⟨“𝑋”⟩ ∧ 𝑋𝑉) → (𝑤‘0) = 𝑋)
4746eqcomd 2807 . . . . . . . . . . . . 13 ((𝑤 = ⟨“𝑋”⟩ ∧ 𝑋𝑉) → 𝑋 = (𝑤‘0))
4847sneqd 4540 . . . . . . . . . . . 12 ((𝑤 = ⟨“𝑋”⟩ ∧ 𝑋𝑉) → {𝑋} = {(𝑤‘0)})
4924a1i 11 . . . . . . . . . . . 12 ((𝑤 = ⟨“𝑋”⟩ ∧ 𝑋𝑉) → 𝐸 = (Edg‘𝐺))
5048, 49eleq12d 2887 . . . . . . . . . . 11 ((𝑤 = ⟨“𝑋”⟩ ∧ 𝑋𝑉) → ({𝑋} ∈ 𝐸 ↔ {(𝑤‘0)} ∈ (Edg‘𝐺)))
5150biimpd 232 . . . . . . . . . 10 ((𝑤 = ⟨“𝑋”⟩ ∧ 𝑋𝑉) → ({𝑋} ∈ 𝐸 → {(𝑤‘0)} ∈ (Edg‘𝐺)))
5251impancom 455 . . . . . . . . 9 ((𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸) → (𝑋𝑉 → {(𝑤‘0)} ∈ (Edg‘𝐺)))
5352adantl 485 . . . . . . . 8 ((𝑤 ∈ Word 𝑉 ∧ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸)) → (𝑋𝑉 → {(𝑤‘0)} ∈ (Edg‘𝐺)))
5453impcom 411 . . . . . . 7 ((𝑋𝑉 ∧ (𝑤 ∈ Word 𝑉 ∧ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸))) → {(𝑤‘0)} ∈ (Edg‘𝐺))
5539, 43, 543jca 1125 . . . . . 6 ((𝑋𝑉 ∧ (𝑤 ∈ Word 𝑉 ∧ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸))) → ((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)))
5646ex 416 . . . . . . . 8 (𝑤 = ⟨“𝑋”⟩ → (𝑋𝑉 → (𝑤‘0) = 𝑋))
5756ad2antrl 727 . . . . . . 7 ((𝑤 ∈ Word 𝑉 ∧ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸)) → (𝑋𝑉 → (𝑤‘0) = 𝑋))
5857impcom 411 . . . . . 6 ((𝑋𝑉 ∧ (𝑤 ∈ Word 𝑉 ∧ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸))) → (𝑤‘0) = 𝑋)
5955, 58jca 515 . . . . 5 ((𝑋𝑉 ∧ (𝑤 ∈ Word 𝑉 ∧ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸))) → (((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋))
6034, 59impbida 800 . . . 4 (𝑋𝑉 → ((((♯‘𝑤) = 1 ∧ 𝑤 ∈ Word (Vtx‘𝐺) ∧ {(𝑤‘0)} ∈ (Edg‘𝐺)) ∧ (𝑤‘0) = 𝑋) ↔ (𝑤 ∈ Word 𝑉 ∧ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸))))
617, 60syl5bb 286 . . 3 (𝑋𝑉 → ((𝑤 ∈ (1 ClWWalksN 𝐺) ∧ (𝑤‘0) = 𝑋) ↔ (𝑤 ∈ Word 𝑉 ∧ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸))))
6261rabbidva2 3426 . 2 (𝑋𝑉 → {𝑤 ∈ (1 ClWWalksN 𝐺) ∣ (𝑤‘0) = 𝑋} = {𝑤 ∈ Word 𝑉 ∣ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸)})
633, 5, 623eqtrd 2840 1 (𝑋𝑉 → (𝑋𝐶1) = {𝑤 ∈ Word 𝑉 ∣ (𝑤 = ⟨“𝑋”⟩ ∧ {𝑋} ∈ 𝐸)})
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 399  w3a 1084   = wceq 1538  wcel 2112  {crab 3113  {csn 4528  cfv 6328  (class class class)co 7139  0cc0 10530  1c1 10531  chash 13690  Word cword 13861  ⟨“cs1 13944  Vtxcvtx 26793  Edgcedg 26844   ClWWalksN cclwwlkn 27813  ClWWalksNOncclwwlknon 27876
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 1911  ax-6 1970  ax-7 2015  ax-8 2114  ax-9 2122  ax-10 2143  ax-11 2159  ax-12 2176  ax-ext 2773  ax-rep 5157  ax-sep 5170  ax-nul 5177  ax-pow 5234  ax-pr 5298  ax-un 7445  ax-cnex 10586  ax-resscn 10587  ax-1cn 10588  ax-icn 10589  ax-addcl 10590  ax-addrcl 10591  ax-mulcl 10592  ax-mulrcl 10593  ax-mulcom 10594  ax-addass 10595  ax-mulass 10596  ax-distr 10597  ax-i2m1 10598  ax-1ne0 10599  ax-1rid 10600  ax-rnegex 10601  ax-rrecex 10602  ax-cnre 10603  ax-pre-lttri 10604  ax-pre-lttrn 10605  ax-pre-ltadd 10606  ax-pre-mulgt0 10607
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3or 1085  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2601  df-eu 2632  df-clab 2780  df-cleq 2794  df-clel 2873  df-nfc 2941  df-ne 2991  df-nel 3095  df-ral 3114  df-rex 3115  df-reu 3116  df-rab 3118  df-v 3446  df-sbc 3724  df-csb 3832  df-dif 3887  df-un 3889  df-in 3891  df-ss 3901  df-pss 3903  df-nul 4247  df-if 4429  df-pw 4502  df-sn 4529  df-pr 4531  df-tp 4533  df-op 4535  df-uni 4804  df-int 4842  df-iun 4886  df-br 5034  df-opab 5096  df-mpt 5114  df-tr 5140  df-id 5428  df-eprel 5433  df-po 5442  df-so 5443  df-fr 5482  df-we 5484  df-xp 5529  df-rel 5530  df-cnv 5531  df-co 5532  df-dm 5533  df-rn 5534  df-res 5535  df-ima 5536  df-pred 6120  df-ord 6166  df-on 6167  df-lim 6168  df-suc 6169  df-iota 6287  df-fun 6330  df-fn 6331  df-f 6332  df-f1 6333  df-fo 6334  df-f1o 6335  df-fv 6336  df-riota 7097  df-ov 7142  df-oprab 7143  df-mpo 7144  df-om 7565  df-1st 7675  df-2nd 7676  df-wrecs 7934  df-recs 7995  df-rdg 8033  df-1o 8089  df-oadd 8093  df-er 8276  df-map 8395  df-en 8497  df-dom 8498  df-sdom 8499  df-fin 8500  df-card 9356  df-pnf 10670  df-mnf 10671  df-xr 10672  df-ltxr 10673  df-le 10674  df-sub 10865  df-neg 10866  df-nn 11630  df-n0 11890  df-xnn0 11960  df-z 11974  df-uz 12236  df-fz 12890  df-fzo 13033  df-hash 13691  df-word 13862  df-lsw 13910  df-s1 13945  df-clwwlk 27771  df-clwwlkn 27814  df-clwwlknon 27877
This theorem is referenced by:  clwwlknon1loop  27887  clwwlknon1nloop  27888
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