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Theorem wlkmex 16314
Description: If there are walks on a graph, the graph is a set. (Contributed by Jim Kingdon, 1-Feb-2026.)
Assertion
Ref Expression
wlkmex (𝑊 ∈ (Walks‘𝐺) → 𝐺 ∈ V)

Proof of Theorem wlkmex
Dummy variables 𝑓 𝑔 𝑘 𝑝 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-wlks 16313 . 2 Walks = (𝑔 ∈ V ↦ {⟨𝑓, 𝑝⟩ ∣ (𝑓 ∈ Word dom (iEdg‘𝑔) ∧ 𝑝:(0...(♯‘𝑓))⟶(Vtx‘𝑔) ∧ ∀𝑘 ∈ (0..^(♯‘𝑓))if-((𝑝𝑘) = (𝑝‘(𝑘 + 1)), ((iEdg‘𝑔)‘(𝑓𝑘)) = {(𝑝𝑘)}, {(𝑝𝑘), (𝑝‘(𝑘 + 1))} ⊆ ((iEdg‘𝑔)‘(𝑓𝑘))))})
21mptrcl 5760 1 (𝑊 ∈ (Walks‘𝐺) → 𝐺 ∈ V)
Colors of variables: wff set class
Syntax hints:  wi 4  if-wif 986  w3a 1005   = wceq 1398  wcel 2203  wral 2520  Vcvv 2813  wss 3211  {csn 3689  {cpr 3690  {copab 4170  dom cdm 4749  wf 5348  cfv 5352  (class class class)co 6050  0cc0 8127  1c1 8128   + caddc 8130  ...cfz 10342  ..^cfzo 10476  chash 11138  Word cword 11224  Vtxcvtx 16007  iEdgciedg 16008  Walkscwlks 16312
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-14 2206  ax-ext 2214  ax-sep 4228  ax-pow 4287  ax-pr 4322
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ral 2525  df-rex 2526  df-rab 2529  df-v 2815  df-un 3215  df-in 3217  df-ss 3224  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-br 4110  df-opab 4172  df-mpt 4173  df-id 4414  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-res 4761  df-ima 4762  df-iota 5312  df-fun 5354  df-fv 5360  df-wlks 16313
This theorem is referenced by:  wlkv  16321  wlkcompim  16347  wlkeq  16349
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