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Theorem wlkmex 16169
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  e.  (Walks `  G
)  ->  G  e.  _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 16168 . 2  |- Walks  =  ( g  e.  _V  |->  {
<. f ,  p >.  |  ( f  e. Word  dom  (iEdg `  g )  /\  p : ( 0 ... ( `  f )
) --> (Vtx `  g
)  /\  A. k  e.  ( 0..^ ( `  f
) )if- ( ( p `  k )  =  ( p `  ( k  +  1 ) ) ,  ( (iEdg `  g ) `  ( f `  k
) )  =  {
( p `  k
) } ,  {
( p `  k
) ,  ( p `
 ( k  +  1 ) ) } 
C_  ( (iEdg `  g ) `  (
f `  k )
) ) ) } )
21mptrcl 5729 1  |-  ( W  e.  (Walks `  G
)  ->  G  e.  _V )
Colors of variables: wff set class
Syntax hints:    -> wi 4  if-wif 985    /\ w3a 1004    = wceq 1397    e. wcel 2202   A.wral 2510   _Vcvv 2802    C_ wss 3200   {csn 3669   {cpr 3670   {copab 4149   dom cdm 4725   -->wf 5322   ` cfv 5326  (class class class)co 6017   0cc0 8031   1c1 8032    + caddc 8034   ...cfz 10242  ..^cfzo 10376  ♯chash 11036  Word cword 11112  Vtxcvtx 15862  iEdgciedg 15863  Walkscwlks 16167
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ral 2515  df-rex 2516  df-rab 2519  df-v 2804  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fv 5334  df-wlks 16168
This theorem is referenced by:  wlkv  16176  wlkcompim  16202  wlkeq  16204
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