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Theorem wlkmex 16363
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 16362 . 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 5762 1  |-  ( W  e.  (Walks `  G
)  ->  G  e.  _V )
Colors of variables: wff set class
Syntax hints:    -> wi 4  if-wif 986    /\ w3a 1005    = wceq 1398    e. wcel 2205   A.wral 2522   _Vcvv 2815    C_ wss 3213   {csn 3691   {cpr 3692   {copab 4172   dom cdm 4751   -->wf 5350   ` cfv 5354  (class class class)co 6052   0cc0 8132   1c1 8133    + caddc 8135   ...cfz 10348  ..^cfzo 10483  ♯chash 11146  Word cword 11232  Vtxcvtx 16056  iEdgciedg 16057  Walkscwlks 16361
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 2208  ax-ext 2216  ax-sep 4230  ax-pow 4289  ax-pr 4324
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ral 2527  df-rex 2528  df-rab 2531  df-v 2817  df-un 3217  df-in 3219  df-ss 3226  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-br 4112  df-opab 4174  df-mpt 4175  df-id 4416  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-rn 4762  df-res 4763  df-ima 4764  df-iota 5314  df-fun 5356  df-fv 5362  df-wlks 16362
This theorem is referenced by:  wlkv  16370  wlkcompim  16396  wlkeq  16398
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