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Theorem wlkmex 16543
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 16542 . 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 5785 1  |-  ( W  e.  (Walks `  G
)  ->  G  e.  _V )
Colors of variables: wff set class
Syntax hints:    -> wi 4  if-wif 990    /\ w3a 1009    = wceq 1402    e. wcel 2209   A.wral 2528   _Vcvv 2821    C_ wss 3220   {csn 3708   {cpr 3709   {copab 4189   dom cdm 4772   -->wf 5371   ` cfv 5375  (class class class)co 6079   0cc0 8173   1c1 8174    + caddc 8176   ...cfz 10394  ..^cfzo 10532  ♯chash 11197  Word cword 11287  Vtxcvtx 16236  iEdgciedg 16237  Walkscwlks 16541
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 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-sep 4247  ax-pow 4309  ax-pr 4344
This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-br 4129  df-opab 4191  df-mpt 4192  df-id 4436  df-xp 4778  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-rn 4783  df-res 4784  df-ima 4785  df-iota 5335  df-fun 5377  df-fv 5383  df-wlks 16542
This theorem is referenced by:  wlkv  16550  wlkcompim  16576  wlkeq  16578
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