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Theorem brstruct 12340
Description: The structure relation is a relation. (Contributed by Mario Carneiro, 29-Aug-2015.)
Assertion
Ref Expression
brstruct  |-  Rel Struct

Proof of Theorem brstruct
Dummy variables  x  f are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-struct 12333 . 2  |- Struct  =  { <. f ,  x >.  |  ( x  e.  (  <_  i^i  ( NN  X.  NN ) )  /\  Fun  ( f  \  { (/)
} )  /\  dom  f  C_  ( ... `  x
) ) }
21relopabi 4724 1  |-  Rel Struct
Colors of variables: wff set class
Syntax hints:    /\ w3a 967    e. wcel 2135    \ cdif 3108    i^i cin 3110    C_ wss 3111   (/)c0 3404   {csn 3570    X. cxp 4596   dom cdm 4598   Rel wrel 4603   Fun wfun 5176   ` cfv 5182    <_ cle 7925   NNcn 8848   ...cfz 9935   Struct cstr 12327
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 699  ax-5 1434  ax-7 1435  ax-gen 1436  ax-ie1 1480  ax-ie2 1481  ax-8 1491  ax-10 1492  ax-11 1493  ax-i12 1494  ax-bndl 1496  ax-4 1497  ax-17 1513  ax-i9 1517  ax-ial 1521  ax-i5r 1522  ax-14 2138  ax-ext 2146  ax-sep 4094  ax-pow 4147  ax-pr 4181
This theorem depends on definitions:  df-bi 116  df-3an 969  df-tru 1345  df-nf 1448  df-sb 1750  df-clab 2151  df-cleq 2157  df-clel 2160  df-nfc 2295  df-ral 2447  df-rex 2448  df-v 2723  df-un 3115  df-in 3117  df-ss 3124  df-pw 3555  df-sn 3576  df-pr 3577  df-op 3579  df-opab 4038  df-xp 4604  df-rel 4605  df-struct 12333
This theorem is referenced by:  isstruct2im  12341  structex  12343
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