ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  2fveq3 Unicode version

Theorem 2fveq3 5634
Description: Equality theorem for nested function values. (Contributed by AV, 14-Aug-2022.)
Assertion
Ref Expression
2fveq3  |-  ( A  =  B  ->  ( F `  ( G `  A ) )  =  ( F `  ( G `  B )
) )

Proof of Theorem 2fveq3
StepHypRef Expression
1 fveq2 5629 . 2  |-  ( A  =  B  ->  ( G `  A )  =  ( G `  B ) )
21fveq2d 5633 1  |-  ( A  =  B  ->  ( F `  ( G `  A ) )  =  ( F `  ( G `  B )
) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1395   ` cfv 5318
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 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-ext 2211
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-nf 1507  df-sb 1809  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-rex 2514  df-v 2801  df-un 3201  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3889  df-br 4084  df-iota 5278  df-fv 5326
This theorem is referenced by:  difinfsnlem  7277  ctssdclemn0  7288  cc2  7464  seq3f1olemqsum  10747  seq3f1oleml  10750  seq3f1o  10751  seq3homo  10761  seqhomog  10764  seq3coll  11077  fsumf1o  11917  iserabs  12002  explecnv  12032  cvgratnnlemnexp  12051  cvgratnnlemmn  12052  fprodf1o  12115  nninfctlemfo  12577  alginv  12585  algcvg  12586  algcvga  12589  ctiunctlemu1st  13021  ctiunctlemu2nd  13022  ctiunctlemudc  13024  ctiunctlemfo  13026  prdsbasprj  13331  prdsplusgfval  13333  prdsmulrfval  13335  prdsbas3  13336  prdsinvlem  13657  isunitd  14086  wkslem1  16066  wkslem2  16067  2wlklem  16120  subctctexmid  16453
  Copyright terms: Public domain W3C validator