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Theorem feq1i 5330
Description: Equality inference for functions. (Contributed by Paul Chapman, 22-Jun-2011.)
Hypothesis
Ref Expression
feq1i.1  |-  F  =  G
Assertion
Ref Expression
feq1i  |-  ( F : A --> B  <->  G : A
--> B )

Proof of Theorem feq1i
StepHypRef Expression
1 feq1i.1 . 2  |-  F  =  G
2 feq1 5320 . 2  |-  ( F  =  G  ->  ( F : A --> B  <->  G : A
--> B ) )
31, 2ax-mp 5 1  |-  ( F : A --> B  <->  G : A
--> B )
Colors of variables: wff set class
Syntax hints:    <-> wb 104    = wceq 1343   -->wf 5184
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 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-ext 2147
This theorem depends on definitions:  df-bi 116  df-3an 970  df-tru 1346  df-nf 1449  df-sb 1751  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-v 2728  df-un 3120  df-in 3122  df-ss 3129  df-sn 3582  df-pr 3583  df-op 3585  df-br 3983  df-opab 4044  df-rel 4611  df-cnv 4612  df-co 4613  df-dm 4614  df-rn 4615  df-fun 5190  df-fn 5191  df-f 5192
This theorem is referenced by:  ftpg  5669  frecfcllem  6372  frecsuclem  6374  omp1eomlem  7059  frecuzrdgrcl  10345  frecuzrdgrclt  10350  fxnn0nninf  10373  resqrexlemf  10949  algrf  11977  eulerthlemh  12163  eulerthlemth  12164  ennnfonelemh  12337  nninfdclemf  12382  limcmpted  13272  dvexp  13315  efcn  13329  subctctexmid  13881
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