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Theorem funfvbrb 5825
Description: Two ways to say that  A is in the domain of  F. (Contributed by Mario Carneiro, 1-May-2014.)
Assertion
Ref Expression
funfvbrb  |-  ( Fun 
F  ->  ( A  e.  dom  F  <->  A F
( F `  A
) ) )

Proof of Theorem funfvbrb
StepHypRef Expression
1 funfvop 5824 . . 3  |-  ( ( Fun  F  /\  A  e.  dom  F )  ->  <. A ,  ( F `
 A ) >.  e.  F )
2 df-br 4132 . . 3  |-  ( A F ( F `  A )  <->  <. A , 
( F `  A
) >.  e.  F )
31, 2sylibr 134 . 2  |-  ( ( Fun  F  /\  A  e.  dom  F )  ->  A F ( F `  A ) )
4 funrel 5397 . . 3  |-  ( Fun 
F  ->  Rel  F )
5 releldm 5019 . . 3  |-  ( ( Rel  F  /\  A F ( F `  A ) )  ->  A  e.  dom  F )
64, 5sylan 283 . 2  |-  ( ( Fun  F  /\  A F ( F `  A ) )  ->  A  e.  dom  F )
73, 6impbida 604 1  |-  ( Fun 
F  ->  ( A  e.  dom  F  <->  A F
( F `  A
) ) )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    /\ wa 104    <-> wb 105    e. wcel 2209   <.cop 3712   class class class wbr 4131   dom cdm 4776   Rel wrel 4781   Fun wfun 5374   ` cfv 5380
This proof depends on 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 4251  ax-pow 4313  ax-pr 4348
This proof 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-v 2823  df-sbc 3052  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-br 4132  df-opab 4194  df-id 4440  df-xp 4782  df-rel 4783  df-cnv 4784  df-co 4785  df-dm 4786  df-iota 5340  df-fun 5382  df-fn 5383  df-fv 5388
This theorem is used by:  fmptco  5877  climdm  12086  dvaddxx  15929  dvmulxx  15930  dviaddf  15931  dvimulf  15932  dvcjbr  15934
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