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Theorem eliniseg2 5049
Description: Eliminate the class existence constraint in eliniseg 5039. (Contributed by Mario Carneiro, 5-Dec-2014.) (Revised by Mario Carneiro, 17-Nov-2015.)
Assertion
Ref Expression
eliniseg2  |-  ( Rel 
A  ->  ( C  e.  ( `' A " { B } )  <->  C A B ) )

Proof of Theorem eliniseg2
StepHypRef Expression
1 relcnv 5047 . . 3  |-  Rel  `' A
2 elrelimasn 5035 . . 3  |-  ( Rel  `' A  ->  ( C  e.  ( `' A " { B } )  <-> 
B `' A C ) )
31, 2ax-mp 5 . 2  |-  ( C  e.  ( `' A " { B } )  <-> 
B `' A C )
4 relbrcnvg 5048 . 2  |-  ( Rel 
A  ->  ( B `' A C  <->  C A B ) )
53, 4bitrid 192 1  |-  ( Rel 
A  ->  ( C  e.  ( `' A " { B } )  <->  C A B ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 105    e. wcel 2167   {csn 3622   class class class wbr 4033   `'ccnv 4662   "cima 4666   Rel wrel 4668
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 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-14 2170  ax-ext 2178  ax-sep 4151  ax-pow 4207  ax-pr 4242
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1475  df-sb 1777  df-eu 2048  df-mo 2049  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ral 2480  df-rex 2481  df-v 2765  df-sbc 2990  df-un 3161  df-in 3163  df-ss 3170  df-pw 3607  df-sn 3628  df-pr 3629  df-op 3631  df-br 4034  df-opab 4095  df-xp 4669  df-rel 4670  df-cnv 4671  df-dm 4673  df-rn 4674  df-res 4675  df-ima 4676
This theorem is referenced by:  isunitd  13662
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