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Theorem opelres 5048
Description: Ordered pair membership in a restriction. Exercise 13 of [TakeutiZaring] p. 25. (Contributed by NM, 13-Nov-1995.)
Hypothesis
Ref Expression
opelres.1  |-  B  e. 
_V
Assertion
Ref Expression
opelres  |-  ( <. A ,  B >.  e.  ( C  |`  D )  <-> 
( <. A ,  B >.  e.  C  /\  A  e.  D ) )

Proof of Theorem opelres
StepHypRef Expression
1 df-res 4766 . . 3  |-  ( C  |`  D )  =  ( C  i^i  ( D  X.  _V ) )
21eleq2i 2301 . 2  |-  ( <. A ,  B >.  e.  ( C  |`  D )  <->  <. A ,  B >.  e.  ( C  i^i  ( D  X.  _V ) ) )
3 elin 3406 . 2  |-  ( <. A ,  B >.  e.  ( C  i^i  ( D  X.  _V ) )  <-> 
( <. A ,  B >.  e.  C  /\  <. A ,  B >.  e.  ( D  X.  _V )
) )
4 opelres.1 . . . 4  |-  B  e. 
_V
5 opelxp 4784 . . . 4  |-  ( <. A ,  B >.  e.  ( D  X.  _V ) 
<->  ( A  e.  D  /\  B  e.  _V ) )
64, 5mpbiran2 950 . . 3  |-  ( <. A ,  B >.  e.  ( D  X.  _V ) 
<->  A  e.  D )
76anbi2i 457 . 2  |-  ( (
<. A ,  B >.  e.  C  /\  <. A ,  B >.  e.  ( D  X.  _V ) )  <-> 
( <. A ,  B >.  e.  C  /\  A  e.  D ) )
82, 3, 73bitri 206 1  |-  ( <. A ,  B >.  e.  ( C  |`  D )  <-> 
( <. A ,  B >.  e.  C  /\  A  e.  D ) )
Colors of variables: wff set class
Syntax hints:    /\ wa 104    <-> wb 105    e. wcel 2205   _Vcvv 2815    i^i cin 3213   <.cop 3697    X. cxp 4752    |` cres 4756
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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-14 2208  ax-ext 2216  ax-sep 4233  ax-pow 4292  ax-pr 4327
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ral 2527  df-rex 2528  df-v 2817  df-un 3218  df-in 3220  df-ss 3227  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-opab 4177  df-xp 4760  df-res 4766
This theorem is referenced by:  brres  5049  opelresg  5050  opres  5052  dmres  5064  elres  5079  relssres  5081  resiexg  5088  iss  5089  restidsing  5099  asymref  5153  ssrnres  5210  cnvresima  5257  ressn  5308  funssres  5400  fcnvres  5555
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