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Theorem opelres 5016
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 4735 . . 3  |-  ( C  |`  D )  =  ( C  i^i  ( D  X.  _V ) )
21eleq2i 2296 . 2  |-  ( <. A ,  B >.  e.  ( C  |`  D )  <->  <. A ,  B >.  e.  ( C  i^i  ( D  X.  _V ) ) )
3 elin 3388 . 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 4753 . . . 4  |-  ( <. A ,  B >.  e.  ( D  X.  _V ) 
<->  ( A  e.  D  /\  B  e.  _V ) )
64, 5mpbiran2 947 . . 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 2200   _Vcvv 2800    i^i cin 3197   <.cop 3670    X. cxp 4721    |` cres 4725
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-14 2203  ax-ext 2211  ax-sep 4205  ax-pow 4262  ax-pr 4297
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-ral 2513  df-rex 2514  df-v 2802  df-un 3202  df-in 3204  df-ss 3211  df-pw 3652  df-sn 3673  df-pr 3674  df-op 3676  df-opab 4149  df-xp 4729  df-res 4735
This theorem is referenced by:  brres  5017  opelresg  5018  opres  5020  dmres  5032  elres  5047  relssres  5049  resiexg  5056  iss  5057  restidsing  5067  asymref  5120  ssrnres  5177  cnvresima  5224  ressn  5275  funssres  5366  fcnvres  5517
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