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Theorem opelxp2 4723
Description: The second member of an ordered pair of classes in a cross product belongs to second cross product argument. (Contributed by Mario Carneiro, 26-Apr-2015.)
Assertion
Ref Expression
opelxp2  |-  ( <. A ,  B >.  e.  ( C  X.  D
)  ->  B  e.  D )

Proof of Theorem opelxp2
StepHypRef Expression
1 opelxp 4719 . 2  |-  ( <. A ,  B >.  e.  ( C  X.  D
)  <->  ( A  e.  C  /\  B  e.  D ) )
21simprbi 450 1  |-  ( <. A ,  B >.  e.  ( C  X.  D
)  ->  B  e.  D )
Colors of variables: wff set class
Syntax hints:    -> wi 4    e. wcel 1684   <.cop 3643    X. cxp 4687
This theorem is referenced by:  dff4  5674  eceqoveq  6763  isfin4-3  7941  axdc4lem  8081  canthp1lem2  8275  txcmplem1  17335  txlm  17342  nvex  21167  pprodss4v  24424  brcgr  24528
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1533  ax-5 1544  ax-17 1603  ax-9 1635  ax-8 1643  ax-14 1688  ax-6 1703  ax-7 1708  ax-11 1715  ax-12 1866  ax-ext 2264  ax-sep 4141  ax-nul 4149  ax-pr 4214
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3an 936  df-tru 1310  df-ex 1529  df-nf 1532  df-sb 1630  df-clab 2270  df-cleq 2276  df-clel 2279  df-nfc 2408  df-ne 2448  df-ral 2548  df-rex 2549  df-rab 2552  df-v 2790  df-dif 3155  df-un 3157  df-in 3159  df-ss 3166  df-nul 3456  df-if 3566  df-sn 3646  df-pr 3647  df-op 3649  df-opab 4078  df-xp 4695
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