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Theorem opelcn 8183
Description: Ordered pair membership in the class of complex numbers. (Contributed by NM, 14-May-1996.)
Assertion
Ref Expression
opelcn  |-  ( <. A ,  B >.  e.  CC  <->  ( A  e. 
R.  /\  B  e.  R. ) )

Proof of Theorem opelcn
StepHypRef Expression
1 df-c 8175 . . 3  |-  CC  =  ( R.  X.  R. )
21eleq2i 2305 . 2  |-  ( <. A ,  B >.  e.  CC  <->  <. A ,  B >.  e.  ( R.  X.  R. ) )
3 opelxp 4799 . 2  |-  ( <. A ,  B >.  e.  ( R.  X.  R. ) 
<->  ( A  e.  R.  /\  B  e.  R. )
)
42, 3bitri 184 1  |-  ( <. A ,  B >.  e.  CC  <->  ( A  e. 
R.  /\  B  e.  R. ) )
Colors of variables: wff set class
Syntax hints:    /\ wa 104    <-> wb 105    e. wcel 2209   <.cop 3708    X. cxp 4767   R.cnr 7654   CCcc 8167
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 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 4244  ax-pow 4306  ax-pr 4341
This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-v 2823  df-un 3224  df-in 3226  df-ss 3233  df-pw 3687  df-sn 3711  df-pr 3712  df-op 3714  df-opab 4188  df-xp 4775  df-c 8175
This theorem is referenced by:  axicn  8220
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