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Theorem opabssxp 4798
Description: An abstraction relation is a subset of a related cross product. (Contributed by NM, 16-Jul-1995.)
Assertion
Ref Expression
opabssxp  |-  { <. x ,  y >.  |  ( ( x  e.  A  /\  y  e.  B
)  /\  ph ) } 
C_  ( A  X.  B )
Distinct variable groups:    x, y, A   
x, B, y
Allowed substitution hints:    ph( x, y)

Proof of Theorem opabssxp
StepHypRef Expression
1 simpl 109 . . 3  |-  ( ( ( x  e.  A  /\  y  e.  B
)  /\  ph )  -> 
( x  e.  A  /\  y  e.  B
) )
21ssopab2i 4370 . 2  |-  { <. x ,  y >.  |  ( ( x  e.  A  /\  y  e.  B
)  /\  ph ) } 
C_  { <. x ,  y >.  |  ( x  e.  A  /\  y  e.  B ) }
3 df-xp 4729 . 2  |-  ( A  X.  B )  =  { <. x ,  y
>.  |  ( x  e.  A  /\  y  e.  B ) }
42, 3sseqtrri 3260 1  |-  { <. x ,  y >.  |  ( ( x  e.  A  /\  y  e.  B
)  /\  ph ) } 
C_  ( A  X.  B )
Colors of variables: wff set class
Syntax hints:    /\ wa 104    e. wcel 2200    C_ wss 3198   {copab 4147    X. cxp 4721
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-ext 2211
This theorem depends on definitions:  df-bi 117  df-nf 1507  df-sb 1809  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-in 3204  df-ss 3211  df-opab 4149  df-xp 4729
This theorem is referenced by:  brab2ga  4799  dmoprabss  6098  ecopovsym  6795  ecopovtrn  6796  ecopover  6797  ecopovsymg  6798  ecopovtrng  6799  ecopoverg  6800  opabfi  7123  netap  7463  2omotaplemap  7466  2omotaplemst  7467  enqex  7570  ltrelnq  7575  enq0ex  7649  ltrelpr  7715  enrex  7947  ltrelsr  7948  ltrelre  8043  ltrelxr  8230  dvdszrcl  12343  prdsex  13342  prdsval  13346  prdsbaslemss  13347  releqgg  13797  eqgex  13798  aprval  14286  aprap  14290  lmfval  14907  lgsquadlemofi  15795  lgsquadlem1  15796  lgsquadlem2  15797
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