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Theorem sqxpexg 4893
Description: The Cartesian square of a set is a set. (Contributed by AV, 13-Jan-2020.)
Assertion
Ref Expression
sqxpexg  |-  ( A  e.  V  ->  ( A  X.  A )  e. 
_V )

Proof of Theorem sqxpexg
StepHypRef Expression
1 xpexg 4889 . 2  |-  ( ( A  e.  V  /\  A  e.  V )  ->  ( A  X.  A
)  e.  _V )
21anidms 401 1  |-  ( A  e.  V  ->  ( A  X.  A )  e. 
_V )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    e. wcel 2209   _Vcvv 2821    X. cxp 4772
This proof depends on 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 4249  ax-pow 4311  ax-pr 4346  ax-un 4578
This proof 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-rex 2534  df-v 2823  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-opab 4193  df-xp 4780
This theorem is used by:  ispsmet  15424  ismet  15445  isxmet  15446  xmetunirn  15459
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