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Theorem relxp 4835
Description: A cross product is a relation. Theorem 3.13(i) of [Monk1] p. 37. (Contributed by NM, 2-Aug-1994.)
Assertion
Ref Expression
relxp  |-  Rel  ( A  X.  B )

Proof of Theorem relxp
StepHypRef Expression
1 xpss 4834 . 2  |-  ( A  X.  B )  C_  ( _V  X.  _V )
2 df-rel 4732 . 2  |-  ( Rel  ( A  X.  B
)  <->  ( A  X.  B )  C_  ( _V  X.  _V ) )
31, 2mpbir 146 1  |-  Rel  ( A  X.  B )
Colors of variables: wff set class
Syntax hints:   _Vcvv 2802    C_ wss 3200    X. cxp 4723   Rel wrel 4730
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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-ext 2213
This theorem depends on definitions:  df-bi 117  df-nf 1509  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-v 2804  df-in 3206  df-ss 3213  df-opab 4151  df-xp 4731  df-rel 4732
This theorem is referenced by:  xpiindim  4867  eliunxp  4869  opeliunxp2  4870  relres  5041  restidsing  5069  codir  5125  qfto  5126  cnvcnv  5189  dfco2  5236  unixpm  5272  ressn  5277  fliftcnv  5935  fliftfun  5936  opeliunxp2f  6403  reltpos  6415  tpostpos  6429  tposfo  6436  tposf  6437  swoer  6729  xpider  6774  erinxp  6777  xpcomf1o  7008  ltrel  8240  lerel  8242  fisumcom2  11998  fprodcom2fi  12186  txuni2  14979  txdis1cn  15001  xmeter  15159  reldvg  15402  lgsquadlem1  15805  lgsquadlem2  15806
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