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Theorem ralun 3258
Description: Restricted quantification over union. (Contributed by Jeff Madsen, 2-Sep-2009.)
Assertion
Ref Expression
ralun  |-  ( ( A. x  e.  A  ph 
/\  A. x  e.  B  ph )  ->  A. x  e.  ( A  u.  B
) ph )

Proof of Theorem ralun
StepHypRef Expression
1 ralunb 3257 . 2  |-  ( A. x  e.  ( A  u.  B ) ph  <->  ( A. x  e.  A  ph  /\  A. x  e.  B  ph ) )
21biimpri 132 1  |-  ( ( A. x  e.  A  ph 
/\  A. x  e.  B  ph )  ->  A. x  e.  ( A  u.  B
) ph )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103   A.wral 2416    u. cun 3069
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2121
This theorem depends on definitions:  df-bi 116  df-tru 1334  df-nf 1437  df-sb 1736  df-clab 2126  df-cleq 2132  df-clel 2135  df-nfc 2270  df-ral 2421  df-v 2688  df-un 3075
This theorem is referenced by:  omsinds  4535  ac6sfi  6792  fimax2gtrilemstep  6794  finomni  7012  uzsinds  10215  iseqf1olemqk  10267  seq3f1olemstep  10274  fimaxre2  10998  modfsummod  11227
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