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Theorem r19.21bi 2401
Description: Inference from Theorem 19.21 of [Margaris] p. 90. (Restricted quantifier version.) (Contributed by NM, 20-Nov-1994.)
Hypothesis
Ref Expression
r19.21bi.1
Assertion
Ref Expression
r19.21bi

Proof of Theorem r19.21bi
StepHypRef Expression
1 r19.21bi.1 . . . 4
2 df-ral 2305 . . . 4
31, 2sylib 127 . . 3
4319.21bi 1447 . 2
54imp 115 1
Colors of variables: wff set class
Syntax hints:   wi 4   wa 97  wal 1240   wcel 1390  wral 2300
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-4 1397
This theorem depends on definitions:  df-bi 110  df-ral 2305
This theorem is referenced by:  rspec2  2402  rspec3  2403  r19.21be  2404  ordelord  4084  ralxfr2d  4162  rexxfr2d  4163  funfveu  5131  f1oresrab  5272  isoselem  5402  tfrlemisucaccv  5880  prcdnql  6467  prcunqu  6468  prdisj  6475
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