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Theorem 19.26-2 1681
Description: Theorem 19.26 1680 with two quantifiers. (Contributed by NM, 3-Feb-2005.)
Assertion
Ref Expression
19.26-2

Proof of Theorem 19.26-2
StepHypRef Expression
1 19.26 1680 . . 3
21albii 1640 . 2
3 19.26 1680 . 2
42, 3bitri 249 1
Colors of variables: wff setvar class
Syntax hints:  <->wb 184  /\wa 369  A.wal 1393
This theorem is referenced by:  2mo2  2372  opelopabt  4764  fun11  5658  dford4  30971
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1618  ax-4 1631
This theorem depends on definitions:  df-bi 185  df-an 371
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