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Theorem 19.26-2 1594
Description: Theorem 19.26 of [Margaris] p. 90 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 1593 . . 3
21albii 1566 . 2
3 19.26 1593 . 2
42, 3bitri 240 1
Colors of variables: wff setvar class
Syntax hints:   wb 176   wa 358  wal 1540
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1546  ax-5 1557
This theorem depends on definitions:  df-bi 177  df-an 360
This theorem is referenced by:  opelopabt  4699  fun11  5159
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