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Theorem r19.40 2762
Description: Restricted quantifier version of Theorem 19.40 of [Margaris] p. 90. (Contributed by NM, 2-Apr-2004.)
Assertion
Ref Expression
r19.40

Proof of Theorem r19.40
StepHypRef Expression
1 simpl 443 . . 3
21reximi 2721 . 2
3 simpr 447 . . 3
43reximi 2721 . 2
52, 4jca 518 1
Colors of variables: wff setvar class
Syntax hints:   wi 4   wa 358  wrex 2615
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1546  ax-5 1557
This theorem depends on definitions:  df-bi 177  df-an 360  df-ex 1542  df-ral 2619  df-rex 2620
This theorem is referenced by: (None)
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