Theorem reximia 2645

Description: Inference quantifying both antecedent and consequent. (Contributed by NM, 10-Feb-1997.)

Hypothesis

Ref	Expression
reximia.1	|- ( x e. A -> ( ph -> ps ) )

Assertion

Ref	Expression
reximia	|- ( E. x e. A ph -> E. x e. A ps )

Proof of Theorem reximia

Step	Hyp	Ref	Expression
1		rexim 2644	. 2 |- ( A. x e. A ( ph -> ps ) -> ( E. x e. A ph -> E. x e. A ps ) )
2		reximia.1	. 2 |- ( x e. A -> ( ph -> ps ) )
3	1, 2	mprg 2607	1 |- ( E. x e. A ph -> E. x e. A ps )

This proof depends on syntax axioms:   -> wi 4   e. wcel 2209   E.wrex 2529

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1500  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-4 1563  ax-ial 1587

This proof depends on definitions:  df-bi 117  df-ral 2533  df-rex 2534

This theorem is used by:  reximi  2647  iunpw  4626  nsmallnqq  7779  1idprl  7957  1idpru  7958  qmulz  10023  zq  10026  caubnd2  11883  sin0pilem1  15882