Theorem hbim1 1502

Description: A closed form of hbim 1477. (Contributed by NM, 5-Aug-1993.)

Hypotheses

Ref	Expression
hbim1.1	|- ( ph -> A. x ph )
hbim1.2	|- ( ph -> ( ps -> A. x ps ) )

Assertion

Ref	Expression
hbim1	|- ( ( ph -> ps ) -> A. x ( ph -> ps ) )

Proof of Theorem hbim1

Step	Hyp	Ref	Expression
1		hbim1.2	. . 3 |- ( ph -> ( ps -> A. x ps ) )
2	1	a2i 11	. 2 |- ( ( ph -> ps ) -> ( ph -> A. x ps ) )
3		hbim1.1	. . 3 |- ( ph -> A. x ph )
4	3	19.21h 1489	. 2 |- ( A. x ( ph -> ps ) <-> ( ph -> A. x ps ) )
5	2, 4	sylibr 132	1 |- ( ( ph -> ps ) -> A. x ( ph -> ps ) )

Syntax hints:   -> wi 4   A.wal 1282

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-5 1376  ax-gen 1378  ax-4 1440  ax-ial 1467  ax-i5r 1468

This theorem depends on definitions:  df-bi 115

This theorem is referenced by:  nfim1  1503  sbco2d  1881  sbco2vd  1882