Theorem alim 1510

Description: Theorem 19.20 of [Margaris] p. 90. (Contributed by NM, 5-Aug-1993.) (Proof shortened by O'Cat, 30-Mar-2008.)

Assertion

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

Proof of Theorem alim

Step	Hyp	Ref	Expression
1		ax-5 1500	1 |- ( A. x ( ph -> ps ) -> ( A. x ph -> A. x ps ) )

This proof depends on syntax axioms:   -> wi 4   A.wal 1400

This proof depends on axioms:  ax-5 1500

This theorem is used by:  al2imi  1511  19.21h  1610  nfalt  1631  19.21ht  1634  mor  2129  bj-stal  16777  bj-hbalt  16791