Theorem ancomd 438

Description: Commutation of conjuncts in consequent. (Contributed by Jeff Hankins, 14-Aug-2009.)

Hypothesis

Ref	Expression
ancomd.1	|- (ph -> (ps /\ ch))

Assertion

Ref	Expression
ancomd	|- (ph -> (ch /\ ps))

Proof of Theorem ancomd

Step	Hyp	Ref	Expression
1		ancomd.1	. 2 |- (ph -> (ps /\ ch))
2		ancom 437	. 2 |- ((ps /\ ch) <-> (ch /\ ps))
3	1, 2	sylib 188	1 |- (ph -> (ch /\ ps))

Syntax hints:   -> wi 4   /\ wa 358

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This theorem depends on definitions:  df-bi 177  df-an 360

This theorem is referenced by:  simprd  449  2reu5  3045  brcnv  4893