Theorem simplbiim 379

Description: Implication from an eliminated conjunct equivalent to the antecedent. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.)

Hypotheses

Ref	Expression
simplbiim.1	|- ( ph <-> ( ps /\ ch ) )
simplbiim.2	|- ( ch -> th )

Assertion

Ref	Expression
simplbiim	|- ( ph -> th )

Proof of Theorem simplbiim

Step	Hyp	Ref	Expression
1		simplbiim.1	. 2 |- ( ph <-> ( ps /\ ch ) )
2		simplbiim.2	. . 3 |- ( ch -> th )
3	2	adantl 271	. 2 |- ( ( ps /\ ch ) -> th )
4	1, 3	sylbi 119	1 |- ( ph -> th )

Syntax hints:   -> wi 4   /\ wa 102   <-> wb 103

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106

This theorem depends on definitions:  df-bi 115

This theorem is referenced by:  zltaddlt1le  9028  oddnn02np1  10280