Theorem 3anim3i 1182

Description: Add two conjuncts to antecedent and consequent. (Contributed by Jeff Hankins, 19-Aug-2009.)

Hypothesis

Ref	Expression
3animi.1	|- ( ph -> ps )

Assertion

Ref	Expression
3anim3i	|- ( ( ch /\ th /\ ph ) -> ( ch /\ th /\ ps ) )

Proof of Theorem 3anim3i

Step	Hyp	Ref	Expression
1		id 19	. 2 |- ( ch -> ch )
2		id 19	. 2 |- ( th -> th )
3		3animi.1	. 2 |- ( ph -> ps )
4	1, 2, 3	3anim123i 1179	1 |- ( ( ch /\ th /\ ph ) -> ( ch /\ th /\ ps ) )

Syntax hints:   -> wi 4   /\ w3a 973

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107

This theorem depends on definitions:  df-bi 116  df-3an 975

This theorem is referenced by:  syl3anl3  1283  syl3anr3  1287  elioo4g  9891