Theorem simpl2l 1040

Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012.)

Assertion

Ref	Expression
simpl2l	|- ( ( ( ch /\ ( ph /\ ps ) /\ th ) /\ ta ) -> ph )

Proof of Theorem simpl2l

Step	Hyp	Ref	Expression
1		simp2l 1013	. 2 |- ( ( ch /\ ( ph /\ ps ) /\ th ) -> ph )
2	1	adantr 274	1 |- ( ( ( ch /\ ( ph /\ ps ) /\ th ) /\ ta ) -> ph )

Syntax hints:   -> wi 4   /\ wa 103   /\ w3a 968

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 970

This theorem is referenced by:  xaddass  9805  xrbdtri  11217  pockthg  12287