Theorem impl 380

Description: Export a wff from a left conjunct. (Contributed by Mario Carneiro, 9-Jul-2014.)

Hypothesis

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

Assertion

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

Proof of Theorem impl

Step	Hyp	Ref	Expression
1		impl.1	. . 3 |- ( ph -> ( ( ps /\ ch ) -> th ) )
2	1	expd 258	. 2 |- ( ph -> ( ps -> ( ch -> th ) ) )
3	2	imp31 256	1 |- ( ( ( ph /\ ps ) /\ ch ) -> th )

This proof depends on syntax axioms:   -> wi 4   /\ wa 104

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108

This theorem is used by:  sbc2iedv  3124  csbie2t  3196  foco2  5962  erth  6857  distrlem1prl  7955  distrlem1pru  7956  uz11  9961  elpq  10066  divgcdcoprm0  12904  cncongr1  12906  prmpwdvds  13163  ballotfilemimin  13307  issgrpd  13786  dfgrp3mlem  13962  efltlemlt  16000  clwwlkext2edg  16868