Theorem 3adant3r 1237

Description: Deduction adding a conjunct to antecedent. (Contributed by NM, 8-Jan-2006.)

Hypothesis

Ref	Expression
3adant1l.1	|- ( ( ph /\ ps /\ ch ) -> th )

Assertion

Ref	Expression
3adant3r	|- ( ( ph /\ ps /\ ( ch /\ ta ) ) -> th )

Proof of Theorem 3adant3r

Step	Hyp	Ref	Expression
1		3adant1l.1	. . . 4 |- ( ( ph /\ ps /\ ch ) -> th )
2	1	3com13 1210	. . 3 |- ( ( ch /\ ps /\ ph ) -> th )
3	2	3adant1r 1233	. 2 |- ( ( ( ch /\ ta ) /\ ps /\ ph ) -> th )
4	3	3com13 1210	1 |- ( ( ph /\ ps /\ ( ch /\ ta ) ) -> th )

Syntax hints:   -> wi 4   /\ wa 104   /\ w3a 980

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108

This theorem depends on definitions:  df-bi 117  df-3an 982

This theorem is referenced by:  addassnqg  7449  mulassnqg  7451  prarloc  7570  ltpopr  7662  ltexprlemfl  7676  ltexprlemfu  7678  addasssrg  7823  axaddass  7939  apmul1  8815  ltmul2  8883  lemul2  8884  dvdscmulr  11985  dvdsmulcr  11986  modremain  12094  ndvdsadd  12096  rpexp12i  12323  xblcntrps  14649  xblcntr  14650