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  7442  mulassnqg  7444  prarloc  7563  ltpopr  7655  ltexprlemfl  7669  ltexprlemfu  7671  addasssrg  7816  axaddass  7932  apmul1  8807  ltmul2  8875  lemul2  8876  dvdscmulr  11963  dvdsmulcr  11964  modremain  12070  ndvdsadd  12072  rpexp12i  12293  xblcntrps  14581  xblcntr  14582