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Theorem 3adantr3 1100
Description: Deduction adding a conjunct to antecedent. (Contributed by NM, 27-Apr-2005.)
Hypothesis
Ref Expression
3adantr.1  |-  ( (
ph  /\  ( ps  /\ 
ch ) )  ->  th )
Assertion
Ref Expression
3adantr3  |-  ( (
ph  /\  ( ps  /\ 
ch  /\  ta )
)  ->  th )

Proof of Theorem 3adantr3
StepHypRef Expression
1 3simpa 936 . 2  |-  ( ( ps  /\  ch  /\  ta )  ->  ( ps 
/\  ch ) )
2 3adantr.1 . 2  |-  ( (
ph  /\  ( ps  /\ 
ch ) )  ->  th )
31, 2sylan2 280 1  |-  ( (
ph  /\  ( ps  /\ 
ch  /\  ta )
)  ->  th )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 102    /\ w3a 920
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106
This theorem depends on definitions:  df-bi 115  df-3an 922
This theorem is referenced by:  3ad2antr1  1104  3ad2antr2  1105  3adant3r3  1150  isosolem  5514  caovlem2d  5744
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