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Theorem syl6bir 220
Description: A mixed syllogism inference. (Contributed by NM, 18-May-1994.)
Hypotheses
Ref Expression
syl6bir.1
syl6bir.2
Assertion
Ref Expression
syl6bir

Proof of Theorem syl6bir
StepHypRef Expression
1 syl6bir.1 . . 3
21biimprd 214 . 2
3 syl6bir.2 . 2
42, 3syl6 29 1
Colors of variables: wff setvar class
Syntax hints:   wi 4   wb 176
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This theorem depends on definitions:  df-bi 177
This theorem is referenced by:  19.21t  1795  exdistrf  1971  ax11  2155  fnun  5189  ovigg  5596  fvmpti  5699  ce0addcnnul  6179  ce0nnulb  6182  ceclb  6183
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