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Theorem sylbird 226
Description: A syllogism deduction. (Contributed by NM, 3-Aug-1994.)
Hypotheses
Ref Expression
sylbird.1
sylbird.2
Assertion
Ref Expression
sylbird

Proof of Theorem sylbird
StepHypRef Expression
1 sylbird.1 . . 3
21biimprd 214 . 2
3 sylbird.2 . 2
42, 3syld 40 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:  3imtr3d  258  eqreu  3028  sfinltfin  4535  ov3  5599  erref  5959  enmap2lem3  6065  nenpw1pwlem2  6085  tlecg  6230  ce2le  6233  addcdi  6250  nchoicelem9  6297
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