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Theorem syl3an3 1308
Description: A syllogism inference. (Contributed by NM, 22-Aug-1995.)
Hypotheses
Ref Expression
syl3an3.1 (𝜑𝜃)
syl3an3.2 ((𝜓𝜒𝜃) → 𝜏)
Assertion
Ref Expression
syl3an3 ((𝜓𝜒𝜑) → 𝜏)

Proof of Theorem syl3an3
StepHypRef Expression
1 syl3an3.1 . . 3 (𝜑𝜃)
2 syl3an3.2 . . . 4 ((𝜓𝜒𝜃) → 𝜏)
323exp 1228 . . 3 (𝜓 → (𝜒 → (𝜃𝜏)))
41, 3syl7 69 . 2 (𝜓 → (𝜒 → (𝜑𝜏)))
543imp 1219 1 ((𝜓𝜒𝜑) → 𝜏)
Colors of variables: wff set class
Syntax hints:  wi 4  w3a 1004
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 1006
This theorem is referenced by:  syl3an3b  1311  syl3an3br  1314  vtoclgft  2854  ovmpox  6150  ovmpoga  6151  nnanq0  7678  apreim  8783  apsub1  8822  divassap  8870  ltmul2  9036  xleadd1  10110  xltadd2  10112  elfzo  10384  fzodcel  10388  subcn2  11889  mulcn2  11890  ndvdsp1  12511  gcddiv  12608  lcmneg  12664  mulgaddcom  13751  lspsnss  14437  rnglidlrng  14531  neipsm  14897  opnneip  14902  hmeof1o2  15051  blcntrps  15158  blcntr  15159  neibl  15234  blnei  15235  metss  15237  rpcxpsub  15651  cxpcom  15681  rplogbzexp  15697  konigsbergssiedgwpren  16355
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