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Theorem e01 39673
Description: A virtual deduction elimination rule. (Contributed by Alan Sare, 25-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
Hypotheses
Ref Expression
e01.1 𝜑
e01.2 (   𝜓   ▶   𝜒   )
e01.3 (𝜑 → (𝜒𝜃))
Assertion
Ref Expression
e01 (   𝜓   ▶   𝜃   )

Proof of Theorem e01
StepHypRef Expression
1 e01.1 . . 3 𝜑
21vd01 39579 . 2 (   𝜓   ▶   𝜑   )
3 e01.2 . 2 (   𝜓   ▶   𝜒   )
4 e01.3 . 2 (𝜑 → (𝜒𝜃))
52, 3, 4e11 39670 1 (   𝜓   ▶   𝜃   )
Colors of variables: wff setvar class
Syntax hints:  wi 4  (   wvd1 39542
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 199  df-vd1 39543
This theorem is referenced by:  e01an  39674  trsspwALT  39801  sspwtr  39804  pwtrVD  39807  pwtrrVD  39808  snssiALTVD  39810  snelpwrVD  39814  sstrALT2VD  39817  suctrALT2VD  39819  3impexpVD  39839  ax6e2eqVD  39890  ax6e2ndVD  39891  2sb5ndVD  39893  vk15.4jVD  39897
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