ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  impac GIF version

Theorem impac 363
Description: Importation with conjunction in consequent. (Contributed by NM, 9-Aug-1994.)
Hypothesis
Ref Expression
impac.1 (𝜑 → (𝜓𝜒))
Assertion
Ref Expression
impac ((𝜑𝜓) → (𝜒𝜓))

Proof of Theorem impac
StepHypRef Expression
1 impac.1 . . 3 (𝜑 → (𝜓𝜒))
21ancrd 309 . 2 (𝜑 → (𝜓 → (𝜒𝜓)))
32imp 115 1 ((𝜑𝜓) → (𝜒𝜓))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 97
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101
This theorem is referenced by:  imdistanri  420  f1elima  5412
  Copyright terms: Public domain W3C validator