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Theorem imori 853
Description: Infer disjunction from implication. (Contributed by NM, 12-Mar-2012.)
Hypothesis
Ref Expression
imori.1 (𝜑𝜓)
Assertion
Ref Expression
imori 𝜑𝜓)

Proof of Theorem imori
StepHypRef Expression
1 imori.1 . 2 (𝜑𝜓)
2 imor 852 . 2 ((𝜑𝜓) ↔ (¬ 𝜑𝜓))
31, 2mpbi 229 1 𝜑𝜓)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wo 846
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 206  df-or 847
This theorem is referenced by:  pm2.1  895  pm2.26  938  rb-ax1  1747  fmla0disjsuc  35008  nrmo  35894  meran1  35895  meran2  35896  meran3  35897  tsim3  37605  tsor2  37621  tsor3  37622  spr0nelg  46816
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