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Theorem orimdi 847
Description: Disjunction distributes over implication. (Contributed by Wolf Lammen, 5-Jan-2013.)
Assertion
Ref Expression
orimdi

Proof of Theorem orimdi
StepHypRef Expression
1 imdi 363 . 2
2 df-or 370 . 2
3 df-or 370 . . 3
4 df-or 370 . . 3
53, 4imbi12i 326 . 2
61, 2, 53bitr4i 277 1
Colors of variables: wff setvar class
Syntax hints:  -.wn 3  ->wi 4  <->wb 184  \/wo 368
This theorem is referenced by:  pm2.76  848  pm2.85  853
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 185  df-or 370
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