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Theorem orim1i 503
Description: Introduce disjunct to both sides of an implication. (Contributed by NM, 6-Jun-1994.)
Hypothesis
Ref Expression
orim1i.1
Assertion
Ref Expression
orim1i

Proof of Theorem orim1i
StepHypRef Expression
1 orim1i.1 . 2
2 id 19 . 2
31, 2orim12i 502 1
Colors of variables: wff setvar class
Syntax hints:   wi 4   wo 357
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 177  df-or 359
This theorem is referenced by:  19.34  1663  r19.45av  2768  leconnnc  6218
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