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Theorem ex-or 23760
Description: Example for df-or 370. Example by David A. Wheeler. (Contributed by Mario Carneiro, 9-May-2015.)
Assertion
Ref Expression
ex-or  |-  ( 2  =  3  \/  4  =  4 )

Proof of Theorem ex-or
StepHypRef Expression
1 eqid 2451 . 2  |-  4  =  4
21olci 391 1  |-  ( 2  =  3  \/  4  =  4 )
Colors of variables: wff setvar class
Syntax hints:    \/ wo 368    = wceq 1370   2c2 10469   3c3 10470   4c4 10471
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1592  ax-ext 2430
This theorem depends on definitions:  df-bi 185  df-or 370  df-cleq 2443
This theorem is referenced by: (None)
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