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Theorem ex-or 27610
Description: Example for df-or 384. 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 2760 . 2 4 = 4
21olci 405 1 (2 = 3 ∨ 4 = 4)
Colors of variables: wff setvar class
Syntax hints:  wo 382   = wceq 1632  2c2 11282  3c3 11283  4c4 11284
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1988  ax-6 2054  ax-7 2090  ax-9 2148  ax-ext 2740
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-ex 1854  df-cleq 2753
This theorem is referenced by: (None)
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