MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  ex-or Structured version   Visualization version   GIF version

Theorem ex-or 26438
Description: Example for df-or 383. 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 2514 . 2 4 = 4
21olci 404 1 (2 = 3 ∨ 4 = 4)
Colors of variables: wff setvar class
Syntax hints:  wo 381   = wceq 1474  2c2 10823  3c3 10824  4c4 10825
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1700  ax-ext 2494
This theorem depends on definitions:  df-bi 195  df-or 383  df-cleq 2507
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator