Theorem ex-or 27278

Description: Example for df-or 385. 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

Step	Hyp	Ref	Expression
1		eqid 2622	. 2 |- 4 = 4
2	1	olci 406	1 |- ( 2 = 3 \/ 4 = 4 )

Syntax hints:   \/ wo 383   = wceq 1483   2c2 11070   3c3 11071   4c4 11072

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-ext 2602

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-ex 1705  df-cleq 2615

This theorem is referenced by: (None)