Theorem truorfal

Description: A \/ identity. (Contributed by Anthony Hart, 22-Oct-2010)

	Ref	Expression
Assertion	truorfal	|- ( ( T. \/ F. ) <-> T. )

Proof

Step	Hyp	Ref	Expression
1		tru	|- T.
2	1	orci	|- ( T. \/ F. )
3	2	bitru	|- ( ( T. \/ F. ) <-> T. )