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Metamath Proof Explorer

Theorem truorfal

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

		Ref	Expression
	Assertion	truorfal	$⊢ (⊤ \lor ⊥) \leftrightarrow ⊤$

Step	Hyp	Ref	Expression
1		tru	$⊢ ⊤$
2	1	orci	$⊢ (⊤ \lor ⊥)$
3	2	bitru	$⊢ (⊤ \lor ⊥) \leftrightarrow ⊤$