Theorem falorfal

Description: A \/ identity. (Contributed by Anthony Hart, 22-Oct-2010) (Proof shortened by Andrew Salmon, 13-May-2011)

	Ref	Expression
Assertion	falorfal	⊢ ( ( ⊥ ∨ ⊥ ) ↔ ⊥ )

Proof

Step	Hyp	Ref	Expression
1		oridm	⊢ ( ( ⊥ ∨ ⊥ ) ↔ ⊥ )