Theorem falantru

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

	Ref	Expression
Assertion	falantru	⊢ ( ( ⊥ ∧ ⊤ ) ↔ ⊥ )

Proof

Step	Hyp	Ref	Expression
1		fal	⊢ ¬ ⊥
2	1	intnanr	⊢ ¬ ( ⊥ ∧ ⊤ )
3	2	bifal	⊢ ( ( ⊥ ∧ ⊤ ) ↔ ⊥ )