Theorem bitru

Description: A theorem is equivalent to truth. (Contributed by Mario Carneiro, 9-May-2015)

	Ref	Expression
Hypothesis	bitru.1	⊢ 𝜑
Assertion	bitru	⊢ ( 𝜑 ↔ ⊤ )

Proof

Step	Hyp	Ref	Expression
1		bitru.1	⊢ 𝜑
2		tru	⊢ ⊤
3	1 2	2th	⊢ ( 𝜑 ↔ ⊤ )