Theorem truconj

Description: Add true as a conjunct. (Contributed by Giovanni Mascellani, 23-May-2019)

	Ref	Expression
Assertion	truconj	⊢ ( 𝜑 ↔ ( ⊤ ∧ 𝜑 ) )

Proof

Step	Hyp	Ref	Expression
1		truan	⊢ ( ( ⊤ ∧ 𝜑 ) ↔ 𝜑 )
2	1	bicomi	⊢ ( 𝜑 ↔ ( ⊤ ∧ 𝜑 ) )