Theorem truconj 36259

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

Assertion

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

Proof of Theorem truconj

Step	Hyp	Ref	Expression
1		truan 1550	. 2 ⊢ ((⊤ ∧ 𝜑) ↔ 𝜑)
2	1	bicomi 223	1 ⊢ (𝜑 ↔ (⊤ ∧ 𝜑))

Syntax hints:   ↔ wb 205   ∧ wa 396  ⊤wtru 1540

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This theorem depends on definitions:  df-bi 206  df-an 397  df-tru 1542

This theorem is referenced by: (None)