Theorem truantru 1602

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

Assertion

Ref	Expression
truantru	⊢ ((⊤ ∧ ⊤) ↔ ⊤)

Proof of Theorem truantru

Step	Hyp	Ref	Expression
1		anidm 574	1 ⊢ ((⊤ ∧ ⊤) ↔ ⊤)

This proof depends on syntax axioms:   ↔ wb 209   ∧ wa 400  ⊤wtru 1570

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This proof depends on definitions:  df-bi 210  df-an 401

This theorem is used by: (None)