Theorem truanfal 1392

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

Assertion

Ref	Expression
truanfal	⊢ ((⊤ ∧ ⊥) ↔ ⊥)

Proof of Theorem truanfal

Step	Hyp	Ref	Expression
1		truan 1360	1 ⊢ ((⊤ ∧ ⊥) ↔ ⊥)

Syntax hints:   ∧ wa 103   ↔ wb 104  ⊤wtru 1344  ⊥wfal 1348

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107

This theorem depends on definitions:  df-bi 116  df-tru 1346

This theorem is referenced by: (None)