Metamath Proof Explorer

Theorem falortru

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

Ref Expression
Assertion falortru ⊢ ⊥ ∨ ⊤ ↔ ⊤

Proof

Step Hyp Ref Expression
1 tru ⊢ ⊤
2 1 olci ⊢ ⊥ ∨ ⊤
3 2 bitru ⊢ ⊥ ∨ ⊤ ↔ ⊤