Theorem truthtbltort-P4.38a 503

Description: ( T ∨ T ) ⇔ T. †

Assertion

Ref	Expression
truthtbltort-P4.38a	⊢ ((⊤ ∨ ⊤) ↔ ⊤)

Proof of Theorem truthtbltort-P4.38a

Step	Hyp	Ref	Expression
1		idempotor-P4.25b 451	1 ⊢ ((⊤ ∨ ⊤) ↔ ⊤)

Syntax hints:   ↔ wff-bi 104   ∨ wff-or 144  ⊤wff-true 153

This theorem was proved from axioms:  ax-L1 11  ax-L2 12  ax-L3 13  ax-MP 14

This theorem depends on definitions:  df-bi-D2.1 107  df-and-D2.2 133  df-or-D2.3 145  df-true-D2.4 155

This theorem is referenced by: (None)