Theorem truthtblforf-P4.38d 506

Description: ( F ∨ F ) ⇔ F. †

Assertion

Ref	Expression
truthtblforf-P4.38d	⊢ ((⊥ ∨ ⊥) ↔ ⊥)

Proof of Theorem truthtblforf-P4.38d

Step	Hyp	Ref	Expression
1		idorfalsel-P4.20a 440	1 ⊢ ((⊥ ∨ ⊥) ↔ ⊥)

Syntax hints:   ↔ wff-bi 104   ∨ wff-or 144  ⊥wff-false 157

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  df-false-D2.5 158

This theorem is referenced by: (None)