Theorem truthtblnegf-P4.35b 494

Description: ¬ F ⇔ T. †

Assertion

Ref	Expression
truthtblnegf-P4.35b	⊢ (¬ ⊥ ↔ ⊤)

Proof of Theorem truthtblnegf-P4.35b

Step	Hyp	Ref	Expression
1		false-P3.45 353	. 2 ⊢ ¬ ⊥
2	1	thmeqtrue-P4.21a 442	1 ⊢ (¬ ⊥ ↔ ⊤)

Syntax hints:  ¬ wff-neg 9   ↔ wff-bi 104  ⊤wff-true 153  ⊥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-true-D2.4 155  df-false-D2.5 158

This theorem is referenced by: (None)