Theorem false-P3.45 353

Description: '⊥' is refutable. †

Assertion

Ref	Expression
false-P3.45	⊢ ¬ ⊥

Proof of Theorem false-P3.45

Step	Hyp	Ref	Expression
1		rcp-NDASM1of1 192	. 2 ⊢ (⊥ → ⊥)
2	1	ndfalsee-P3.20 185	1 ⊢ ¬ ⊥

Syntax hints:  ¬ wff-neg 9  ⊥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:  dffalse-P3.49-L1  363  truthtblnegf-P4.35b  494