Proof of proveit.logic.booleans.disjunction.false_or_false_negated theorem

import proveit
from proveit.logic.booleans.disjunction  import or_f_f
theory = proveit.Theory() # the theorem's theory

%proving false_or_false_negated

With these allowed/disallowed theorem/theory presumptions (e.g., to avoid circular dependencies), we begin our proof of
false_or_false_negated:
(see dependencies)

false_or_false_negated has been proven.  Now simply execute "%qed".

%qed

proveit.logic.booleans.disjunction.false_or_false_negated has been proven.

	step type	requirements	statement
0	instantiation	1, 2	⊢
	:
1	theorem		⊢
	proveit.logic.booleans.negation.negation_intro
2	axiom		⊢
	proveit.logic.booleans.disjunction.or_f_f