Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

~~(F /\ r) || ~~(q || ~~p) || F

⇒ logic.propositional.notnot

(F /\ r) || ~~(q || ~~p) || F

⇒ logic.propositional.falsezeroand

F || ~~(q || ~~p) || F