Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.absorpand

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