Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.absorpand

F || q || p

⇒ logic.propositional.falsezeroor

q || p