Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.falsezeroor

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

⇒ logic.propositional.absorpand

q || ~~p

⇒ logic.propositional.notnot

q || p