Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.absorpand

F || (~p -> q)

⇒ logic.propositional.defimpl

F || ~~p || q

⇒ logic.propositional.falsezeroor

~~p || q

⇒ logic.propositional.notnot

p || q