Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.defimpl

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.notnot

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