Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

q || ~~~~(p -> q) || p

⇒ logic.propositional.notnot

q || ~~(p -> q) || p

⇒ logic.propositional.defimpl

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

⇒ logic.propositional.demorganor

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

⇒ logic.propositional.notnot

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