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.demorganand

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.defimpl

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