Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.defimpl

~p || q || p || ~~q

⇒ logic.propositional.notnot

~p || q || p || q