Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.falsezeroand

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

⇒ logic.propositional.falsezeroor

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

⇒ logic.propositional.notnot

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