Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.falsezeroand

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

⇒ logic.propositional.falsezeroor

(~p -> F) || q

⇒ logic.propositional.defimpl

~~p || F || q

⇒ logic.propositional.falsezeroor

~~p || q

⇒ logic.propositional.notnot

p || q