Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.absorpor

p || F || q

⇒ logic.propositional.falsezeroor

p || q