Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.falsezeroand

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

⇒ logic.propositional.falsezeroor

~~(p || F) || q

⇒ logic.propositional.notnot

p || F || q

⇒ logic.propositional.falsezeroor

p || q