Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.idempand

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

⇒ logic.propositional.falsezeroand

q || p || F

⇒ logic.propositional.falsezeroor

q || p