Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.falsezeroand

F || q || p

⇒ logic.propositional.falsezeroor

q || p