Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.idempand

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

⇒ logic.propositional.notnot

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