Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.truezeroand

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.idempor

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