Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.absorpand

F || ~~p || ~~q

⇒ logic.propositional.falsezeroor

~~p || ~~q

⇒ logic.propositional.notnot

p || ~~q

⇒ logic.propositional.notnot

p || q