Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.defimpl

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.absorpand

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

⇒ logic.propositional.falsezeroand

F || ~~p || q

⇒ logic.propositional.falsezeroor

~~p || q

⇒ logic.propositional.notnot

p || q