Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.idempand

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

⇒ logic.propositional.idempand

~(q -> r) || q || r

⇒ logic.propositional.defimpl

~(~q || r) || q || r

⇒ logic.propositional.demorganor

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

⇒ logic.propositional.notnot

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