Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

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

⇒ logic.propositional.defimpl

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

⇒ logic.propositional.demorganor

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.truezeroand

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