Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

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

⇒ logic.propositional.demorganand

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

⇒ logic.propositional.notnot

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