Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.notnot

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