Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.demorganor

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

⇒ logic.propositional.notnot

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