Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.truezeroand

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