Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

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