Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished
~~((q || p) /\ ~q) /\ (q || (~~~r /\ ~~~r /\ ~~~r /\ ~~~r))
logic.propositional.idempand
~~((q || p) /\ ~q) /\ (q || (~~~r /\ ~~~r))
logic.propositional.idempand
~~((q || p) /\ ~q) /\ (q || ~~~r)
logic.propositional.notnot
~~((q || p) /\ ~q) /\ (q || ~r)