Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished
(~q /\ ~((p -> q) || (p -> q))) -> p
logic.propositional.defimpl
(~q /\ ~(~p || q || (p -> q))) -> p
logic.propositional.defimpl
(~q /\ ~(~p || q || ~p || q)) -> p
logic.propositional.idempor
(~q /\ ~(~p || q)) -> p