Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.idempand

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

⇒ logic.propositional.defimpl

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

⇒ logic.propositional.notnot

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