Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.notnot

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

⇒ logic.propositional.defimpl

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