Exercise logic.propositional.dnf
Description
Proposition to DNF
Derivation
Final term is not finished
(p || q) /\ (~~((r || r) /\ r) <-> p)
⇒ logic.propositional.notnot(p || q) /\ (((r || r) /\ r) <-> p)
⇒ logic.propositional.absorpand(p || q) /\ (r <-> p)