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)