Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.defequiv

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

⇒ logic.propositional.defequiv

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

⇒ logic.propositional.idempor

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