Exercise logic.propositional.dnf
Description
Proposition to DNF
Derivation
(T /\ q) || (T /\ r) || (T /\ ~(~q || (r /\ r)))
⇒ logic.propositional.truezeroandq || (T /\ r) || (T /\ ~(~q || (r /\ r)))
⇒ logic.propositional.truezeroandq || r || (T /\ ~(~q || (r /\ r)))
⇒ logic.propositional.truezeroandq || r || ~(~q || (r /\ r))
⇒ logic.propositional.idempandq || r || ~(~q || r)
⇒ logic.propositional.demorganorq || r || (~~q /\ ~r)
⇒ logic.propositional.notnotq || r || (q /\ ~r)