Exercise logic.propositional.dnf
Description
Proposition to DNF
Derivation
T /\ (~(q -> r) || r || ~~q)
⇒ logic.propositional.truezeroand~(q -> r) || r || ~~q
⇒ logic.propositional.defimpl~(~q || r) || r || ~~q
⇒ logic.propositional.demorganor(~~q /\ ~r) || r || ~~q
⇒ logic.propositional.notnot(q /\ ~r) || r || ~~q
⇒ logic.propositional.notnot(q /\ ~r) || r || q