Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

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

⇒ logic.propositional.idempor

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

⇒ logic.propositional.notnot

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