Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

¬(¬(q ∨ q) ∨ ¬¬p) ↔ ¬¬((r ↔ s) ∨ ¬s)

⇒ logic.propositional.idempor

¬(¬q ∨ ¬¬p) ↔ ¬¬((r ↔ s) ∨ ¬s)

⇒ logic.propositional.notnot

¬(¬q ∨ p) ↔ ¬¬((r ↔ s) ∨ ¬s)