Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

(¬¬q ∧ (¬p ∨ ¬p)) ↔ ¬¬((r ↔ s) ∨ ¬s)

⇒ logic.propositional.idempor

(¬¬q ∧ ¬p) ↔ ¬¬((r ↔ s) ∨ ¬s)