Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

¬¬(¬((¬(q ∧ q) ∨ p) ∧ (¬q ∨ p)) ↔ ((r ↔ s) ∨ (r ↔ s) ∨ ¬s))

⇒ logic.propositional.idempand

¬¬(¬((¬q ∨ p) ∧ (¬q ∨ p)) ↔ ((r ↔ s) ∨ (r ↔ s) ∨ ¬s))