Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

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