Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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

⇒ logic.propositional.idempor

¬¬¬(¬q ∨ p) ↔ ((r ↔ s) ∨ ¬s)

⇒ logic.propositional.notnot

¬(¬q ∨ p) ↔ ((r ↔ s) ∨ ¬s)