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.idempor

¬((q → p) ∨ (q → p)) ↔ ((r ↔ s) ∨ ¬s)