Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

¬¬(¬(q → p) ↔ (T ∧ ((r ↔ s) ∨ ¬s)))