Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

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