Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

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