Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

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