Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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