Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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