Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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