Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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