Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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

⇒ logic.propositional.notnot

(¬((q → p) ∧ T) ↔ ((r ↔ s) ∨ ¬s)) ∨ F