Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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

⇒ logic.propositional.notnot

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