Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

¬(q → p) ↔ (T ∧ ((r ↔ s) ∨ ¬¬¬s))

⇒ logic.propositional.notnot

¬(q → p) ↔ (T ∧ ((r ↔ s) ∨ ¬s))