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.truezeroand

¬(q → p) ↔ ((¬¬r ↔ s) ∨ ¬s)