Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

(¬(q → p) ↔ ((r ↔ s) ∨ ¬s)) ∧ T