Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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

⇒ logic.propositional.defequiv

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