Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

¬(¬q ∨ p) ↔ ((¬¬(r ↔ s) ∧ T) ∨ ¬s)

⇒ logic.propositional.notnot

¬(¬q ∨ p) ↔ (((r ↔ s) ∧ T) ∨ ¬s)

⇒ logic.propositional.defequiv

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