Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(T ∧ ((r ∨ r) ↔ r)) ∨ ¬r

⇒ logic.propositional.idempor

¬(T ∧ (r ↔ r)) ∨ ¬r