Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬(T ∧ ((r ∧ ¬¬r) ∨ (¬r ∧ ¬r)) ∧ r)

⇒ logic.propositional.notnot

¬(T ∧ ((r ∧ r) ∨ (¬r ∧ ¬r)) ∧ r)