Exercise logic.propositional.cnf.unicode

Description
Proposition to CNF (unicode support)

Derivation

Final term is not finished

¬((¬¬r ↔ r) ∧ T ∧ (¬¬r ∨ r))

⇒ logic.propositional.notnot

¬((¬¬r ↔ r) ∧ T ∧ (r ∨ r))