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))