Exercise logic.propositional.cnf.unicode
Description
Proposition to CNF (unicode support)
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
¬((¬¬r ↔ r) ∧ ¬¬(T ∧ (r ∨ r)))
⇒ logic.propositional.notnot¬((¬¬r ↔ r) ∧ T ∧ (r ∨ r))
⇒ logic.propositional.idempor¬((¬¬r ↔ r) ∧ T ∧ r)
⇒ logic.propositional.truezeroand¬((¬¬r ↔ r) ∧ r)