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