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