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