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