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