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