Exercise logic.propositional.dnf.unicode
Description
Proposition to DNF (unicode support)
Derivation
![](http://ideas.cs.uu.nl/images/external.png)
¬¬(¬(q → p) ↔ ((r ↔ s) ∨ ((¬s ∨ ¬s) ∧ (¬s ∨ ¬s))))
⇒ logic.propositional.idempand¬¬(¬(q → p) ↔ ((r ↔ s) ∨ ¬s ∨ ¬s))
⇒ logic.propositional.idempor¬¬(¬(q → p) ↔ ((r ↔ s) ∨ ¬s))