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 ∨ F ∨ (r ∧ s))
⇒ logic.propositional.absorpor¬(q → p) ↔ (¬s ∨ F ∨ (r ∧ s))
⇒ logic.propositional.falsezeroor¬(q → p) ↔ (¬s ∨ (r ∧ s))