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 ∨ (r ↔ s) ∨ ¬s) ∧ (¬¬¬s ∨ (r ↔ s) ∨ ¬s)))
⇒ logic.propositional.notnot¬(q → p) ↔ ((r ↔ s) ∨ ((¬s ∨ (r ↔ s) ∨ ¬s) ∧ (¬s ∨ (r ↔ s) ∨ ¬s)))