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