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