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