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