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