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