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