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