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