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