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