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