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