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