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