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