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