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