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