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