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