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