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) ∧ (r ↔ s)) ∨ ¬s)
⇒ logic.propositional.notnot¬(T ∧ (q → p)) ↔ (((r ↔ s) ∧ (r ↔ s)) ∨ ¬s)
⇒ logic.propositional.defequiv¬(T ∧ (q → p)) ↔ ((((r ∧ s) ∨ (¬r ∧ ¬s)) ∧ (r ↔ s)) ∨ ¬s)