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