Exercise logic.propositional.dnf.unicode
Description
Proposition to DNF (unicode support)
Derivation
Final term is not finished(¬(¬¬q → p) ∧ ¬(¬¬q → p)) ↔ ((r ↔ s) ∨ ¬(s ∧ s))
⇒ logic.propositional.idempand(¬(¬¬q → p) ∧ ¬(¬¬q → p)) ↔ ((r ↔ s) ∨ ¬s)