Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

¬(q → ((p ∨ p) ∧ (p ∨ p))) ↔ ((r ↔ s) ∨ ¬(s ∧ s))

⇒ logic.propositional.idempand

¬(q → ((p ∨ p) ∧ (p ∨ p))) ↔ ((r ↔ s) ∨ ¬s)