Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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

⇒ logic.propositional.idempand

¬¬¬(p ∨ ¬q) ↔ ((r ↔ s) ∨ ¬s)

⇒ logic.propositional.notnot

¬(p ∨ ¬q) ↔ ((r ↔ s) ∨ ¬s)