Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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

⇒ logic.propositional.defimpl

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

⇒ logic.propositional.falsezeroor

¬(¬¬(¬q ∨ p) ∨ F) ↔ ((r ↔ s) ∨ ¬s)