Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

¬(¬¬(q → p) ∨ F) ↔ ((r ↔ s) ∨ F ∨ ¬s)

⇒ logic.propositional.notnot

¬((q → p) ∨ F) ↔ ((r ↔ s) ∨ F ∨ ¬s)

⇒ logic.propositional.defimpl

¬(¬q ∨ p ∨ F) ↔ ((r ↔ s) ∨ F ∨ ¬s)