Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished
¬((q ∧ q) → (p ∨ F)) ↔ ((r ↔ s) ∨ ¬s)
logic.propositional.idempand
¬(q → (p ∨ F)) ↔ ((r ↔ s) ∨ ¬s)