Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

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