Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

Final term is not finished

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