Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

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