Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

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