Exercise logic.propositional.dnf.unicode

Description
Proposition to DNF (unicode support)

Derivation

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