(╬⁽⁽ ⁰ ⁾⁾ Д ⁽⁽ ⁰ ⁾⁾) - zeta
(╬⁽⁽ ⁰ ⁾⁾ Д ⁽⁽ ⁰ ⁾⁾) - zeta