RDP 2015-13: Seasonal Adjustment of Chinese Economic Statistics Equation

\begin{matrix} A O_{t}^{t_{0}} = {\begin{array}{l} 1, t = t_{0} \\ 0, t \neq t_{0} \end{array} \\ L S_{t}^{t_{0}} = {\begin{array}{l} 1, t < t_{0} \\ 0, t \geq t_{0} \end{array} \\ T C_{t}^{t_{0}} = {\begin{array}{l} 1, t < t_{0} \\ α^{t - t_{0}}, t \geq t_{0}, where 0 < α < 1, \end{array} \end{matrix}