$ {{{K}}_i} = \left[ {\begin{array}{*{20}{c}} {{u_{1,i}}}&{{u_{M + 1,i}}}& \cdots &{{u_{(N - 1)M + 1,i}}}\\ {{u_{_{2,i}}}}&{{u_{M + 2,i}}}& \cdots &{{u_{(N - 1)M + 2,i}}}\\ \vdots & \vdots & \ddots & \vdots \\ {{u_{M,i}}}&{{u_{2M,i}}}& \cdots &{{u_{MN,i}}} \end{array}} \right],i = 1,2, \cdot \cdot \cdot ,p $ ![]() ![]() | (8) |