Coming soon

\[e^{i \pi} = -1\] \[\begin{bmatrix} 1 & \rho(x_2,x_1) & \cdots & \rho(x_1,x_n)\\ \rho(x_2,x_1) & 1 & \cdots & \rho(x_2, x_n)\\ \vdots & \vdots & \ddots & \vdots \\ \rho(x_m,x_1) & \rho(x_m,x_2) & \cdots & 1 \\ \end{bmatrix}\]