This server fosters academic collaboration from different latitudes and geographies

$\overset{o}{\varphi}^{2}=s_{\diamond}+x_{\diamond}\check{\mathbf{e}}_{x}+y_{\diamond}\check{\mathbf{e}}_{y}=s^{2}\left(1-\frac{x^{2}}{s^{2}}\right)\left(1-\frac{y^{2}}{s^{2}}\right)+2sx\left(1-\frac{y^{2}}{s^{2}}\right)\check{\mathbf{e}}_{x}+2sy\left(1-\frac{x^{2}}{s^{2}}\right)\check{\mathbf{e}}_{y}.\label{eq:sca squ fact}$

wiki-luz is intended for the presentation of lectures and problem solving.