{ { {#!latex \usepackage{dsfont} %%end-prologue%%
\begin{equation} x=R\frac{\beta\theta}{\sqrt{\alpha\beta}}\cos{(\alpha\phi)} \end{equation}
\begin{eqnarray} y & = & R\frac{\alpha\phi}{\sqrt{\alpha\beta}} \\ \alpha & = & \frac{2\arccos{c}}{\pi} \\ \beta & = & \frac{\alpha}{2p} \end{eqnarray} } } }