Heart Surface

$\begin{figure}\begin{center}\BoxedEPSF{Heart.epsf scaled 700}\end{center}\end{figure}$

A heart-shaped surface given by the Sextic Equation

$\begin{displaymath} (2x^2+2y^2+z^2-1)^3-{\textstyle{1\over 10}}x^2z^3-y^2z^3=0. \end{displaymath}$

References