% One needs PDF2SVG to generate the SVG graph.
% Author: Ika
% Update Date: 11/18/2014

\documentclass{amsart}
\usepackage[paperwidth=200px, paperheight=100px, top=-12px, left=0px, right=0px, bottom=0px]{geometry}
\usepackage{amsmath,amssymb,nopageno}
\usepackage[all]{xy}
\begin{document}
\Huge
\[
	\xymatrix@C+1em@R+1em{ 
	S \times S \times S \ar^(0.58){* \times 1}[r] \ar_{1 \times *}[d] & S \times S \ar^{*}[d]\\
	S \times S \ar^(0.58){*}[r] & S
	}
\]
\end{document}