% !TEX TS-program = XeLaTeX
% Commands for running this example:
% 	 xelatex color-math2
% End of Commands
\documentclass{article}
\pagestyle{empty}
\usepackage{color,amscd,amsmath}
\usepackage[all]{xy }
\usepackage{xepersian}
\settextfont{Persian Modern}
\begin{document}

\begin{displaymath}
\xymatrix{
E \ar[rd] |{\varepsilon} \ar[r]^{u} & C \ar[d]^{\partial} \ar @{->} @< 2pt> [r]^{f} \ar @{ ->} @<-2pt> [r]_{g} & D \ar[dl]^{\partial'}\\
E' \ar[u]^{\gamma} \ar[ur] |{u'} \ar[r]_{\varepsilon'}& P}
\end{displaymath}
یا به طور ساده تر دیاگرام
\begin{displaymath}
\xymatrix{
(E,\varepsilon) \ar[r]^{u} & (C,\partial)\ar @{->} @< 2pt> [r]^{f} \ar @{ ->} @<-2pt> [r]_{g} & (D,\partial')\\
(E',\varepsilon') \ar[u]^{\gamma} \ar[ur]_{u'} }
\end{displaymath}
\end{document}