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\documentclass[12pt, openany]{book}
\usepackage{supertabular} 
\usepackage{amsthm,amssymb,amsmath,mathabx,epsfig,amsfonts,amscd,mathrsfs,enumerate,latexsym} 
\usepackage{geometry}\geometry{left=30mm,right=30mm, top=35mm,bottom=18mm}
\usepackage{multicol,acronym}
\usepackage{xepersian}
\renewcommand{\baselinestretch}{1.7}
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\setdigitfont[Scale=1.2]{ParsiDigits}
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\settextfont[Scale=1.3]{B Lotus}
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\begin{document} 

\فصل*{پیشگفتار}
\addcontentsline{toc}{part}{پیشگفتار}
\defpersianfont\Titr[Scale=1]{B Titr} 
\begin{Titr}\it\small{
این کتاب با نام 

\centerline{
 Real Analysis and measure theory}
}
\end{Titr}
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\فصل*{فهرست واژه‌ها}
\renewcommand{\chaptermark}[1]{\markboth{\MakeUppercase{\ #1}}{\MakeUppercase{\ #1}}}
\addcontentsline{toc}{chapter}{فهرست واژه‌ها}
\chaptermark{فهرست واژه‌ها} 

\begin{multicols}{2}
اثبات
\hfill proof

اثر 
\hfill trace

احتمال
\hfill probability
\end{multicols}
\end{document}