\documentclass{book}
\usepackage{amssymb}
\usepackage{ptext}
\usepackage{xepersian}
\settextfont{Yas}
\DeclareRobustCommand\test{$sp(2k, \mathbb{C})$}
\DeclareRobustCommand\test{$ad=t$}
\begin{document}
\chapter{test}
\section{\test}
.
\newpage
.
\newpage
.
\end{document}