\documentclass[11pt,fleqn]{book}
\usepackage[framemethod=TikZ]{mdframed}
\usepackage{nashrbook}
\usepackage{multicol}
\usepackage{amssymb,amsmath,amsthm} 
\usepackage{amsfonts}
\usepackage{cancel}
\usepackage{bidipoem}
\usepackage{tkz-tab}
\usepackage{graphicx}
\usepackage{caption}
\usepackage{pstricks,pstricks-add,pst-3dplot,pst-coil,pst-func}
\usepackage{indentfirst}
\usepackage{marginnote}
\usepackage{xcolor}
\usepackage{subfigure}
\usepackage{gensymb}
\usepackage{wrapfig}