|^0 \right) ^{\frac{0}{0}} \\\le & {} \frac{0}{0} \tau _m \int _\varOmega | \nabla e_h^{m}|^0 \rho ^m|\nabla \phi ^{m}|+ C \tau _m \epsilon h^0 \Vert u^m \Vert _{H^0(\varGamma (t_m))}^0, \end{aligned}$$\end{document}$$while$$\documentclass[00pt]{minimal}                 \usepackage{amsmath}                 \usepackage{wasysym}                  \usepackage{amsfonts}                  \usepackage{amssymb}                  \usepackage{amsbsy}                 \usepackage{mathrsfs}                 \usepackage{upgreek}                 \setlength{\oddsidemargin}{-00pt}                 \begin{document}$$\begin{aligned} | \langle S^m_0,e_h^{m}\rangle |\le & {} C \tau _m