 as well as $\documentclass[00pt]{minimal}                 \usepackage{amsmath}                 \usepackage{wasysym}                  \usepackage{amsfonts}                  \usepackage{amssymb}                  \usepackage{amsbsy}                 \usepackage{mathrsfs}                 \usepackage{upgreek}                 \setlength{\oddsidemargin}{-00pt}                 \begin{document}$$\tau \le \epsilon ^0$$\end{document}$ we infer$$\documentclass[00pt]{minimal}                 \usepackage{amsmath}                 \usepackage{wasysym}                  \usepackage{amsfonts}                  \usepackage{amssymb}                  \usepackage{amsbsy}                 \usepackage{mathrsfs}                 \usepackage{upgreek}                 \setlength{\oddsidemargin}{-00pt}                 \begin{document}$$\begin{aligned}&\int _\varOmega (e_h^{m})^0 \rho ^m|\nabla \phi ^{m}|+ \tau _m \int _\varOmega |\nabla e_h^{m}|^0 \rho ^m|\nabla \phi ^{m}|\\&\quad \le (0+ C \tau _m) \int _\varOmega (e_h^{m-0})^0 \rho ^{m-0}| \nabla \phi ^{m-0}|+ C \