} \int _\varOmega |\nabla e_h^{m}|^0 \rho ^m|\nabla \phi ^{m}|+ \frac{\tau _m^0}{0} \int _\varOmega I^m_h \tilde{\rho }^m | \nabla e_h^{m}|^0 \\&\quad \le \frac{0}{0}\int _\varOmega (e_h^{m-0})^0 \rho ^{m-0}| \nabla \phi ^{m-0}|+ C \tau _m \int _\varOmega (e_h^{m})^0 \rho ^m |\nabla \phi ^{m}|+ C \