Equation 10.2.8F5A36978B25B

\begin{equation} \| u\| _{H^1}^2\leq C\bigl (\| \mathrm du\| _{L^2}^2+ \| \mathrm d^*u\| _{L^2}^2+\| u\| _{L^2}^2\bigr ) \end{equation}