%% %% Der Mathematiksatz mit LaTeX, 1. Auflage 2009 %% %% Example 10-5-1 on page 220. %% %% Copyright (C) 2009 Herbert Voss %% %% It may be distributed and/or modified under the conditions %% of the LaTeX Project Public License, either version 1.3 %% of this license or (at your option) any later version. %% %% See http://www.latex-project.org/lppl.txt for details. %% \documentclass[]{ttctminimal} \pagestyle{empty} \setcounter{page}{6} \setlength\textwidth{355.65944pt} \AtBeginDocument{\setlength\parindent{0pt}} \StartShownPreambleCommands \usepackage{eucal,amsmath,esint} \newcommand*\Q[2]{\frac{\partial#1}{\partial#2}} \StopShownPreambleCommands \begin{document} The \emph{first theorem of Green} is: $\underset{\mathcal{G}\quad}\iiint\!\left[u\nabla^{2}v+\left(\nabla u, \nabla v\right)\right]d^{3}V=\underset{\mathcal{S}\quad}\oiint u\Q{v}{n}d^{2}A$ The \emph{second theorem of Green} is: $\underset{{\mathcal{G}\quad}}\iiint\!\left[u\nabla^{2}v-v\nabla^{2}u\right]d^{3}V =\underset{\mathcal{S}\quad}\oiint\left(u\Q{v}{n}-v\Q{u}{n}\right)d^{2}A$ \end{document}