%%
%% Der LaTeX-Begleiter, zweite Auflage (September 2005)
%%
%% Beispiel 8-5-3 von Seite 510.
%%
%% Copyright (C) 2005 Frank Mittelbach, Michel Goossens,
%% Johannes Braams, David Carlisle, and Chris Rowley
%%
%% Uebersetzung: Copyright (C) 2005 Claudia Krysztofiak,
%% Rebecca Stiels und Frank Mittelbach
%%
%% 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{lb2exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{173.4372pt}
\StartShownPreambleCommands
\usepackage{amsmath}
\StopShownPreambleCommands
\begin{document}
\begin{align*}
\widehat {\psi_\delta(t) E_t h}
&= \widetilde {\psi_\delta(t) E_t h} \\
\overline {\psi_\delta(t) E_t h}
&= \underline {\psi_\delta(t) E_t h} \\
\intertext{�ndern sich nicht bei Stilwechsel:}
\overbrace {\psi_\delta(t) E_t h}
&= \underbrace {\psi_\delta(t) E_t h} \\
\intertext{Ben�tigen \textsf{amsmath} f�r
Stilwechsel:}
\overrightarrow {\psi_\delta(t) E_t h}
&= \overleftarrow {\psi_\delta(t) E_t h} \\
\intertext{Ben�tigen \textsf{amsmath}:}
\underrightarrow {\psi_\delta(t) E_t h}
&= \underleftarrow {\psi_\delta(t) E_t h} \\
\overleftrightarrow {\psi_\delta(t) E_t h}
&=\underleftrightarrow{\psi_\delta(t) E_t h}
\end{align*}
\end{document}
