%% An UIT Edition example

%%
%% An UIT Edition example
%%
%% Example 04-04-3 on page 37.
%%
%% Copyright (C) 2010 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.
%%
%%
%% ====
% Show page(s) 1
%%
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{177.70511pt}
\AtBeginDocument{\setlength\parindent{0pt}}
\setcounter{equation}{6}
\renewcommand\theequation{4.\arabic{equation}}
\StartShownPreambleCommands

\StopShownPreambleCommands
\begin{document}
\begin{equation}
\fboxsep=0pt\fboxrule=0.1pt
\fbox{$\sum_{{1\le i\le \sqrt{p^{-3}}\atop{
{1\le j\le q\atop 1\le k\le r}}}}$}
\fbox{$a_{ij}b_{jk}c_{ki}$}
\end{equation}
\end{document}