%%
%% Ein Beispiel der DANTE-Edition
%% Mathematiksatz mit LaTeX
%% 3. Auflage
%% Beispiel 04-18-6 auf Seite 71.
%% Copyright (C) 2018 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[10pt]{screxa}
\pagestyle{empty}
\setlength\textwidth{122.40707pt}
\AtBeginDocument{\setlength\parindent{0pt}}
%StartShownPreambleCommands
%StopShownPreambleCommands
\begin{document}
\[ \sum_{%
\makebox[0pt]{${{\scriptscriptstyle 1\le j\le p\atop {%
{1\le j\le q\atop 1\le k\le r}}}}%
$}}a_{ij}\mathbf{b_{jk}}c_{ki}
\]
\end{document}
