%% 
%%  Ein Beispiel der DANTE-Edition
%%  Mathematiksatz mit LaTeX
%%  3. Auflage
%%  Beispiel 07-05-3 auf Seite 143.
%%  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]{examinimal-mathsymbols}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\AtBeginDocument{\setlength\parindent{0pt}}
%StartShownPreambleCommands
\usepackage{array,stmaryrd}
%StopShownPreambleCommands
\begin{document}
\renewcommand\arraystretch{1.1}
\begin{tabular}{@{}*{2}{r@{\kern3pt}l}r@{\kern3pt}l@{}l@{}}
\mathsymbol{inplus}
\mathsymbol{niplus}
\mathsymbol{ntrianglelefteqslant}\\
\mathsymbol{ntrianglerighteqslant}
\mathsymbol{subsetplus}
\mathsymbol{subsetpluseq}\\
\mathsymbol{supsetplus}
\mathsymbol{supsetpluseq}
\mathsymbol{trianglelefteqslant}\\
\mathsymbol{trianglerighteqslant}
\end{tabular}
\end{document}