article.tex

   1 \documentclass[a4paper]{article}
   2 \usepackage{MnSymbol}
   3 \usepackage{stmaryrd}
   4 \usepackage{slashed}
   5 \begin{document}
   6 \def\iwjtest{{/\mkern-9mu\Sqsupset}}
   7 \newcommand{\iwjtestx}{\mathrel{\ooalign{$\Sqsubset$ $\sslash$}}}
   8 \newcommand{\iwjtesty}{{%
   9   \declareslashed{}{\sslash}{-0.04}{0}{\Sqsubset}\slashed{\Sqsubset}}}
  10 sponge
  11 $ A \sqsubseteq B $
  12 $ A \not \sqsubseteq B $
  13 $ A \nsqsubseteq B $
  14 $ A \Sqsubset B $
  15 $ A \Sqsupset B $
  16 $ \sslash $
  17 $ \iwjtest $
  18 $ \iwjtestx $
  19 $ \iwjtesty $
  20 $ A \iwjtesty B $
  21 \end{document}