# Latex “element of with two strokes” (⋹)

Is there a latex symbol akin to \in, but with two strokes? It has a Unicode equivalent, ⋹. I looked on detexify, but I couldn't find anything that matched. If it doesn't exist, how might I "rig" it?

## Edit

The solutions posted do work, but I also now find the need to have a MathJax version of the symbol. I am not sure as to how to include the solutions given in a MathJax define key; using the usual "macros" produces an error.

## Enlarged image

• You mean the Euro symbol? – cfr Aug 17 '15 at 1:41
• @cfr No, it does look like the Euro symbol, but it is specifically an element membership symbol with two strokes down the center. – Conor O'Brien Aug 17 '15 at 1:46
• How very confusing. I see now that it is not quite the same but it really looks like it without a magnifying glass! – cfr Aug 17 '15 at 1:47
• @cfr, Haha, right! I added a larger picture for those of who are without magnifying glasses. – Conor O'Brien Aug 17 '15 at 1:49
• For MathJax, why not just use the Unicode character directly? – Ilmari Karonen Aug 17 '15 at 19:45

Here's one option using \ooalign:

\documentclass{article}
\usepackage{graphicx}
\usepackage{amsmath}

\newcommand\Inn{%
\mathrel{\ooalign{$\subset$\cr\hfil\scalebox{0.8}[1]{$=$}\hfil\cr}}%
}
\begin{document}

$A\in B$

$A\Inn B$

\end{document}


The result:

And if you need it for the different math styles:

\documentclass{article}
\usepackage{graphicx}
\usepackage{amsmath}

\newcommand\Inn{%
\mathrel{\mathchoice
{\ooalign{$\displaystyle\subset$\cr\hfil\scalebox{0.8}[1]{$=$}\hfil\cr}}%
{\ooalign{$\textstyle\subset$\cr\hfil\scalebox{0.8}[1]{$\textstyle=$}\hfil\cr}}%
{\ooalign{$\scriptstyle\subset$\cr\hfil\scalebox{0.8}[1]{$\scriptstyle=$}\hfil\cr}}%
{\ooalign{$\scriptscriptstyle\subset$\cr\hfil\scalebox{0.8}[1]{$\scriptscriptstyle=$}\hfil\cr}}%
}%
}

\begin{document}

$A\in B\quad{\textstyle A\in B}\quad L_{A\in B}\quad M_{L_{A\in B}}$

$A\Inn B\quad{\textstyle A\Inn B}\quad L_{A\Inn B}\quad M_{L_{A\Inn B}}$

\end{document}


It's Unicode symbol U+22F9 "Element of with two horizontal strokes": ⋹.

When LuaTeX or XeTeX is used, then the symbol is available with the following fonts:

• Asana Math

\documentclass{article}
\usepackage{unicode-math}
\setmathfont{Asana-Math.otf}

\begin{document}
$A \isinE B$
\end{document}


• XITS Math

\setmathfont{xits-math.otf}


• The Latin Modern Math or TeX Gyre Math fonts do not have the symbol.

This uses a stack, and will work in all mathstyles.

\documentclass{article}
\usepackage{graphicx,stackengine,scalerel}
\usepackage{amsmath}
\newcommand\Inn{\def\stackalignment{c}\def\stacktype{L}\ThisStyle{\mathrel{%
\stackon[0pt]{$\SavedStyle\subset$}{\scalebox{0.86}[1]{$\SavedStyle=$}}}}%
}
\begin{document}

$A\in B$

$A\Inn B\quad \scriptstyle A\Inn B\quad \scriptscriptstyle A\Inn B$
\end{document}