[Tex/LaTex] this symbol called

symbols

I have just found the following symbol in the book, Multidimensional Real Analysis I: Differentiation by "J.J. Duistermaat and J.A.C. Kolk. The meaning of the symbol is "a map from a subset of the domain to the range". I would like to know the latex code of the symbol.

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Best Answer

I didn't find this symbol neither with Detexify nor in "The Comprehensive LaTeX Symbol List".

But it can be obtained with \supset\kern-1.7pt\rightarrow

MWE

\documentclass{article}

\begin{document}
\[\supset\kern-1.7pt\rightarrow\]
\end{document}

Result

enter image description here

If you want you can define a new command, let's say \supsetarrow, to simplify using it:

\newcommand{\supsetarrow}{\supset\kern-1.7pt\rightarrow}

Edit from egreg's suggestion

Probably using 

\newcommand{\supsetarrow}{\supset\mathrel{\mkern-3.1mu}\rightarrow}

gives better results in sub/superscripts, although not in second level ones.

Choose the one that better fits your needs.

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