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Is there a way to introduce a new integration symbol? Specifically I want to be able to use ⨍. I have no problem entering it into mm, but the size does not change like the standard \int does.

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    $\begingroup$ For the benefit of those (like me) whose browser doesn't render that symbol: fileformat.info/info/unicode/char/2a0d/index.htm $\endgroup$ – user484 Aug 25 '13 at 23:57
  • $\begingroup$ The unicode character 2a0d is not recognized by Mathematica as having any special significance and, therefore, there is no built-in support for formatting it as there is for \[Integral]. $\endgroup$ – m_goldberg Aug 26 '13 at 0:32
  • $\begingroup$ If you need this purely for typesetting, it may be possible to use Overlay to put a \[Dash] on top of an integral sign ... $\endgroup$ – Szabolcs Jan 9 '14 at 20:31
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As commented by m_goldberg:

The unicode character 2a0d is not recognized by Mathematica as having any special significance and, therefore, there is no built-in support for formatting it as there is for ∫ (\[Integral])

Moreover, if you enter it as a Unicode character using \:2a0d Mathematica displays it as an empty box. It doesn't look like there's any support for doing what you want.

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