# What is the name of the default font in math mode?

I draw figures in Inkscape. When I label elements within the figures with variable names that I have used in the underlying TeX document, I would like them to look exactly the same as in the document. (e.g. l does not look the same as $l$)

What is the name of the math mode font so I can select it correctly in the Inkscape font list?

If the exact font should not be available, what is a similar looking font that is present on most systems?

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use the Latin Modern Symbol font. –  Herbert Jul 6 '11 at 12:26
Why don't you export you document from inkscape with the latex-option. This is part of the pdf export. It will save the picture as pdf and all text as a tex file. In your document you can simply \input the generated tex file and all text is rendered with whatever font you are currently using. –  Martin H Jul 6 '11 at 13:51
@Martin H: That sounds like a good alternative, I had not heard about. Are you referring to 'Save as...-->LaTeX with PSTricks macros'? I could not find anything on a specialized pdf export. Do you have a link? –  Hauke Jul 7 '11 at 13:40
Hi, no I am referring to a feature that is available in version 0.48 of inkscape. File->save a copy, select PDF and click "save". In the next window that pops up tick the box "PDF+LaTeX". As I said before, this will generate a PDF graphic and a tex file with positioning information for all text elements. open the tex file, the comments at the top contain information about how to include it in latex documents –  Martin H Jul 7 '11 at 22:21

The font is a math font that is not available as OpenType. No, wait: it is! There's the new "Latin Modern Math" that's in the new TeX Live 2011 (to be released in a few days). The font is here. I haven't seen it yet in CTAN, though. The default font is Computer Modern, but the differences with Latin Modern are negligible for your needs.

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Great, the words Computer Modern lead me here. Seems that Inkscape needs a little extra love in the form of .otf fonts. I used 'LMRoman10' for the variables and am happy with the result. –  Hauke Jul 6 '11 at 12:54
@Heuke: You need to use [text](http://url/) in comments to add links. I took the liberty fixing it for you. See the 'help' to the right of the comment edit box for more info. –  Martin Scharrer Jul 6 '11 at 14:47
For a PDF LaTeX document with only $i$ as content (and empty pagestyle to avoid the page number) I got using pdffonts the font name ZTAVXI+CMMI10 (the CMMI10 is the important part AFAIK and stands I presume for "Computer Modern Math Italic 10pt"). My full TeXLive2010 installation included only the TeX fonts, but apparently LyX delivers it as TTF font, at least I found it under /usr/share/fonts/truetype/ttf-lyx/cmmi10.ttf with my Linux installation. You might need it however as OpenType font. AFAIK it might be better to not use the original default font but a newer replacement like lmodern (load that as package) or the font egreg mentioned in his answer.
I use Times New Roman Italic in Inkscape, and it's close enough for my needs. But I also wish to use \mathbb in Inkscape (for a complement of a knot in $\mathbb{R}^3$). What font do I have to import in Inkscape to do that? When I look at $\mathbb{R}$ in PDF, it says the font is MSBM10. Some other font, similar enough, would also suffice. Oh, and what does AFAIK mean? –  Leon Lampret Jul 29 '11 at 1:49