What is the name of this letter?

Question

I found the symbol below on an article, but I don't know its name.

weird math symbol

Thanks

There is a page called detexify which is great for this kind of questions. — Student tea, Dec 12 '14 at 10:03
@Integrator: I do not think you may replace original question with your interpretations. Please, put the image back. — Incnis Mrsi, Dec 12 '14 at 11:37
This is question fits better on http://tex.stackexchange.com/. — a06e, Dec 12 '14 at 14:15
The voting on this page makes me very sad. (No offense to the users!) — Asaf Karagila, Dec 12 '14 at 18:40
Voted to reopen. I think that asking here about a confusing symbol found in mathematical literature is a perfectly fine use for the site (in fact, better than coming here to ask homework questions)... — user7530, Dec 13 '14 at 00:18
Yes, the number of votes and views is unusual. It should probably be moved to tex.se. — Vortico, Dec 15 '14 at 13:15

score 19 · Accepted Answer · edited Dec 12 '14 at 11:22

19

This is the character $$\Huge \mathfrak{X} $$ or \mathfrak{X}, which is just a capital X in the Fraktur typeface.

edited Dec 12 '14 at 11:22

Zhen Lin

answered Dec 12 '14 at 09:59

Vortico

1 Answers1