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I have a textbook which uses the following character to represent a matrix:

enter image description here

I would like to use the same character in my assignment, but I can't figure out how to type it. I tried \chi and \mathcal{X}, but they produce different results.

ostrokach
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  • Welcome! Where is the image from? If from a PDF, what fonts does it use? Something like this? https://i.stack.imgur.com/aLK7B.png – cfr Apr 15 '17 at 02:27

1 Answers1

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Looks like the "X" from Euler script, as shown in the table below, just under the "Calligraphic" header, in the "Upright" subsection.

Table was taken from this answer.

enter image description here

Nat
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    Yup, I added \usepackage{eucal} at the top of my file, and \mathcal{X} produces the correct output now. Could you elaborate on how you would use the scripts from the table that you posted? I'm not exactly sure what \mathcal does, and why \usepackage{eucal} changes its output? Thanks! – ostrokach Apr 15 '17 at 02:38
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    @ostrokach \mathcal is for calligraphic math symbols, and \usepackage{euler} changes the output because it sets a different typeface for math. – erik Apr 15 '17 at 03:21