I have been trying to match the following style for some work I am doing but can't see to match the various font weights very well. Does anyone know which fonts are being used?

enter image description here

In particular I can't seem to get the curly l, the 5 pointed asterisk and the right kerning between the fn and x.

  • You can get the "curly l" by typing \ell.
    – user15497
    Jun 11, 2012 at 3:47

1 Answer 1


That's Helvetica and Courier - probably from using a Times font package \usepackage{mathptmx} (they tend to pull Helvetica and Courier for sans serif and monospaced text). The curly "C" looks like a usual \mathcal. The double brackets are probably from stmaryrd.sty and are called \llbracket and \rrbracket. The star is \star. And the curly l is \ell.

  • 3
    The kerning between fn and "x" is probably obtained by \mathop{\mathtt{fn}}x
    – egreg
    Mar 16, 2012 at 23:14

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