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Does anyone happen to know how to typeset the special L character found, for example, in eq. 2.41 in this paper: http://arxiv.org/pdf/1107.5792v2.pdf that is being used for the Lie derivative? Thanks for the help!

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    It seems to be the pound symbol: try \mathsterling. By the way, there is a website which can help you with this type of questions: detexify.kirelabs.org. And Welcome to TeX.sx! – Corentin Mar 15 '13 at 19:31
  • @Corentin Thanks for the tip and the welcome! – joshphysics Mar 15 '13 at 19:51
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Sadly I think this is probably the sign for GBP (Great British Pounds) which is achieved with \pounds.

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    In fact you can go to arxiv.org/format/1107.5792 and download the TeX source file for their document. There you'll find the command \newcommand\Lie{\pounds}. – Jay Taylor Mar 15 '13 at 19:33
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    there's nothing sad about the Great British Pound! :) – cmhughes Mar 15 '13 at 19:50
  • Oh wow that's actually hilarious; I didn't notice that. Thanks for the tip about TeX source also btw! – joshphysics Mar 15 '13 at 19:51
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    No, it's only sad to see it abused and out of context! ;) No worries. It's something good to keep in mind for the next time you upload a paper to the arXiv! – Jay Taylor Mar 15 '13 at 20:21
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Do you mean the pound sterling sign (£)? You could just use the unicode character: £. I think it might even be on any keyboard with some Alt+key or Strg+key combination. On my mac it is Alt+Shift+4, just where the $ is.

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\mathcal{L} is what I have used in the past, if you don't want to use the \pounds sign.

  • Yeah I considered that but then realized that \mathcal is hella played out. – joshphysics Nov 6 '15 at 2:25
  • Heh, just realized that if you pronounce \mathcal{L} out loud, it sounds like a math-y Superman... – Reinstate Monica Nov 14 '17 at 18:22

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