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Assume I write something about LaTeX in email. I use UTF-8 so I can use any UNICODE character I want. Which characters should I technically use for name "LaTeX"? I believe that LaTeX originally did not mean letters L + a + T + e + X (that is, mixture of uppercase and lowercase ASCII characters). I know that usually LaTeX is written in ASCII characters only outside LaTeX source code where one just enters \LaTeX.

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  • The name is latex or LaTeX, there is no special unicode involved. \LaTeX is a logo. I normally use latex or pdflatex when I mean the application or when I'm lazy, and LaTeX for the format.
    – Ulrike Fischer
    Oct 22, 2015 at 11:02
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    I think the question is mainly if the X should be Greek Capital Letter Xi
    – MaxNoe
    Oct 22, 2015 at 11:06
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    U+004c LATIN CAPITAL LETTER L U+0061 LATIN SMALL LETTER A U+0054 LATIN CAPITAL LETTER T U+0065 LATIN SMALL LETTER E U+0058 LATIN CAPITAL LETTER X
    – David Carlisle
    Oct 22, 2015 at 12:09
  • Why not U+004C LATIN CAPITAL LETTER L U+0061 LATIN SMALL LETTER A U+03A4 GREEK CAPITAL LETTER TAU U+0395 GREEK CAPITAL LETTER EPSILON U+03A7 GREEK CAPITAL LETTER CHI as in LAΤΕΧ?
    – Mikko Rantalainen
    Oct 23, 2015 at 7:22

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The latex logo does not contain any special characters. It has only normal uppercase roman letters. It is traditionally typed in latex itself with said logo with the command \LaTeX. Outside of latex, people usually write "LaTeX" or "latex". Also see Wikipedia on this.

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