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When using this symbol in a text ÷ XeLaTex says: 

ERROR: Package inputenc Error: Keyboard character used is undefined

--- TeX said ---
(inputenc)                in inputencoding `utf8'.

See the inputenc package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              

l.218 two typographic operators, ÷
                                    and × (these ones are produced in the
--- HELP ---

It works with the aleph and alpha character, but this one seems to be missing. I have included unicode-math, any other additional package I should be including? Besides, it does not like ² and the multiplication "x", either. The former is not in the unicode-math package, but the \times and \div symbol should be.

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2 Answers 2

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A XeLaTeX run on the following example

\documentclass{article}
\usepackage[utf8x]{inputenc}

\begin{document}

two typographic operators, ÷ and ×

\end{document}

only shows a warning

Package inputenc Warning: inputenc package ignored with utf8 based engines.

You have an outdated TeX distribution, as the package has been issuing this warning since version 1.2b, released 2014/04/30.

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Simple answer: Erase or comment out 

\usepackage[utf8x]{inputenc}
\usepackage[T1]{fontenc}

and it will work like a charm. fontenc and inputenc are not really needed in xelatex.

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  • 1
    That's a well known truth that inputenc is not needed for xelatex ;-)
    – user31729
    Commented Dec 27, 2016 at 18:51
  • Well, including it wasn't producing any warning, and the error was not "I don't understand this symbol because you included an unneeded package" I am not too familiar with XeLaTex, either, I'm afraid... I just figured out it was the way to go with the Unicode file (produced by org-mode, BTW)
    – jjmerelo
    Commented Dec 27, 2016 at 18:59

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