In addition to Jean's recommendation, there is also another approach. You
can find some discussion of this here:
https://tex.stackexchange.com/a/251498
Basically, you can use these options (in addition to your other hyperref
options, of course):
\usepackage[pdfencoding=auto, psdextra]{hyperref}
This won't get rid of the "math shift" warnings, however. You'll need to
follow Jean's recommendation and use \texorpdfstring if you want those math
shift warnings gone completely. For example:
\section{stuff \texorpdfstring{$\omega$}{w} stuff}
Another approach altogether is to replace the math symbols in your section
headings with ones from the "textgreek" package, like this:
\usepackage{textgreek}
\usepackage[...]{hyperref}
\begin{document}
...
\section{stuff \textomega stuff}% vs. the current \section{stuff $\omega$
stuff} approach
...
\end{document}
On Sat, May 12, 2018 at 6:45 AM, Jean Filleau <jefil...@orange.fr> wrote:
> You should probably use the command \texorpdfstring{TEXstring}{PDFstring}
>
> See Hyperref-manualpdf p. 19 :
>
> hyperref takes the text for bookmarks from the arguments of commands like
> \section, which can contain things like math, colors, or font changes, none
> of which will display in bookmarks as is.
>
> \texorpdfstring{TEXstring}{PDFstring}
> For example,
> \section{Pythagoras:
> \texorpdfstring{$ a^2 + b^2 = c^2 $}{%
> a\texttwosuperior\ + b\texttwosuperior\ =
> c\texttwosuperior
> }%
> }
> \section{\texorpdfstring{\textcolor{red}}{}{Red} Mars}
>
> Jean
>
>
> Le 11/05/2018 à 14:32, Sasho Popov a écrit :
>
>> I use MikTeX 2.9. Now, according to the requirements of an AIMS journal,
>> I should use package hyperref. I obtain 27 warnings of the type
>>
>> Package hyperref Warning: Token not allowed in a PDF string
>> (PDFDocEncoding):
>> (hyperref) removing `\omega' on input line 512.
>>
>> I do not know what to do and need help. Thank you in advance.
>>
>> Sasho
>>
>>
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