[Bug 36491] New: MathJax: Some mathematical symbols can't be displayed

[bugzilla-daemon]

https://bugzilla.wikimedia.org/show_bug.cgi?id=36491

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             Bug #: 36491
           Summary: MathJax: Some mathematical symbols can't be displayed
           Product: MediaWiki extensions
           Version: unspecified
          Platform: PC
        OS/Version: Windows 7
            Status: NEW
          Severity: normal
          Priority: Unprioritized
         Component: Math
        AssignedTo: wikibugs-l@lists.wikimedia.org
        ReportedBy: chrkipp...@gmail.com
    Classification: Unclassified
   Mobile Platform: ---


Hallo,

thank you for developing MathJax for Wikipedia. In the german Wikipedia we
found some bugs in MathJax displaying some mathematical symbols.
*The Symbol "<" is shown as &lt; with a black box around it.
*The Symbol ">" is shown as &gt; with a black box around it.
*And the code "\&" is shown as &amp; without a blackbox.

At my pc with Windows 7 and Internet Explorer 9 the code "\N \R \C" is shown as
"\N \R \C", but \mathbb{N} \mathbb{R} \mathbb{C} is rendered correctly. Other
people from german Wikipedia don't have problems with that code. Then I use
Firefox 12 to open a page with one of the symbols "\N \R \C" it crashs.

At the german Wikipedia you can find at 
https://de.wikipedia.org/wiki/Portal_Diskussion:Mathematik#‎Mathjax wird
getestet!
a discussion about bugs in Math Jax.

Christian K.

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