Arc Circle Syntax

[e96]

I cannot find any information on what the tex command is to create the
arc symbol over letters like the following image:
http://www.mathwarehouse.com/images/questions/arc/arc-CH_CCCCFF.jpg

Does anyone know the tex for this (which I hope MathJax supports ;)

[Davide P. Cervone]

If you add

<script type="text/x-mathjax-config">
MathJax.Hub.Config({
TeX: { Augment: {
Definitions: {
macros: {
overparen: ['UnderOver','23DC'],
underparen: ['UnderOver','23DD']
}
}
}}
});
</script>

before the script that loads MathJax.js, then you can use

$\overparen{\rm CH}$

to get a paren over the CH. This is not exactly what you have, but it
is close.

Davide

[elim...@gmail.com]

I have the following in my page head, how to add overparen config?

<SCRIPT src="/MathLib/MathJax/MathJax.js"> 

  MathJax.Hub.Config({

    jax: ["input/TeX","output/HTML-CSS"],

    extensions: ["tex2jax.js","TeX/AMSmath.js","TeX/AMSsymbols.js"],   // use the tex2jax preprocessor

    tex2jax: {

      inlineMath: [['$','$'],['\\(','\\)']], // uncomment to use $...$ for inline math

      processEscapes: 1                      // set to 1 to allow \$ to produce a dollar sign

    },

    TeX: {

      Macros: { 

             fplus: "\\genfrac{}{}{0pt}{}{}{+}", 

             fdots: "\\genfrac{}{}{0pt}{}{}{\\cdots}" 

        } 

    }

  });

</SCRIPT>

[Davide P. Cervone]

I have the following in my page head, how to add overparen config?

Try

<script type="text/x-mathjax-config"> 

  MathJax.Hub.Config({

    tex2jax: {

      inlineMath: [['$','$'],['\\(','\\)']], // uncomment to use $...$ for inline math

      processEscapes: 1                      // set to 1 to allow \$ to produce a dollar sign

    },

    TeX: {

      Macros: { 

        fplus: "\\genfrac{}{}{0pt}{}{}{+}", 

        fdots: "\\genfrac{}{}{0pt}{}{}{\\cdots}" 

      },

      Augment: {
        Definitions: {
          macros: {
            overparen: ['UnderOver','23DC'],
            underparen: ['UnderOver','23DD']
          }
        }

      }

    }

  });

</script>

  <script src="/MathLib/MathJax/MathJax.js?config=TeX-AMS_HTML"></script>

and see if that works.

Davide

[elim...@gmail.com]

Sorry it not seem working (see attached img). Maybe lack of founts? 

[Elim Qiu]

I saved and edited(just clean up irrelevant things) a preview page. Here:

elinkage.net/overparen.html

On Wed, Aug 27, 2014 at 1:57 PM, Davide P. Cervone <dp...@union.edu> wrote:

The definition has gone through correctly (since the macro has been processed).  So the configuration looks OK.  The problem looks like a font issue.

Can you provide a live page that illustrates the problem?

Davide

<002.gif>

[Peter Krautzberger]

Hi,

It's working for me but you should really update MathJax -- you're using MathJax 1.1 which is 3 years old.

Regards,

Peter.

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[Davide P. Cervone]

Peter is right, the main problem is the ancient version of MathJax that you are using.  It doesn't include the data necessary to do the stretching of the overparen character (U+23DC), as that was added in v1.1a (still ancient, but your version is older).  So you will not get good results without updating your copy of MathJax (or switching to the CDN).

Davide

[Elim Qiu]

Thanks a lot Davide and Peter!

I didn't aware of the MathJax version at all... I thought it should be somewhat newer as I did updated a few times on the pkg.  How to check the version of MathJax?

I noticed \not\Rightarrow is not working with 2.4.  Any comments?

Thanks again,

Elim

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[Davide P. Cervone]

> How to check the version of MathJax?

Use the contextual menu (right-click) on any typeset mathematics and select the "About MathJax" item. The version is listed in the message that will be displayed.

Davide