Problem rendering content within <mover> tags

[Priya and Rishi]

Hi all,

The following MathML equation is not rendering correctly using MathJax
version 2.0. In Internet Explorer versions 8 and 9, I get a "Math
processing error". In Firefox version 9 and Chrome, there is no Math
processing error however the equation does not render correctly.

However if I remove the <mover> tags from within the MathML below, I
don't get a Math processing error in IE.

The MathML is as follows
<math xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://
www.w3.org/2001/XMLSchema-instance" display="block"
overflow="scroll"><mtable align="axis" alignmentscope="true"
columnalign="left" columnlines="none" columnspacing="0.8em"
columnwidth="auto" displaystyle="false" equalcolumns="false"
equalrows="false" frame="none" framespacing="0.4em 0.5ex"
minlabelspacing="0.8em" rowalign="baseline" rowlines="none"
rowspacing="1.0ex" side="right" width="auto"><mtr columnalign="center"
rowalign="baseline"><mtd columnalign="center" columnspan="1"
rowalign="baseline" rowspan="1"><msub><mover accent="true"><mi>Q</
mi><mo>a</mo></mover><mrow><mtext>cv</mtext></mrow></msub><mo>a</
mo><msub><mover accent="true"><mi>W</mi><mo>a</mo></
mover><mrow><mtext>cv</mtext></mrow></msub><mo>=</mo><mstyle
background="transparent" displaystyle="true" linethickness="1"
mediummathspace="0.222222em" scriptminsize="8pt"
scriptsizemultiplier="0.71" thickmathspace="0.277778em"
thinmathspace="0.166667em" verythickmathspace="0.333333em"
verythinmathspace="0.111111em" veryverythickmathspace="0.388889em"
veryverythinmathspace="0.0555556em"><mo>a</mo><mrow><msub><mover
accnt="true"><mi>m</mi><mo>a</mo></mover><mrow><mtext>out</mtext></
mrow></msub><mrow><mo>(</mo><mrow><msub><mi>h</mi><mrow><mtext>out</
mtext></mrow></msub><mo>+</mo><mfrac denomalign="center"
linethickness="1" numalign="center"><mrow><msubsup><mi>V</
mi><mrow><mtext>out</mtext></mrow><mtext>2</mtext></msubsup></
mrow><mn>2</mn></mfrac><mo>+</mo><mi>g</mi><msub><mi>z</
mi><mrow><mtext>out</mtext></mrow></msub></mrow><mo>)</mo></mrow></
mrow></mstyle><mo>a</mo></mtd></mtr>
</mtable></math>

The reference to the MathJax javascript I am using is as follows
<script type="text/javascript" src="/js/MathJax/MathJax.js?config=TeX-
AMS-MML_HTMLorMML"> </script>

I have checked the above MathML using http://www.mathmlcentral.com/Tools/FromMathML.jsp
and the equation seems to be generated correctly in that tool.

I would be grateful if someone could advise me about this.

Thanks,
Priya

[Frédéric WANG]

Hi,

Did you try to verify your page with a validator (for example
http://validator.w3.org/)?
It seems that there is a typo: "accnt" should be "accent".

--
Fr�d�ric Wang
maths-informatique-jeux.com/blog/frederic

[Priya and Rishi]

Hi Frédéric,

Thanks for the response. I tried correcting the attribute to "accent"
but I still get the same Math processing error.

The corrected MathML is

<math xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://
www.w3.org/2001/XMLSchema-instance" display="block"
overflow="scroll"><mtable align="axis" alignmentscope="true"
columnalign="left" columnlines="none" columnspacing="0.8em"
columnwidth="auto" displaystyle="false" equalcolumns="false"
equalrows="false" frame="none" framespacing="0.4em 0.5ex"
minlabelspacing="0.8em" rowalign="baseline" rowlines="none"
rowspacing="1.0ex" side="right" width="auto"><mtr columnalign="center"
rowalign="baseline"><mtd columnalign="center" columnspan="1"
rowalign="baseline" rowspan="1"><msub><mover accent="true"><mi>Q</
mi><mo>a</mo></mover><mrow><mtext>cv</mtext></mrow></msub><mo>a</
mo><msub><mover accent="true"><mi>W</mi><mo>a</mo></
mover><mrow><mtext>cv</mtext></mrow></msub><mo>=</mo><mstyle
background="transparent" displaystyle="true" linethickness="1"
mediummathspace="0.222222em" scriptminsize="8pt"
scriptsizemultiplier="0.71" thickmathspace="0.277778em"
thinmathspace="0.166667em" verythickmathspace="0.333333em"
verythinmathspace="0.111111em" veryverythickmathspace="0.388889em"
veryverythinmathspace="0.0555556em"><mo>a</mo><mrow><msub><mover

accent="true"><mi>m</mi><mo>a</mo></mover><mrow><mtext>out</mtext></

mrow></msub><mrow><mo>(</mo><mrow><msub><mi>h</mi><mrow><mtext>out</
mtext></mrow></msub><mo>+</mo><mfrac denomalign="center"
linethickness="1" numalign="center"><mrow><msubsup><mi>V</
mi><mrow><mtext>out</mtext></mrow><mtext>2</mtext></msubsup></
mrow><mn>2</mn></mfrac><mo>+</mo><mi>g</mi><msub><mi>z</
mi><mrow><mtext>out</mtext></mrow></msub></mrow><mo>)</mo></mrow></
mrow></mstyle><mo>a</mo></mtd></mtr>
</mtable></math>

Regards,
Priya

On May 10, 5:07 pm, Frédéric WANG <fred.w...@free.fr> wrote:
> Hi,
>

> Did you try to verify your page with a validator (for examplehttp://validator.w3.org/)?

> > I have checked the above MathML usinghttp://www.mathmlcentral.com/Tools/FromMathML.jsp

> > and the equation seems to be generated correctly in that tool.
>
> > I would be grateful if someone could advise me about this.
>
> > Thanks,
> > Priya
>
> --

> Fr�d�ric Wang
> maths-informatique-jeux.com/blog/frederic

[Frédéric WANG]

I don't know if that happened when you copy / paste the code in your
mail, but you should not break the closing element on two lines

"</
mi>"

should be

"</mi>"

Again, please try
http://validator.w3.org/#validate_by_upload

On 10/05/2012 18:28, Priya and Rishi wrote:
> Hi Fr�d�ric,

[Davide P. Cervone]

Both the incorrect rendering in Firefox and Chrome and the Math
Processing Error in IE (when not in IE9 standards mode) are due to a
bug in MathJax and seems to be triggered by the align="axis" setting.
I will look into it further, but for now, if you can remove that
attribute, it should work for you.

Davide

[Priya and Rishi]

Hi Davide,

Removing the align="axis" attribute fixed the problem in all three
browsers. Thanks a lot for the help!

Regards,
Priya

> > I have checked the above MathML usinghttp://www.mathmlcentral.com/Tools/FromMathML.jsp

[Priya and Rishi]

Hi Davide,

Could you please let me know whether the align="axis" attribute should
be removed from all the mml elements or only from the mtable element?
Also I assume that only "align" attributes that have a value of "axis"
should be removed and not the "align" attributes with other values.
Could you please confirm?

Thanks for your help.

Priya

On May 10, 5:58 pm, "Davide P. Cervone" <d...@union.edu> wrote:

> > I have checked the above MathML usinghttp://www.mathmlcentral.com/Tools/FromMathML.jsp

[Davide P. Cervone]

I think that the issue is the following (though I haven't confirmed
it): the element inside the table are incorrectly inheriting the
align attribute from the table (as though it were an mstyle), and so
the table's align attribute is being applied to the mover elements
inside the table. It doesn't really matter what value the align has,
it is the presence of the align that is the problem. I think you will
either have to remove the align entirely, or set it to "center" (which
is what the mover elements need), or add explicit align="center" to
the mover elements. I think any of those would do the trick.

Davide