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Styles of using p-MathML

From: Wendell P <wendellp@operamail.com>
Date: Tue, 24 Jan 2012 15:54:54 -0800
Message-Id: <1327449294.11038.140661027610401@webmail.messagingengine.com>
To: www-math@w3.org
I used the MathType, Math+Magic, and Formulator equation editors to
render this as MathML:

$$ \hat G^{(T)} = \frac{1}{T} \sum_{t=m+1}^{T} \pi^t $$
http://img36.imageshack.us/img36/8418/codecogseqn.png

Below is the slightly cleaned-up code from each. They seem to represent
quite different ideas of how things should be done. The different
versions render the same in most environments I have tried, so I would
lean toward using the simplest markup, like Formulator. In what
situations would I want to use heavier markup like Math+Magic?

--------------------------------
FORMULATOR
<math display='block' xmlns='http://www.w3.org/1998/Math/MathML'>
 <mrow>
  <msup>
   <mover>
    <mi>G</mi>
    <mo stretchy='true'>&circ;</mo>
   </mover>
   <mrow>
    <mo stretchy='false'>(</mo>
    <mi>T</mi>
    <mo stretchy='false'>)</mo>
   </mrow>
  </msup>
  <mo>=</mo>
  <mfrac>
   <mn>1</mn>
   <mi>T</mi>
  </mfrac>
  <mrow>
  <munderover>
   <mo>&sum;</mo>
   <mrow>
    <mi>t</mi>
    <mo>=</mo>
    <mi>m</mi>
    <mo>&plus;</mo>
    <mn>1</mn>
   </mrow>
   <mi>T</mi>
  </munderover>
  <msup>
   <mi>&pi;</mi>
   <mi>t</mi>
  </msup>
  </mrow>
 </mrow>
</math>
--------------------------------
MATHTYPE
<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
 <mrow>
  <msup>
   <mover accent='true'>
    <mi>G</mi>
    <mo>&#x005E;</mo>
   </mover>
   <mrow>
    <mo stretchy='false'>(</mo>
    <mi>T</mi>
    <mo stretchy='false'>)</mo>
   </mrow>
  </msup>
  <mo>=</mo>
  <mfrac>
   <mn>1</mn>
   <mi>T</mi>
  </mfrac>
  <mstyle displaystyle='true'>
   <munderover>
    <mo>&#x2211;</mo>
    <mrow>
     <mi>t</mi>
     <mo>=</mo>
     <mi>m</mi>
     <mo>+</mo>
     <mn>1</mn>
    </mrow>
    <mi>T</mi>
   </munderover>
   <mrow>
    <msup>
     <mi>&#x03C0;</mi>
     <mi>t</mi>
    </msup>
   </mrow>
  </mstyle>
 </mrow>
</math>

--------------------------------
MATH+MAGIC
<math display="block" xmlns="http://www.w3.org/1998/Math/MathML">
 <semantics>
  <mstyle mathcolor="#000000" mathsize="12.0pt">
   <msup>
    <mover>
     <mi mathvariant="italic">G</mi>
     <mo accent="true">&#x005E;</mo>
    </mover>
    <mrow>
     <mi mathsize="50.0%">(</mi>
     <mi mathsize="50.0%" mathvariant="italic">T</mi>
     <mi mathsize="50.0%">)</mi>
    </mrow>
   </msup>
   <mo>=</mo>
   <mfrac>
    <mn>1</mn>
    <mi mathvariant="italic">T</mi>
   </mfrac>
   <mrow>
   <munderover>
    <mo>&#x2211;</mo>
    <mrow>
     <mi mathsize="50.0%" mathvariant="italic">t</mi>
     <mo mathsize="50.0%">=</mo>
     <mi mathsize="50.0%" mathvariant="italic">m</mi>
     <mo mathsize="50.0%">+</mo>
     <mn mathsize="50.0%">1</mn>
     </mrow>
    <mi mathsize="50.0%" mathvariant="italic">T</mi>
   </munderover>
   <msup>
    <mo mathvariant="italic">&#x03C0;</mo>
    <mi mathsize="50.0%" mathvariant="italic">t</mi>
   </msup>
   </mrow>
  </mstyle>
 </semantics>
</math>

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Received on Tuesday, 24 January 2012 23:55:20 GMT

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