[liblouis-liblouisxml] Re: How does MathML handle arithmetic examples and spatial layouts?
- From: Neil Soiffer <neil.soiffer@xxxxxxxxx>
- To: liblouis-liblouisxml@xxxxxxxxxxxxx
- Date: Fri, 13 Nov 2009 08:40:49 -0800
Here's the URL to the beginning of the spec:
http://www.w3.org/TR/MathML3
I gave you one that pointed to the elementary math part:
http://www.w3.org/TR/MathML3/chapter3.html#presm.elementary
Neil
On Fri, Nov 13, 2009 at 3:08 AM, John J. Boyer <john.boyer@xxxxxxxxxxxxxxxxx
> wrote:
> Thanks for the examples. Can you give me the url for MathML 3?
>
> Thanks,
> John
>
> On Thu, Nov 12, 2009 at 08:26:36PM -0800, Neil Soiffer wrote:
> > MathML 2 doesn't have a good way to represent elementary math
> notations.*
> > You could use tables, but then you have lost the numbers and they are
> very
> > fragile, it's hard to get the lines right, etc.* MathML 3, which just
> > ended it's last call period yesterday, adds some elements to make
> > elementary math easier and hopefully accessible.
> >
> > Here's an example for a simple addition (there is a space after the
> "+"):
> >
> > <math xmlns="[1]http://www.w3.org/1998/Math/MathML";>
> > <mstack>
> > * <mn>424</mn>
> > * <msrow> <mo>+</mo> <none/> <mn>33</mn> </msrow>
> > * <msline/>
> > </mstack>
> > </math>
> >
> > Here's an example of subtraction with borrows:
> > <math xmlns="[2]http://www.w3.org/1998/Math/MathML";>
> > <mstack>
> > * <mscarries crossout='updiagonalstrike'>
> > **** <mn>2</mn> <mn>12</mn> <mscarry crossout='none'> <none/>
> </mscarry>
> > ** </mscarries>
> > ** <mn>2,327</mn>
> > ** <msrow> <mo>-</mo> <mn> 1,156</mn> </msrow>
> > ** <msline/>
> > ** <mn>1,171</mn>
> > </mstack>
> > </math>
> >
> > Finally, here's a more complicated example of long division
> >
> > <mlongdiv longdivstyle="lefttop">
> > <mn> 3 </mn>
> > <mn> 435.3</mn>
> >
> >
> > <mn> 1306</mn>
> >
> > <msgroup position="2" shift="-1">
> > <msgroup>
> > <mn> 12</mn>
> > <msline length="2"/>
> > </msgroup>
> >
> > <msgroup>
> > <mn> 10</mn>
> > <mn> 9</mn>
> > <msline length="2"/>
> > </msgroup>
> > <msgroup>
> > <mn> 16</mn>
> > <mn> 15</mn>
> >
> > <msline length="2"/>
> > <mn> 1.0</mn> <!-- aligns on '.', not the right edge
> ('0') -->
> > </msgroup>
> > <msgroup position='-1'> <!-- extra shift to move to the right of
> the "." -->
> >
> > <mn> 9</mn>
> > <msline length="3"/>
> > <mn> 1</mn>
> > </msgroup>
> > </msgroup>
> > </mlongdiv>
> >
> > To keep things simple (one digit per column) for these important
> > notations, they don't work for synthetic division.* For that you would
> > have to use mtable, although there are some tricks that I think might
> let
> > you make use of mstack -- I haven't thought them through.
> >
> > You can read about it here:
> > [3]http://www.w3.org/TR/MathML3/chapter3.html#presm.elementary
> > Based on feedback during the last call, there have been a few changes,
> but
> > that is mostly accurate.* We hope to have a "Call for Implementations"
> > draft out before Christmas.* It would be great to get your feedback on
> > trying to implement the elementary math in the two month(?) period for
> > that.
> >
> > **** Neil
> >
> > On Thu, Nov 12, 2009 at 6:56 PM, John J. Boyer
> > <[4]john.boyer@xxxxxxxxxxxxxxxxx> wrote:
> >
> > Yes. I am asking about 2d addition, subtraction, division, etc.,
> where
> > the units, tens and so on are lined up. Also about synthetic
> division
> > and representations of fractions that are spread out for better
> viewing.
> > I suppose mtable is used, but what are the attributes and values?
> >
> > Thanks,
> > John
> > On Thu, Nov 12, 2009 at 03:06:29PM -0800, Neil Soiffer wrote:
> > > * *I'm not quite sure what you are asking.* Are you asking about
> 2d
> > addition,
> > > * *subtraction, etc?* Or are you referring to something else?
> > >
> > > * ***** Neil
> > >
> > > * *On Thu, Nov 12, 2009 at 8:12 AM, John J. Boyer
> > > * *<[1][5]john.boyer@xxxxxxxxxxxxxxxxx> wrote:
> > >
> > > * * *I'm trying to explain how to get liblouisxml to handle them
> in
> > the
> > > * * *documentation, but I haven't actullly seen them in MathML. I
> > guess this
> > > * * *is a question for Neil.
> > >
> > > * * *Thanks,
> > > * * *John
> > >
> > > * * *--
> > > * * *John J. boyer; President, Chief Software Developer
> > > * * *Abilitiessoft, Inc.
> > > * * *[2][6]http://www.abilitiessoft.com
> > > * * *Madison, Wisconsin USA
> > > * * *Developing software for people with disabilities
> > >
> > > * * *For a description of the software and to download it go to
> > > * * *[3][7]http://www.jjb-software.com
> > >
> > > References
> > >
> > > * *Visible links
> > > * *1. mailto:[8]john.boyer@xxxxxxxxxxxxxxxxx
> > > * *2. [9]http://www.abilitiessoft.com/
> > > * *3. [10]http://www.jjb-software.com/
> > --
> > John J. boyer; President, Chief Software Developer
> > Abilitiessoft, Inc.
> > [11]http://www.abilitiessoft.com
> > Madison, Wisconsin USA
> > Developing software for people with disabilities
> >
> > For a description of the software and to download it go to
> > [12]http://www.jjb-software.com
> >
> > References
> >
> > Visible links
> > 1. http://www.w3.org/1998/Math/MathML
> > 2. http://www.w3.org/1998/Math/MathML
> > 3. http://www.w3.org/TR/MathML3/chapter3.html#presm.elementary
> > 4. mailto:john.boyer@xxxxxxxxxxxxxxxxx
> > 5. mailto:john.boyer@xxxxxxxxxxxxxxxxx
> > 6. http://www.abilitiessoft.com/
> > 7. http://www.jjb-software.com/
> > 8. mailto:john.boyer@xxxxxxxxxxxxxxxxx
> > 9. http://www.abilitiessoft.com/
> > 10. http://www.jjb-software.com/
> > 11. http://www.abilitiessoft.com/
> > 12. http://www.jjb-software.com/
>
> --
> John J. boyer; President, Chief Software Developer
> Abilitiessoft, Inc.
> http://www.abilitiessoft.com
> Madison, Wisconsin USA
> Developing software for people with disabilities
>
> For a description of the software and to download it go to
> http://www.jjb-software.com
>
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