From: Bill Naylor <Bill.Naylor@mcs.vuw.ac.nz>

Date: Wed, 9 Apr 2003 12:19:44 +1200 (NZST)

To: Maths for More <info@mathsformore.com>

cc: David Carlisle <davidc@nag.co.uk>, www-math@w3.org

Message-ID: <Pine.SOL.4.51.0304091202180.4806@debretts.mcs.vuw.ac.nz>

Date: Wed, 9 Apr 2003 12:19:44 +1200 (NZST)

To: Maths for More <info@mathsformore.com>

cc: David Carlisle <davidc@nag.co.uk>, www-math@w3.org

Message-ID: <Pine.SOL.4.51.0304091202180.4806@debretts.mcs.vuw.ac.nz>

On Tue, 8 Apr 2003, Maths for More wrote: > Date: Tue, 08 Apr 2003 21:46:39 +0200 > From: Maths for More <info@mathsformore.com> > To: David Carlisle <davidc@nag.co.uk> > Cc: www-math@w3.org > Subject: Re: Combinatorial numbers > Resent-Date: Tue, 8 Apr 2003 15:42:26 -0400 (EDT) > Resent-From: www-math@w3.org > > > That is exactly what I was looking for, I am specially interested in the Content MathML elements. > I will study more about <csymbol> > > thanks another possibility is to use the semantics element (suggested by David), in the following way: <apply> <semantics> <mySymb:binomial xmlns:mySymb="http:my.namespace"/> <annotation-xml encoding="OpenMath" xmlns:om="http://www.openmath.org/OpenMath"> <om:OMS cd="combinat1" name="binomial"/> </annotation-xml> </semantics> <ci>n</ci> <ci>m</ci> </apply> other possibilities are to use alternative presentations instead of the element mySymb:binomial (for more details see: http://www.mcs.vuw.ac.nz/~bill/Papers/MathML2002/mathML2002.html ) or include the arguments as OpenMath objects inside the annotation-xml element. hope this helps, Bill > > > > 08/04/2003 09:37:10 p.m., David Carlisle <davidc@nag.co.uk> wrote: > > > > >I'm not sure quite what you mean by combinatorial numbers? > >Do you mean "n choose m" notations for the number of combinations > >choosing m items from n, if sothere's an example to get > >(m) > >(n) > >notation using mfrac in the mathml spec in chapter 3. > ><mrow> > > <mo> ( </mo> > > <mfrac linethickness="0"> > > <mi> a </mi> > > <mi> b </mi> > > </mfrac> > > <mo> ) </mo> > ></mrow> > > > > > >If you want the > > m > >C > > n > > > >notation you would use msubsup with a C in the base. > > > >There is no standard Content MathML element for this, but you could use > ><csymbol>choose</csymbol> > >together with a stylesheet or mathml semantics element specifying one of > >the above presentation mathml forms for display. > > > >David > > > > > > Cordialment, > Ramon > > > > Ramon Eixarch i Ferrer > Managing Director > Maths for More > > ramon@mathsformore.com > http://www.mathsformore.com > > (+34) 932 804 805 > (+34) 649 752 179 > > > > >Received on Tuesday, 8 April 2003 20:20:03 UTC

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