From: Leonardo B. Lopes <leo@iems.nwu.edu>

Date: Tue, 11 Apr 2000 12:05:39 -0500 (CDT)

To: Stan Devitt <jsdevitt@radicalflow.com>

cc: www-math@w3.org

Message-ID: <Pine.GSO.4.04.10004111143560.21586-100000@leontief.iems.nwu.edu>

Date: Tue, 11 Apr 2000 12:05:39 -0500 (CDT)

To: Stan Devitt <jsdevitt@radicalflow.com>

cc: www-math@w3.org

Message-ID: <Pine.GSO.4.04.10004111143560.21586-100000@leontief.iems.nwu.edu>

Thank You for your help. I downloaded the current Open Math standard and I am in the process of studying it. I have an important concern: Are these standards going to be appropriate for communicating huge objects (matrices, etc...)? As I read this material, I realize that my applications requirements are a little different, and I am trying to decide if MathML/Openmath is the way to proceed with my research. Also, are there any optimization people involved in these discussions? I would really appreciate if one of you could get in touch. Thanks, Leo. On Mon, 10 Apr 2000, Stan Devitt wrote: > Apologies, I meant to send this as plain text. > > > > There is provision for extensions that handle such things. > It is through the csymbol element. For example, a > sparse matrix representation could be defined so that > For example, you could write: > > <apply><csymbol definitionURL=".../SparseMatrix">SparseMatrix</csymbol> > <vector><cn>5</cn><cn>5</cn><cn> > <vector><cn>1</cn><cn>1</cn><cn> 3.232432423</cn></vector> > <vector><cn>1</cn><cn>2</cn><cn> 3.01</cn></vector> > <vector><cn>1</cn><cn>5</cn><cn> 3.43543453</cn></vector> > </apply> > > to mean a 5 by 5 sparse matrix with the a[i,j] specified for selected > coordinates. Column defined matrices could be handled in a similar > manner. > > The presentation is handled via XSLT and can range from something > as simple as listing the non-zero table entries, c/w coordinates, through > to generating an actual matrix. > > What is needed is an agreed apon vocabulary and then > references to those definitions. Building such a vocabulary > is one of the goals of the OpenMath project. The MathML content > definitions match (or will shortly) a specific collection of those > definitions. Both groups are tracking changes closely. > > Stan Devitt > > > ======================================================================== Leonardo B. Lopes leo@iems.nwu.edu Ph.D. Student (847)491-8470 IEMS - Northwestern University http://www.iems.nwu.edu/~leoReceived on Tuesday, 11 April 2000 13:05:42 GMT

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