In this paper, we describe a technique for
representing the results of mathematical models
by exploiting the power and expressivity of the
Extensible Markup Language, XML.  This uniform 
representation facilitates sharing of information
on the Internet, as well as viewing by many of the 
common tools, such as Matlab, Maple, Tecplot, or a 
web browser.  We allow the user of the application 
to choose the desired file format.  We then use XML, 
together with a style sheet for the particular
application, to produce a document viewable by the 
tool.  An advantage of using XML is that if there is an
application that is not currently supported or if
a new application is available, we simply create a new
style sheet without having to modify the code that
generates the data.