Mathematics in Computer Science

, Volume 2, Issue 2, pp 379–398 | Cite as

The Freedom to Extend OpenMath and its Utility

  • James H. DavenportEmail author
  • Paul Libbrecht


OpenMath is a standard for representing the semantics of mathematical objects. It differs from Presentation MathML in not being directly concerned with the presentation of the object, and from Content MathML 2 in being extensible.

How should these extensions be performed so as to maximize the utility (which includes presentation) of OpenMath? How could publishers have the freedom to extend and let consumers find their way with expressions discovered on the Web? The answer up to now has been, too often, to say “this is not specified” whereas the existing content dictionary mechanism of OpenMath allows it to include formal properties which state mathematical facts that should stay uncontradicted while manipulating the symbols.

The contribution of this paper is to propose methods to exploit the content dictionaries so as to allow an OpenMath-consuming tool to process expressions even if containing symbols it did not know about before. This approach is generalized to allow such newly discovered symbol to be, for example, rendered or input.

Mathematics Subject Classification (2000).

00A35 00A22 68M14 68P20 68T30 


Notation semantics multilinguality World Wide Web 


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Copyright information

© Birkhäuser Verlag Basel/Switzerland 2008

Authors and Affiliations

  1. 1.Department of Computer ScienceUniversity of BathBathEngland
  2. 2.DFKI GmbHSaarbrückenGermany

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