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Angel Luis Diaz is a member of the research staff in the Interactive Transaction Systems Department of IBM's T. J. Watson Research Center in Hawthorne, New York. He is manager of the Advanced Internet Publishing group and is a primary architect and developer of the IBM techexplorer Hypermedia Browser (a plug-in for Web browsers for the interactive display of scientific and technical documents), as well as a leader of several XML tools projects. Dr. Diaz received a PhD in Computer Science from Rensselaer Polytechnic Institute in 1997. He is a co-chair of the World Wide Web Consortium (W3C) Math working group and a principal writer of the Mathematical Markup Language Specification (MathML). Dr. Diaz is also a member of the Cascading Style Sheets (CSS) and Extensible Stylesheet Language (XSL) working groups and a member of the W3C Hypertext Coordination Group.

Doug Lovell is a member of the Advanced Internet Publishing group of the IBM T. J. Watson Research Center in Hawthorne, New York. Before joining IBM in 1995, Mr. Lovell worked for two years at the electronic magazine layout facility of Time, Inc.; five years with an engineering firm as a programmer and manager of CAD facilities; and for a year with a vendor of pre-press hardware and software. His master's thesis in computer science applied the axiomatic semantics of programming languages to the C programming language. Mr. Lovell developed a program in the Prolog programming language for interactively manipulating sentences in first-order predicate calculus. With IBM, Mr. Lovell has worked on image-management tools for the Electronic Marketplace project. He possibly has claim to the most commercial use of the TeX typesetting language; he used it to typeset automobile loan contracts for the Automobile Loan Exchange project.

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