Dear colleagues,

Dear colleagues, This issue contains full, traditionally refereed papers with topics presented at the Validated Computing 2002 conference, held in Toronto, May 23 to May 25, 2002. See [1] for a review of that conference and see the web page: for the conference program. The papers in this issue represent the first of the twenty submitted full-length works to be accepted; we anticipate an additional issue containing more of these works. Keeping with the overall conference theme of honoring the contributions of Ramon Moore over the past half-century, Louis Rall, in “Evaluation of Functions, Gradients, and Jacobians,” provides a lucid and concise overview of automatic differentiation, including use of the structure of the process in validation of the results. (Rall asserts that Ramon Moore, in addition to originating interval analysis in its present form, originated automatic differentiation.) Robust geometric computations are one of the application areas that have ben- efitted most from interval computations. Along these lines, Joao ˜ Batista Oliviera and Luiz Henrique de Figueiredo present an algorithm for “Robust Approximation of Offsets, Bisectors, and Medial Axes of Plane Curves.” The careful explana- tions, inclusion of background material, and insightful illustrations make this work noteworthy. In “Numerical Experiences with Reliable Computing Springer Journals

Dear colleagues,

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Kluwer Academic Publishers
Copyright © 2003 by Kluwer Academic Publishers
Mathematics; Numeric Computing; Approximations and Expansions; Computational Mathematics and Numerical Analysis; Mathematical Modeling and Industrial Mathematics
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