Near-optimal parameterization of the intersection of quadrics

  • Authors:
  • Laurent Dupont;Daniel Lazard;Sylvain Lazard;Sylvain Petitjean

  • Affiliations:
  • LORIA - CNRS, Vanduvre-ls-Nancy, France;LIP6, Universita Paris 6, Paris, Cedex 05, France;LORIA - CNRS, Vanduvre-ls-Nancy, France;LORIA - CNRS, Vanduvre-ls-Nancy, France

  • Venue:
  • Proceedings of the nineteenth annual symposium on Computational geometry
  • Year:
  • 2003

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Abstract

In this paper, we present the first exact, robust and practical method for computing an explicit representation of the intersection of two arbitrary quadrics whose coefficients are rational. Combining results from the theory of quadratic forms, linear algebra and number theory, we show how to obtain parametric intersection curves that are near-optimal in the number and depth of radicals involved.