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Towards the Robust Intersection of Implicit Quadrics
Abstract : We are interested in efficiently and robustly computing a parametric form of the intersection of two implicit quadrics with rational coefficients. Our method is similar in spirit to the general method introduced by J. Levin for computing an explicit representation of the intersection of two quadrics, but extends it in several directions. Combining results from the theory of quadratic forms, a projective formalism and new theorems characterizing the intersection of two quadratic surfaces, we show how to obtain parametric representations that are both ``simple'' (the size of the coefficients is small) and ``as rational as possible''.
https://hal.inria.fr/inria-00100878
Contributor : Sylvain Lazard <>
Submitted on : Tuesday, December 15, 2009 - 3:10:14 PM
Last modification on : Friday, February 26, 2021 - 3:28:06 PM
Long-term archiving on: : Tuesday, April 6, 2010 - 1:13:45 AM
Contributor : Sylvain Lazard <>
Submitted on : Tuesday, December 15, 2009 - 3:10:14 PM
Last modification on : Friday, February 26, 2021 - 3:28:06 PM
Long-term archiving on: : Tuesday, April 6, 2010 - 1:13:45 AM
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sheffield_09_2001.pdf
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