On the probability distribution of singular varieties of given corank

  • Authors:
  • Carlos Beltrán;Luis Miguel Pardo

  • Affiliations:
  • Dept. de Matemáticas, Estadística y Computación, F. de Ciencias, U. Cantabria, E39071 Santander, Spain;Dept. de Matemáticas, Estadística y Computación, F. de Ciencias, U. Cantabria, E39071 Santander, Spain

  • Venue:
  • Journal of Symbolic Computation
  • Year:
  • 2007

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Abstract

We exhibit sharp upper bounds for the probability distribution of the distance from a system of multivariate polynomial equations to the strata of all systems having a critical zero of given corank. We also prove sharp upper bounds for the probability distribution of the condition number of singular systems of multivariate polynomial equations. We finally state a new and sharp technique of the Geometry of Numbers. Using this technique we show that rational systems of multivariate polynomial equations are equidistributed with respect to singular systems having a critical zero of given corank.