Isolating real roots of real polynomials

  • Authors:
  • Kurt Mehlhorn;Michael Sagraloff

  • Affiliations:
  • Max Planck Institute for Informatics, Saarbrücken, Germany;Max Planck Institute for Informatics, Saarbrücken, Germany

  • Venue:
  • Proceedings of the 2009 international symposium on Symbolic and algebraic computation
  • Year:
  • 2009

Quantified Score

Hi-index 0.00

Visualization

Abstract

We describe a bisection algorithm for root isolation of polynomials with real coefficients. It is assumed that the coefficients can be approximated with arbitrary precision; exact computation in the field of coefficients is not required. We refer to such coefficients as bitstream coefficients. The algorithm is deterministic and has almost the same asymptotic complexity as the randomized algorithm of [12]. We also discuss a partial extension to multiple roots.