Numerical Algorithms

, Volume 4, Issue 1, pp 1–24 | Cite as

Computing the real roots of a polynomial by the exclusion algorithm

  • Jean-Pierre Dedieu
  • Jean-Claude Yakoubsohn


We describe a new algorithm for localizing the real roots of a polynomialP(x). This algorithm determines intervals on whichP(x) does not possess any root. The remainder set contains the real roots ofP(x) and can be arbitrarily small.


Exclusion polynomial, root 

Subject classification

AMS 26C10 65H05 12D10 


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Copyright information

© J.C. Baltzer A.G. Science Publishers 1993

Authors and Affiliations

  • Jean-Pierre Dedieu
    • 1
  • Jean-Claude Yakoubsohn
    • 1
  1. 1.Laboratoire d'Analyse NumériqueUniversité Paul SabatierToulouse CedexFrance

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