Effective tests for cyclotomic polynomials

  • R. J. Bradford
  • J. H. Davenport
Algorithmic Number Theory
Part of the Lecture Notes in Computer Science book series (LNCS, volume 358)


We present two efficient tests that determine if a given polynomial is cyclotomic, or is a product of cyclotomics. The first method uses the fact that all the roots of a cyclotomic polynomial are roots of unity, and the second the fact that the degree of a cyclotomic polynomial is a value of φ(n), for some n. We can also find the cyclotomic factors of any polynomial.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • R. J. Bradford
    • 1
  • J. H. Davenport
    • 1
  1. 1.School of Mathematical SciencesUniversity of BathClaverton DownEngland

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