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Sign Determination

These routines various operations related to sign determination for polynomials.

  1. Syntax
    Matrix<int > det_sign(Polynomial p, List<Polynomial > qlist)
    Description
    Returns a Matrix of int 's encoding the signs of the polynomials in the the polynomial list qlist at the roots of the polynomial p.

  2. Syntax
    int diff_in_alternations(List<Polynomial > qlist)
    Description
    Returns the diference in sign alternations of the polynomials evaluated at tex2html_wrap_inline3770 and tex2html_wrap_inline3772 . The polynomials should have Field_element 's as coefficients, not other polynomials.


Ashu Rege
Fri May 9 17:57:21 PDT 1997