The Inverse Gröbner Basis Problem in Codimension Two

نویسنده

  • Amelia Taylor
چکیده

The inverse Gröbner basis problem is to find the ideals that have a given monomial ideal as its initial ideal. We consider the problem of finding when the given monomial ideal is the initial ideal of a prime ideal. Kalkbrenner and Sturmfels (1995), in Theorem 1, prove that the radical of the initial ideal of a prime ideal is equi-dimensional and connected in codimension one or equivalently, the initial complex of a prime ideal is pure and strongly connected. They ask if these necessary conditions are sufficient. Dalbec (1998), in Theorem 2, proved that if I is an ideal generated by all the degree d square-free monomials in n variables, then there exists a prime ideal P such that the radical of the initial ideal of P is I. The ideals he considers are square-free, the generators have the same degree and their quotient is Cohen–Macaulay. We prove the following main theorem that establishes that the ring being Cohen–Macaulay is sufficient for ideals of codimension two.

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عنوان ژورنال:
  • J. Symb. Comput.

دوره 33  شماره 

صفحات  -

تاریخ انتشار 2002