The Inverse Gröbner Basis Problem in Codimension Two
نویسنده
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.
منابع مشابه
Inverse Gröbner Basis Problem in Codimension Two
Generic linkage is used to compute a prime ideal such that the radical of the initial ideal of the prime ideal is equal to the radical of a given codimension two monomial ideal that has a Cohen-Macaulay quotient ring.
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ورودعنوان ژورنال:
- J. Symb. Comput.
دوره 33 شماره
صفحات -
تاریخ انتشار 2002