Single Spot Ideals of Codimension 3 and Long Bourbaki Sequences
نویسنده
چکیده
Abstract. Let K be a field and S = K[x1, . . . , xn] be a polynomial ring. A single spot ideal I ⊂ S is a graded ideal whose local cohomology H m (S/I), i < dimS/I and m = (x1, . . . , xn), only has non-trivial value N , a finite length module, at i = depthS/I. We consider characterization of single spot ideals in terms of (long) Bourbaki sequences. The codimension 2 case has been fairly well investigated. In this paper, we focus on the codimension 3 case.
منابع مشابه
Existence of Homogeneous Ideals Fitting into Long Bourbaki Sequences
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