Artin level modules

JOURNAL OF ALGEBRA

卷:226

Article

Boij, M

关键词: graded algebra;    graded module;    level ring;    level algebra;    Gorenstein algebra;    Cohen-Macaulay ring;    compressed algebra;    Hilbert function;    Betti numbers;    unimodality;    minimal resolution conjecture;    canonical module;    Matlis duality;   

DOI  :  10.1006/jabr.1999.8185

来源: Elsevier

【 摘 要 】

We introduce level modules and show that these form a natural class of modules over a polynomial ring. We prove that there exist compressed level modules, i.e., level modules with the expected maximal Hilbert function, given socle type and the number of generators. We also show how to use the theory of level modules to compute minimal free resolutions of the coordinate ring of points from the back, which reveals new examples where random sets of points fail to satisfy the minimal resolution conjecture. (C) 2000 Academic Press.

【 授权许可】

Free