MODULES WITH REDUCIBLE COMPLEXITY, II

被引:2
作者
Bergh, Petter Andreas [1 ]
机构
[1] Math Inst, Oxford OX1 3LB, England
关键词
Complete intersections; Complexity; Vanishing of cohomology; SUPPORT VARIETIES; COMPLETE-INTERSECTIONS; LOCAL-RINGS; COHOMOLOGY; DIMENSION;
D O I
10.1080/00927870802210084
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We continue studying the class of modules having reducible complexity over a local ring. In particular, a method is provided for computing an upper bound of the complexity of such a module, in terms of vanishing of certain cohomology modules. We then specialize to complete intersections, which are precisely the rings over which all modules have finite complexity.
引用
收藏
页码:1908 / 1920
页数:13
相关论文
共 15 条
[1]   REPRESENTATIONS, RESOLUTIONS AND QUILLEN DIMENSION THEOREM [J].
ALPERIN, JL ;
EVENS, L .
JOURNAL OF PURE AND APPLIED ALGEBRA, 1981, 22 (01) :1-9
[2]  
Avramov L.L., 1989, Math. Sci. Res. Inst. Publ., V15, P33, DOI DOI 10.1007/978-1-4612-3660-3_3
[3]   Support varieties and cohomology over complete intersections [J].
Avramov, LL ;
Buchweitz, RO .
INVENTIONES MATHEMATICAE, 2000, 142 (02) :285-318
[4]   MODULES OF FINITE VIRTUAL PROJECTIVE DIMENSION [J].
AVRAMOV, LL .
INVENTIONES MATHEMATICAE, 1989, 96 (01) :71-101
[5]  
AVRAMOV LL, 1997, PUBL MATH IHES, V86, P67
[6]  
Benson D. J., 1991, Representations and cohomology. II, V31
[7]  
Bergh P.A., 2006, Colloq. Math., V104, P169, DOI DOI 10.4064/CM104-2-2
[8]   On support varieties for modules over complete intersections [J].
Bergh, Petter Andreas .
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, 2007, 135 (12) :3795-3803
[9]   On the vanishing of (co)homology over local rings [J].
Bergh, Petter Andreas .
JOURNAL OF PURE AND APPLIED ALGEBRA, 2008, 212 (01) :262-270
[10]   Modules with reducible complexity [J].
Bergh, Petter Andreas .
JOURNAL OF ALGEBRA, 2007, 310 (01) :132-147