Connections on modules over quasi-homogeneous plane curves

被引:1
|
作者
Eriksen, Eivind [1 ]
机构
[1] Oslo Univ Coll, Fac Engn, N-0130 Oslo, Norway
关键词
connections on modules; quasi-homogeneous plane curve singularities; simple curve singularities;
D O I
10.1080/00927870802110797
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let k be an algebraically closed field of characteristic 0, and let A=k[x, y]/(f) be a quasi-homogeneous plane curve. We show that for any graded torsion free A-module M, there exists a natural graded integrable connection, i.e., a graded A-linear homomorphism : Der(k)(A) --> End(k)(M), that satisfies the derivation property and preserves the Lie product. In particular, a torsion free module N over the complete local ring B = (A) over cap admits a natural integrable connection if A is a simple curve singularity, or if A is irreducible and N is a gradable module.
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页码:3032 / 3041
页数:10
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