1. Connections on Modules Over Quasi-Homogeneous Plane Curves.
- Author
-
Eriksen, Eivind
- Subjects
MODULES (Algebra) ,ALGEBRA ,RING theory ,FINITE groups ,MATHEMATICAL singularities ,ALGEBRAIC geometry - Abstract
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 ∇: Derk(A) → Endk(M), that satisfies the derivation property and preserves the Lie product. In particular, a torsion free module N over the complete local ring [image omitted] admits a natural integrable connection if A is a simple curve singularity, or if A is irreducible and N is a gradable module. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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