Clifford Indices for Vector Bundles on Curves
Clifford Indices for Vector Bundles on Curves
复制标题
曲线上向量束的 Clifford 指数
DOI:
10.1007/978-3-0346-0288-4_6
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发表时间:
2008
期刊:
影响因子:
--
通讯作者:
P. Newstead
中科院分区:
文献类型:
--
作者:
H. Lange;P. Newstead
For smooth projective curves of genus g ≥ 4, the Clifford index is an important invariant which provides a bound for the dimension of the space of sections of a line bundle. This is the first step in distinguishing curves of the same genus. In this paper we generalise this to introduce Clifford indices for semistable vector bundles on curves. We study these invariants, giving some basic properties and carrying out some computations for small ranks and for general and some special curves. For curves whose classical Clifford index is two, we compute all values of our new Clifford indices.