Pure Weierstrass gaps from a quotient of the Hermitian curve

Pure Weierstrass gaps from a quotient of the Hermitian curve
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纯 Weierstrass 间隙与 Hermitian 曲线的商

DOI:
10.1016/j.ffa.2017.12.002
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发表时间:
2018-03
影响因子:
1
通讯作者:
Hu Chuangqiang
Hu Chuangqiang
中科院分区:
数学2区
文献类型:
--
作者:
Yang Shudi;Hu Chuangqiang

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本文利用库默扩张的一些结果,给出了Hermitian曲线的商上多个完全分歧处的纯Weierstrass间隙的一个算术特征,包括作为特例的Hermitian曲线.这些纯差距的基数明确调查。特别地,精确地确定了一对不同位置处的空位和纯空位的个数,这可以看作是马修斯(2001)在考虑Hermitian曲线的前提下的工作的推广.此外,一些具体的例子来说明我们的结果。
In this paper, by employing some results on Kummer extensions, we give an arithmetic characterization of pure Weierstrass gaps at many totally ramified places on a quotient of the Hermitian curve, including the well-studied Hermitian curve as a special case. The cardinality of these pure gaps is explicitly investigated. In particular, the numbers of gaps and pure gaps at a pair of distinct places are determined precisely, which can be regarded as an extension of the previous work by Matthews (2001) considered Hermitian curves. Additionally, some concrete examples are provided to illustrate our results.
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