On the geometry of Hermitian one-point codes
On the geometry of Hermitian one-point codes
复制标题
厄米特单点码的几何
DOI:
10.1016/j.jalgebra.2013.08.038
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
A. Ravagnani
中科院分区:
文献类型:
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作者:
E. Ballico;A. Ravagnani
Here we describe the algebraic geometry of one-point codes from the Hermitian curve. In particular, we employ zero-dimensional schemes in the plane to characterize the minimum-weight codewords of their dual codes, providing explicit formulas for their number. We discuss also some natural improvements of the duals of Hermitian one-point codes by means of geometric arguments. Finally, some cohomological tools are developed to characterize the small-weight codewords of such codes.