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Structure of functional codes defined on non-degenerate Hermitian varieties

机译:在非退化厄米品种上定义的功能代码的结构

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We study the functional codes of order h defined by G. Lachaud on a non-degenerate Hermitian variety, by exhibiting a result on divisibility for all the weights of such codes. In the case where the functional code is defined by evaluating quadratic functions on the non-degenerate Hermitian surface, we list the first five weights, describe the geometrical structure of the corresponding quadrics and give a positive answer to a conjecture formulated on this question by Edoukou (2009) [8]. The paper ends with two conjectures. The first is about the divisibility of the weights in the functional codes. The second is about the minimum distance and the distribution of the codewords of the first 2h+1 weights.
机译:我们通过展示非此类厄密变种上的权重结果来研究由G. Lachaud定义的h阶功能码。在通过评估非退化厄米曲面上的二次函数来定义功能代码的情况下,我们列出前五个权重,描述相应二次方程的几何结构,并对由Edoukou对此问题提出的猜想给出肯定答案(2009)[8]。本文以两个猜想结束。首先是功能代码中权重的可除性。第二个是关于最小距离和前2h + 1个权重的码字的分布。

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