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arXiv 1407.0490math.AG
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关于无穷远点有一个位置的曲线

On curves with one place at infinity

Abdallah Assi, Pedro A. García-Sánchez

摘要:

设$f$是一条平面曲线。给出了一个基于Abhyankar近似根的方法来判定它在无穷远处是否有单宿位,如果有单宿位,则构造它的相关$δ$ -序列,从而构造它的值半群.对于固定的亏格(等价于Frobenius数),我们构造了所有生成具有这个亏格的数值半群的$δ$ -序列.对于一个$δ$ -序列,我们提出了一个程序来构建所有的曲线有这个相关的序列。我们还研究了这类曲线在平面上的嵌入。特别地,我们证明了多项式曲线可能没有唯一的嵌入。

英文摘要:

Let $f$ be a plane curve. We give a procedure based on Abhyankar's approximate roots to detect if it has a single place at infinity, and if so construct its associated $δ$-sequence, and consequently its value semigroup. Also for fixed genus (equivalently Frobenius number) we construct all $δ$-sequences generating numerical semigroups with this given genus. For a $δ$-sequence we present a procedure to construct all curves having this associated sequence. We also study the embeddings of such curves in the plane. In particular, we prove that polynomial curves might not have a unique embedding.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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