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arXiv 1609.09008math.AG
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Nash重数与最大重数的isolated points

Nash multiplicities and isolated points of maximum multiplicity

Beatriz Pascual-Escudero

摘要:

设$X$是定义在特征为零的域上的代数簇,$ξ\in \mathrm{\underline{Max}\; mult}(X)$是$X$的最大重数闭子集中的点.我们提供了一个标准,给出的弧,以确定是否$ξ$是孤立的$\mathrm{\underline{Max}\; mult}(X)$。更准确地说,我们使用的不变量的弧来自纳什多重序列的特点时,$ξ$是一个孤立的点在$\mathrm{\underline{Max}\; mult}(X)$。

英文摘要:

Let $X$ be an algebraic variety defined over a field of characteristic zero, and let $ξ\in \mathrm{\underline{Max}\; mult}(X)$ be a point in the closed subset of maximum multiplicity of $X$. We provide a criterion, given in terms of arcs, to determine whether $ξ$ is isolated in $\mathrm{\underline{Max}\; mult}(X)$. More precisely, we use invariants of arcs derived from the Nash multiplicity sequence to characterize when $ξ$ is an isolated point in $\mathrm{\underline{Max}\; mult}(X)$.

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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