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arXiv 2010.03445math.AG
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可定义集的切空间的极限

Limits of tangent spaces to definable sets

Si Tiep Dinh, Olivier Le Gal, Tien Son Pham

摘要:

我们研究了一组切线限制在一个给定的点,一组定义在任何O-最小的结构,其特征在于一组例外的射线在切线锥的设置在该点上,并调查沿这些射线的切线限制。给出了几个确定例外射线的准则。本文的主要结果推广到o-极小和任意维数的情形,并推广了O 'Shea-Wilson在$\mathbb R^3$中关于代数曲面的主要结果。

英文摘要:

We study the set of tangent limits at a given point to a set definable in any o-minimal structure by characterizing the set of exceptional rays in the tangent cone to the set at that point and investigating the set of tangent limits along these rays. Several criteria for determining exceptional rays will be given. The main results of the paper generalize, to the o-minimal setting and to arbitrary dimension, the main results of O'Shea--Wilson which deals with algebraic surfaces in $\mathbb R^3$.

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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