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arXiv 2001.05619math.AGmath.SG
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相对对数上同调与最大次Nambu结构

Relative Logarithmic Cohomology and Nambu Structures of Maximal Degree

Konstantinos Kourliouros

摘要:

我们提出了局部分类结果的孤立奇点的功能有关的Nambu结构(多向量场)的最大程度,在其退化超曲面的光滑点的邻域。这些结果依赖于对数版本的Brieskorn-Schmidtiani定理,该定理保证了相应变形模的有限性和自由性。这涉及的功能模的分类问题与积分的对数形式沿消失的循环补充的米尔诺纤维的限制功能的退化超曲面的Nambu结构,内部的米尔诺纤维的功能本身。

英文摘要:

We present local classification results for isolated singularities of functions with respect to a Nambu structure (multi-vector field) of maximal degree, in a neighbourhood of a smooth point of its degeneracy hypersurface. The results depend on a logarithmic version of the Brieskorn-Sebastiani theorem, which guarantees the finiteness and freeness of the corresponding deformation module. This relates the functional moduli of the classification problem with the integrals of logarithmic forms along the vanishing cycles of the complement of the Milnor fibers of the restriction of the function on the degeneracy hypersurface of the Nambu structure, inside the Milnor fibers of the function itself.

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