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arXiv 1607.01748math.SG
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$b^m$ -辛曲面与Nambu结构的等变分类

Equivariant classification of $b^m$-symplectic surfaces and Nambu structures

Eva Miranda, Arnau Planas

摘要:

在本文中,我们将[S]中的分类方案扩展到$b^m$ -辛曲面,更一般地,将$b^m$ -Nambu结构扩展到等变设置。当紧群是一个可定向覆盖的甲板变换群时,这就给出了这些对象对于非可定向曲面的分类。本文还包括配方,以建设$b^m$ -辛结构的表面。这种构造的可行性取决于相关图的可定向性和可着色性。[GMW]中的去奇异化技术被重新访问的表面和与此分类方案的兼容性进行了分析。我们将[Mt]中用于分类可定向流形上最高阶稳定Nambu结构的策略改写为使用$b^m$ -上同调语言分类$b^m$ -Nambu结构(不一定是定向的)。最后给出了最高次$b^m$ -Nambu结构的一个等变分类定理.

英文摘要:

In this paper we extend the classification scheme in [S] for $b^m$-symplectic surfaces and, more generally, $b^m$-Nambu structures to the equivariant setting. When the compact group is the group of deck-transformations of an orientable covering, this yields the classification of these objects for non-orientable surfaces. The paper also includes recipes to construct $b^m$-symplectic structures on surfaces. Feasibility of such constructions depends on orientability and on the colorability of an associated graph. The desingularization technique in [GMW] is revisited for surfaces and the compatibility with this classification scheme is analyzed. We recast the strategy used in [Mt] to classify stable Nambu structures of top degree on orientable manifolds to classify $b^m$-Nambu structures (not necessarily oriented) using the language of $b^m$-cohomology. The paper ends up with an equivariant classification theorem of $b^m$-Nambu structures of top degree.

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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