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arXiv 2102.03665math.GTmath.SG
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广义Casson不变量的一个辛公式

A symplectic formula of generalized Casson invariants

Shaoyun Bai

摘要:

设Y是一个整数同调3-球面,Taubes证明了当结构群为SU(2)时,Y上扰动Chern-Simons泛函的不可约临界轨道数(带符号)等于与Heegaard分裂有关的两个特征簇的代数相交数. Taubes的结果建立了规范理论和卡森不变量之间的关系。本文证明了SU(n)广义Casson不变量的一个类似的识别结果。作为特例,我们证明了通过选取适当的拉格朗日子流形的相交数,可以等价地计算出Boden-Herald的SU(3)Casson不变量.

英文摘要:

Suppose Y is an integer homology 3-sphere, Taubes proved that the number of irreducible critical orbits of the perturbed Chern-Simons functional on Y, counted with signs, is equal to the algebraic intersection number of two character varieties associated with Heegaard splittings when the structure group is SU(2). Taubes' result established a relationship between gauge theory and the Casson invariant. This article proves an analogous identification result for SU(n) generalized Casson invariants. As a special case, we show that the SU(3) Casson invariant of Boden-Herald can be equivalently calculated by taking an appropriate intersection number of Lagrangian submanifolds.

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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