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arXiv 0709.1708math.GTmath.SG
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4-流形的辛对称性

Symplectic symmetries of 4-manifolds

Weimin Chen, Slawomir Kwasik

摘要:

研究了有限群$G$在光滑四维流形上的辛作用.中心的新思想是使用$G$ -等变的塞伯格-威滕-陶贝斯理论在研究这些对称的不动点集的结构。本文的主要结果是用$c_1^2=0$刻画了极小辛4-流形上素数阶辛循环作用的不动点集结构(及其周围作用).与局部线性拓扑作用的情况下,这个结果进行了比较。作为这些考虑的一个应用,许多这样的行动上的一大类4-流形的平凡性建立。特别是,我们显示平凡的同调平凡辛对称的$K3$表面(在类比与全纯自同构)。各种例子和评论说明我们的考虑也包括在内。

英文摘要:

A study of symplectic actions of a finite group $G$ on smooth 4-manifolds is initiated. The central new idea is the use of $G$-equivariant Seiberg-Witten-Taubes theory in studying the structure of the fixed-point set of these symmetries. The main result in this paper is a complete description of the fixed-point set structure (and the action around it) of a symplectic cyclic action of prime order on a minimal symplectic 4-manifold with $c_1^2=0$. Comparison of this result with the case of locally linear topological actions is made. As an application of these considerations, the triviality of many such actions on a large class of 4-manifolds is established. In particular, we show the triviality of homologically trivial symplectic symmetries of a $K3$ surface (in analogy with holomorphic automorphisms). Various examples and comments illustrating our considerations are also included.

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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