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arXiv 1801.09641math.DGmath.AGmath.SG
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Bott流形的Kähler几何

The Kähler geometry of Bott manifolds

Charles P. Boyer, David M. J. Calderbank, Christina W. Tønnesen-Friedman

摘要:

我们研究了阶n Bott流形的Kähler几何,它可以看作是Hirzebruch曲面的$n$维推广.我们证明,使用一个简单的归纳论证和广义Calabi建设[ACGT 04,ACGT 11],任何阶段n Bott流形$M_n$承认一个极值Kähler度量。我们还给出了$M_n$允许常数数量曲率Kähler度量的必要条件.我们得到更精确的结果阶段3博特流形,特别是包括一些有趣的关系与c-投射几何和一些明确的例子几乎凯勒结构。为了将这些结果的背景下,我们审查和发展的拓扑结构,复杂的几何和辛几何的Bott流形。特别地,我们研究了Kähler锥,自同构群和Fano条件。我们还涉及的共轭类的最大环面的辛同胚群的数量的双全同胚类兼容的辛结构。

英文摘要:

We study the Kähler geometry of stage n Bott manifolds, which can be viewed as $n$-dimensional generalizations of Hirzebruch surfaces. We show, using a simple induction argument and the generalized Calabi construction from [ACGT04,ACGT11], that any stage n Bott manifold $M_n$ admits an extremal Kähler metric. We also give necessary conditions for $M_n$ to admit a constant scalar curvature Kähler metric. We obtain more precise results for stage 3 Bott manifolds, including in particular some interesting relations with c-projective geometry and some explicit examples of almost Kähler structures. To place these results in context, we review and develop the topology, complex geometry and symplectic geometry of Bott manifolds. In particular, we study the Kähler cone, the automorphism group and the Fano condition. We also relate the number of conjugacy classes of maximal tori in the symplectomorphism group to the number of biholomorphism classes compatible with the symplectic structure.

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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