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arXiv 0705.2495math.DG
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广义复结构和广义Kahler结构的形变

Deformations of generalized complex and generalized Kahler structures

Ryushi Goto

摘要:

本文得到了具有一个纯旋量的广义Kahler结构在广义复结构小变形下的稳定性定理。(This类似于Kodaira-Spencer的Kahler流形的稳定性定理。将稳定性定理应用到一类紧致Kahler流形上,得到了Fano曲面和复曲面上的非平凡广义Kahler结构,这类流形允许广义复流形的变形.特别地,我们证明了Kahler流形上的全纯Poisson结构引起广义Kahler结构的变形。

英文摘要:

In this paper we obtain a stability theorem of generalized Kahler structures with one pure spinor under small deformations of generalized complex structures. (This is analogous to the stability theorem of Kahler manifolds by Kodaira-Spencer.) We apply the stability theorem to a class of compact Kahler manifolds which admits deformations to generalized complex manifolds and obtain non-trivial generalized Kahler structures on Fano surfaces and toric Kahler manifolds. In particular, we show that holomorphic Poisson structures on a Kahler manifold induce deformations of generalized Kahler structures.

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