Bihermitian surfaces with odd first Betti number

Bihermitian surfaces with odd first Betti number
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具有奇数第一个 Betti 数的 Bihermitian 曲面

DOI:
10.1007/s002090100266
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发表时间:
2001
影响因子:
0.8
通讯作者:
V. Apostolov
V. Apostolov
中科院分区:
数学2区
文献类型:
--
作者:
V. Apostolov

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抽象的。研究了紧致双厄米曲面,即具有两个不同相容复结构的紧致定向共形四流形。它表明,如果第一贝蒂数是奇数,然后,对于任何复杂的结构,这样的流形属于第七类的恩里克斯-小平分类。此外,它必须是一个特殊的Hopf或井上曲面(在强双厄米的情况下),或通过爆破一个极小的VII类曲面的曲线(在非强双厄米的情况下)。
Abstract. Compact bihermitian surfaces are considered, that is, compact, oriented, conformal four-manifolds admitting two distinct compatible complex structures. It is shown that if the first Betti number is odd then, with respect to either complex structure, such a manifold belongs to Class VII of the Enriques-Kodaira classification. Moreover, it must be either a special Hopf or an Inoue surface (in the strongly bihermitian case), or obtained by blowing-up a minimal class VII surface with curves (in the non-strongly bihermitian case).