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arXiv 1602.02076math.DGmath.SG
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广义复几何中的吹胀

Blow-ups in generalized complex geometry

Michael Bailey, Gil R. Cavalcanti, Joey van der Leer Duran

AI总结:

本文研究广义复几何中的吹胀,通过引入全纯理想,确定了适合吹胀的广义Poisson子流形与横截面,并给出了相应吹胀为广义复结构的充要条件及构造方法。

摘要:

我们研究广义复几何中的吹胀。为此我们引入了全纯理想的概念,它允许在光滑流形范畴中定义吹胀。接着我们研究哪些广义复子流形适合进行吹胀。自然出现两类:广义Poisson子流形和广义Poisson横截面,即在横截方向上分别呈现复结构和辛结构的子流形。我们证明广义Poisson子流形具有典范全纯理想,并给出相应吹胀为广义复结构的充要条件。对于广义Poisson横截面,我们给出子流形邻域的正规形式,并借此定义广义复吹胀,该结构在相差形变的意义下与选择无关。

英文摘要:

We study blow-ups in generalized complex geometry. To that end we introduce the concept of holomorphic ideal, which allows one to define a blow-up in the category of smooth manifolds. We then investigate which generalized complex submanifolds are suitable for blowing up. Two classes naturally appear; generalized Poisson submanifolds and generalized Poisson transversals, submanifolds which look complex, respectively symplectic in transverse directions. We show that generalized Poisson submanifolds carry a canonical holomorphic ideal and give a necessary and sufficient condition for the corresponding blow-up to be generalized complex. For the generalized Poisson transversals we give a normal form for a neighborhood of the submanifold, and use that to define a generalized complex blow-up, which is up to deformation independent of choices.

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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