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arXiv 0811.2746math.AGhep-thmath.CV
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Gerbes与复环面的全纯Brauer群

Gerbes and the Holomorphic Brauer Group of Complex Tori

Oren Ben-Bassat

摘要:

本文的目的是以类似于经典线丛理论的方式发展复环面上的全纯格线理论。与以往的研究相比,我们不限于这些gerbes扭转或拓扑平凡的情况下。我们给出了复环面上所有全纯格的Appell-Humbert型描述。这给出了全纯gerbe的每个等价类的一个明确的、简单的、上循环代表(因此也是gerbe)。我们还证明了公共基上四个空间的纤维积上的格贝是平凡的,只要它在限制到这四个空间中的任意三个时是平凡的。构造了复环面上格伯的精细模栈。这涉及到建设的一个“庞加莱”gerbe发挥的作用类似的作用庞加莱丛的情况下,线丛。

英文摘要:

The purpose of this paper is to develop the theory of holomorphic gerbes on complex tori in a manner analogous to the classical theory for line bundles. In contrast to past studies on this subject, we do not restrict to the case where these gerbes are torsion or topologically trivial. We give an Appell-Humbert type description of all holomorphic gerbes on complex tori. This gives an explicit, simple, cocycle representative (and hence gerbe) for each equivalence class of holomorphic gerbes. We also prove that a gerbe on the fiber product of four spaces over a common base is trivial as long as it is trivial upon restriction to any three out of the four spaces. A fine moduli stack for gerbes on complex tori is constructed. This involves the construction of a 'Poincaré' gerbe which plays a role analogous to the role of the Poincaré bundle in the case of line bundles.

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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