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arXiv 1503.08186math.DGmath.OA
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infinite dimensional辛群上的黎曼度量

Riemannian metrics on an infinite dimensional symplectic group

Manuel López Galván

摘要:

本文的目的是几何研究辛算子,这是一个扰动的身份由一个希尔伯特施密特算子。这个子群的辛群介绍了皮埃尔德拉哈普的经典著作的巴拿赫-李群。在本文中,我们将赋予切空间不同的黎曼度量。我们将使用酉群的极小曲线和正可逆算子来比较每种情况下测地线的长度。此外,我们还研究了辛群在测地距离下的完备性。

英文摘要:

The aim of this paper is the geometric study of the symplectic operators which are a perturbation of the identity by a Hilbert-Schmidt operator. This subgroup of the symplectic group was introduced in Pierre de la Harpe's classical book of Banach-Lie groups. Throughout this paper we will endow the tangent spaces with different Riemannian metrics. We will use the minimal curves of the unitary group and the positive invertible operators to compare the length of the geodesic curves in each case. Moreover we will study the completeness of the symplectic group with the geodesic distance.

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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