The Geometry of Grauert Tubes and Complexification of Symmetric Spaces
نویسنده
چکیده
We study the canonical complexifications of non-compact Riemannian symmetric spaces by the Grauert tube construction. We determine the maximal such complexification, a domain already constructed by Akhiezer and Gindikin [1], and show that this domain is Stein. We also determine when invariant complexifications, including the maximal one, are Hermitian symmetric. This is expressed simply in terms of the ranks of the symmetric spaces involved.
منابع مشابه
Some Global Properties of Tubes
A Grauert tube, or adapted complex structure, gives a canonical complexification of a real analytic Riemannian manifold defined on a neighborhood of the zero section of the (co-)tangent bundle. Such a tube is called entire if it is defined on the whole tangent bundle of the real analytic Riemannian manifold M, g. Very few examples of such entire tubes are known, but a general statement has prov...
متن کاملSymplectic Geometry and the Uniqueness of Grauert tubes
Given a differentiable manifold M , it is always possible to find an almost complex structure J on TM with respect to which the zero-section is totally-real. In this paper we study a situation in which there is a canonical choice for a complex structure with this property, a canonical complexification of M . Suppose that (M, g) is a real-analytic Riemannian manifold of dimension n. Identify M w...
متن کاملOn Rigidity of Grauert Tubes
Given a real-analytic Riemannian manifold M there exists a canonical complex structure on part of its tangent bundle which turns leaves of the Riemannian foliation on TM into holomorphic curves. A Grauert tube over M of radius r, denoted as T rM , is the collection of tangent vectors of M of length less than r equipped with this canonical complex structure. We say the Grauert tube T rM is rigid...
متن کاملبررسی آزمایشگاهی و عددی حساسیت باربری محوری فشاری اعضای لولهای فولادی به ناراستیهای هندسی
In practice, steel tubulars lack a mathematically perfect cylindrical shape, due to non-uniformities introduced during the manufacturing process, construction methods, damages incurred in the transport. The imperfections might exist in the cross section and along the tubular member. Imperfections can greatly affect the behavior of tubular members. The work presented in this paper is perusing ef...
متن کاملA Geometry Preserving Kernel over Riemannian Manifolds
Abstract- Kernel trick and projection to tangent spaces are two choices for linearizing the data points lying on Riemannian manifolds. These approaches are used to provide the prerequisites for applying standard machine learning methods on Riemannian manifolds. Classical kernels implicitly project data to high dimensional feature space without considering the intrinsic geometry of data points. ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2003