第三类华罗庚域的Bergman核函数

本文主要是计算第三类华罗庚域的Bergman核函数的显式表达式.由于华罗庚域既不是齐性域又不是Reinhardt域,故以往求Bergman核函数的方法都行不通.本文用新的方法进行计算.关键之处有两点一是给出第三类华罗庚域的全纯自同构群,群中每一元素将形为(W,Z0)的内点映为点(W*,0);二是引进了semi-Reinhardt的概念并求出了其完备标准正交函数系.     

第四类华罗庚域的Bergman核函数

本文给出了第四类华罗庚域H EIV上的Bergman核函数,全纯自同构群以 及semi—Reinhardt域上的完备标准正交函数系.     

广义例外华罗庚域的Bergman核函数

计算出两类广义例外华罗庚域的Bergman核函数的显式表达式. 同时利用Appell的多变量的超几何函数给出了例外华罗庚域的Bergman核函数在边界点附近的渐近性质.     

华罗庚域的Bergman核函数

给出了4类华罗庚域的Bergman核函数的显表达式.其关键之处有两点：一是给出了它们的全纯自同构群;二是引进了semi-Reinhardt域,并给出了它们的完备标准正交函数系.在此基础上,给出了它们的Bergman核函数的显表达式,这也是方法上的创新之处.     

一类Reinhardt域的Bergman核函数零点的边界性质

本文研究了形如E_p={(ω,z)∈C~(1+n):|ω|~(2p)+‖z‖~21}p∈R~+的一类Reinhardt域,并针对非陆启铿域E_p探讨其Bergman核函数零点的边界性质,即给出了域E_p×E_p的不同类型边界的邻域内是否存在Bergman核函数零点的判别方法.     

第三类超Cartan域的Bergman核函数

显式给出了第三类超Cartan域的Bergman核函数及其全纯自同构群。     

关于Reinhardt域(一)

本文讨论了Reinhardt域,当α_(?)不全为1时为弱拟凸域,首先给出了其Bergman核的渐近展开,指出了核函数的奇性与Levi形式的退化关系,其次指出A.Bonanie与N.Lohone给出的Szeg核是错误的,并给出了Szeg核的估计,最后讨论了一类域的几何性质,给出了Bergman度量,Ricci曲率及无向曲率的明确表达式,显示了强拟凸点与弱拟凸点的几何性质的不同。     

关于Reinhardt域(一)

本文讨论了 Reinhardt 域 D={z∈~n:<1},1≥α_j>0,j=1,…,n.当α,不全为1时为弱拟凸域.首先给出了其 Bergman 核的渐近展开,指出了核函数的奇性与 Levi 形式的退化关系.其次指出 A.Bonanie 与 N.Lohone 给出的 Szeg核是错误的,并给出了 Szeg核的估计.最后讨论了一类域的几何性质,给出了 Bergman 度量,Rlcci 曲率及无向曲率的明确表达式,显示了强拟凸点与弱拟凸点的几何性质的不同.     

第四类超Cartan域的Bergman核函数

显式给出了第四类超Cartan域的Bergman核函数及其全纯自同构群．     

第二类超Cartan域的Bergman核函数

本文给出了第二类超Cartan域的Bergman核函数的显式及其全纯自同构群.     

有界域的Bergman核函数显式表示的最新进展

对多维复数空间的有界域，如何求出它的Bergman核函数的显表达式，是多复变研究中的一个重要方向。本文综述了迄今为止的所有重要结果以及方法上的进展，特别对新近引进的华罗域，综述了它们的Bergman核函数的显表达式及其计算方法上的创新。     

The Bergman kernel functions on Hua domains

We get the Bergman kernel functions in explicit formulas on four types of Hua domain.There are two key steps: First, we give the holomorphic automorphism groups of four types of Hua domain; second, we introduce the concept of semi-Reinhardt domain and give their complete orthonormal systems. Based on these two aspects we obtain the Bergman kernel function in explicit formulas on Hua domains.     

Bergman kernel on generalized exceptional hua domain

We have computed the Bergman kernel functions explicitly for two types of generalized exceptional Hua domains, and also studied the asymptotic behavior of the Bergman kernel function of exceptional Hua domain near boundary points, based on Appell's multivariable hypergeometric function.     

Sobolev spaces on bounded symmetric domains

We obtain a formula for the Sobolev inner product in standard weighted Bergman spaces of holomorphic functions on a bounded symmetric domain in terms of the Peter–Weyl components in the Hua–Schmidt decomposition, and use it to clarify the relationship between the analytic continuation of these standard weighted Bergman spaces and the Sobolev spaces on bounded symmetric domains.     

Lu Qi-Keng conjectue and Hua domain

The first part of this paper discusses the motivation for the Lu Qi-Keng conjecture and the results about the presence or the absence of zeroes of the Bergman kernel function of a bounded domain in C~n.Its second part summarizes the main results on the Hua domains,such as the explicit Bergman kernel function,the comparison theorem for the invariant metrics,the explicit complete Einstein-K(?)hler metrics,the equivalence between the Einstein-K(?)hler metric and the Bergman metric,etc.     

Caftan-Hartogs域上K(a)hler-Einstein度量与Bergman度量的等价

本文研究的是华罗庚域的特殊类型第二类Cartan-Hartogs域的不变Bergman度量与Kahler-Einstein度量的等价问题.引入一种与Bergman度量等价的新的完备的Kahler度量ωgλ,其Ricci曲率和全纯截取率具有负的上下界.然后应用丘成桐对Schwarz引理的推广证明ωgλ等价于Kahler-Einstein度量,从而得到了Bergman度量与Khhler-Einstein度量的等价,即丘成桐关于度量等价的猜想在第二类Cartan-Hartogs域上成立.     

New classes of domains with explicit Bergman kernel

We introduce two classes of egg type domains, built on general bounded sym-metric domains, for which we obtain the Bergman kernel in explicit formulas. As an aux-iliary tool, we compute the integral of complex powers of the generic norm on a boundedsymmetric domains using the well-known integral of Selberg. This generalizes matrix in-tegrals of Hua and leads to a special polynomial with integer or half-integer coefficientsattached to each irreducible bounded symmetric domain.     

Bergman kernel function on the third Hua Construction

The Bergman kernel function for Hua Construction of the third type is given in an explicit formula.     

Bergman kernel function on the third Hua Construction

The Bergman kernel function for Hua Construction of the third type is given in an explicit formula.

     

Stability Analysis in Continuous and Discrete Time, using the Cayley Transform

For semigroups and for bounded operators we introduce the new notion of Bergman distance. Systems with a finite Bergman distance share the same stability properties, and the Bergman distance is preserved under the Cayley transform. This way, we get stability results in continuous and discrete time. As an example, we show that bounded perturbations lead to pairs of semigroups with finite Bergman distance. This is extended to a class of Desch–Schappacher perturbations.