齐次Morrey-Herz空间上粗糙核高阶交换子的有界性

在齐次Morrey-Herz空间上建立了由粗糙核算子T与BMO(R~n)函数生成的高阶交换子T_(b,m)的有界性.同时对Hardy-Littlewood极大粗糙算子和相应的分数次极大粗糙算子所生成的高阶交换子也得到了相应的结果.     

无界域上一类高阶奇异T算子的H?lder连续性及其应用

首先定义了R~n上一类高阶奇异T算子,然后将该算子分为两部分分别讨论得到了该算子在R~n上的H?lder连续性,最后给出了这个算子的广义导数并通过导数和正则函数的性质给出了高维空间中的一类广义H_n方程组的解.     

乘子算子及其交换子在Morrey空间上的有界性

证明了乘子算子(M_p~q(R~n),Lip(β-n/q))的有界性和(M_p~q(R~n),BMO(R~n))的有界性.还得到乘子算子及其交换子在广义Morrey空问Lp,L_(p,φ)(R~n)上的有界性.     

Herz型空间上的分数次Hardy算子的交换子(英文)

本文主要对分数次Hardy算子和Lipschitz函数产生的交换子进行研究,得到了它在一类Herz型和Morrey-Herz型空间上的有界性.进一步还讨论了高阶交换子在这类空间上的有界性.     

齐次Morrey-Herz空间上交换子的有界性

本文研究了高阶交换子的有界性, 利用截断算子方法和函数分解技术, 在齐次Morrey-Herz空间上, 得到了由次线性算子与BMO函数生成的高阶交换子的有界性以及卷积类算子高阶交换子的有界性.     

极大算子的BMO有界性

<正> 在文[1]中Hardy-Littlewoud极大算子的BMO有界性被证明.BMO有界性不能由点控制直接传递,且上文的方法不能用于某些极大算子.本文给出的方法能导出较广一类极大算子(其中包括奇异积分极大算子)的BMO有界性. 记BMO(R~n)为BMO,Q记某一边平行于坐标轴的方体,S记球,S(t,y)记中心为     

与强奇异Calderón-Zygmund算子相关的Toeplitz型算子

研究与强奇异Calderón-Zygmund算子和Lipschitz函数6∈ΛA_(βO)(R~n)相关的Toeplitz型算子T_b(f)从L~p(R~n)到L~q(R~n)的有界性和L~p(R~n)到Triebel- Lizorkin空间F(_p~(βO,∞))的有界性,1／q=1／p-βO／n．得到广义Toeplitz型算子Θ(_(αO)~b)是L~p(R~n)到L~q(R~n)有界的,1／q=1／p-(αO βO)／n．上述结果包含相应交换子的有界性．同时还得到与强奇异Calderón-Zygmund算子和BMO函数b相关的Toeplitz型算子T_b(f)的L~p(R~n)有界性,1＜p＜∞.     

一类Schrdinger型算子在关于非负位势的变指数Morrey空间上的有界性（英文）

本文考虑了一类Schr?dinger型算子和其交换子的有界性问题.利用其在L~p空有界性间上的,获得了一类Schr?dinger型算子和其交换子在变指数Morrey空间上的有界性.     

一类分数次次线性算子及其交换子在齐型空间上的弱Morrey-Herz空间上的有界性

本文研究了一类次线性算子及其交换子在齐型空间上的弱有界性的问题.利用齐型空间的基本性质以及给出的一类次线性算子及其分别与BMO函数,Lipschitz函数生成的交换子在L~p(X)上的弱有界性,证明了其在齐型空间上Morrey-Herz空间中的弱有界性.推广了该类算子在Morrey-Herz空间中的强有界性这一结果.     

一类Schrödinger型算子在关于非负位势的变指数Morrey空间上的有界性

本文考虑了一类Schrödinger型算子和其交换子的有界性问题.利用其在Lp空有界性间上的,获得了一类Schrödinger型算子和其交换子在变指数Morrey空间上的有界性.     

Estimates of stability of characterization of additive types of distributions

An estimate of stability of characterization of distribution types is obtained for the case of additive types. Under some conditions, the estimate has the order ε^1/3L(ε), where L(ε) is a slowly varying function. Proceedings of the Seminar on Stability Problems for Stochastic Models, Moscow, Russia, 1996, Part I.     

Study of the blow-up of solutions of systems of equations of hydrodynamic type

Mathematical Notes - We study the initial boundary-value problem for three-dimensional systems of equations of pseudoparabolic type. The system is similar to the Oskolkov system, but differs from...     

一类完全正则半群簇子簇格的性质

本文研究了完全正则半群簇的子簇格［Ｖ＋∩ＰＶ，Ｖ＋∩ＰＶ］的某些格运算性质，我们证明了簇Ｖ＋∩ＰＶ可分解为Ｖ与Ｖ＋∩ＰＶ的并；对任意完全正则半群簇Ｗ，有Ｗ∩（Ｖ∨Ｖ＋∩ＰＶ）＝（Ｗ∩Ｖ）∨（Ｗ∩Ｖ＋∩ＰＶ）．特别地，我们得到了等式Ｖ＋∩ＰＶ＝Ｖ成立的若干条件．     

Characterization of types of asymptotic discernibility of families of hypotheses

We give a characterization of the types of asymptotic discernibility of families of hypotheses in the case of hypothetical measures that are not, in general, mutually absolutely continuous. The case when the logarithm of the likelihood ratio admits an asymptotic expansion of the type of an expansion with local asymptotic normality is examined in detail. Examples are studied.Translated fromTeoriya Sluchainykh Protsessov, Vol. 15, pp. 64–71, 1987.     

Distribution of types of symmetry of tensors of high degree

The asymptotic distribution of tensors of degree N in symmetry types is studied in this paper.Translated from Zapiski Nauchnykh Seminarov Leningradskogo Otdeleniya Matematicheskogo Instituta im. V. A. Steklova AN SSSR, Vol. 155, pp. 181–186, 1986.     

Birational aspects of the geometry of Varieties of Sums of Powers

Varieties of Sums of Powers describe the additive decompositions of a homogeneous polynomial into powers of linear forms. The study of these varieties dates back to Sylvester and Hilbert, but only few of them, for special degrees and number of variables, are concretely identified. In this paper we aim to understand a general birational behavior of VSP. To do this we birationally embed these varieties into Grassmannians and prove the rational connectedness of many VSP in arbitrary degrees and number of variables.     

Estimate of growth of Lebesgue functions of linear methods of summation

Sufficient conditions are obtained in terms of matrix elements for the boundedness of Lebesgue functions of linear methods of summation of expansions in orthogonal systems of polynomial type.Translated from Matematicheskie Zametki, Vol. 6, No. 3, pp. 277–286, September, 1969.