CH^2中齐性曲面的分类

CH^2中曲面M称为（局部）齐性的,如果对任何一对点p,q,存在变换σ∈U（1,2）把含p的一个邻域变为含q的领域,且把p变为q。本文给出CH^2中齐性曲面的完全分类。     

一类次线性算子在加权Herz型Hardy空间上的有界性

得到了新Ｃａｌｄｅｒｏｎ－Ｚｙｈｍｕｎｄ算子的Ｈ Ｋ_ｑ~（ａ,ｐ）（ｗ_１;Ｗ_２到Ｋ_ｑ~（ａ,ｐ）（ｗ_１;ｗ_２）有界性和Ｈ Ｋ_ｑ~（ａ,ｐ）（１;ｘ~β）到ＨＫ_ｑ~（ａ,ｐ）（１;ｘ~β）有界性．     

The Problem of Periodic Solution for Dynamical Systems（Ⅱ）

§１．　ＩｎｔｒｏｄｕｃｔｉｏｎＬｅｔ：Ｈ：Ｒｎ×Ｒｎ→ＲｂｅａｓｍｏｏｔｈＨａｍｉｌｔｏｎｆｕｎｃｔｉｏｎ（ｑ，ｐ）→Ｈ（ｑ，ｐ）Ｇ：Ｒｎ×Ｒｎ→Ｒ２ｎｂｅｓｍｏｏｔｈｏｐｅｒａｔｏｒ（ｑ，ｐ）→Ｇ（ｑ，ｐ）＝（ｇ１（ｑ，ｐ），…，ｇ２ｎ（ｑ，ｐ））．　　Ｗｅｄｅｆｉｎｅｔｗｏｓｐａｃｅｓ：Ｌ＝ｓｐａｎ｛ｇｉ，｛Ｈ，ｇｉ｝，｛Ｈ，｛Ｈ，ｇｉ｝｝，…，ｉ＝１，２，…，２ｎ｝ｄＬ（ｚ）＝｛ｄｆ（ｚ）｜ｆ∈Ｌ｝　ｚ∈Ｒｎ×Ｒｎ．Ｈｅｒｅ｛，｝ｉｓｐｏｉｓｓｏｎｂｒａｃｋｅｔ．Ｔｈｒｏｕｇｈｏｕｔｔｈ…     

关于有界对称域上的混合范数空间

本文研究了Ｃｎ中有界对称域Ω上的混合范数空间Ｈ（ｐ，ｑ，　）其中０＜ ｐ＜　，０＜ｑ＜　，　是正规函数，给出了Ω上全纯函数ｆ的分数导数ｆ［β］和 分数积分ｆ［β］属于（ｐ，ｑ，）的等价条件。应用这些结果，就两种情形０＜ｐ≤２， ０＜ｑ＜　和２≤ｐ＜，０＜ｑ＜ ，用全纯函数ｆ的展式中的系数，分别给出了 ｆ　Ｈ（ｐ，ｑ，）的必要条件和充分条件，并证明了多调和函数ｕ组成的混合范数空 间ｈ（ｐ，ｑ，）（０＜ｐ，ｑ＜　）是自共轭的．     

一类分数次算子在加权Herz型Hardy空间上的有界性

证明了一类分数次算子的ＨＫ_ｑ_１~（ａ,ｐ）（ｗ_１;ｗ_２~ｑ１）到Ｋ_ｑ_２~（ａ,ｐ）（ｗ_１;ｗ_２~ｑ２）和ＨＫ_ｑ_１~ａ_１~ｐ（１,ｘ~（βｑ_１）到Ｋ_ｑ_２~ａ_１~ｐ（１,ｘ~（βｑ_２）的有界性．     

分数次算子在加权Herz型空间上的有界性

本文证明了具有某种尺寸条件的Ｌ＾ｑ１到Ｌ＾ｑ２有界的分数次次线性算子是Ｋｑ１＾ａ，ｐ（ω１，ω２＾ｑ１）（或Ｋｑ１＾ｑ，ｐ）（ω１，ω２＾ｑ１）到Ｋｑ２＾ａ，ｐ（ω１，ω２＾ｑ２）（或Ｋｑ２＾ａ，ｐ（ω１，ω２＾ｑ２）有界的以及ＨＫｑ１＾ａｐ（ω１，ω２＾ｑ１）（或ＨＫｑ１＾ａｐ（ω１，ω２＾ｑ１）到Ｋｑ２＾ａｐ（ω１，ω２＾ｑ２）（或Ｋｑ２＾ａｐ（ω１，ω２＾ｑ２）有界的。     

Hardy型空间HA_0~（p，q，s）（R~n）及其应用

０＜ｐ≤１＜ｑ≤２，非负整数．本文通过定义一类特殊的中心（ｐ，ｑ，ｓ）－原子，引进了一类新的Ｈａｒｄｙ型空间Ｈ０（ｐ，ｑ，ｓ）（Ｒｎ）．并且建立了它的广义Ｌｕｓｉｎ面积特征．利用这个特征，还给出了一个内插定理，并且建立了一类乘子的有界性．     

H~（p，α）空间的Hardy－Littlewood定理

本文讨论了与Ｈ￣（ｐ，α）空间有关的乘子问题，得到为Ｈ￣（ｐ，α）到Ｈ￣（ｑ，α）或Ｈ￣（ｐ，α）到ｌ￣ｑ乘子的充分条件．作为应用，证明了一个关于Ｈ￣（ｐ，α）函数的Ｔａｙｌｏｒ系数的猜想．     

On (4p~2q~(2b),2p~2q~(2b)-pq~b,p~2q~(2b)-pq~b) Menon Difference Sets

Ｏｎ（４ｐ２ｑ２ｂ，２ｐ２ｑ２ｂ－ｐｑｂ，ｐ２ｑ２ｂ－ｐｑｂ）ＭｅｎｏｎＤｉｆｅｒｅｎｃｅＳｅｔｓＷａｎＺｈａｏｚｅ（万兆泽）（ＣｏｌｅｇｅｏｆＭａｔｈｅｍａｔｉｃＳｃｉｅｎｃｅ，ＰｅｋｉｎｇＵｎｉｖｅｒｓｉｔｙ，Ｂｅｉｊｉｎｇ，１００８７１）Ａｂｓ...     

混合范数空间中函数的Taylor系数

本文研究了混合范数空间Ｈ（ｐ，ｑ，ａ）中解析函数ｆ的Ｔａｙｌｏｒ系数，对０＜ｐ≤２，０＜ｑ＜∞，ａ＞０和２≤ｐ＜∞，０＜ｑ＜∞，ａ＞０两种情形，分别给出了ｆ属于Ｈ（ｐ，ｑ，ａ）的必要条件和充分条件。用上述结果我们还得到了几个关于混合范数空间的乘子定理，这些结果也推广了Ｈａｒｄｙ和Ｌｉｔｔｌｅｗｏｏｄ关于Ｈ＾ｐ空间的相应结论。     

Classification of flat indefinite Equicentroaffinely Homogeneous Surfaces in R4

A nondegenerate equi-centroaffine surface in R⁴ is called homogeneous if for any two points p and q on the surface there exists an equi-centroaffine transformation in R⁴ which takes the surface to itself and takes p to q. In this paper we classify the equi-centroaffinely homogeneous surfaces with flat indefinite metric in R⁴ up to centroaffine transformations.     

Time-Like Conformal Homogeneous Hypersurfaces with Three Distinct Principal Curvatures

A hypersurface x(M) in Lorentzian space R_1~4 is called conformal homogeneous,if for any two points p, q on M, there exists σ, a conformal transformation of R_1~4, such thatσ(x(M)) = x(M), σ(x(p)) = x(q). In this paper, the authors give a complete classification for regular time-like conformal homogeneous hypersurfaces in R_1~4 with three distinct principal curvatures.     

Möbius Homogeneous Hypersurfaces with Three Distinct Principal Curvatures in Sn+1

Let x : M~n→ S~(n+1) be an immersed hypersurface in the(n + 1)-dimensional sphere S~(n+1). If, for any points p, q ∈ Mn, there exists a Mbius transformation φ :S~(n+1)→ S~(n+1) such that φox(Mn~) = x(M~n) and φ ox(p) = x(q), then the hypersurface is called a Mbius homogeneous hypersurface. In this paper, the Mbius homogeneous hypersurfaces with three distinct principal curvatures are classified completely up to a Mbius transformation.     

Estimate for the Gradient of the Solution to the Neumann Problem for (p,q)-Nonlinear Equations

We consider the Neumann boundary value problem for the class of (p,q)-nonlinear elliptic equations. The numbers p and q, 2 ⩽ p < q, characterize the power growth with respect to the gradient of eigenvalues of the leading matrix of the equation. An a priori estimate for the maximum of the modulus of the gradient of the solution is obtained in a neighborhood of the boundary of the domain for some interval of p and q. Bibliography: 5 titles. __________ Translated from Problemy Matematicheskogo Analiza, No. 31, 2005, pp. 47–57.     

Blow-up of the solution for higher-order Kirchhoff-type equations with nonlinear dissipation

In this paper, we consider the nonlinear Kirchhoff-type equation $ u_{tt} + M(\left\| {D^m u(t)} \right\|_2^2 )( - \Delta )^m u + \left| {u_t } \right|^{q - 2} u_t = \left| {u_t } \right|^{p - 2} u $ u_{tt} + M(\left\| {D^m u(t)} \right\|_2^2 )( - \Delta )^m u + \left| {u_t } \right|^{q - 2} u_t = \left| {u_t } \right|^{p - 2} u with initial conditions and homogeneous boundary conditions. Under suitable conditions on the initial datum, we prove that the solution blows up in finite time.     

Sn+1(1)中的极小超曲面的等谱问题

设M为Sn 1(1)中紧致极小超面Mn1,n2= Sn1nn1×Sn2nn2 Sn 1(1)为Sn 1(1)中的Clifford极小超曲面如果Specp( M) =specp( Mn1,n2) ,Specq( M) =specq( Mn1,n2) ,其中0≤p 相似文献   

GABOR ANALYSIS OF THE SPACES M（p,q,w）（R~d） AND S（p,q,r,w,ω）（R~d）

Let g be a non-zero rapidly decreasing function and w be a weight function. In this article in analog to modulation space, we define the space M(p, q, w)(Rd) to be the subspace of tempered distributions f ∈ S′(Rd) such that the Gabor transform Vg(f) of f is in the weighted Lorentz space L(p, q, wdμ) (R2d). We endow this space with a suitable norm and show that it becomes a Banach space and invariant under time frequence shifts for 1 ≤ p, q ≤∞. We also investigate the embeddings between these spaces and the dual space of M(p, q, w)(Rd). Later we define the space S(p, q, r, w, ω)(Rd) for 1 < p < ∞, 1 ≤ q ≤∞. We endow it with a sum norm and show that it becomes a Banach convolution algebra. We also discuss some properties of S(p, q, r, w, ω)(Rd). At the end of this article, we characterize the multipliers of the spaces M(p, q, w)(Rd) and S(p, q, r, w, ω)(Rd).     

Transcendency of local conjugacies in complex dynamics and transcendency of their values

Letp andq be polynomials of the same degree. A classical result of Böttcher says that there exists a functionf conformal in a neighborhood of infinity such thatf(p(z))=q(f(z)). We show thatf is transcendental and takes transcendental values at algebraic points unlessp andq are linearly conjugate to monomials or Chebychev polynomials. As an application, we show that the conformal map from the exterior of the Mandelbrot set onto the exterior of the unit disk takes transcendental values at algebraic points. A second application is the solution of a transcendency problem posed by Golomb.     

General Solution of Two Functional Equations Concerning Measures of Information

In the characterization of multidimensional sum form information measures the two functional equations $$f(pq) + f(p(1 - q)) = f(p)\lbrace f(q) + f(1 - q)\rbrace \ \ \ p,q,\in I,$$ $$f(pq) + f(p(1 - q)) = f(p)\lbrace M(q) + M(1 - q)\rbrace \ \ \ p,q,\in I,$$ arise. For the one-dimensional case, these equations were studied by Maksa [2] and Kannappan and Sahoo [1], respectively. This paper extends their results to the n-dimensional case.     

A geometric criterion for compactness of invariant subspaces

Let M be a non-compact homogeneous Riemannian manifold, and let Ω be a compact subgroup of isometries of M. We show, under general conditions, that the Ω-invariant subspace A _Ω of a normed vector space ${A\hookrightarrow L^q(M)}$ A ? L q ( M ) is compactly embedded into L ^q (M) if and only if the group Ω has no orbits with a uniformly bounded diameter in a neighborhood of infinity.