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1.
设{X_(ni):1≤i≤n,n≥1}为行间NA阵列,g(x)是R~+上指数为α的正则变化函数,r>0,m为正整数,{a_(ni):1≤i≤n,n≥1}为满足条件(?)|a_(ni)|=O((g(n))~1)的实数阵列,本文得到了使sum from n=1 to ∞n~(r-1)Pr(|■multiply from j=1 to m a_(nij) X_(nij)|>ε)<∞,■ε>0成立的条件,推广并改进了Stout及王岳宝和苏淳等的结论。  相似文献   

2.
E^n中Euler不等式的推广   总被引:2,自引:0,他引:2  
杨世国 《数学杂志》1991,11(4):470-474
设 n 维欧氏空间 E~n 中 n 维单形 Ω 的外接球半径为 R,内切球半径为 r,M.S.Klamkin 获得 E~n 中之 Euler 不等式:R≥nr.本文给出 E~n 中 Euler 不等式的下述几个推广:(i)R~2≥δ_nn~2r~2+(?);(ii)R~2≥(?)/2(1+δ_n)n~2r~2+(1/2)(?);(iii)R~2≥n~2r~2+(1/4)(?)其中 I、O、G 分别为单形Ω的内心、外心与重心,δ_n=(?)[1-((ρ_(ij)-ρ_(jk))~2(ρ_(jk-ki))~2(ρ_(ki)-ρ_(ij))~2)/(ρ_(ij)ρ_(jk)ρ(k(?)))]~((-1)/n(n~2-1))≥1,ρ_(ij)=(?)(1≤i相似文献   

3.
设H=(X;E_1,E_2,…,E_m)是一个超图,H的r-截口,记作H_((r)),定义为(X;ε_((r)),其中ε_((r))={F;FX,|≤| F |≤r,且存在E_i使FE_i}.对任一超图H,H_((r))唯一存在,但并非任一秩不超过r的超图是某个超图的r-截口。本文给出了以给定超图为  相似文献   

4.
一个r-图是一个无环的无向图,其中任何两个顶点之间至多被r条边连接.一个m+1个顶点的r-完全图,记为K_(m+1)((r)),是一个m+1个顶点的r-图,其中任何两个顶点之间恰好被r条边连接.一个非增的非负整数序列π=(d_1,d_2,…,d_n)称为是r-可图的如果它是某个n个顶点的r-图的度序列.一个r-可图序列π称为是蕴含(强迫)K_(m+1)((r)),是一个m+1个顶点的r-图,其中任何两个顶点之间恰好被r条边连接.一个非增的非负整数序列π=(d_1,d_2,…,d_n)称为是r-可图的如果它是某个n个顶点的r-图的度序列.一个r-可图序列π称为是蕴含(强迫)K_(m+1)((r))可图的如果π有一个实现包含K_(m+1)((r))可图的如果π有一个实现包含K_(m+1)((r))作为子图(π的每一个实现包含K_(m+1)((r))作为子图(π的每一个实现包含K_(m+1)((r))作为子图).设σ(K_(m+1)((r))作为子图).设σ(K_(m+1)((r)),n)(τ(K_(m+1)((r)),n)(τ(K_(m+1)((r)),n))表示最小的偶整数t,使得每一个r-可图序列π=(d_1,d_2,…,d_n)具有∑_(i=1)((r)),n))表示最小的偶整数t,使得每一个r-可图序列π=(d_1,d_2,…,d_n)具有∑_(i=1)n d_i≥t是蕴含(强迫)K_(m+1)n d_i≥t是蕴含(强迫)K_(m+1)((r))-可图的.易见,σ(K_(m+1)((r))-可图的.易见,σ(K_(m+1)((r)),n)是Erds等人的一个猜想从1-图到r-图的扩充且τ(K_(m+1)((r)),n)是Erds等人的一个猜想从1-图到r-图的扩充且τ(K_(m+1)((r)),n)是经典Turan定理从1-图到r-图的扩充.本文给出了蕴含K_(m+1)((r)),n)是经典Turan定理从1-图到r-图的扩充.本文给出了蕴含K_(m+1)((r))的r-可图序列的两个简单充分条件.此两个条件包含了Yin和Li在[Discrete Math.,2005,301:218-227]中的两个主要结果和当n≥max{m((r))的r-可图序列的两个简单充分条件.此两个条件包含了Yin和Li在[Discrete Math.,2005,301:218-227]中的两个主要结果和当n≥max{m2+3m+1-[(m2+3m+1-[(m2+m)/r],2m+1+[m/r]]}时,σ(K_(m+1)2+m)/r],2m+1+[m/r]]}时,σ(K_(m+1)((r)),n)之值.此外,我们还确定了当n≥m+1时,τ(K_(m+1)((r)),n)之值.此外,我们还确定了当n≥m+1时,τ(K_(m+1)((r)),n)之值.  相似文献   

5.
确定了一类中心循环的有限p-群G的自同构群.设G=X_3(p~m)~(*n)*Z_(p~(m+r)),其中m≥1,n≥1和r≥0,并且X_3(p~m)=x,y|x~(p~m)=y~(p~m)=1,[x,y]~(p~m)=1,[x,[x,y]]=[y,[x,y]]=1.Aut_nG表示Aut G中平凡地作用在N上的元素形成的正规子群,其中G'≤N≤ζG,|N|=p~(m+s),0≤s≤r,则(i)如果p是一个奇素数,那么AutG/Aut_nG≌Z_(p~((m+s-1)(p-1))),Aut_nG/InnG≌Sp(2n,Z_(p~m))×Z_(p~(r-s)).(ii)如果p=2,那么AutG/Aut_nG≌H,其中H=1(当m+s=1时)或者Z_(2~(m+s-2))×Z_2(当m+s≥2时).进一步地,Aut_nG/InnG≌K×L,其中K=Sp(2n,Z_(2~m))(当r0时)或者O(2n,Z_(2~m))(当r=0时),L=Z_(2~(r-1))×Z_2(当m=1,s=0,r≥1时)或者Z_(2~(r-s)).  相似文献   

6.
关于亚纯函数族■的唯一性   总被引:2,自引:0,他引:2  
§1.引言设f(z)是开平面内非常数的亚纯函数,α为复数,λ为正整数,我们用E(α,f)表示f(z)-α的0点集合,用E_(?)(α,f)表示f(z)-α的重级不高于λ的0点集合,在上述集合中,每个0点仅计一次。有时我们也把E(α,f),E_(λ))(α,f)及E(b,f~~(k)),E_λ(b,f~(k))分别简记为E(α),E_(λ))(α)及E~((k))(b),E_(λ))~((k))(b),其中b为复数,k为正整数。在本文中,我们设F表示满足条件δ(0)=δ(∞)=1的开平面内非常数亚纯函数族。显然F中的函数均为超越亚纯函数(?  相似文献   

7.
单位上三角矩阵群的注记   总被引:2,自引:2,他引:0  
记Tr_1(n,Z)是整数环Z上对角线元素全是1的全体上三角矩阵组成的群,k_(ij)(1≤i相似文献   

8.
设g,φ∈H(D),φ(D)D,n是正整数,定义广义积分算子为I_(g,φ)~((n))f(z)=∫_0~zf~((n))(φ(ζ))g(ζ)dζ.本文给出了F(p,q,s)空间到Bloch型空间的广义积分算子的差分的有界性和紧性的充要条件.  相似文献   

9.
设{X_n}是平稳序列,X_1~((n))≤…≤X_n~((n))是X_1…X_n的顺序统计量。{k_n(r)},r=1,2是二变秩序列。本文在某种相关条件限制下得到了{X_(kn)~((n))(1),X_(n-_(kn))~((n))(2)+1)}的极限分布。特别地,对满足k_n(r)/n→λ(r)∈[0,1),r=1,2的特殊秩序列,得到了{(X_(kn)~((n))(1),X_(n-_(kn))~((n))(2)+1)}的所有可能的极限分布类。  相似文献   

10.
设F是一个图,■是一个超图,如果存在一个双射φ:E(F)→E(■),使得?e∈E(F)有e?φ(e),那么称超图■是Berge-F.不含Berge-F作为子超图的n阶r-一致超图所能达到的最大边数称为Berge-F的Turán数,记作exr(n,Berge-F).线性森林是指连通分支全是路或者孤立顶点的图.设■n,k是一类含有n个顶点k条边的线性森林图族.本文研究了r-一致超图中Berge-■n,k的Turán数.当r≥k+1和3≤r≤■(k-1)/2■-1时,分别确定了exr(n,Berge-■n,k)的精确值;当■(k-1)/2■≤r≤k时,给出了exr(n,Berge-■n,k)的上界.  相似文献   

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12.
We study a class of self-similar processes with stationary increments belonging to higher order Wiener chaoses which are similar to Hermite processes. We obtain an almost sure wavelet-like expansion of these processes. This allows us to compute the pointwise and local Hölder regularity of sample paths and to analyse their behaviour at infinity. We also provide some results on the Hausdorff dimension of the range and graphs of multidimensional anisotropic self-similar processes with stationary increments defined by multiple Wiener–Itô integrals.  相似文献   

13.
It is considered the class of Riemann surfaces with dimT1 = 0, where T1 is a subclass of exact harmonic forms which is one of the factors in the orthogonal decomposition of the spaceΩH of harmonic forms of the surface, namely The surfaces in the class OHD and the class of planar surfaces satisfy dimT1 = 0. A.Pfluger posed the question whether there might exist other surfaces outside those two classes. Here it is shown that in the case of finite genus g, we should look for a surface S with dimT1 = 0 among the surfaces of the form Sg\K , where Sg is a closed surface of genus g and K a compact set of positive harmonic measure with perfect components and very irregular boundary.  相似文献   

14.
As early as in 1990, Professor Sun Yongsheng, suggested his students at Beijing Normal University to consider research problems on the unit sphere. Under his guidance and encouragement his students started the research on spherical harmonic analysis and approximation. In this paper, we incompletely introduce the main achievements in this area obtained by our group and relative researchers during recent 5 years (2001-2005). The main topics are: convergence of Cesaro summability, a.e. and strong summability of Fourier-Laplace series; smoothness and K-functionals; Kolmogorov and linear widths.  相似文献   

15.
Schr(o)dinger operator is a central subject in the mathematical study of quantum mechanics.Consider the Schrodinger operator H = -△ V on R, where △ = d2/dx2 and the potential function V is real valued. In Fourier analysis, it is well-known that a square integrable function admits an expansion with exponentials as eigenfunctions of -△. A natural conjecture is that an L2 function admits a similar expansion in terms of "eigenfunctions" of H, a perturbation of the Laplacian (see [7], Ch. Ⅺ and the notes), under certain condition on V.  相似文献   

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<正>Aims and Scope Journal of Mathematical Research with Applications(JMRA),formerly Journal of Mathematical Research and Exposition(JMRE)created in 1981,is one of the transactions of China Society for Industrial and Applied Mathematics,and is a bimonthly journal.JMRA is dedicated to publishing first-rate original research papers in all areas of mathematics with applications,and making research findings available to a wide scientific world,as JMRE has for many years.In line with the name change,the new scope of Journal of Mathematical Research with Applications will not include the articles on mathematical methodology and mathematical philosophy.Copyright Information  相似文献   

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<正>Erratum to:Science in China Series A:Mathematics,April 2009 Vol.52 No.4:617–630doi:10.1007/s11425-009-0038-2There is a mistake in the proof of[1,Lemma 2.2],which occurs in 4-th line at[1,p.619],  相似文献   

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