On Reverses of the Blaschke-Santalo Inequality for Convex Bodies

Reisner proved a reverse of the Blaschke-Santal5 inequality for zonoid bodies, Bourgain and Milman showed another reverse of the Blaschke-Santal5 inequality for centered convex bodies. In this paper, two reverses of the Blaschke-Santal5 inequality for convex bodies are given by the Petty projection inequality and above two reverses. Further, using above methods, we also obtain two analogues of the Petty＇s conjecture for projection bodies, respectively.

On Reverses of the Lp-petty Projection Inequality

Lutwak, Yang and Zhang established the Lp-petty projection inequality. In this paper, the several reverses of the Lp-petty projection inequality are shown.

Extension of reverse Hilbert-type inequality with some parameters

By introducing some parameters and estimating the weight function,we obtain an extension of reverse Hilbert-type inequality with the best constant factor.As applications,we build its equivalent forms and some particular results.

Some Results on Reverses of Cauchy-Schwarz Inequality in Inner Product Spaces

Some new reverses of the Cauchy-Schwarz inequality in inner product spaces are presented in this paper. As an application of the main result, a formula for error estimate concerning Cauchy-Schwarz’s inequality is provided. The results obtained in the paper complement and improve some recent work about this topic.

一类非齐次核有界积分算子的反问题

基于有界算子的本质之一:当原象集有界时象集一定有界,提出算子有界的反问题,即当算子T的象集有界时,如何判断其原象集有界.先引入算子反向有界的概念,再利用权函数方法和实分析技巧,讨论积分算子反向有界的等价参数条件,并给出反向有界积分算子的构造定理.最后给出一些特例.

THE WEIGHTED KATO SQUARE ROOT PROBLEMOF ELLIPTIC OPERATORS HAVING A BMOANTI-SYMMETRICPART

Let n≥2 and let L be a second-order elliptic operator of divergence form with coefficients consisting of both an elliptic symmetric part and a BMO anti-symmetric part in ℝ^(n).In this article,we consider the weighted Kato square root problem for L.More precisely,we prove that the square root L^(1/2)satisfies the weighted L^(p)estimates||L^(1/2)(f)||L_(ω)^p(R^(n))≤C||■f||L_(ω)^p(R^(n);R^(n))for any p∈(1,∞)andω∈Ap(ℝ^(n))(the class of Muckenhoupt weights),and that||■f||L_(ω)^p(R^(n);R^(n))≤C||L^(1/2)(f)||L_(ω)^p(R^(n))for any p∈(1,2+ε)andω∈Ap(ℝ^(n))∩RH_(2+ε/p),(R^(n))(the class of reverse Hölder weights),whereε∈(0,∞)is a constant depending only on n and the operator L,and where(2+ε/p)'denotes the Hölder conjugate exponent of 2+ε/p.Moreover,for any given q∈(2,∞),we give a sufficient condition to obtain that||■f||L_(ω)^p(R^(n);R^(n))≤C||L^(1/2)(f)||L_(ω)^p(R^(n))for any p∈(1,q)andω∈A_(p)(R^(n))∩pRH_(q/p),(R^(n)).As an application,we prove that when the coefficient matrix A that appears in L satisfies the small BMO condition,the Riesz transform∇L^(−1/2)is bounded on L_(ω)^(p)(ℝ^(n))for any given p∈(1,∞)andω∈Ap(ℝ^(n)).Furthermore,applications to the weighted L^(2)-regularity problem with the Dirichlet or the Neumann boundary condition are also given.

逆弱鞅的一类概率不等式

给出逆弱鞅的Chow型极大值不等式和极小值不等式,利用Chow型极大值不等式得到了逆弱鞅的一类Doob型不等式,给出逆弱鞅的一类矩不等式.

逆弱鞅函数的一类Marshall型极大值概率不等式

逆弱下鞅是比鞅序列更为广泛的一类相依随机变量序列.本文利用一般随机变量的H9lder不等式和逆弱下鞅函数的Doob型极大值概率不等式,给出了逆弱下鞅函数{g(S_n),n≥1}在不同条件下的一类Marshall型极大值不等式,这里g是R上单调增的下凸函数.

ON BONNESEN-STYLE SYMMETRIC MIXED ISOHOMOTHETIC INEQUALITY IN R^2

In this paper,we investigate the translative containment measure for a convex domain K_i to contain,or to be contained in the homothetic copy of another convex domain tK_j(t≥0).Via the formulas of translative Blaschke and Poincare in integral formula,we obtain a Bonnesen-style symmetric mixed isohomothetic inequality.The Bonnesen-style symmetric mixed isohomothetic inequality obtained is known as Bonnesen-style inequality if one of the domains is a disc.As a direct consequence,we attain an inequality which strengthen the result proved by Bonnesen,Blaschke and Flanders.Furthermore,by the containment measure and Blaschke’s rolling theorem,we obtain the reverse Bonnesen-style symmetric mixed isohomothetic inequalities.These inequalities are the analogues of the known Bottema’s result in 1933.

Inequalities relating to L_p-version of Petty's conjectured projection inequality

Petty＇s conjectured projection inequality is a famous open problem in the theory of convex bodies. In this paper, it is shown that an inequality relating to Lp-version of the Petty＇s conjectured projection inequality is developed by using the notions of the Lp-mixed volume and the Lp-dual mixed volume, the relation of the Lp-projection body and the geometric body Г-pK, the Bourgain-Milman inequality and the Lp-Bnsemann-Petty inequality. In addition, for each origin-symmetric convex body, by applying the Jensen inequality and the monotonicity of the geometric body Г-pK, the reverses of Lp-version of the Petty＇s conjectured projection inequality and the Lp-Petty projection inequality are given, respectively.

On Hilbert’s Integral Inequality and Its Applications

The main result of this paper is presented as follows Let h is homogeneous and symmetric of degree and Then where provided the integrals on the RHS do exists. Some other special cases are also

The Reverse Holder Classes in Martingale Setting

In martingale setting, it has been shown thatA p weights can be factorized in terms ofA 1 weights. This factorization benefits many problems very much. In this paper, the new class of RH∞ plays the same role for RH s , which makes the reverse H?lder inequalities hold with exponents>1, that the classA 1 does forA p class. Therefore, the Jones' factorization theorem forA p weights was extended to include some information about the reverse H?lder classes. And it is the most convenient object in weight theory indeed. Key words martingale space - minimal function - weight inequality - reverse H?lder class CLC number O 221. 4 Foundation item: Supported by the National Natural Science Foundation of China (19771063)Biography: Zuo Hong-liang (1976-), male, Ph. D candidate, research direction: martingale theory.

矩阵乘积的加权最小二乘广义逆的反序律研究

加权广义逆是矩阵理论与应用中不可或缺的一部分,它在线性偏微分方程、多元统计分析、线性控制理论等领域有着广泛的应用.本文利用广义Schur补的极大极小秩这一方法研究了一些矩阵乘积的加权广义逆的反序律,给出了矩阵乘积的加权广义逆的反序律A_(3){1,3M_(3)}A_(2){1,3M_(2)}A_(1){1,3M_(1)}■(A_(1)A_(2)A_(3)){1,3M_(1)} 和 A_(3){1, 4M_(4)}A_(2){1, 4M_(3)}A_(1){1, 4M_(2)}■(A_(1)A_(2)A_(3)){1,4M_(4)}成立的充分必要条件.

一些高维逆Bonnesen型不等式

该文研究n维欧氏空间Rn中逆Bonnesen型不等式,主要利用Urysohn不等式,对偶等周不等式,平均宽度与平均截面面积,得到了一些高维逆Bonnesen型不等式.

一类反向的Jensen不等式(英文)

设f是区间I上的一个可微凸(凹)函数.如果对于每个t∈I,有f′(t)>0或f′(t)<0;且在I上1/f′(t)为凸或为凹,那么对于所有的pi>0和xi∈I(i=1,2,…,n)成立不等式f∑ni=1pixi∑ni=1pi≥(≤)∑ni=1pif(xi)f′(xi)∑ni=1pif′(xi) 还研究了等式成立的条件和若干相关的不等式.

关于反向Hardy-Hilbert积分不等式的推广

通过引入参数及估算权函数,建立了反向Hardy-Hilbert积分不等式的推广式,证明了:若p<0,1/p+1/q=1,2-q<λ<2-p,α≥-β,f(t),g(t)≥0,且0<∫∞α(t+β)1-λfp(t)dt<∞0<∫α∞(t+β)1-λgq(t)dt<∞则∫α∞∫α∞((f(x)g(y))/((X+Y+2β)λ)dxdy>{∫α∞kλ(p)-θλ(q)((α+β)/(t+β))(q+λ-2)/q(t+β)1-λfp(t)dt}1/p{∫α∞[kλ(p)-p/(p+λ-2)(α+β)/(t+β)(p+λ-2)/p](t+β)1-λgq(t)dt}1/q其中θλ(q)=∫011/(1+u)λu(q+λ-2)/q-1du,且常数因子kλ(p)=B((p+λ-2)/p,(q+λ-2)/q)为最佳值.

联系投影不等式Petty猜想的L_p-形式的不等式

在凸体理论中,投影不等式的Petty猜想是一个著名的公开问题.首先通过利用Lp-混合体积和Lp-对偶混合体积的概念、Lp-投影体和几何体Γ_pK的关系、Bourgain-Milman不等式和Lp-Busemann-Petty不等式,建立了一个联系投影不等式Petty猜想的Lp-形式的不等式.继而对于每一个关于原点对称的凸体,应用Jensen不等式和几何体Γ_pK的单调性,分别给出了投影不等式Petty猜想的Lp-形式的一个逆向不等式和Lp-Petty投影不等式的一个逆向不等式.

报废产品回收激励与监督的竞争博弈模型

为使环保部门可持续发展战略的推进与企业逆向物流战略的实施达到互动与耦合,实现双方的共赢,利用双层规划、均衡理论及变分不等式研究工具,建立基于Stackelberg-Nash-Cournot竞争的报废产品回收激励监督策略决策系统,主方决策模型考虑环保部门以较低的激励监督成本尽可能提高环境效益,从方决策模型描述了网络中各决策者在不同激励监督策略下的竞争行为.给出了这一问题的求解策略,最后通过算例对模型的均衡结果进行了对比分析,为环保部门制定有效的激励监督策略提供了理论支持.

一种基于反向K近邻的孤立点检测改进算法

基于反向k近邻的孤立点检测算法能够从全局角度较好地检测孤立点,但是在初始阶段求数据点的k近邻时,基本算法需要O(KN2)次数据点间的距离计算,不适合大数据集。同时参数k值的选取对数据集中孤立点的确定产生很大的影响。为此采用自适应的方法确定参数k值,然后提出一种利用度量空间的三角不等式的快速挖掘算法提前剪枝,减少孤立点检测时数据点之间距离计算的次数。理论分析和实验结果证明了算法的可行性和高效性。

A-调和张量的双权积分不等式

利用加权技巧,证明了A-调和张量的局部Ar(λ1,λ2;Ω)-双权弱逆H lder不等式.作为局部结果的应用,证明了一个整体Ar(λ1,λ2;Ω)-双权积分不等式.这些结果可以看作是经典结论的推广.