离散型Carlson's不等式的一些推广及改进

In this paper, we consider Carlson type inequalities and discuss their possible improvement. First, we obtain two different types of generalizations of discrete Carlson's inequality by using the Hlder inequality and the method of real analysis, then we combine the obtained results with a summation formula of infinite series and some Mathieu type inequalities to establish some improvements of discrete Carlson's inequality and some Carlson type inequalities which are equivalent to the Mathieu type inequalities. Finally, we prove an integral inequality that enables us to deduce an improvement of the Nagy-Hardy-Carlson inequality.     

Extension of Hilbert's inequality

In this paper we make some further extensions of discrete Hilbert's inequality by using Euler-Maclaurin summation formula. We give the improvements of some previously obtained results and also compare our results with some previously known from the literature.     

关于Shafer-Fink不等式和Carlson不等式

改进了Shafer-Fink不等式的上界,并给出了Carlson不等式的一个上界估计.     

Carleman不等式的一种推广

本文对 Ｃａｒｌｅｍ ａｎ 不等式作出一种推广．     

一个新的涉及一个多重可变上限函数和一个部分和的半离散Hilbert型不等式

应用权函数的方法,Euler-Maclaurin求和公式,Abel部分求和公式及实分析技巧,求出了一个新的涉及一个多重可变上限函数和一个部分和的半离散Hilbert型不等式.作为应用,考虑了特殊参数下不等式中最佳常数因子联系多参数的等价条件及一些特殊不等式.     

On the extended Hilbert's inequality

In this paper, it is shown that the extended Hilbert's inequality for double series can be refined by the aid of the Euler-Maclaurin summation formula. The extreme cases and are discussed.

     

一个逆向Hilbert型不等式的推广及其应用

引入独立参数A及应用改进的Euler-Maclaurin求和公式以估算权系数,给出了—个具有最佳常数因子的逆向Hilbert型不等式的推广．作为应用,考虑了它的等价形式．     

关于含有Wallis公式的双边不等式

得到了含有 Wallis公式的一个简洁且更为精细的双边不等式 .     

积分不等式与P(o)ya-Szeg(o)不等式

The paper brings an important integral inequality,which includes the famous Polya-Szego inequality and the logarithmical-arithmetic mean inequality as special cases.     

Opial不等式的推广

本文通过引入一个权函数w(x)[w(x)＞0]证明了Opial不等式可以被推广.特别,当w(x)=1时,得到Opial不等式的一个加强的结果.     

An Extension of the Mitrinovi c-Djokovi e Inequality

A certain generalization of the Mitrinovi c-Djokovi c inequality is proved by means of elementary calculus.     

Hilbert重级数定理的一个新推广

通过引入一个适当的对数函数建立了一种新的Hilbert型不等式.利用Euler-Maclaurin求和公式对权函数进行了估计.证明了常数因子π2r＋1Er是最佳的,其中Er是Euler数.作为应用,给出了一些互相等价的不等式.     

一个积分不等式

由连续单调函数的几何意义直观地得出一个不等式,即若设函数f（x）在[0,b]上连续且单调递减,则有b∫0^af（x）dx≥a∫0^bf（x）dx（0≤a≤b）.通过构造辅助函数给出其数学证明,并对其加以推广．     

关于广义Hilbert双重级数不等式

本文建立了两个新型的广义Hilbert双重级数不等式.     

On an Extension and a Refinement of Van der Corput＇s Inequality

By introducing a parameterα,we give an extension of Van der Corput's inequal- ity.Also a new strengthened version of it is considered.     

On an Extension and a Refinement of Van der Corput's Inequality

By introducing a parameterα,we give an extension of Van der Corput's inequal- ity.Also a new strengthened version of it is considered.     

关于Ven der Curput不等式的一个推广及改进

By introducing a parameter α, we give an extension of Van der Corput's inequality. Also a new strengthened version of it is considered.     

Hardy-Hilbert重级数不等式的推广与改进

本文将著名的 Hardy-Hilbert重级数不等式∑∞m=1 ∑∞n=1ambnm + n≤ πsin(π/p) ∑∞n=1apn1p ∑∞n=1bqn1q∑∞m=1 ∑∞n=1anm + np ≤ πsin(π/p)p∑∞n=1apn进行了带参数形式的推广 ,同时改进了这些不等式     

Analogues of Euler and Poisson summation formulae

Euler-Maclaurin and Poisson analogues of the summations ε _{a <n ≤b} χ(n)f(n), have been obtained in a unified manner, where (χ(n)) is a periodic complex sequence;d(n) is the divisor function andf(x) is a sufficiently smooth function on [a, b]. We also state a generalised Abel’s summation formula, generalised Euler’s summation formula and Euler’s summation formula in several variables.