一类推广的具有时滞的Pachpatte离散不等式及其应用

不仅把Pachpatte的离散不等式推广成时滞不等式,而且把不等式中的常数项推广成连续的正函数.推广后的不等式不仅包含了更多项,且不要求函数的单调性.利用单调化技巧给出了不等式中未知函数的估计.最后用得到的结果研究时滞差分方程初值问题解的唯一性与有界性.     

一类非线性差分不等式中未知函数的估计及其应用

该文建立了一类非线性差分不等式.此不等式包含了非线性函数与未知函数的复合函数,是一个具有多重和的差分不等式.利用单调技巧、放大方法、积分中值定理、变量替换技巧、差分和求和技巧,给出了未知函数的上界估计.最后,用所得结果研究了差分方程解的估计.     

两个新的三变量非线性积分不等式及其应用

在文献[Pachpatte,Demonstratio Math,2009,XLII,341-351]的基础上,建立了两个新的三变量非线性积分不等式.把参考文献中不等式右端被积因子u推广成u的非线性函数.运用变量替换技巧,放大技巧,积分微分技巧,反函数技巧,常量与变量的辩证关系,给出了不等式中未知函数的估计.推广了文献中相应不等式的结果.最后,用所得结果给出了三变量积分方程解的估计.     

一个新的非线性差分不等式及其应用

建立了一个一般形式的二变量的差分不等式,该不等式和号内包含两个不同的没有假设单调性的未知函数的复合函数.使用了单调化技术,利用了强单调的性质,给出了未知函数的估计.结果能对Ma Q H 等人文中考虑的离散不等式的未知函数进行估计.进一步,给出了差分方程解的估计.     

一类含有最大值项的二元时滞积分不等式的推广

本文研究一类含有最大值项的二元时滞非线性积分不等式,放弃对函数的单调性和可分离性要求.通过对不等式中的函数的单调化,给出了未知函数解的估计,在较弱的条件下推广了一些已有的结果,进而将所得的结果应用到研究含有最大值项的偏微分方程解的有界性.     

一类差分不等式及其应用

建立一类二变量的和差分不等式,该不等式包含了一个一重和与两个二重和,二重和号内包含两个不同的没有假设单调性的未知函数的复合函数.使用单调化技术,利用了强单调的性质,给出了差分不等式中未知函数的估计.结果能使我们对相关文献中考虑的差分不等式中未知函数进行估计.进一步,用结果给出了一类差分方程解的估计.     

一类含未知导函数p次幂的积分不等式中未知函数的估计

Gronwall-Bellman型积分不等式及其推广形式在研究微分方程、积分方程和微分-积分方程解的存在性、有界性、唯一性和稳定性等定性性质中有重要作用.研究了一类非线性积分不等式,被积函数中含有未知函数及其导函数的p次幂,积分项外有非常数因子和非常数项,利用变量替换技巧和放大技巧等分析手段,给出了积分-微分不等式中未知函数的上界估计,推广了已有结果.最后举例说明所得结果可以用来研究微分-积分方程解的定性性质.     

一个推广的二变量时滞积分不等式及其应用

建立了一类二变量的时滞积分不等式,不等式包含一个一重积分和两个二重积分,二重积分内包含两个不同的没有假设单调性的未知函数的复合函数.使用单调化技术,给出积分不等式中未知函数的估计.结果能对相关文献中考虑的积分不等式中未知函数进行估计.进一步,结果给出了一类积分-微分方程解的估计.     

时标上具有变时滞的推广的Gronwall型积分不等式

研究具有变时滞推广的Gronwall型积分不等式,并考虑在时标上的情况.基于时标定义、时标上的性质、时标上的Gronwall不等式判据等方法研究了 Gronwall型积分不等式的上界问题,并把研究区间分成三部分,然后采用在区间上分类讨论的方法,得到了三种情况下的推广的Gronwall型积分不等式.     

一类非线性积分不等式组中未知函数的估计

研究了一类二维非线性积分不等式组,该不等式组积分号外有非常数因子,不能用向量形式的Gronwall-Bellman型积分不等式进行估计.先利用Bernoulli不等式把非线性问题转化成线性问题,利用变量替换技巧和放大技巧研究只含有一个未知函数的积分不等式,接着利用两个引理和变量替换技巧和放大技巧给出不等式组中两个未知函数的估计.结果可用于研究积分、微分动力系统解的性质.     

On some dynamic inequalities of Steffensen type on time scales

In the present article, we investigate some new inequalities of Steffensen type on an arbitrary time scale using the diamond‐α dynamic integrals, which are defined as a linear combination of the delta and nabla integrals. The obtained inequalities extend some known dynamic inequalities on time scales and unify and extend some continuous inequalities and their discrete analogues.     

Hadamard-type fractional differential equations for the system of integral inequalities on time scales

ABSTRACT

This paper investigates some system of integral inequalities of one independent variable on time scales. The conclusion can be obtained by using Hadamard-type fractional differential equations and Greene's method which bring together and expand some integral inequalities on time scales. The established inequalities give explicit bounds on unknown functions which can be utilized as a key in examining the properties of certain classes of partial dynamic equations and difference equations on time scales. As an application, a system of fractional differential equations is considered to explain the value of our results.     

On weighted Ostrowski type,Trapezoid type,Grüss type and Ostrowski–Grüss like inequalities on time scales

In this paper, we first derive a weighted Montgomery identity on time scales and then establish weighted Ostrowski-type, Trapezoid-type, Grüss-type and Ostrowski–Grüss-like inequalities on time scales, respectively. These results not only provide a generalization of the known results, but also give some other interesting inequalities on time scales as special cases.     

Stieltjes integral inequalities of Gronwall type and applications

Summary We obtain estimates for solutions of integral inequalities of Gronwall type involving Stieltjes integrals and their inverse inequalities. From these we obtain some new results for integral inequalities for Riemann integrals and functional integral inequalities. Extensions are also given to Bihari type integral inequalities.Research supported by NSERC Canada.     

Some Iyengar-type inequalities on time scales for functions whose second derivatives are bounded

We establish some Iyengar-type inequalities on time scales for functions whose second derivatives are bounded by using Steffensen’s inequality on time scales.     

Weighted Hardy-Type Inequalities on Time Scales with Applications

In this paper, we will prove some new dynamic Hardy-type inequalities on time scales with two different weighted functions. The study is to determine conditions on which the generalized inequalities hold using some known hypothesis. The main results will be proved by employing Hölder’s inequality, Minkowski’s inequality and a chain rule on time scales. As special cases of our results, when the time scale is the real numbers, we will derive some well-known results due to Copson, Bliss, Flett and Bennett by a suitable choice of the weighted functions. We will apply the results to investigate the oscillation and nonoscillation of a half-linear second order dynamic equation on time scales.     

Some nonlinear dynamic inequalities on time scales

The aim of this paper is to investigate some nonlinear dynamic inequalities on time scales, which provide explicit bounds on unknown functions. The inequalities given here unify and extend some inequalities in (B G Pachpatte, On some new inequalities related to a certain inequality arising in the theory of differential equation, J. Math. Anal. Appl. 251 (2000) 736–751).     

Weighted integral and integro-differential inequalities

A general weighted integral inequality for two continuous functions on an interval [a,b] is presented. The equality conditions are given. This result implies the new inequalities for the incomplete beta and gamma functions as well as the related estimates for the confluent hypergeometric function, error function, and Dawson's integral. Also it implies various weighted integro-differential inequalities, those of the Opial type included, and some inequalities which involve the Erdélyi–Kober and Riemann–Liouville fractional integrals.     

Some Stieltjes integral inequalities

In this paper some integral inequalities involving Lebesgue-Stieltjes integrals have been obtained which generalize, in particular, Bellman-Gronwall's inequality for Stieltjes integrals. Such inequalities will play an important role in the study of stability of impulsively perturbed systems.     

Some new nonlinear Gronwall-Bellman-Type integral inequalities and applications to BVPs

In this paper we establish some new nonlinear Gronwall-Bellman-Type integral inequalities with two variables, which include a non-constant term outside the integrals. These inequalities generalize the results in Chen et al. (J. Inequal. Appl. 2009:258569, 15 p., 2009). We apply our result to a boundary value problem of a partial differential equation for boundedness, uniqueness and continuous dependence.