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非自治时滞差分方程的线性化渐近稳定性 总被引:17,自引:0,他引:17
本文证明了,在某种条件下,非自治非线性时滞差分方程xn+1-xn+pnf(xn-kn)=0,n∈N零解的渐近稳定性可由其线性化方程yn+1-yn+pnyn-kn=0,n∈N零解的渐近稳定性来确定.作为应用,也研究了离散时滞logistic方程的稳定性. 相似文献
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证明了在一定条件下,具有可变时滞的非线性非自治差分方程的全局渐近稳定性可由某种线性差分方程的渐近稳定性确定,给出了这类差分方程全局渐近稳定的充分条件.作为实例,获得了具有可变时滞的离散型非自治广义Log istic方程的全局吸收性判别准则. 相似文献
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一类非线性时滞差分方程的渐近稳定性 总被引:4,自引:0,他引:4
本文考虑了时滞差分万程。x_n 1-x_n=-q_nx_(n-k(n)) G(n,x_(n-t(n)))零解的渐近稳定性,推广了文[2]的主要结果. 相似文献
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时滞差分方程的正解与全局渐近稳定性 总被引:1,自引:0,他引:1
本文通过研究一类一阶变系数时滞差分方程xn+1-xn+∑si=1pi,nxn-ki=0,n=0,1,2,…的一个正解的性质,得到了它的零解为全局渐近稳定的充分条件. 相似文献
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研究了一类非自治非线性时滞差分方程△xn=rnxn1-xn-k/1-cxn-k的正确解关于平衡点1的振动性,所获结果改进和推广了献[6]中的相关结论。 相似文献
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本文对高维非自治差分方程x(τ+1)=f(τ,x)+g(τ,y);y(τ+1)=k(τ,x,y) (1)得到了保证其平凡解渐近稳定,一致渐近稳定的判别准则,而对V逐数的差分不要求负定性,推广了文[1]中相应的结果. 相似文献
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考虑非自治差分方程xn 1=xnexp(rn 1-xn/1 λxn),n∈N的全局吸引性.这里{rn}是非负实数列,λ≥0,我们获得了方程每一解在初始条件下趋于1的充分条件. 相似文献
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讨论了二阶线性矩阵差分方程AXn+2+BXn+1+CXn=0的解及其渐近稳定性.首先,给出了它的特征方程有解的一个充要条件,然后利用特征方程两个相异的解刻划出该矩阵差分方程的通解,并分析其解的渐近稳定性,最后运用一实例验证了相关结果. 相似文献
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本文对无限及有限时滞差分方程建立新的Razumikhin型稳定性定理,其中可避免采 用不易寻找的辅助函数P.所得结论包含了文[1]的有关结果. 相似文献
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This paper studies the nonautonomous nonlinear system of difference equations △x(n) = A(n)x(n) f(n, x(n)), n ∈ Z, (*)where x(n) ∈ RN,A(n) = (aij(n))N×N is an N × N matrix, with aij∈ C(R,R) for i,j =ω, z) = f(t, z) for any t ∈ R, (t, z) ∈ R × RN and ω is a positive integer. Sufficient conditions for the existence of ω-periodic solutions to equations (*) are obtained. 相似文献
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利用变分法获得了一类二阶微分方程异宿解存在的一个充分条件.将连续情况下的二阶微分方程异宿解研究推广到离散情况下来研究. 相似文献
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Abstract The general method of Lyapunov functionals construction, that was proposed by Kolmanovskii and Shaikhet and successfully used already for functional-differential equations, difference equations with discrete time, difference equations with continuous time, and is used here to investigate the stability in probability of nonlinear stochastic Volterra difference equations with continuous time. It is shown that the investigation of the stability in probability of nonlinear stochastic difference equation with order of nonlinearity more than one can be reduced to investigation of the asymptotic mean square stability of the linear part of this equation. 相似文献
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周期系数二阶线性微分方程的稳定性 总被引:2,自引:0,他引:2
史金麟 《数学物理学报(A辑)》2000,20(1):130-139
讨论周期系数二阶线性微分方程的稳定性问题,给出了判定稳定性较精确的方法,利用这个方法,获得了判定稳定性简洁而实用的若干准则。 相似文献
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We consider perturbed linear systems of difference equations with periodic coefficients. The zero solution of a nonperturbed system is assumed asymptotically stable, i.e., all eigenvalues of the monodromy matrix belong to the unit disk {||<1}. We obtain conditions on the perturbation of this system under which the zero solution of the system is asymptotically stable and also establish continuous dependence of one class of numeric characteristics of asymptotic stability of solutions on the coefficients of the system. 相似文献
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On the Stability of Functional Equations and a Problem of Ulam 总被引:10,自引:0,他引:10
Themistocles M. Rassias 《Acta Appl Math》2000,62(1):23-130
In this paper, we study the stability of functional equations that has its origins with S. M. Ulam, who posed the fundamental problem 60 years ago and with D. H. Hyers, who gave the first significant partial solution in 1941. In particular, during the last two decades, the notion of stability of functional equations has evolved into an area of continuing research from both pure and applied viewpoints. Both classical results and current research are presented in a unified and self-contained fashion. In addition, related problems are investigated. Some of the applications deal with nonlinear equations in Banach spaces and complementarity theory. 相似文献