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一阶中立型时滞差分方程振动的充分必要条件
引用本文:豆可可,郭松柏. 一阶中立型时滞差分方程振动的充分必要条件[J]. 数学的实践与认识, 2013, 43(12)
作者姓名:豆可可  郭松柏
作者单位:1. 杭州王道电子商务有限公司研发部,浙江杭州,310000
2. 海南师范大学数学与统计学院,海南海口,571158
摘    要:研究了一阶常系数中立型时滞差分方程A[x(n)-px(n-τ)]+qx(n-σ)=0的振动性.通过构造若干适当的函数,分别得到了在01两种情况下该方程的一切解振动的充分必要条件.

关 键 词:差分方程  振动性  特征方程

Necessary and Sufficient Conditions for Oscillation of First Order Delay Difference Equations
DOU Ke-ke , GUO Song-bai. Necessary and Sufficient Conditions for Oscillation of First Order Delay Difference Equations[J]. Mathematics in Practice and Theory, 2013, 43(12)
Authors:DOU Ke-ke    GUO Song-bai
Abstract:In this paper,oscillation of the first order neutral delay difference equation△[x(n)—px(n—τ)]+ qx(n—σ) = 0 with constant coefficients is studied.By constructing several suitable functions,the necessary and sufficient conditions,which guarantee the oscillation of this equation,are established for two cases 0 < p < 1 and p > 1,respectively.
Keywords:difference equation  oscillation  characteristic equation
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