吉林大学学报(理学版)

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二阶双参数混合型偏差分方程解的振动性

马慧莉1, 薛蓉2   

  1. 1. 西北师范大学 商学院, 兰州 730070; 2. 西北师范大学 数学与统计学院, 兰州 730070
  • 收稿日期:2017-05-04 出版日期:2018-05-26 发布日期:2018-05-18
  • 通讯作者: 马慧莉 E-mail:mahuili@nwnu.edu.cn

Oscillation of SecondOrder Mixed Partial DifferenceEquation with Two Constant Coefficients

MA Huili1, XUE Rong2   

  1. 1. College of Business, Northwest Normal University, Lanzhou 730070, China;2. College of Mathematics and Statistics, Northwest Normal University, Lanzhou 730070, China
  • Received:2017-05-04 Online:2018-05-26 Published:2018-05-18
  • Contact: MA Huili E-mail:mahuili@nwnu.edu.cn

摘要: 利用包络理论研究带有两个常系数的二阶混合型偏差分方程pUm+2,n+qUm,n+2-Um,n+Um+σ,n-τ=0解的振动性, 得到了该方程解振动的3个充要条件. 其中: σ,τ为正整数; m,n为非负整数; p,q为实数.

关键词: 特征方程, 混合偏差分方程, 振动

Abstract: We invesigated the oscillation of the solution of the secondorder mixed partial difference equation with two constant coefficients pUm+2,n+qUm,n+2-Um,n+Um+σ,n-τ=0 by using the envelope theory, and obtained three necessary and sufficient conditions for the oscillation of solutions of the equation,  where σ and τ are positive integers, m and n are nonnegative integers, p and q are real numbers.

Key words: oscillation, characteristic equation, mixed partial difference equation

中图分类号: 

  • O175.7