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Journal of Zhejiang University (Science Edition)  2022, Vol. 49 Issue (1): 41-48    DOI: 10.3785/j.issn.1008-9497.2022.01.006
Mathematics and Computer Science     
Existence of nonoscillatory solutions of higher order nonlinear neutral difference equations with positive and negative coefficients and multiple variable delays
Ping ZHANG1(),Guijiang QIN2,Jiashan YANG2()
1.School of Science, Shaoyang University, Shaoyang 422004, Hunan Province, China
2.School of Data Science and Software Engineering, Wuzhou University, Wuzhou 543002, Guangxi Zhuang Autonomous Region, China
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Abstract  

By using the fixed point theorem in Banach space and the inequality technique,we discuss the existence of positive solution for a class of higher order nonlinear neutral difference equations with positive and negative coefficients and multiple variable delays.Under certain conditions,we establish a few new nonoscillation criteria.Our results improve and extend some known results.



Key wordspositive and negative coefficient      multiple variable delays      higher order nonlinear neutral difference equations      nonoscillation      fixed point theorem     
Received: 25 October 2020      Published: 18 January 2022
CLC:  O 175.7  
Corresponding Authors: Jiashan YANG     E-mail: 411451097@qq.com;syxyyjs@163.com
Cite this article:

Ping ZHANG,Guijiang QIN,Jiashan YANG. Existence of nonoscillatory solutions of higher order nonlinear neutral difference equations with positive and negative coefficients and multiple variable delays. Journal of Zhejiang University (Science Edition), 2022, 49(1): 41-48.

URL:

https://www.zjujournals.com/sci/EN/Y2022/V49/I1/41


具正负系数和多变时滞的高阶非线性中立型差分方程非振动解的存在性

利用Banach空间的不动点原理和不等式技巧,研究具正负系数和多变时滞的高阶非线性中立型差分方程正解的存在性,在一定条件下,建立了该方程的新的非振动准则,所得结论推广并改进了一系列已有结果。


关键词: 正负系数,  多变时滞,  高阶非线性中立型差分方程,  非振动,  不动点定理 
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