吉林大学学报(理学版) ›› 2023, Vol. 61 ›› Issue (2): 203-213.

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一类时滞抛物方程一致随机吸引子的存在性

龚婷, 黎亚雨, 陈桂玲   

  1. 西南交通大学 数学学院, 成都 610031
  • 收稿日期:2022-06-11 出版日期:2023-03-26 发布日期:2023-03-26
  • 通讯作者: 龚婷 E-mail:gongting1027@163.com

Existence of Uniform Random Attractors for a Class of Delay Parabolic Equations

GONG Ting, LI Yayu, CHEN Guiling   

  1. School of Mathematics, Southwest Jiaotong University, Chengdu 610031, China
  • Received:2022-06-11 Online:2023-03-26 Published:2023-03-26

摘要: 考虑一类带加性噪声和非自治外力项的时滞抛物方程在光滑有界域上一致随机吸引子的存在性. 首先通过对解的一致估计, 得到方程的解具有关于符号空间的闭的一致拉回吸收集; 然后由Sobolev嵌入定理和Arzela-Ascoli定理得到解的一致拉回紧性; 最后证明一致随机吸引子的存在唯一性.

关键词: 一致随机吸引子, 时滞, 白噪声, 存在性

Abstract: We considered the existence of uniform  random attractors for a class of delay parabolic equations with additive noise and non-autonomous external force terms on the smooth  bounded domains. Firstly, through the uniform estimation of the solution, we obtained  that the solution of the equation had a closed uniform pullback absorbing set with respect to the symbol space. Secondly, by Sobolev imbedding theorem and Arzela-Ascoli theorem,
the uniform pullback compactness of the solution was obtained.  Finally, the existence and uniqueness of uniform random attractor was proved.

Key words: uniform random attractor, delay, white noise, existence

中图分类号: 

  • O175.29