上海大学学报(自然科学版) ›› 2021, Vol. 27 ›› Issue (6): 1149-1161.doi: 10.12066/j.issn.1007-2861.2257

• 研究论文 • 上一篇    下一篇

时空分数阶波方程解的渐近性与长时间行为

李志强1,2()   

  1. 1.上海大学 理学院, 上海 200444
    2.吕梁学院 数学系, 山西 吕梁 033001
  • 收稿日期:2020-05-08 出版日期:2021-12-31 发布日期:2020-09-23
  • 通讯作者: 李志强 E-mail:lizhiqiang0914@126.com
  • 作者简介:李志强(1981—), 男, 博士, 研究方向为分数阶偏微分方程的数值计算. E-mail: lizhiqiang0914@126.com
  • 基金资助:
    国家自然科学基金资助项目(11926319);山西省自然科学基金资助项目(201801D121010)

Asymptotics and large time behavior of solutions to a type of time-space fractional wave equation

LI Zhiqiang1,2()   

  1. 1. College of Sciences, Shanghai University, Shanghai 200444, China
    2. Department of Mathematics, Lüliang University, Lüliang 033001, Shanxi, China
  • Received:2020-05-08 Online:2021-12-31 Published:2020-09-23
  • Contact: LI Zhiqiang E-mail:lizhiqiang0914@126.com

摘要:

研究带分数阶 Laplace 算子的时间-空间分数阶偏微分方程解的渐近性, 其中时间分数阶导数是在 Caputo 导数意义下, 其导数阶 $\alpha\in(1,2)$. 利用 Fox $H$-函数的性质和 Young 不等式给出了解的梯度估计, 并且研究了其长时间行为.

关键词: Caputo 导数, 分数阶 Laplace 算子, 渐近性, 长时间行为

Abstract:

This study investigates the asymptotic behaviors of a solution to time-space fractional partial differential equation with the fractional Laplacian, where the time fractional derivative is in the sense of Caputo, with the order $\alpha\in(1,2)$. By using the properties of the Fox $H$-function and Young's inequality, gradient estimates and large time behavior of the solution are obtained.

Key words: Caputo derivative, fractional Laplacian, asymptotic behavior, large time behavior

中图分类号: