Communications on Applied Mathematics and Computation ›› 2025, Vol. 7 ›› Issue (4): 1462-1488.doi: 10.1007/s42967-023-00346-x

• ORIGINAL PAPERS • 上一篇    下一篇

Numerical Stability and Convergence for Delay Space-Fractional Fisher Equations with Mixed Boundary Conditions in Two Dimensions

Jing Chen, Qi Wang   

  1. School of Mathematics and Statistics, Guangdong University of Technology, Guangzhou, 510006, Guangdong, China
  • 收稿日期:2023-06-26 修回日期:2023-09-14 接受日期:2023-10-23 出版日期:2024-02-05 发布日期:2024-02-05
  • 通讯作者: Qi Wang,E-mail:bmwzwq@126.com E-mail:bmwzwq@126.com
  • 作者简介:Jing Chen, E-mail:cjing220701@163.com
  • 基金资助:
    This work is supported by the National Natural Science Foundation of China (No. 11201084).

Numerical Stability and Convergence for Delay Space-Fractional Fisher Equations with Mixed Boundary Conditions in Two Dimensions

Jing Chen, Qi Wang   

  1. School of Mathematics and Statistics, Guangdong University of Technology, Guangzhou, 510006, Guangdong, China
  • Received:2023-06-26 Revised:2023-09-14 Accepted:2023-10-23 Online:2024-02-05 Published:2024-02-05
  • Supported by:
    This work is supported by the National Natural Science Foundation of China (No. 11201084).

摘要: In this paper, for generalized two-dimensional delay space-fractional Fisher equations with mixed boundary conditions, we present the stability and convergence computed by a novel numerical method. The unconditional stability of analytic solutions is first derived. Next, we have established the linear θ-method with the Grünwald-Letnikov operator, which has the first-order accuracy in spatial dimensions. Moreover, approaches involved error estimations and inequality reductions are utilized to prove the stability and convergence of numerical solutions under different values of θ. Eventually, we implement a numerical experiment to validate theoretical conclusions, where the interaction impacts of fractional derivatives have been further analyzed by applying two different harmonic operators.

关键词: Space-fractional delay Fisher equation, Grünwald-Letnikov operator, Linear θ-method, Stability, Convergence

Abstract: In this paper, for generalized two-dimensional delay space-fractional Fisher equations with mixed boundary conditions, we present the stability and convergence computed by a novel numerical method. The unconditional stability of analytic solutions is first derived. Next, we have established the linear θ-method with the Grünwald-Letnikov operator, which has the first-order accuracy in spatial dimensions. Moreover, approaches involved error estimations and inequality reductions are utilized to prove the stability and convergence of numerical solutions under different values of θ. Eventually, we implement a numerical experiment to validate theoretical conclusions, where the interaction impacts of fractional derivatives have been further analyzed by applying two different harmonic operators.

Key words: Space-fractional delay Fisher equation, Grünwald-Letnikov operator, Linear θ-method, Stability, Convergence

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