2025 Volume 15 Issue 6
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Guocai Cai, Qingxia Liu. NUMERICAL SOLUTION OF FRACTIONAL SINGULAR PERTURBATION CAUCHY PROBLEM[J]. Journal of Applied Analysis & Computation, 2025, 15(6): 3207-3225. doi: 10.11948/20250018
Citation: Guocai Cai, Qingxia Liu. NUMERICAL SOLUTION OF FRACTIONAL SINGULAR PERTURBATION CAUCHY PROBLEM[J]. Journal of Applied Analysis & Computation, 2025, 15(6): 3207-3225. doi: 10.11948/20250018

NUMERICAL SOLUTION OF FRACTIONAL SINGULAR PERTURBATION CAUCHY PROBLEM

  • Author Bio: Email: gotry@xmu.eud.cn(G. Cai)
  • Corresponding author: Email: liuqx@xmu.edu.cn(Q. Liu)
  • Fund Project: The authors were supported by the Natural Science Foundation of Fujian Province of China (Grant Nos. 2022J01035 and 2023J01026) and the National Natural Science Foundation of China (Grant Nos. 12371372, 12371081 and 12271450)
  • In this work, we consider a singularly perturbed Cauchy problem where the small parameter $ \varepsilon $ appears in the highest-order derivative term (i.e., the fractional derivative). First, we analyze some properties of the fractional singular perturbation problem. Then, a Shishkin mesh is introduced to address it, as traditional numerical methods for singularly perturbed problems may lead to numerical instability. Finally, we present numerical results demonstrating good stability and accuracy.

    MSC: 34A08, 34E15, 65Lxx
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