A novel meshless technique based on generalized moving Kriging interpolation for Caputo-Hadamard time and Riesz space fractional reaction-diffusion equation

Document Type : Research Paper

Authors

Department of Mathematics, Faculty of Mathematical Sciences, Alzahra University, Tehran, Iran.

10.22034/cmde.2025.68697.3347

Abstract

Considering the significant applications of fractional differential equations, their numerical
solutions hold particular importance. Meshless methods have been employed by researchers
for numerically solving these equations, which are often of integer order in the spatial dimension. However, the governing equation in this paper involves the spatial fractional derivative
of the Riesz type and a singular Hadamard-type in spatial and time dimensions, respectively.
Instead of deriving the global weak form of the problem, we utilize their weak form over local
subdomains. In this study, for the first time, we calculate the Riesz-type fractional derivatives
of the shape functions of the moving Kriging interpolation method and use them to discretize
the reaction diffusion equation in the spatial dimension. The finite difference method is then
applied to discretize the problem in the temporal dimension. We also conduct a convergence
analysis, which demonstrates that the temporal order of the method is O(τ). To evaluate the
accuracy and capability of the present scheme, three numerical examples are tested, and the
results indicate high accuracy.

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Articles in Press, Accepted Manuscript
Available Online from 15 February 2026
  • Receive Date: 17 August 2025
  • Revise Date: 19 January 2026
  • Accept Date: 08 February 2026