Numerical schemes and multivariate extrapolation of a two-dimensional anomalous sub-diffusion equation (Q970584)

This paper is concerned with approximation of solutions for anomalous sub-diffusion equations in planar domains. Two numerical methods (one explicit and another implicit) are proposed that rely on the finite difference method. The paper focuses on the stability and convergence of the method. Further, a new multivariate extrapolation is introduced to improve the accuracy of the methods. Various numerical examples are presented to support the theoretical results obtained in this paper.