TY - JOUR T1 - A Space-Time Petrov-Galerkin Spectral Method for Time Fractional Diffusion Equation JO - Numerical Mathematics: Theory, Methods and Applications VL - 4 SP - 854 EP - 876 PY - 2018 DA - 2018/06 SN - 11 DO - http://doi.org/10.4208/nmtma.2018.s10 UR - https://global-sci.org/intro/article_detail/nmtma/12476.html KW - AB -

We develop in this paper a space-time Petrov-Galerkin spectral method for linear and nonlinear time fractional diffusion equations (TFDEs) involving either a Caputo or Riemann-Liouville derivative. Our space-time spectral method is based on generalized Jacobi functions (GJFs) in time and Fourier-like basis functions in space. A complete error analysis is carried out for both linear and nonlinear TFDEs. Numerical experiments are presented to demonstrate the effectiveness of the proposed method.