Journal
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
Volume 46, Issue 1, Pages 1076-1095Publisher
WILEY
DOI: 10.1002/mma.8566
Keywords
caputo derivative; fixed point theory; fractional diffusion; memory source
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This paper investigates the Cauchy problem for a fractional diffusion equation in the Caputo type sense. It provides a representation of solutions using Fourier series and analyzes initial value problems for the semi-linear fractional diffusion equation with a memory term. The stability of the fractional derivative order for the time is also discussed under certain assumptions on the input data, using Mittag-Leffler functions, the Banach fixed point theorem, and Sobolev embeddings.
In this paper we investigate the Cauchy problem for a fractional diffusion equation and the time-fractional derivative is taken in the Caputo type sense. We give a representation of solutions under Fourier series and analyze initial value problems for the semi-linear fractional diffusion equation with a memory term. We also discuss the stability of the fractional derivative order for the time under some assumptions on the input data. Our key idea is to use Mittag-Leffler functions, the Banach fixed point theorem, and some Sobolev embeddings.
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