Abstract
A Cattaneo equation for a comb structure is considered. We present a rigorous analysis of the obtained fractional diffusion equation, and corresponding solutions for the probability distribution function are obtained in the form of the Fox H-function and its infinite series. The mean square displacement along the backbone is obtained as well in terms of the infinite series of the Fox H-function. The obtained solutions describe the transition from normal diffusion to subdiffusion, which results from the comb geometry.
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