Anomalous diffusion on interval with reflecting edges

V. V. Uchaikin suggested a mathematical model of an anomalous diffusion in a space. This model origins in an investigation of processes in complex systems with variable structure: glasses, liquid crystals, biopolymers, proteins and etc. In such a model a coordinate of a particle has stable distribution (not normal one).
In this article the anomalous diffusion with periodic initial conditions on an interval with reflecting edges is considered. The article is devoted to an investigation of rate convergence of anomalous diffsion to uniform distribution.