科研之友
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摘要
It is proved that the asymptotic shape of the solution for a wide class of fractional Fokker-Planck-type equations with coefficients depending on coordinate and time is a stretched Gaussian for the initial condition being pulse function in the homogeneous and heterogeneous fractal structures, whose mean square displacement behaves like <(Delta X)(2) (t)>similar to t(gamma) and <(Delta x)(2)(t)>similar to x(-theta)t(gamma) (0 <gamma < 1, -infinity <theta <+infinity), respectively.
