Hilfer, R. (ed.), Applications of fractional calculus in physics. Singapore: World Scientific. 87-130 (2000).
The author discusses the terms semigroup, continuity, homogeneity, casuality and coarse graining in order to define time evolution. The main interest of this article lies in fractional evolution equations and their emergence from coarse graining. Explicit solutions to generalized fractional relaxation equations are obtained in terms of Mittag-Leffler functions by the application of Laplace transform. Similarly, generalized fractional relaxation equations are solved in terms of Fox’s
-function by the application of Fourier-Laplace transforms. At the end of the article, some basic properties of Fox’s
-function are given in the Appendix.