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- Title
EXISTENCE OF NONLINEAR LANE-EMDEN EQUATION OF FRACTIONAL ORDER.
- Authors
Ibrahim, Rabha W.
- Abstract
We study a Dirichlet boundary value problem for the Lane-Emden equation involving two fractional orders. Lane-Emden equation has been widely used to describe a variety of phenomena in physics and astrophysics, including aspects of stellar structure, the thermal history of a spherical cloud of gas, isothermal gas spheres, and thermionic currents. However, ordinary Lane-Emden equation does not provide a correct description of the dynamics of systems in complex media. In order to overcome this problem and describe dynamical processes in a fractal medium, numerous generalizations of Lane-Emden equation have been proposed. One such generalization replaces the ordinary derivative by a fractional derivative in the Lane-Emden equation. This gives rise to the fractional Lane-Emden equation with a single index. Recently, a new type of Lane-Emden equation with two different fractional orders has been introduced which provides a more flexible model for fractal processes as compared with the usual one characterized by a single index. The contraction mapping principle and Krasnoselskii's fixed point theorem are applied to prove the existence of solutions of the problem in a Banach space.
- Subjects
NONLINEAR theories; FRACTIONS; PHYSICS; ASTROPHYSICS; THERMIONIC emission
- Publication
Miskolc Mathematical Notes, 2012, Vol 13, Issue 1, p39
- ISSN
1787-2405
- Publication type
Article
- DOI
10.18514/MMN.2012.453