On a doubly nonlinear diffusion model of chemotaxis with prevention of overcrowding

This paper addresses the existence and regularity of weak solutions for a fully parabolic model of chemotaxis, with prevention of overcrowding, that degenerates in a two-sided fashion, including an extra nonlinearity represented by a p- Laplacian diffusion term. To prove the existence of weak soluti...

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Bibliographic Details
Main Author: Bendahmane, Mostafa (author)
Other Authors: Bürger, Raimund (author), Baier, Ricardo Ruiz (author), Urbano, José Miguel (author)
Format: other
Language:eng
Published: 2008
Subjects:
Online Access:http://hdl.handle.net/10316/11234
Country:Portugal
Oai:oai:estudogeral.sib.uc.pt:10316/11234
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Summary:This paper addresses the existence and regularity of weak solutions for a fully parabolic model of chemotaxis, with prevention of overcrowding, that degenerates in a two-sided fashion, including an extra nonlinearity represented by a p- Laplacian diffusion term. To prove the existence of weak solutions, a Schauder fixedpoint argument is applied to a regularized problem and the compactness method is used to pass to the limit. The local H¨older regularity of weak solutions is established using the method of intrinsic scaling. The results are a contribution to showing, qualitatively, to what extent the properties of the classical Keller-Segel chemotaxis models are preserved in a more general setting. Some numerical examples illustrate the model.