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Nonlinear Diffusion Equations on Unbounded Fractal Domains

✍ Scribed by Kenneth J. Falconer; Jiaxin Hu


Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
144 KB
Volume
256
Category
Article
ISSN
0022-247X

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✦ Synopsis


We investigate the nonlinear diffusion equation βˆ‚u/βˆ‚t = u + u p p > 1 on certain unbounded fractal domains, where is the infinitesimal generator of the semigroup associated with a corresponding heat kernel. We show that there are nonnegative global solutions for non-negative initial data if p > 1 + 2/d s , while solutions blow up if p ≀ 1 + 2/d s , where d s is the spectral dimension of the domain. We investigate smoothness and HΓΆlder continuity of solutions when they exist.


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