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arXiv · 2008.01311

Bubbling and extinction for some fast diffusion equations in bounded domains

Tianling Jin·Jingang Xiong
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Abstract

We study a Sobolev critical fast diffusion equation in bounded domains with the Brezis-Nirenberg effect. We obtain extinction profiles of its positive solutions, and show that the convergence rates of the relative error in regular norms are at least polynomial. Exponential decay rates are proved for generic domains. Our proof makes use of its regularity estimates, a curvature type evolution equation, as well as blow up analysis. Results for Sobolev subcritical fast diffusion equations are also obtained.

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Tianling Jin, Jingang Xiong. 2020-08-04. Bubbling and extinction for some fast diffusion equations in bounded domains. https://arxiv.org/abs/2008.01311

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