Global Boundedness in a Logarithmic Keller–Segel System

Author:

Liu Jinyang12ORCID,Tian Boping1ORCID,Wang Deqi2,Tang Jiaxin2,Wu Yujin3ORCID

Affiliation:

1. School of Mathematics, Harbin Institute of Technology, Harbin 150001, China

2. School of Statistics, Chengdu University of Information Technology, Chengdu 610103, China

3. School of Economics and Management, Zhejiang Sci-Tech University, Hangzhou 310018, China

Abstract

In this paper, we propose a user-friendly integral inequality to study the coupled parabolic chemotaxis system with singular sensitivity under the Neumann boundary condition. Under a low diffusion rate, the classical solution of this system is uniformly bounded. Our proof replies on the construction of the energy functional containing ∫Ω|v|4v2 with v>0. It is noteworthy that the inequality used in the paper may be applied to study other chemotaxis systems.

Publisher

MDPI AG

Subject

General Mathematics,Engineering (miscellaneous),Computer Science (miscellaneous)

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4. Boundedness of solutions to parabolic–elliptic Keller-Segel systems with signal-dependent sensitivity;Fujie;Math. Methods Appl. Sci.,2015

5. Generalised supersolutions with mass control for the Keller–Segel system with logarithmic sensitivity;Zhigun;J. Math. Anal. Appl.,2018

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