Nonlinear Analysis: Real World Applications ( IF 1.8 ) Pub Date : 2020-10-20 , DOI: 10.1016/j.nonrwa.2020.103237 Wanwan Wang , Yuxiang Li
The purpose of this paper is to study radially symmetric solutions of a parabolic–elliptic chemotaxis system (0.1)subject to homogeneous Neumann boundary conditions, where with , and denotes the time-dependent spatial mean of . The chemosensitivity and nonlinear signal production are suitably regular functions. We show that the blow-up phenomenon of radially symmetric solution of (0.1) in finite time for some initial datum , when and for all with and . However, system (0.1) admits a global bounded classical solution for arbitrary initial datum when and for all with .
中文翻译:
具有非线性信号产生的趋化系统中的有界性和有限时间爆炸
本文的目的是研究抛物线-椭圆趋化系统的径向对称解(0.1)服从齐次Neumann边界条件,其中 与 , 和 表示随时间变化的空间均值 。化学敏感性 和非线性信号产生 是适当的常规函数。我们证明了径向对称解的爆炸现象 初始时间内在有限时间内的(0.1) , 什么时候 和 对所有人 与 和 。但是,系统(0.1)在以下情况下接受任意初始基准的全局有界经典解 和 对所有人 与 。