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A new result on existence of global bounded classical solution to a attraction-repulsion chemotaxis system with logistic source
Journal of Differential Equations ( IF 2.4 ) Pub Date : 2021-07-12 , DOI: 10.1016/j.jde.2021.06.040
Jianing Xie 1 , Jiashan Zheng 2
Affiliation  

This paper concerns the existence of bounded classical solutions to the attraction-repulsion chemotaxis system with logistic source(⋆){ut=Δuχ(uv)+ξ(uw)+f(u),xΩ,t>0,0=Δvβv+αu,xΩ,t>00=Δwδw+γu,xΩ,t>0 in a smooth bounded domain ΩRN(N1), subject to nonnegative initial data and homogeneous Neumann boundary conditions, where f(u)abur for all u0 with some a0,b>0 and r1. Here χ,α,ξ,β as well as γ and δ are positive constants. It is proved that the corresponding system () possesses a unique global bounded classical solution in the balance case χα=ξγ with r>2N2N or, the attraction domination case ξα>ξγ with b(N2)+N(χαξγ) and r=2, respectively. The study of this paper improves the results in Li-Xiang (2016) [12], Xu-Zheng (2018) [39], Wang (2016) [26] as well as Zhao et al. (2017) [42] and Tello-Winkler (2007) [23], in which, the assumption b>(N2)+N(χαξγ) (see Li-Xiang (2016) as well as Wang (2016) and Zhao et al. (2017)) or b>(N2)+Nχ (see Tello-Winkler (2007)) or r>2N+2N+2 (see Xu-Zheng (2018)) or r>N2+4NN2 (see Li-Xiang (2016)) are intrinsically required.



中文翻译:

具有逻辑源的吸引-排斥趋化系统全局有界经典解存在性的新结果

本文涉及具有逻辑源(⋆)的吸引-排斥趋化系统的有界经典解的存在性{=Δ-χ(v)+ξ()+F(),XΩ,>0,0=Δv-βv+α,XΩ,>00=Δ-δ+γ,XΩ,>0 在光滑有界域中 Ω电阻N(N1),受非负初始数据和齐次 Neumann 边界条件的约束,其中 F()一种-r 对所有人 0 和一些 一种0,>0r1. 这里χ,α,ξ,β以及γδ是正常数。证明相应的系统() 在平衡情况下具有唯一的全局有界经典解 χα=ξγr>2N-2N 或者,吸引力支配案例 ξα>ξγ(N-2)+N(χα-ξγ)r=2, 分别。本文的研究改进了 Li-Xiang (2016) [12]、Xu-Zeng (2018) [39]、Wang (2016) [26] 以及 Zhao 等人的结果。(2017) [42] 和 Tello-Winkler (2007) [23],其中,假设>(N-2)+N(χα-ξγ) (参见 Li-Xiang (2016) 以及 Wang (2016) 和 Zhao et al. (2017))或 >(N-2)+Nχ (参见 Tello-Winkler (2007))或 r>2N+2N+2 (见徐正(2018))或 r>N2+4N-N2 (见 Li-Xiang (2016))本质上是必需的。

更新日期:2021-07-12
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