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IMPROVEMENT OF CONDITIONS FOR ASYMPTOTIC STABILITY IN A TWO-SPECIES CHEMOTAXIS-COMPETITION MODEL WITH SIGNAL-DEPENDENT SENSITIVITY

机译:用信号依赖性灵敏度改善两种趋化性竞争模型中的渐近稳定性条件

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摘要

This paper deals with the two-species chemotaxis-competition system {u_t=d_1Δu-▽·(uχ1(w)▽w)+μ_1u(1-u-a_1υ) in Ω×(0,∞), u_t=d_2Δυ-▽·(uχ2(w)▽w)μ_2u(1-a_2u-υ) in Ω×(0,∞), u_t=d_3Δw+αu+βυ-γw in Ω×(0,∞), where is a bounded domain in Rn with smooth boundary ∂Ω, n≥2; χi are functions satisfying some conditions. About this problem, Bai-Winkler [1] first obtained asymptotic stability in (1) under some conditions in the case that a_1,a_2∈(0,1). Recently, the conditions assumed in [1] were improved ([6]); however, there is a gap between the conditions assumed in [1] and [6]. The purpose of this work is to improve the conditions assumed in the previous works for asymptotic behavior in the case that a_1,a_2∈(0,1).
机译:本文涉及两种趋化性竞争系统{U_T =D_1ΔU-·(Uχ1(W)▽W)+μ_1U(1-U-A_1υ),以ω×(0,∞),U_T =D_2ΔΣ-▽ ·(Uχ2(w)▽w)μ_2u(1-a_2u-n)以ω×(0,ν),u_t =d_3Δw+αu+β-γw以ω×(0,∞),其中有界域rn与光滑的边界νω,n≥2; χi是满足某些条件的功能。关于这个问题,Bai-Winkler [1]在A_1,A_21(0,1)的情况下,首先在某些条件下获得(1)的渐近稳定性。最近,[1]中的条件改善了([6]);然而,在[1]和[6]中的条件之间存在间隙。这项工作的目的是改善以前在A_1,A_21(0,1)的情况下为渐近行为的前一作品中假设的条件。

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