The carrying capacity to chemotaxis system with two species and competitive kinetics in N dimensions

The carrying capacity to chemotaxis system with two species and competitive kinetics in N dimensions
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DOI:
10.1007/s00033-020-01363-z
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发表时间:
2020-07
期刊:
Zeitschrift für angewandte Mathematik und Physik
影响因子:
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通讯作者:
Guangyu Xu
Guangyu Xu
中科院分区:
其他
文献类型:
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作者:
Guangyu Xu

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本文研究了两种群趋化系统0.1 {ut = d_1 Δ u-χ _1 <$u(u <$w)+ μ_1 u}的解(1-u-a_ 1 v),&\quad x ∈ Ω,\quad t> 0,\v_t = d_2 Δ v-χ _2 π(v <$w)+ μ _ 2 v(1-a2 uv),& quad x ∈ Ω,\quad t> 0,\0 = d3 Δ w-γ w+ α u+ β v&\quad x ∈ Ω,\quad t> 0. ut= d 1 Δ u-χ 1·(u w)+ μ 1 u(1-u-a 1 v),x∈ Ω,t> 0,vt= d 2 Δ v-χ 2·(v w)+ μ 2 v(1-a 2 u-v),x∈ Ω,t> 0,0= d 3 Δ w-γ w+ α u+ β vx∈ Ω,t> 0在光滑有界域Ω R^ N中,N ≥ 1 Ω RN,N≥ 1。当d1 = d2 = 0 d1 = d2 = 0时,我们首先利用紧性论证建立了相应的双曲-双曲-椭圆问题的局部适定性,然后得到了该问题的有限时间爆破结果.利用这个爆破结论,我们进一步考虑了(0.1)的经典解,并得到对任意给定的M> 0 M> 0和T> 0 T> 0,可以找到合适的大的径向对称的初始数据和适当的参数,使得(0.1)满足u(x,t)+ v(x,t)> M,u(x,t)+ v(x,t)> M,其中x ∈ Ω x∈ Ω,t ∈(0,T)t∈(0,T).
This paper deals with the solution of two-species chemotaxis system 0.1 {u_t= d_1 Δ u-χ _1 ∇ ⋅ (u ∇ w)+ μ _ 1 u (1-u-a_ 1 v), &\quad x ∈ Ω,\quad t> 0,\v_t= d_2 Δ v-χ _2 ∇ ⋅ (v ∇ w)+ μ _ 2 v (1-a_ 2 uv), &\quad x ∈ Ω,\quad t> 0,\0= d_3 Δ w-γ w+ α u+ β v&\quad x ∈ Ω,\quad t> 0. ut= d 1 Δ u-χ 1∇·(u∇ w)+ μ 1 u (1-u-a 1 v), x∈ Ω, t> 0, vt= d 2 Δ v-χ 2∇·(v∇ w)+ μ 2 v (1-a 2 u-v), x∈ Ω, t> 0, 0= d 3 Δ w-γ w+ α u+ β vx∈ Ω, t> 0 in a smooth bounded domain Ω ⊂ R^ N, N ≥ 1 Ω⊂ RN, N≥ 1. When d_1= d_2= 0 d 1= d 2= 0, we first establish the local well-posedness of corresponding hyperbolic–hyperbolic–elliptic problem with the help of some compactness arguments and then obtain a blowup in finite time result for this problem. Using this blow-up conclusion, we further consider model (0.1) with small d_1, d_2> 0 d 1, d 2> 0, and we then get that for any given M> 0 M> 0 and T> 0 T> 0, one can find suitable large, radially symmetric initial data and some appropriate parameters such that the corresponding classical solution of (0.1) satisfies u (x, t)+ v (x, t)> M, u (x, t)+ v (x, t)> M, with some x ∈ Ω x∈ Ω and t ∈ (0, T) t∈(0, T).