Large time behavior of ODE type solutions to higher-order semilinear parabolic equations with small initial data
Large time behavior of ODE type solutions to higher-order semilinear parabolic equations with small initial data
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小初始数据高阶半线性抛物型方程 ODE 型解的大时间行为
DOI:
10.1016/j.jmaa.2022.126625
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发表时间:
2023
影响因子:
1.3
通讯作者:
Eom Junyong
中科院分区:
文献类型:
--
作者:
Jie Gao;Ikuma Adachi;Eom Junyong
Let u be a solution to the Cauchy problem for semilinear parabolic equations (P m){∂ t u+(− Δ) m u=| u| α in R N×(0,∞), u (x, 0)= λ+ φ (x)> 0 in R N, where m= 1, 2,⋯, 0< α< 1, N≥ 1, λ> 0, φ∈ B C (R N)∩ L r (R N) with 1≤ r<∞. In the case of m= 1, by the comparison principle, one can easily show that the solution u to problem (P m) behaves like a positive solution to ODE ζ′= ζ α in (0,∞) as t→∞. In the case of m≥ 2, because of the lack of the comparison principle, it is not obvious that the solution u to problem (P m) behaves like a solution to the ODE as t→∞. In this paper, by imposing a smallness condition‖ φ‖ L∞(R N)< c with a certain constant c dependent on m, α and λ, we prove that the solution u behaves like a solution to the ODE as t→∞. Furthermore, we obtain the precise description of the large time behavior of the solution u and reveal the relationship between the diffusion effect (P m) has.
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DOI:
10.1016/j.jmaa.2007.05.082
发表时间:
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期刊:
影响因子:
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DOI:
10.3934/cpaa.2020199
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Journal d'Analyse Mathématique
影响因子:
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