Maximum principles and monotonicity of solutions for fractional p-equations in unbounded domains
Maximum principles and monotonicity of solutions for fractional p-equations in unbounded domains
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无界域分数p方程解的最大原理和单调性
DOI:
10.1016/j.jde.2020.09.001
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发表时间:
2019-05
影响因子:
2.4
通讯作者:
Zhao Liu
中科院分区:
文献类型:
--
作者:
Zhao Liu
In this paper, we consider the following non-linear equations in unbounded domains Ω with exterior Dirichlet condition:{(− Δ) p s u (x)= f (u (x)), x∈ Ω, u (x)> 0, x∈ Ω, u (x)= 0, x∈ R n∖ Ω, where (− Δ) p s is the fractional p-Laplacian defined as (0.1)(− Δ) p s u (x)= C n, s, p PV∫ R n| u (x)− u (y)| p− 2 [u (x)− u (y)]| x− y| n+ s p d y with 0< s< 1 and p≥ 2. We first establish a maximum principle in unbounded domains involving the fractional p-Laplacian by estimating the singular integral in (0.1) along a sequence of approximate maximum points. Then, we obtain the asymptotic behavior of solutions far away from the boundary. Finally, we develop a sliding method for the fractional p-Laplacians and apply it to derive the monotonicity and uniqueness of solutions. There have been similar results for the classical Laplacian [3] and for the fractional Laplacian [39], which are linear operators. Unfortunately, many approaches there no longer work for the fully non-linear fractional p-Laplacian here. To circumvent these difficulties, we introduce several new ideas, which enable us not only to deal with non-linear non-local equations, but also to remarkably weaken the conditions on f (⋅) and on the domain Ω. We believe that the new methods developed in our paper can be widely applied to many problems in unbounded domains involving non-linear non-local operators.
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DOI:
10.34657/2741
发表时间:
2016-11
期刊:
--
影响因子:
--
作者:
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DOI:
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期刊:
DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS - A
影响因子:
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DOI:
10.1016/j.anihpc.2012.01.006
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