Optimal Wloc2,2-regularity, Pohozhaevʼs identity, and nonexistence of weak solutions to some quasilinear elliptic equations
Optimal Wloc2,2-regularity, Pohozhaevʼs identity, and nonexistence of weak solutions to some quasilinear elliptic equations
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最优 Wloc2,2-正则性、Pohozhaev 恒等式以及某些拟线性椭圆方程不存在弱解
DOI:
10.1016/j.jde.2011.10.020
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发表时间:
2012
影响因子:
2.4
通讯作者:
P. Takáč
中科院分区:
文献类型:
--
作者:
Y. Sh. Il'yasov;P. Takáč
We begin by establishing a sharp (optimal) Wloc2,2-regularity result for bounded weak solutions to a nonlinear elliptic equation with the p-Laplacian, Δpu=defdiv(|∇u|p−2∇u), 1<p<∞. We develop very precise, optimal regularity estimates on the ellipticity of this degenerate (for 2<p<∞) or singular (for 1<p<2) problem. We apply this regularity result to prove Pohozhaevʼs identity for a weak solution u∈W1,p(Ω) of the elliptic Neumann problem Here, Ω is a bounded domain in RNwhose boundary ∂Ω is a C2-manifold, ν≡ν(x0) denotes the outer unit normal to ∂Ω at x0∈∂Ω, x=(x1,…,xN) is a generic point in Ω, and f∈L∞(Ω)∩W1,1(Ω). The potential W:R→R is assumed to be of class C1and of the typical double-well shape of type [Formula: see text] for s∈R, where α,β>1 are some constants. Finally, we take an advantage of the Pohozhaev identity to show that problem (P) with f≡0 in Ω has no phase transition solutionu∈W1,p(Ω) (1<p⩽N), such that −1⩽u⩽1 in Ω with u≡−1 in Ω−1and u≡1 in Ω1, where both Ω−1and Ω1are some nonempty subdomains of Ω. Such a scenario for u is possible only if N=1 and Ω−1, Ω1are finite unions of suitable subintervals of the open interval Ω⊂R1.
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DOI:
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发表时间:
1999
期刊:
影响因子:
--
作者:
J. I. Díaz;Jesús A. Hernández
通讯作者:
Jesús A. Hernández
影响因子:
1.1
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P. Takáč
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P. Takáč
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
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D. Hai
通讯作者:
D. Hai
DOI:
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发表时间:
1970
期刊:
影响因子:
--
作者:
S. Pohozaev
通讯作者:
S. Pohozaev
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
S. Kamin;L. Véron
通讯作者:
L. Véron