Asymptotic Behaviour of Dirichlet Problems in Perforated Domains

Asymptotic Behaviour of Dirichlet Problems in Perforated Domains
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穿孔域中狄利克雷问题的渐近行为

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发表时间:
1994
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通讯作者:
A. Garroni
A. Garroni
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作者:
A. Garroni

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设A是Rn的有界开集Ω上的具有有界可测系数的二阶线性椭圆算子,(Ωh)是Ω的开子集的任意序列.我们证明了以下紧性结果:存在一个子序列,仍记为(Ωh),和Ω上的一个正Borel测度μ,不充极集,使得对每个f ∈ H−1(Ω),方程Auh = f在Ωh中的解uh ∈ H1 0(Ωh),在ΩΩh上推广到0,在H10(Ω)中弱收敛到问题的唯一解u ∈ H10(Ω)<$L2 μ(Ω
Let A be a linear elliptic operator of the second order with bounded measurable coefficients on a bounded open set Ω of Rn , and let (Ωh) be an arbitrary sequence of open subsets of Ω. We prove the following compactness result: there exist a subsequence, still denoted by (Ωh) , and a positive Borel measure μ on Ω, not charging polar sets, such that, for every f ∈ H−1(Ω) , the solutions uh ∈ H1 0 (Ωh) of the equations Auh = f in Ωh , extended to 0 on ΩΩh , converge weakly in H1 0 (Ω) to the unique solution u ∈ H1 0 (Ω) ∩ L 2 μ(Ω) of the problem