Some remarks on the optimization of eigenvalue problems involving the p-Laplacian

Some remarks on the optimization of eigenvalue problems involving the p-Laplacian
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关于涉及 p-拉普拉斯特征值问题优化的一些评论

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发表时间:
2008
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通讯作者:
W. Pielichowski
W. Pielichowski
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作者:
W. Pielichowski

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给定一个有界域(Omega子集mathbb{R}^n),数(p gt 1),(alpha geq 0)和(A in [0,|Omega|]),考虑优化问题:找到测度(A)的子集(D子集Ω),对于该子集,算子的第一特征值(umapsto - int {div}(| 阿布拉乌|^{p-2} abla u)+ α chi_D| u| ^{p-2}u)与Dirichlet边界条件尽可能小。我们证明了最优构形(D)与相应的正本征函数(u)以这样一种方式相联系,即存在一个数(tgeq 1),使得(D={uleq t}).当(Ω)是Steiner对称的且(p = 2)时,我们给出了最优解对称性的一个新的证明.
Given a bounded domain (Omega subset mathbb{R}^n), numbers (p gt 1), (alpha geq 0) and (A in [0,|Omega |]), consider the optimization problem: find a subset (D subset Omega ), of measure (A), for which the first eigenvalue of the operator (umapsto - ext{div} (| abla u|^{p-2} abla u)+ alpha chi_D |u|^{p-2}u ) with the Dirichlet boundary condition is as small as possible. We show that the optimal configuration (D) is connected with the corresponding positive eigenfunction (u) in such a way that there exists a number (tgeq 1) for which (D={u leq t}). We also give a new proof of symmetry of optimal solutions in the case when (Omega ) is Steiner symmetric and (p = 2).