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arXiv 1903.01404math.AP
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奇异椭圆方程解的渐近行为与存在性

Asymptotic behavior and existence of solutions for singular elliptic equations

Riccardo Durastanti

AI总结:

该文研究γ趋于无穷时奇异半线性椭圆方程齐次Dirichlet问题解的渐近行为,在f的两种假设下得到极限方程存在性,并推导出对应另一类椭圆方程正解的最优存在结果。

摘要:

我们研究当γ趋于无穷时,与奇异半线性椭圆方程相关的齐次Dirichlet问题解的渐近行为,该方程的模型为$-Δu=\frac{f(x)}{u^γ}\\,\text{ 在 }Ω$内,其中Ω是$\mathbb{R}^N$中的有界开集,f是有界函数。我们在关于f的两种不同假设下处理极限方程的存在性:要么在Ω的每个紧包含子集上严格为正,要么仅非负。通过本研究,我们推导出与方程$-Δv + \frac{|\nabla v|^2}{v} = f\\,\text{ 在 }Ω$内相关的齐次Dirichlet问题正解的最优存在性结果。

英文摘要:

We study the asymptotic behavior, as $γ$ tends to infinity, of solutions for the homogeneous Dirichlet problem associated to singular semilinear elliptic equations whose model is $$ -Δu=\frac{f(x)}{u^γ}\,\text{ in }Ω, $$ where $Ω$ is an open, bounded subset of $\RN$ and $f$ is a bounded function. We deal with the existence of a limit equation under two different assumptions on $f$: either strictly positive on every compactly contained subset of $Ω$ or only nonnegative. Through this study we deduce optimal existence results of positive solutions for the homogeneous Dirichlet problem associated to $$ -Δv + \frac{|\nabla v|^2}{v} = f\,\text{ in }Ω. $$

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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