Generic properties in free boundary problems

Generic properties in free boundary problems
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自由边界问题的一般性质

DOI:
10.1300/j187v04n03_04
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发表时间:
2023
期刊:
Journal of Hiv\/aids & Social Services
影响因子:
--
通讯作者:
Hui Yu
Hui Yu
中科院分区:
--
文献类型:
--
作者:
Xavier Fernández;Hui Yu

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在这项工作中,我们证明了一大类能量,包括Alt-Caffarelli泛函和Alt-Phillips泛函的极小元的通有唯一性。然后,我们证明了单调边界数族$\varphi_t\t\in(-1,1)}$的单相Alt-Caffarelli泛函和Alt-Phillips泛函的极小子的自由边界的一般正则性。更确切地说,我们证明了对于$\varphi_t_{t\in(-1,1)}$的可数子集,极小元在Alt-Caffarelli的$\mathbb{R}^5$和Alt-Phillips泛函的$\mathbb{R}^3$中有光滑的自由边界。在一般的维度中,我们证明了对于$\varphi_t_{t\in(-1,1)}$中的几乎每个边界数据,奇异集都比预期的小一维。
In this work, we show the generic uniqueness of minimizers for a large class of energies, including the Alt-Caffarelli and Alt-Phillips functionals. We then prove the generic regularity of free boundaries for minimizers of the one-phase Alt-Caffarelli and Alt-Phillips functionals, for a monotone family of boundary data $\{\varphi_t\}_{t\in(-1,1)}$. More precisely, we show that for a co-countable subset of $\{\varphi_t\}_{t\in(-1,1)}$, minimizers have smooth free boundaries in $\mathbb{R}^5$ for the Alt-Caffarelli and in $\mathbb{R}^3$ for the Alt-Phillips functional. In general dimensions, we show that the singular set is one dimension smaller than expected for almost every boundary datum in $\{\varphi_t\}_{t\in(-1,1)}$.
DOI: 10.1215/00127094-2019-0077
发表时间: 2020
影响因子: 2.5
作者:
Engelstein, Max;Spolaor, Luca;Velichkov, Bozhidar
通讯作者: Velichkov, Bozhidar
关于某些简并单相自由边界问题
DOI: 10.1137/19m1308128
发表时间: 2021
影响因子: 2
作者:
De Silva, Daniela;Savin, Ovidiu
通讯作者: Savin, Ovidiu
DOI: 10.1515/crelle-2023-0067
发表时间: 2023
期刊: Journal für die reine und angewandte Mathematik (Crelles Journal
影响因子: --
作者:
Engelstein, Max;Fernández-Real, Xavier;Yu, Hui
通讯作者: Yu, Hui