中文

作为Sobolev型常数极限的Cheeger常数

偏微分方程分析 2023-12-25 v2

摘要

Ω\OmegaRN,\mathbb{R}^{N}, N2N\geq2中的有界光滑区域。对1<p<N1<p<N0<q(p)<p:=NpNp0<q(p)<p^{\ast}:=\frac{Np}{N-p},令 λp,q(p):=inf{Ωupdx:uW01,p(Ω)  且  Ωuq(p)dx=1}. \lambda_{p,q(p)}:=\inf\left\{ \int_{\Omega}\left\vert \nabla u\right\vert ^{p}\mathrm{d}x:u\in W_{0}^{1,p}(\Omega)\text{ \ 且 \ }\int_{\Omega }\left\vert u\right\vert ^{q(p)}\mathrm{d}x=1\right\} . 我们证明若limp1+q(p)=1,\lim_{p\rightarrow1^{+}}q(p)=1,limp1+λp,q(p)=h(Ω)\lim_{p\rightarrow 1^{+}}\lambda_{p,q(p)}=h(\Omega),其中h(Ω)h(\Omega)表示Ω\Omega的Cheeger常数。此外,我们研究Lane-Emden方程div(wp2w)=wq2w-\operatorname{div}(\left\vert \nabla w\right\vert ^{p-2}\nabla w)=\left\vert w\right\vert ^{q-2}w的正解wp,q(p)w_{p,q(p)}p1+p\rightarrow1^{+}时的性态。

关键词

引用

@article{arxiv.2307.15618,
  title  = {The Cheeger constant as limit of Sobolev-type constants},
  author = {Grey Ercole},
  journal= {arXiv preprint arXiv:2307.15618},
  year   = {2023}
}

备注

16 pages. Typing errors have been corrected, one reference has been added, and the abstract has been slightly modified