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arXiv 2602.19804math.DGmath.AP
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对给定平均曲率超曲面的拓扑和奇点集的定量估计

Quantitative Estimates on the Topology and Singular Set of Prescribed Mean Curvature Hypersurfaces

National Taiwan Normal University(台湾师范大学);Instituto de Matemáticas, Universidad Nacional Autónoma de México(墨西哥国立自治大学数学研究所);University of Cambridge(剑桥大学)

Nicolau S. Aiex, Sean McCurdy, Paul Minter

AI总结:

本文研究了给定平均曲率超曲面的拓扑和奇点性质,建立了面积和曲率约束下的定量估计,扩展了极小超曲面的相关研究。

摘要:

我们建立了在黎曼流形$(N^{n+1},h)$中(某些)给定平均曲率(PMC)超曲面$V^n$的拓扑和奇点性质的定量特性。确实,如果$V$的面积至多为$A>0$,且给定的平均曲率由一个$C^{1,α}$函数$g:N→\mathbb{R}$给出,且具有界$|g|_{C^{1,α}}\leq Γ$,我们证明存在一个仅依赖于$n,h,A,Γ$和几何量的常数$C$,使得:当$3\leq n+1\leq 7$时,$\sum^n_{i=0}b^i(V) \leq C(1+\text{index}(V))$;当$n+1\geq 8$时,$M^{*n-7}(\text{sing}(V)) \leq C(1+\text{index}(V))$。这里,$b^i$表示任何域上的贝蒂数,$M^{*n-7}$表示上$(n-7)$维闵可夫斯基测度,$\text{sing}(V)$是$V$的奇点集。第一个不等式将Song在极小超曲面设定下的工作扩展到给定平均曲率超曲面设定,而第二个不等式扩展了作者之前的工作。我们的结果适用于最近通过极小方法构造的给定平均曲率超曲面。

英文摘要:

We establish quantitative topological and singularity properties for (certain) prescribed mean curvature (PMC) hypersurfaces $V^n$ in Riemannian manifolds $(N^{n+1},h)$. Indeed, if $V$ has area at most $A>0$ with PMC given by a $C^{1,α}$ function $g:N\to \mathbb{R}$ with the bound $|g|_{C^{1,α}}\leq Γ$, we show that there exists a constant $C$ depending only on $n,h,A,Γ$ and geometric quantities such that: \[\sum^n_{i=0}b^i(V) \leq C(1+\text{index}(V)) \quad \text{if }3\leq n+1\leq 7;\] \[M^{*n-7}(\text{sing}(V)) \leq C(1+\text{index}(V)) \quad \text{if }n+1\geq 8.\] Here, $b^i$ denote the Betti numbers over any field, $M^{*n-7}$ denotes the upper $(n-7)$-dimensional Minkowski content, and $\text{sing}(V)$ is the singular set of $V$. The first inequality extends the work of Song from the minimal hypersurface setting to the PMC hypersurface setting, whilst the second extends work of the authors. Our results apply to the PMC hypersurfaces constructed recently through min-max techniques by Bellettini--Wickramasekera.

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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