Quantitative Hausdorff measure conjecture for singular strata of Alexandrov spaces

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Let n∈\mathdsNn\in\mathds{N}, let kk be a nonnegative integer, and let (X,p)∈Alex⁡n(−1)(X,p)\in\operatorname{Alex}^n(-1), where Sϵk\mathcal{S}^k_\epsilon denotes the ϵ\epsilon-singular stratum. Hausdorff measure conjecture. There is a constant C(n)>0C(n)>0 such that

Hk(Sϵk∩B1(p))<C(n)ϵ1−(n−k).\mathcal{H}^{k}(\mathcal{S}^{k}_\epsilon\cap B_1(p))<C(n)\epsilon^{1-(n-k)}.

The conjecture proposes an explicit dependence on ϵ\epsilon for the Hausdorff measure estimate supplied by the preceding corollary. Its status is not resolved in the provided source context.

References

Primary source

Nan Li and Aaron Naber, “Quantitative Estimates on the Singular Sets of Alexandrov Spaces”, arXiv:1912.03615 (2019).

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