Local finiteness conjecture for the synthetic curvature measure

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Let X∈Alexn(−1)X\in\text{Alex}^n(-1), and let

μX=R⁡ d⁡Hn+K d⁡Hn−1+θ d⁡Hn−2\mu_X={\operatorname R}\,\operatorname d\mathcal{H}^n+\mathcal{K}\,\operatorname d\mathcal{H}^{n-1}+\theta\,\operatorname d\mathcal{H}^{n-2}

be the synthetic curvature measure, where R⁡{\operatorname R}, K\mathcal{K}, and θ\theta are the corresponding density functions. Local finiteness conjecture. One has

∫B1μX≤C(n).\int_{B_1}\mu_X\le C(n).

This asks whether the synthetic curvature measure is locally finite. The source presents it as an open question and does not provide a resolution.

References

Primary source

Nan Li, “Quantitative estimates on the C^2-singular sets in Alexandrov spaces”, arXiv:2306.03382 (2023).

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