Metric Latschev theorem for infinite metric spaces

Let MM be a closed Riemannian manifold, and let dGHd_{\mathrm{GH}} denote the Gromov–Hausdorff distance. For sufficiently small rr, the metric Vietoris–Rips thickening VR<m(X;r)\mathrm{VR}^m_<(X;r) is defined for any metric space XX. Metric Latschev conjecture. For any rr sufficiently small, there exists a δ\delta such that every, possibly infinite, metric space XX satisfying

dGH(M,X)<δd_{\mathrm{GH}}(M,X)<\delta

also satisfies

VR<m(X;r)M.\mathrm{VR}^m_<(X;r)\simeq M.

This extends the finite-metric-space analogue of Latschev’s theorem; the extension to infinite XX is stated to be currently unknown.

Sources & referencesView supporting material

Primary source

Michal Adamaszek, Henry Adams and Florian Frick, “Metric reconstruction via optimal transport”, arXiv:1706.04876 (2018).

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