The soul conjecture for open Alexandrov spaces

From papers

Let XAlexn(0)X\in \operatorname{Alex}^n(0) be an open Alexandrov space, let SS be a compact totally convex soul without boundary, and let ϕ:XS\phi:X\to S be the Sharafutdinov projection.

Soul conjecture. If XX contains an open subset where the curvature is bounded below by a positive constant, then SS is a point.

This is a conjectured Alexandrov-geometric counterpart of the Riemannian soul theorem. The source notes that the submetry conjecture implies this conjecture, but gives no resolution.

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Sources & referencesView supporting material

Primary source

Xueping Li and Xiaochun Rong, “Open Alexandrov spaces of nonnegative curvature”, arXiv:2311.15174 (2025).

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