The converse Alexandrov-to-distributional sectional curvature conjecture for metrics
Let ) be a Riemannian manifold with such that is an Alexandrov space with curvature bounded from below (respectively, above) by . Distributional sectional curvature is the curvature notion defined by distributional inequalities for the curvature tensor of a low-regularity metric.
Converse curvature conjecture. The distributional sectional curvature of is bounded from below (respectively, above) by .
This conjecture asks for a converse to the paper's result that, for metrics, distributional sectional-curvature bounds imply the corresponding Alexandrov curvature bounds. Its status is not established in the supplied text.
References
Primary source
Darius Erös, Michael Kunzinger, Argam Ohanyan and Alessio Vardabasso, “Distributional sectional curvature bounds for Riemannian metrics of low regularity”, arXiv:2503.17337 (2026).
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