Sormani's minA-IF stability conjecture for Riemannian 3-tori

From papers

Let {(Mi,gi)}i=1\{(M_i,g_i)\}_{i=1}^\infty be a sequence of Riemannian 33-tori. Assume that diam(Mi,gi)\operatorname{diam}(M_i,g_i) is uniformly bounded above, while vol(Mi,gi)\operatorname{vol}(M_i,g_i) and minA(Mi,gi)\operatorname{minA}(M_i,g_i) are uniformly bounded away from 00. Here, minA(Mi,gi)\operatorname{minA}(M_i,g_i) is the infimum of the areas of closed embedded minimal surfaces in MiM_i. Sormani's minA-IF stability conjecture. If Rgi1/iR_{g_i}\geqslant-1/i, then (Mi,gi)(M_i,g_i) has a subsequence converging to a flat torus in the volume-preserving intrinsic flat sense as ii\to\infty. This conjecture seeks an almost-rigidity statement for the Geroch conjecture that excludes thin tunnels and other-world constructions through a uniform lower bound on the minA invariant. The source does not state whether the conjecture has been resolved.

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Sources & referencesView supporting material

Primary source

Demetre Kazaras and Kai Xu, “Drawstrings and flexibility in the Geroch conjecture”, arXiv:2309.03756 (2026).

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