Sormani's intrinsic-flat stability conjecture for almost nonnegative scalar curvature

Let MjM_j be a sequence of Riemannian manifolds diffeomorphic to a 33-torus such that

vol(Mj)=V0,diam(Mj)D0,minA(Mj)A0>0,\operatorname{vol}(M_j)=V_0,\qquad \operatorname{diam}(M_j)\leq D_0,\qquad \operatorname{minA}(M_j)\geq A_0>0,

where

minA(Mj)=inf{vol(Σ):Σ is a closed minimal surface in Mj}.\operatorname{minA}(M_j)=\inf\{\operatorname{vol}(\Sigma):\Sigma\text{ is a closed minimal surface in }M_j\}.

If the scalar curvature R(Mj)R(M_j) satisfies R(Mj)1jR(M_j)\geq -\frac{1}{j}, then Sormani's conjecture. There is a subsequence MjkM_{j_k} converging in intrinsic flat sense to a flat torus TT, and possibly vol(Mjk)vol(T)\operatorname{vol}(M_{j_k})\to\operatorname{vol}(T). The conjecture refines scalar-curvature stability by imposing volume, diameter, and minimal-area noncollapsing bounds; the supplied text does not state that it has been resolved.

Sources & referencesView supporting material

Primary source

Armando J. Cabrera Pacheco, Christian Ketterer and Raquel Perales, “Stability of graphical tori with almost nonnegative scalar curvature”, arXiv:1902.03458 (2020).

Additional references

2 papers in this index state this conjecture (2018–2019). The statement above is taken from the most recent of them; the others are arXiv:1804.04581.

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