Hawking Mass Compactness conjecture

From papers

Let Mj3M_j^3 be a sequence of three-dimensional oriented manifolds satisfying

Vol(Mj)V0,Vol(Mj)=A0,Diam(Mj)D0.\operatorname{Vol}(M_j)\le V_0,\qquad \operatorname{Vol}(\partial M_j)=A_0,\qquad \operatorname{Diam}(M_j)\le D_0.

Assume also

Scalarj0,HMj0,mH(Mj)m0,\operatorname{Scalar}_j\ge 0,\qquad H_{\partial M_j}\ge 0,\qquad m_H(\partial M_j)\le m_0,

and either that there are no closed interior minimal surfaces or that MinA(Mj)A1>0\operatorname{MinA}(M_j)\ge A_1>0. Hawking Mass Compactness conjecture. A subsequence should converge in the intrinsic flat sense, with

MjkFM,M(Mjk)M(M),M_{j_k}\stackrel{\mathcal F}{\longrightarrow}M_\infty, \qquad {\mathbf M}(M_{j_k})\to {\mathbf M}(M_\infty),

and MM_\infty should satisfy the scalar-curvature and Hawking-mass bounds in some generalized sense. One might replace Hawking mass by another quasilocal mass. This is known in the rotationally symmetric setting when there are no closed interior minimal surfaces, but the general compactness statement remains open.

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Sources & referencesView supporting material

Primary source

Christina Sormani, “Scalar Curvature and Intrinsic Flat Convergence”, arXiv:1606.08949 (2016).

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