Geometric inequality conjecture for asymptotically Euclidean immersions

Let nn and qq be integers such that n3n\geq3 and 0<q<n/20<q<n/2, and let ψ ⁣:MnRd\psi\colon M^n\to\mathbb{R}^d, with d>nd>n, be an asymptotically Euclidean immersion of order τ>τq\tau>\tau_q. Let S2qS_{2q} and S2q+1S_{2q+1} denote the corresponding higher mean curvatures, let Zˉ\bar Z be the Euclidean position vector, and assume that S2qS_{2q} is integrable and nonnegative.

Geometric inequality conjecture. One has

(n2q)MS2qdM+(2q+1)MS2q+1,ZˉdM0,(n-2q)\int_M S_{2q}\,\mathrm{d}M+(2q+1)\int_M\langle S_{2q+1},\bar Z\rangle\,\mathrm{d}M\geq0,

with equality if and only if (M,ψδˉ)(M,\psi^*\bar\delta) is isometric to Euclidean space.

Together with the conjectured existence of asymptotically Euclidean isometric immersions, this would imply the positive mass conjecture for the Gauss--Bonnet--Chern mass through the paper's mass identity. The source gives no resolution of this conjecture.

Sources & referencesView supporting material

Primary source

Alexandre de Sousa and Frederico Girão, “Mass from an Extrinsic Point of View”, arXiv:2403.06782 (2025).

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