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https://arxiv.org/abs/1705.07496 [1705.07496] Almost Rigidity of the Positive Mass Theorem for Asymptotically Hyperbolic Manifolds... Abstract page for arXiv paper 1705.07496: Almost Rigidity of the Positive Mass Theorem for Asymptotically Hyperbolic Manifolds with Spherical Symmetry positive mass theoremhyperbolic manifoldsalmostrigidityasymptotically https://www.math.harvard.edu/event/positive-mass-theorem-for-aleae-and-alfaf-toric-4-manifolds/ Positive mass theorem for ALE(AE) and ALF(AF) Toric 4-Manifolds - Harvard Math Apr 15, 2025 - One of the fundamental conjectures in mathematical relativity is the positivity of total mass (if it is defined!) for complete non-compact Riemannian manifolds... positive mass theoremalealftoricmanifolds