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math.DG2025
Codimension two spacelike submanifolds into null hypersurfaces of generalized Robertson-Walker spacetimes
Luis J. Alias, Josue Melendez, Matias Navarro +1
We study codimension two spacelike submanifolds contained into a general class of null hypersurfaces in generalized Robertson-Walker spacetimes, refer to as nullcones. In particula…
math.DG2024
Low regularity approach to Bartnik's conjecture
José Luis Flores, Jónatan Herrera, Didier A. Solis
In this work we establish a version of the Bartnik Splitting Conjecture in the context of Lorentzian length spaces. In precise terms, we show that under an appropriate timelike com…