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math.DG2018
Some remarks on conformal symmetries and Bartnik's splitting conjecture
Ivan P. Costa e Silva, José Luis Flores, Jónatan Herrera
Inspired by the results in a recent paper by G. Galloway and C. Vega (see arXiv:1712.00785), we investigate a number of geometric consequences of the existence of a timelike confor…
gr-qc2018
A novel notion of null infinity for c-boundaries and generalized black holes
I. P. Costa e Silva, J. L. Flores, J. Herrera
We give new definitions of null infinity and black hole in terms of causal boundaries, applicable to any strongly causal spacetime . These are meant to extend the standard o…