A rigidity result on the ideal boundary structure of smooth space-times
arXiv:gr-qc/9806072 · doi:10.1088/0264-9381/15/9/027
Abstract
Following a survey of the abstract boundary definition of Scott and Szekeres, a rigidity result is proved for the smooth case, showing that the topological structure of the regular part of this boundary in invariantly defined.
14 pages, 2 figures; to appear in Clas. Quant. Grav