3 years ago

The annoying null boundaries.

Piotr T. Chruściel, Paul Klinger

We consider a class of globally hyperbolic space-times with "expanding singularities". Under suitable assumptions we show that no $C^0$-extensions across a compact boundary exist, while the boundary must be null wherever differentiable (which is almost everywhere) in the non-compact case.

Publisher URL: http://arxiv.org/abs/1801.06037

DOI: arXiv:1801.06037v1

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