2 papers
gr-qc1997
Generalised hyperbolicity in singular space-times
C J S Clarke
A new concept analogous to global hyperbolicity is introduced, based on test fields. It is shown that the space-times termed here ``curve integrable'' are globally hyperbolic in th…
gr-qc1996
Generalised Functions and Distributional Curvature of Cosmic Strings
C J S Clarke, J A Vickers, J P Wilson
A new method is presented for assigning distributional curvature, in an invariant manner, to a space-time of low differentiability, using the techniques of Colombeau's `new general…