c-boundary of Taub’s plane-symmetric static vacuum spacetime

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Abstract
To describe singularities using the notion of c-boundary, it is necessary to divide the c-boundary into two portions, one of them represents the singularity while the other represents infinity. By investigating the global structure of Taub’s plane-symmetric static spacetime in detail we prove that the singular portion of the c-boundary of this spacetime is a single point. This suggests that it might not be fruitful describing the structure of singularities using the c-boundary construction. The possible difficulty in singling out the ‘‘singular portion’’ of the c-boundary is also discussed.

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