Cambridge University Press, 1989, 192 p. Naber provides an
elementary introduction to the geometrical methods and notions used
in special and general relativity. Particular emphasis is placed on
the ideas conceed with the structure of space-time and that play
a role in the Penrose-Hawking singularity theorems. The author's
primary purpose is to give a rigorous proof of the simplest of
these theorems, by the one that is representative of the whole. He
provides exercises and examples at the end of each chapter. No
previous exposure either to relativity theory of differential
geometry is required of the reader, as necessary concepts are
developed when needed, though some restrictions ae imposed on the
types of space considered.