One of the most of exciting aspects is the general relativity pred- tion
of black holes and the Such Big Bang. predictions gained weight the
theorems through Penrose. singularity pioneered In various by te- books
on theorems general relativity singularity are and then presented used
to that black holes exist and that the argue universe started with a To
date what has big been is bang. a critical of what lacking analysis
these theorems predict-' We of really give a proof a typical singul-
theorem and this ity use theorem to illustrate problems arising through
the of possibilities violations" and "causality weak "shell very
crossing These singularities". add to the problems weight of view that
the point theorems alone singularity are not sufficient to the existence
of predict physical singularities. The mathematical theme of the book In
order to both solid gain a of and intuition understanding good for any
mathematical theory, one, should to realise it as model of try a a fam-
iar non-mathematical theories have had concept. Physical an especially
the important on of and impact development mathematics, conversely
various modern theories physical rather require sophisticated mathem-
ics for their formulation. both and mathematics Today, physics are so
that it is often difficult complex to master the theories in both very
s- in the of jects. However, case differential pseudo-Riemannian
geometry or the general relativity between and mathematics relationship
physics is and it is therefore especially close, to from interd-
possible profit an ciplinary approach.