see Equations (5) – (7) of [50]. Clearly, the connection between the coordinates, the metric components
and the topology is more complicated in the case of S3 and S2 × S1 than in the case of T3. We shall not
go into a detailed discussion of these issues here, but rather refer the interested reader to [21
] and [50
] for a
further discussion. A brief explanation of the origin of the name (in terms of polarizations of
gravitational waves) as well as a different characterization is provided at the bottom of [70,
p. 65].
http://www.livingreviews.org/lrr-2010-2 |
Living Rev. Relativity 13, (2010), 2
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