Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1998-02-22
Physica Scripta, vol.66, No.6, pp.401-409, 2002
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
18 standard LaTeX 2e pages. The packages AMS-LaTeX and amsfonts are required
Scientific paper
10.1238/Physica.Regular.066a0040
We discuss and investigate the problem of existence of metric-compatible
linear connections for a given space-time metric which is, generally, assumed
to be semi-pseudo-Riemannian. We prove that under sufficiently general
conditions such connections exist iff the rank and signature of the metric are
constant. On this base we analyze possible changes of the space-time signature.
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