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This article is cited in 3 scientific papers (total in 3 papers)
Symmetries of Lorentzian Three-Manifolds with Recurrent Curvature
Giovanni Calvarusoa, Amirhesam Zaeimb a Dipartimento di Matematica e Fisica “E. De Giorgi”, Università del Salento, Prov. Lecce-Arnesano, 73100 Lecce, Italy
b Department of Mathematics, Payame Noor University, P.O. Box 19395-3697, Tehran, Iran
Abstract:
Locally homogeneous Lorentzian three-manifolds with recurrect curvature are special examples of Walker manifolds, that is, they admit a parallel null vector field. We obtain a full classification of the symmetries of these spaces, with particular regard to symmetries related to their curvature: Ricci and matter collineations, curvature and Weyl collineations. Several results are given for the broader class of three-dimensional Walker manifolds.
Keywords:
Walker manifolds; Killing vector fields; affine vector fields; Ricci collineations; curvature and Weyl collineations; matter collineations.
Received: February 12, 2016; in final form June 17, 2016; Published online June 26, 2016
Citation:
Giovanni Calvaruso, Amirhesam Zaeim, “Symmetries of Lorentzian Three-Manifolds with Recurrent Curvature”, SIGMA, 12 (2016), 063, 12 pp.
Linking options:
https://www.mathnet.ru/eng/sigma1145 https://www.mathnet.ru/eng/sigma/v12/p63
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Abstract page: | 185 | Full-text PDF : | 54 | References: | 39 |
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