Ricci collineations of the Bianchi type II,VIII, and IX space-times |
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Authors: | I Yavuz U Camci |
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Institution: | (1) Art and Science Faculty, Department of Mathematics, Canakkale Onsekiz Mart University, 171 00 Canakkale, Turkey |
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Abstract: | Ricci and contracted Ricci collineations of the Bianchi type II, VIII, and IX space-times, associated with the vector fields of the form (i) one component of
a
(x
b
) is different from zero and (ii) two components of
a
(x
b
) are different from zero, fora, b=1, 2, 3, 4, are presented. In subcase (i.b), which is
a
= (0,
1(x
a
),0,0), some known solutions are found, and in subcase (i.d), which is
a
=(0, 0, 0,
4(x
a
)), choosingS(t) = const.×R(t), the Bianchi type II, VIII, and IX spacetime is reduced to the Robertson-Walker metric. |
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Keywords: | |
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