on einstein (α,β )-metrics
نویسندگان
چکیده
– in this paper we consider some (α ,β ) -metrics such as generalized kropina, matsumoto and f (α β )2α = + metrics, and obtain necessary and sufficient conditions for them to be einstein metrics when βis a constant killing form. then we prove with this assumption that the mentioned einstein metrics must beriemannian or ricci flat.
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عنوان ژورنال:
iranian journal of science and technology (sciences)ISSN 1028-6276
دوره 32
شماره 4 2008
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