Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1898655 | Journal of Geometry and Physics | 2012 | 7 Pages |
Abstract
We show that four-dimensional Riemannian manifolds which satisfy the Rakić duality principle are Osserman (i.e. the eigenvalues of the Jacobi operator are constant). Thus, since it was proved in Rakić (1999) [9] that Osserman manifolds satisfy the Rakić duality principle, both conditions are equivalent.
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Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
M. Brozos-Vázquez, E. Merino,