A functional expression for the curvature of hyper-dimensional Riemannian spaces.
Sarić, Branko (2000)
Lobachevskii Journal of Mathematics
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Sarić, Branko (2000)
Lobachevskii Journal of Mathematics
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John J. O'Sullivan, Jost-Hinrich Eschenburg (1980)
Mathematische Annalen
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Adam Kowalczyk (1984)
Banach Center Publications
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M. T. K. Abbassi, Giovanni Calvaruso (2012)
Archivum Mathematicum
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We completely classify Riemannian -natural metrics of constant sectional curvature on the unit tangent sphere bundle of a Riemannian manifold . Since the base manifold turns out to be necessarily two-dimensional, weaker curvature conditions are also investigated for a Riemannian -natural metric on the unit tangent sphere bundle of a Riemannian surface.
Brozos-Vázquez, Miguel, Fiedler, Bernd, García-Río, Eduardo, Gilkey, Peter, Nikčević, Stana, Stanilov, Grozio, Tsankov, Yulian, Vázquez-Lorenzo, Ramón, Videv, Veselin (2007)
SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
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Yana Alexieva, Stefan Ivanov (1999)
Archivum Mathematicum
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Riemannian manifolds for which a natural skew-symmetric curvature operator has constant eigenvalues on helices are studied. A local classification in dimension three is given. In the three dimensional case one gets all locally symmetric spaces and all Riemannian manifolds with the constant principal Ricci curvatures , which are not locally homogeneous, in general.
Isaac Chavel (1967)
Commentarii mathematici Helvetici
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Yuri Nikolayevsky, Zoran Rakić (2013)
Publications de l'Institut Mathématique
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