Riemannian metrics with harmonic curvature on 2-sphere bundles over compact surfaces
Andrzej Derdziński (1988)
Bulletin de la Société Mathématique de France
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Andrzej Derdziński (1988)
Bulletin de la Société Mathématique de France
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Amine Fawaz (2007)
Open Mathematics
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We compute the energy of conformal flows on Riemannian manifolds and we prove that conformal flows on manifolds of constant curvature are critical if and only if they are isometric.
Hijazi, Oussama, Raulot, Simon (2007)
SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
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Oldřich Kowalski, Masami Sekizawa (2008)
Archivum Mathematicum
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We shall survey our work on Riemannian geometry of tangent sphere bundles with arbitrary constant radius done since the year 2000.
Leitner, Felipe
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Joyce, Dominic (2003)
International Journal of Mathematics and Mathematical Sciences
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Eugene D. Rodionov, Viktor V. Slavskii (2002)
Commentationes Mathematicae Universitatis Carolinae
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In this paper we investigate one-dimensional sectional curvatures of Riemannian manifolds, conformal deformations of the Riemannian metrics and the structure of locally conformally homogeneous Riemannian manifolds. We prove that the nonnegativity of the one-dimensional sectional curvature of a homogeneous Riemannian space attracts nonnegativity of the Ricci curvature and we show that the inverse is incorrect with the help of the theorems O. Kowalski-S. Nikčevi'c [K-N], D. Alekseevsky-B....