The Sobolev inequality on the Heisenberg group and the Yamabe problem on CR manifolds (d'après travaux avec J. M. Lee)
D. Jerison (1983-1984)
Séminaire Équations aux dérivées partielles (Polytechnique)
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D. Jerison (1983-1984)
Séminaire Équations aux dérivées partielles (Polytechnique)
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Luis Guijarro, Peter Petersen (1997)
Annales scientifiques de l'École Normale Supérieure
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Deane Yang (1992)
Annales scientifiques de l'École Normale Supérieure
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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....
Deane Yang (1987-1988)
Séminaire de théorie spectrale et géométrie
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