Conditions on the conharmonic curvature tensor of Kähler hypersurfaces in complex space forms.
Conditions on the projective curvature tensor of hypersurfaces in euclidian space
Conditions under which a Geodesic Flow is Anosov.
Cônes asymptotiques et invariants de quasi-isométrie pour les espaces métriques hyperboliques
On utilise l'équivalence due à M. Gromov entre l'hyperbolicité d'un espace métrique géodésique et le fait que ses cônes asymptotiques sont des arbres réels. Ce résultat permet tout d'abord de donner une nouvelle preuve du fait que l'inégalité isopérimétrique sous-quadratique implique l'hyperbolicité. Les avantages de cette preuve sont qu'elle est très courte et qu'elle utilise une seule propriété de la fonction aire de remplissage des courbes fermées, l'inégalité du quadrilatère....
Cones of revolution in doubly isotropic space with fixed radius through a given element of osculation. (Drehkegel des zweifach isotropen Raumes mit festem Radius durch ein gegebenes Oskulationselement.)
Conference on Geometry and Mathematical Physics, Bulgaria, Zlatograd, 28.08-01.09.2005
List of ParticipantsOrganizing committee: Vasil Tsanov – Sofia University (Chairman), Harry Aleksiev – High School for Management and Laguages in Zlatograd (Local Organizer), Leon Farhy – Sofia University (Scientific Secretary), Emil Horozov – Sofia University, Ivailo Mladenov – Bulgarian Academy of Sciences, Angel Zhivkov – Sofia University.
Confomal deformations on a noncompact Riemannian manifold.
Conformal and Isometric Immersions of Riemannian Manifolds.
Conformal and related changes of metric on the product of two almost contact metric manifolds.
This paper studies conformal and related changes of the product metric on the product of two almost contact metric manifolds. It is shown that if one factor is Sasakian, the other is not, but that locally the second factor is of the type studied by Kenmotsu. The results are more general and given in terms of trans-Sasakian, α-Sasakian and β-Kenmotsu structures.
Conformal change of the metric on almost anti-Hermitian manifolds
Conformal complete metrics with prescribed non-negative Gaussian curvature in R2.
Conformal connections on Lyra manifolds.
Conformal curvature for the normal bundle of a conformal foliation
It is proved that the normal bundle of a distribution on a riemannian manifold admits a conformal curvature if and only if is a conformal foliation. Then is conformally flat if and only if vanishes. Also, the Pontrjagin classes of can be expressed in terms of .
Conformal de Rham Hodge theory and operators generalising the -curvature
Conformal deformations of the Riemannian metrics and homogeneous Riemannian spaces
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. Kimelfeld...
Conformal Dirichlet-Neumann maps and Poincaré-Einstein manifolds.
Conformal Duality and Compact Complex Surfaces.
Conformal field theory
Conformal Fields and Stability.
Conformal geometry and global solutions to the Yamabe equations on classical pseudo-Riemannian manifolds