Conservation laws and string-like matter distributions
Constancy of maps into -manifolds and pseudo -manifolds.
Constant Curvature 2-spheres in the 4-sphere.
Constant Jacobi osculating rank of
In this paper we obtain an interesting relation between the covariant derivatives of the Jacobi operator valid for all geodesic on the flag manifold . As a consequence, an explicit expression of the Jacobi operator independent of the geodesic can be obtained on such a manifold. Moreover, we show the way to calculate the Jacobi vector fields on this manifold by a new formula valid on every g.o. space.
Constant mean curvature hypersurfaces with constant -invariant.
Constant mean curvature palnes with inner rotational symmetry in Euclidean 3-space.
Constant mean curvature surfaces bounded by a circle.
Constant mean curvature surfaces constructed by fusing Wente tori.
Constant mean curvature surfaces in -space forms
Constant mean curvature surfaces with two ends in hyperbolic space.
Constant mean curvature tori in terms of elliptic functions.
Constant Mean Curvature Tori with spherical curvature lines in noneuclidean geometry.
Constant scalar curvature hypersurfaces with spherical boundary in Euclidean space.
It is still an open question whether a compact embedded hypersurface in the Euclidean space with constant mean curvature and spherical boundary is necessarily a hyperplanar ba1l or a spherical cap, even in the simplest case of a compact constant mean curvature surface in R3 bounded by a circle. In this paper we prove that this is true for the case of the scalar curvature. Specifica1ly we prove that the only compact embedded hypersurfaces in the Euclidean space with constant scalar curvature and...
Constant scalar curvature metrics on connected sums.
Constantes explicites pour les inégalités de Sobolev sur les variétés riemanniennes compactes
L’objet de cette étude est de trouver des constantes explicites (dépendant d’un minimum d’invariants riemanniens et les plus faibles possible) dans différents types d’inégalités de Sobolev.
Constructing conformally flat structures on some Seifert fibred 3-manifolds.
Constructing equivariant maps for representations
We show that if is a discrete subgroup of the group of the isometries of , and if is a representation of into the group of the isometries of , then any -equivariant map extends to the boundary in a weak sense in the setting of Borel measures. As a consequence of this fact, we obtain an extension of a result of Besson, Courtois and Gallot about the existence of volume non-increasing, equivariant maps. Then, we show that the weak extension we obtain is actually a measurable -equivariant...
Construction de métriques d’Einstein à partir de transformations biconformes
L’objectif de cet article est de proposer une nouvelle méthode de construction de métriques d’Einstein. Le procédé consiste à considérer un morphisme harmonique ; on déforme ensuite biconformément la métrique en , en conservant l’harmonicité, ce qui simplifie le calcul de la courbure de Ricci. L’équation se traduit alors en un système différentiel en termes des paramètres de la déformation. On montre d’abord l’existence de solutions par un procédé dynamique. Puis, on résout ce système dans...
Construction de revêtements du groupe conforme d’un espace vectoriel muni d’une «métrique» de type
Construction de surfaces à courbure moyenne constante