Immersionen mit paralleler zweiter Fundamentalform: Beispiele und Nicht-Beispiele.
Immersions into spheres with parallel higher fundamental forms.
Immersions with Parallel Second Fundamental Form.
Incidence Axioms for the Boundary at Infinity of Complex Hyperbolic Spaces
We characterize the boundary at infinity of a complex hyperbolic space as a compact Ptolemy space that satisfies four incidence axioms.
Infinitesimal Blaschke conjectures on projective spaces
Injectivité de la transformation de Radon sur les grassmanniennes
Invariant analysis and contractions of symmetric spaces : part II
Invariant analysis and contractions of symmetric spaces. Part I
Invariant -structures on the flag manifolds .
Invariant hyperbolic differential operators on an ordered symmetric space. (Opérateurs différentiels invariants hyperboliques sur un espace symétrique ordonné.)
Invariant mesures on homogeneous manifolds of reductive type.
Invariant projectively flat connections and its applications.
Isometric equivalence of directions in Riemannian symmetric spaces.
Isoparametric hypersurfaces with less than four principal curvatures in a sphere
We characterize Clifford hypersurfaces and Cartan minimal hypersurfaces in a sphere by some properties of extrinsic shapes of their geodesics.
Isospectral deformations of the Lagrangian Grassmannians
We study the special Lagrangian Grassmannian , with , and its reduced space, the reduced Lagrangian Grassmannian . The latter is an irreducible symmetric space of rank and is the quotient of the Grassmannian under the action of a cyclic group of isometries of order . The main result of this paper asserts that the symmetric space possesses non-trivial infinitesimal isospectral deformations. Thus we obtain the first example of an irreducible symmetric space of arbitrary rank , which is...