On conformally symmetric 2-Ricci-recurrent spaces
On conformally symmetric Ricci-recurrent spaces
On conharmonic curvature tensor in -contact and Sasakian manifolds.
On Conjugate and Focal Points in Semi-Riemannian Geometry.
On connections, geodesics and sprays in synthetic differential geometry
On connections on the second iterated tangent bundle
On contact CR-submanifolds of Sasakian manifolds.
On contact equivalence of holomorphic Monge-Ampére equations.
On contact metric -harmonic manifolds.
On contact -spheres
We study invariant contact -spheres on principal circle-bundles and solve the corresponding existence problem in dimension 3. Moreover, we show that contact - spheres can only exist on -dimensional manifolds and we construct examples of contact -spheres on such manifolds. We also consider relations between tautness and roundness, a regularity property concerning the Reeb vector fields of the contact forms in a contact -sphere.
On contact sub-riemannian symmetric spaces
On continuous mappings between non-negatively and non-positively curved manifolds.
On Convex Hypersurfaces in a Space Form.
On convex hypersurfaces in
On cotangent bundles of some natural bundles
The author studies relations between the following two types of natural operators: 1. Natural operators transforming vector fields on manifolds into vector fields on a natural bundle ; 2. Natural operators transforming vector fields on manifolds into functions on the cotangent bundle of . It is deduced that under certain assumptions on , all natural operators of the second type can be constructed through those of the first one.
On Critical Sets of Distance Functions to a taut Submanifold.
On CR-lightlike product of an indefinite Kaehler manifold.
On CR-submanifolds of the six-dimensional sphere.
On Curvature Characterizations of Some Hypersurfaces in Spaces of Constant Curvature
On curvature collineations on simple conformally recurrent manifolds