A hyperbolic twistor space.
A locally symmetric Kähler Einstein structure on the cotangent bundle of a space form.
A new proof of the existence of hierarchies of Poisson-Nijenhuis structures.
A non-homogeneous, symmetric contact projective structure
We construct a non-homogeneous contact projective structure which is symmetric from the point of view of parabolic geometries.
A note on almost s-tangent structures
A note on -conformally flat contact manifolds.
A Product Twistor Space
∗Research supported in part by NSF grant INT-9903302.In previous work a hyperbolic twistor space over a paraquaternionic Kähler manifold was defined, the fibre being the hyperboloid model of the hyperbolic plane with constant curvature −1. Two almost complex structures were defined on this twistor space and their properties studied. In the present paper we consider a twistor space over a paraquaternionic Kähler manifold with fibre given by the hyperboloid of 1-sheet, the anti-de-Sitter plane...
A proof of Weinstein’s conjecture in
À propos des deuxième et troisième espaces de cohomologie de l'algèbre de Lie de Poisson d'une variété symplectique
A pseudo-Riemannian metric on the tangent bundle of a Riemannian manifold.
A remark on compact symplectic manifolds not admitting complex structures
A Study on -recurrence -curvature tensor in -contact metric manifolds
In this paper we study -recurrence -curvature tensor in-contact metric manifolds.
A survey on Nambu-Poisson brackets.
A symplectic reduction for pseudo-Riemannian manifolds with compatible almost product structures.
A Symplectic Rigidity Theorem.
A theorem on metric polynomial structures
Abelian complex structures on 6-dimensional compact nilmanifolds
We classify the -dimensional compact nilmanifolds that admit abelian complex structures, and for any such complex structure we describe the space of symplectic forms which are compatible with .
Abelian complex structures on solvable Lie algebras.
Actions of discrete groups on nonpositively curved spaces.
Affine connections on almost para-cosymplectic manifolds
Identities for the curvature tensor of the Levi-Cività connection on an almost para-cosymplectic manifold are proved. Elements of harmonic theory for almost product structures are given and a Bochner-type formula for the leaves of the canonical foliation is established.