The existence problem of hyperbolic structures on vector bundles.
Bejan, Cornelia-Livia (1993)
Publications de l'Institut Mathématique. Nouvelle Série
Similarity:
Bejan, Cornelia-Livia (1993)
Publications de l'Institut Mathématique. Nouvelle Série
Similarity:
Domingo Chinea, Juan Carlos Marrero, Juan Rocha (1995)
Annales de la Faculté des sciences de Toulouse : Mathématiques
Similarity:
Farran, H.R., Zanoun, M.S. (1989)
Publications de l'Institut Mathématique. Nouvelle Série
Similarity:
Fumio Narita (1996)
Colloquium Mathematicae
Similarity:
We consider a Riemannian submersion π: M → N, where M is a CR-submanifold of a locally conformal Kaehler manifold L with the Lee form ω which is strongly non-Kaehler and N is an almost Hermitian manifold. First, we study some geometric structures of N and the relation between the holomorphic sectional curvatures of L and N. Next, we consider the leaves M of the foliation given by ω = 0 and give a necessary and sufficient condition for M to be a Sasakian manifold.
Blair, David (2002)
Serdica Mathematical Journal
Similarity:
∗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,...
Mihai, I., Verstraelen, L., Rosca, R. (1996)
International Journal of Mathematics and Mathematical Sciences
Similarity:
Yoshiyuki Watanabe, Hiroshi Mori (1998)
Archivum Mathematicum
Similarity:
We construct a family of almost quaternionic Hermitian structures from an almost contact metric 3-structure and also do three kinds of quaternionic Kähler structures from a Sasakian 3-structure. In particular we have a generalization of the second main result of Boyer-Galicki-Mann [5].
Yaning Wang (2016)
Annales Polonici Mathematici
Similarity:
We prove that a three-dimensional almost Kenmotsu manifold is locally symmetric if and only if it is locally isometric to either the hyperbolic space ℍ³(-1) or the Riemannian product ℍ²(-4)×ℝ.