Results 11 to 20 of about 140,369 (157)

ON SLANT SUBMANIFOLDS OF NEUTRAL KAEHLER MANIFOLDS [PDF]

open access: yesTaiwanese Journal of Mathematics, 2010
An indefinite Riemannian manifold is called neutral it its index is equal to one half of its dimension and an indefinite Kaehler manifold is called neutral Kaehler if its complex index is equal to the half of its complex dimension. In the first part of this article, we extend the notion of slant surfaces in Lorentzian Kaehler surfaces to slant ...
Arslan, K.   +3 more
core   +10 more sources

CR submanifolds of a Kaehler manifold. II [PDF]

open access: yesTransactions of the American Mathematical Society, 1978
The differential geometry of CR submanifolds of a Kaehler manifold is studied. Theorems on parallel normal sections and on a special type of flatness of the normal connection on a CR submanifold are obtained.
Aurel Bejancu
openaire   +3 more sources

Some submersions of CR-hypersurfaces of Kaehler-Einstein manifold [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
The Riemannian submersions of a CR-hypersurface M of a Kaehler-Einstein manifold M˜ are studied. If M is an extrinsic CR-hypersurface of M˜, then it is shown that the base space of the submersion is also a Kaehler-Einstein manifold.
Vittorio Mangione
doaj   +3 more sources

Generic submanifolds of a locally conformal Kaehler manifold-II

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1993
The purpose of this paper is to study generic submanifolds with parallel structures, generic product submanifolds and totally umbilical submanifolds of a locally conformal Kaehler manifold.
M. Hasan Shahid, Kouei Sekigawa
doaj   +2 more sources

Warped product semi-slant submanifolds in locally conformal Kaehler manifolds

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2017
In 1994, in [13], N. Papaghiuc introduced the notion of semi-slant submanifold in a Hermitian manifold which is a generalization of CR- and slant-submanifolds. In particular, he considered this submanifold in Kaehlerian manifolds, [13]. Then, in 2007, V.
Koji Matsumoto
doaj   +3 more sources

Totally Umbilical Hemi-Slant Submanifolds of Kaehler Manifolds

open access: yesAbstract and Applied Analysis, 2011
We study totally umbilical hemi-slant submanifolds of a Kaehler manifold via curvature tensor. We prove some classification theorems for totally umbilical hemi-slant submanifolds of a Kaehler manifold and give an example.
Falleh R. Al-Solamy   +2 more
doaj   +2 more sources

Quaternion CR-submanifolds of a quaternion Kaehler manifold

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
We study the quaternion CR-submanifolds of a quaternion Kaehler manifold. More specifically we study the properties of the canonical structures and the geometry of the canonical foliations by using the Bott connection and the index of a quaternion CR ...
Bassil J. Papantoniou, M. Hasan Shahid
doaj   +2 more sources

On totally umbilical CR-submanifolds of a Kaehler manifold

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1993
Let M be a compact 3-dimensional totally umbilical CR-submanifold of a Kaehler manifold of positive holomorphic sectional curvature. We prove that if the length of the mean curvature vector of M does not vanish, then M is either diffeomorphic to S3 or ...
M. A. Bashir
doaj   +2 more sources

A note on a totally umbilical proper slant submanifold of a nearly Kaehler manifold

open access: yesKuwait Journal of Science, 2013
In this paper, we study totally umbilical proper slant submanifolds of a nearly Kaehler manifold. We prove that every totally umbilical proper slant submanifold of a nearly Kaehler manifold is totally geodesic.  
KHUSHWANT SINGH   +2 more
doaj   +1 more source

Hemi-Slant Warped Product Submanifolds of Nearly Kaehler Manifolds [PDF]

open access: yesAbstract and Applied Analysis, 2014
Hemi-slant warped product submanifolds of nearly Kaehler manifolds are studied and some interesting results are obtained. Moreover, an inequality is established for squared norm of second fundamental form and equality case is also discussed.
Falleh R. Al-Solamy, Meraj Ali Khan
doaj   +2 more sources

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