Results 31 to 40 of about 779 (266)

Totally geodesic submanifolds of a trans-Sasakian manifold; pp. 249–257 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2013
We consider invariant submanifolds of a trans-Sasakian manifold and obtain the conditions under which the submanifolds are totally geodesic. We also study invariant submanifolds of a trans-Sasakian manifold satisfying Z(X, Y).h = 0, where Z is the ...
Avik De
doaj   +1 more source

Isotropic Lagrangian Submanifolds in Complex Space Forms [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2012
In this paper we study isotropic Lagrangian submanifolds , in complex space forms . It is shown that they are either totally geodesic or minimal in the complex projective space , if . When , they are either totally geodesic or minimal in .
M.B. Kashani
doaj  

Random Manifolds Have No Totally Geodesic Submanifolds [PDF]

open access: yesMichigan Mathematical Journal, 2019
V2: minor changes to address referees' reports, calculations in the local construction have been made more explicit.
Murphy, Thomas, Wilhelm, Frederick
openaire   +3 more sources

CR-submanifolds of a locally conformal Kaehler space form

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
(Bejancu [1,2]) The purpose of this paper is to continue the study of CR-submanifolds, and in particular of those of a locally conformal Kaehler space form (Matsumoto [3]).
M. Hasan Shahid
doaj   +1 more source

Immersions and Embeddings of Totally Geodesic Surfaces [PDF]

open access: yesBulletin of the London Mathematical Society, 1987
It is shown that a hyperbolic 3-manifold of finite volume which contains an immersed totally geodesic surface is finitely covered by a manifold containing an embedding of a totally geodesic surface. This is a special case of a long standing conjecture of Waldhausen.
openaire   +2 more sources

A Classification of a Totally Umbilical Slant Submanifold of Cosymplectic Manifolds

open access: yesAbstract and Applied Analysis, 2012
We study slant submanifolds of a cosymplectic manifold. It is shown that a totally umbilical slant submanifold 𝑀 of a cosymplectic manifold 𝑀 is either an anti-invariant submanifold or a 1−dimensional submanifold.
Siraj Uddin, Cenap Ozel, Viqar Azam Khan
doaj   +1 more source

Totally geodesic subgroups of diffeomorphisms [PDF]

open access: yesJournal of Geometry and Physics, 2002
We determine the Riemannian manifolds for which the group of exact volume preserving diffeomorphisms is a totally geodesic subgroup of the group of volume preserving diffeomorphisms, considering right invariant $L^2$-metrics. The same is done for the subgroup of Hamiltonian diffeomorphisms as a subgroup of the group of symplectic diffeomorphisms in the
Haller, Stefan   +2 more
openaire   +2 more sources

Totally geodesic submanifolds of symmetric spaces, I

open access: yesDuke Mathematical Journal, 1977
One purpose of this article is to establish a general method to determine stability of totally geodesic submanifolds of symmetric spaces. The method is used to determine the stability of the basic totally geodesic submanifolds M+,M introduced and studied by Chen and Nagano in (Totally geodesic submanifolds of symmetric spaces, II, Duke Math. J.
Chen, Bang-yen, Nagano, Tadashi
openaire   +3 more sources

On Totally Contact Umbilical Contact CR-Lightlike Submanifolds Of Indefinite Sasakian Manifolds

open access: yesDemonstratio Mathematica, 2014
After brief introduction, we prove that a totally contact umbilical CR- lightlike submanifold is totally contact geodesic. We obtain a necessary and sufficient condition for a CR-lightlike submanifold to be an anti-invariant submanifold.
Gogna Manish   +2 more
doaj   +1 more source

On Submanifolds of $N(k)$-Quasi Einstein Manifolds with a Type of Semi-Symmetric Metric Connection

open access: yesUniversal Journal of Mathematics and Applications, 2020
In this study, we consider the $ N(k)- $quasi Einstein manifolds with respect to a type of semi-symmetric metric connection. We suppose that the generator of $ N(k)- $quasi-Einstein manifolds is parallel with respect to semi-symmetric metric connection
İnan Ünal
doaj   +1 more source

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