Results 21 to 30 of about 10,201 (226)

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

On the type constancy of some six-dimensional planar submanifolds of Cayley algebra

open access: yesДифференциальная геометрия многообразий фигур, 2023
The notion of type constancy was introduced by Alfred Gray for nearly Kählerian manifolds and later generalized by Vadim F. Kirichenko and Irina V. Tret’yakova for all Gray — Hervella classes of almost Her­mitian manifolds.
G. A. Banaru
doaj   +1 more source

Non-Bivariational Time-Dependent Orbital-Quasi-Optimized Coupled-Cluster Methods Family for Fermion-Mixtures Dynamics. [PDF]

open access: yesJ Comput Chem
ABSTRACT Recently, [JCP 161, 114114 (2024)] successfully derived numerically stable and converging (to the time‐dependent complete active space self‐consistent‐field) time‐dependent orthogonal coupled cluster (CC) methods, namely, time‐dependent orbital optimized CC (TD‐ooCC) methods for fermion‐mixtures with arbitrary fermion kinds and numbers, via ...
Lang H, Sato T.
europepmc   +2 more sources

Inflexible CR submanifolds [PDF]

open access: yesMathematische Zeitschrift, 2016
to appear in Math ...
Brinkschulte, Judith, Denson Hill, C.
openaire   +2 more sources

Weak helix submanifolds of euclidean spaces [PDF]

open access: yes, 2009
It is shown that there exist nonstrong weak 2-helix surfaces of ...
Di Scala, Antonio Jose'
core   +1 more source

A Comprehensive Survey on Parallel Submanifolds in Riemannian and Pseudo-Riemannian Manifolds

open access: yesAxioms, 2019
A submanifold of a Riemannian manifold is called a parallel submanifold if its second fundamental form is parallel with respect to the van der Waerden−Bortolotti connection.
Bang-Yen Chen
doaj   +1 more source

Some results on the geometry of warped product CR-submanifolds in quasi-Sasakian manifold

open access: yesCubo, 2022
The present paper deals with a study of warped product submanifolds of quasi-Sasakian manifolds and warped product CR-submanifolds of quasi-Sasakian manifolds.
Shamsur Rahman
doaj   +1 more source

On Generic submanifolds of a locally conformal Kahler manifold with parallel canonical structures

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
The study of CR-submanifolds of a Kähler manifold was initiated by Bejancu [1]. Since then many papers have appeared on CR-submanifolds of a Kähler manifold.
M. Hasan shahid, A. Sharfuddin
doaj   +1 more source

Super parallel immersions in Euclidean space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
Two submanifolds of Euclidean n-space En are called super parallel if the affine normal spaces are homothetic at the corresponding points. Characterizations are given for the action of conformal transformation on super parallel mates.
Tarek Fathy Mersal   +1 more
doaj   +1 more source

Calibrated Submanifolds [PDF]

open access: yes, 2020
We provide an introduction to the theory of calibrated submanifolds through the key examples related with special holonomy. We focus on calibrated geometry in Calabi-Yau, G$_2$ and Spin(7) manifolds, and describe fundamental results and techniques in the field.
openaire   +2 more sources

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