Results 1 to 10 of about 82 (79)

On the Canonical Foliation of an Indefinite Locally Conformal Kähler Manifold with a Parallel Lee Form

open access: yesMathematics, 2021
We study the semi-Riemannian geometry of the foliation F of an indefinite locally conformal Kähler (l.c.K.) manifold M, given by the Pfaffian equation ω=0, provided that ∇ω=0 and c=∥ω∥≠0 (ω is the Lee form of M).
Elisabetta Barletta, Sorin Dragomir
exaly   +3 more sources

Infinitesimal Transformations of Locally Conformal Kähler Manifolds

open access: yesMathematics, 2019
The article is devoted to infinitesimal transformations. We have obtained that LCK-manifolds do not admit nontrivial infinitesimal projective transformations. Then we study infinitesimal conformal transformations of LCK-manifolds.
Yevhen Cherevko   +2 more
exaly   +3 more sources

Locally conformal symplectic nilmanifolds with no locally conformal Kähler metrics

open access: yesComplex Manifolds, 2017
We report on a question, posed by L. Ornea and M. Verbitsky in [32], about examples of compact locally conformal symplectic manifolds without locally conformal Kähler metrics.
Giovanni Bazzoni, Juan C Marrero
exaly   +2 more sources

Some Properties of Curvature Tensors and Foliations of Locally Conformal Almost Kähler Manifolds

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2021
We investigate a class of locally conformal almost Kähler structures and prove that, under some conditions, this class is a subclass of almost Kähler structures.
Ntokozo Sibonelo Khuzwayo   +1 more
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

The Concircular Curvature Tensor Of The Locally Conformal Kahler Manifold

open access: yesTikrit Journal of Pure Science, 2019
In this research, we are calculated components conharmonic curvature tensor in some aspects Hermeation manifolding in particular of the Locally Conformal Kahler manifold.
Ali Abdalmajed. Shihab   +1 more
doaj   +1 more source

Example of a six-dimensional LCK solvmanifold

open access: yesComplex Manifolds, 2017
The purpose of this paper is to prove that there exists a lattice on a certain solvable Lie group and construct a six-dimensional locally conformal Kähler solvmanifold with non-parallel Lee form.
Sawai Hiroshi
doaj   +1 more source

Locally conformally Kähler solvmanifolds: a survey

open access: yesComplex Manifolds, 2019
A Hermitian structure on a manifold is called locally conformally Kähler (LCK) if it locally admits a conformal change which is Kähler. In this survey we review recent results of invariant LCK structures on solvmanifolds and present original results ...
Andrada A., Origlia M.
doaj   +1 more source

Topological AdS/CFT

open access: yesJournal of High Energy Physics, 2017
We define a holographic dual to the Donaldson-Witten topological twist of N=2 $$ \mathcal{N}=2 $$ gauge theories on a Riemannian four-manifold. This is described by a class of asymptotically locally hyperbolic solutions to N=4 $$ \mathcal{N}=4 $$ gauged ...
Pietro Benetti Genolini   +2 more
doaj   +1 more source

On locally conformal Kähler space forms

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1985
An m-dimensional locally conformal Kähler manifold (l.c.K-manifold) is characterized as a Hermitian manifold admitting a global closed l-form αλ (called the Lee form) whose structure (Fμλ,gμλ) satisfies ∇νFμλ=−βμgνλ+βλgνμ−αμFνλ+αλFνμ, where ∇λ denotes ...
Koji Matsumoto
doaj   +1 more source

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