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Quasi-Statistical Manifolds with Almost Hermitian and Almost Anti-Hermitian Structures

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
Let (M, g, ∇) be a 2n-dimensional quasi-statistical manifold that admits a pseudo-Riemannian metric g (or h) and a linear connection ∇ with torsion. This paper aims to study an almost Hermitian structure (g, J ) and an almost anti-Hermitian structure (h,
Aktaş Buşra, Gezer Aydin, Durmaz Olgun
doaj   +2 more sources

Product of Almost-Hermitian Manifolds [PDF]

open access: yesThe Journal of Geometric Analysis, 2012
This is a continuous work about the nonexistence of some complete metrics on the product of two manifolds studied by Tam-Yu [Asian Journal of Mathematics, 14(2010)]. Motivated by the result of Tossati [Comm.Anal.Geom. 15(2007)]. We generalize the corresponding results of Tam-Yu [Asian Journal of Mathematics, 14(2010)] to the almost-Hermitian case.
Fan, Xu-Qian   +2 more
openaire   +6 more sources

A note on η-quasi-umbilical hypersurfaces in almost Hermitian manifolds

open access: yesДифференциальная геометрия многообразий фигур, 2023
In the present note, we consider the introduced by Lidia Vasil’evna Stepanova notion of an -quasi-umbilical hypersurface in an almost Her­mitian manifold.
M. B. Banaru
doaj   +1 more source

Nearly Sasakian Manifolds of Constant Type

open access: yesAxioms, 2022
The article deals with nearly Sasakian manifolds of a constant type. It is proved that the almost Hermitian structure induced on the integral manifolds of the maximum dimension of the first fundamental distribution of the nearly Sasakian manifold is a ...
Aligadzhi Rustanov
doaj   +1 more source

On a k-th Gauduchon almost Hermitian manifold

open access: yesComplex Manifolds, 2022
We characterize the k-th Gauduchon condition and by applying its characterization, we reprove that a compact k-th Gauduchon, semi-Kähler manifold becomes quasi-Kähler, which tells us that in particular, a compact almost pluriclosed, semi-Kähler manifold ...
Kawamura Masaya
doaj   +1 more source

On nearly Kählerian manifolds and quasi-Sasakian hypersurfaces axiom

open access: yesДифференциальная геометрия многообразий фигур, 2021
It is known that an almost contact metric structure is induced on an arbitrary hypersurface of an almost Hermitian manifold. The case when the almost Hermitian manifold is nearly Kählerian and the almost contact metric structure on its hypersurface is ...
G.A. Banaru
doaj   +1 more source

Almost Hermitian 6-manifolds revisited [PDF]

open access: yesJournal of Geometry and Physics, 2005
26 pages, revised ...
Alexandrov, Bogdan   +2 more
openaire   +3 more sources

Almost Kaehlerian and Hermitian Structures on Four Dimensional Indecomposable Lie Algebras

open access: yesUniversal Journal of Mathematics and Applications, 2022
It is known that from a given almost Hermitian structure on a simply connected Liegroup, one can obtain left-invariant almost Hermitian structure on its Lie algebra.In this work, we consider Mubarakzyanov’s classification of four-dimensional realLie ...
Mehmet Solgun
doaj   +1 more source

Curvature of special almost Hermitian manifolds [PDF]

open access: yesPacific Journal of Mathematics, 2006
We study the curvature of almost Hermitian manifolds and their special analogues via intrinsic torsion and representation theory. By deriving different forumlae for the skew-symmetric part of the star-Ricci curvature, we find that some of these contributions are dependent on the approach used, and for the almost Hermitian case we obtain tables that ...
Martín, Francisco Cabrera   +1 more
openaire   +4 more sources

Almost-complex invariants of families of six-dimensional solvmanifolds

open access: yesComplex Manifolds, 2022
We compute almost-complex invariants h∂¯p,oh_{\bar \partial }^{p,o}, hDolp,oh_{Dol}^{p,o} and almost-Hermitian invariants hδ¯p,oh_{\bar \delta }^{p,o} on families of almost-Kähler and almost-Hermitian 6-dimensional solvmanifolds.
Tardini Nicoletta, Tomassini Adriano
doaj   +1 more source

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