Results 1 to 10 of about 3,067,691 (196)

On the Structure Tensors of Almost Contact B-Metric Manifolds [PDF]

open access: yes, 2014
The space of the structure (0,3)-tensors of the covariant derivatives of the structure endomorphism and the metric on almost contact B-metric manifolds is considered.
H. Manev
semanticscholar   +4 more sources

On the existence of almost contact structure and the contact magnetic field [PDF]

open access: yes, 2009
We give a simple proof of the existence of an almost contact metric structure on any orientable 3-dimensional Riemannian manifold (M3, g) with the prescribed metric g as the adapted metric of the almost contact metric structure.
J. Cabrerizo   +2 more
semanticscholar   +3 more sources

Pair of associated Schouten-van Kampen connections adapted to an almost contact B-metric structure [PDF]

open access: yes, 2015
There are introduced and studied a pair of associated Schouten-van Kampen affine connections adapted to the contact distribution and an almost contact B-metric structure generated by the pair of associated B-metrics and their Levi-Civita connections.
M. Manev
semanticscholar   +3 more sources

Parabolic almost contact structures

open access: yesLietuvos Matematikos Rinkinys, 2001
Parabolic analogues of almost contact structures are investigated. Parabolic (φ, ξ, θ, λ)- structure, parabolic metric (φ, ξ, θ, λ)-structure and its properties are defined. Existence of such a structures in hyperstufaces of almost dual spaces is proved;
Angelė Baškienė
doaj   +5 more sources

Almost contact metric and metallic Riemannian structures

open access: yesCommunications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2020
The metallic structure is a fascinating topic that continually generates new ideas. In this work, new metallic manifolds are constructed starting from both almost contact metric manifolds and we obtain some important notions like the metallic deformation.
Beldjilali Gherici
semanticscholar   +5 more sources

Almost contact structures on manifolds with a $G_2$ structure [PDF]

open access: yesAdvances in Theoretical and Mathematical Physics, 2021
We review the construction of almost contact metric (three-) structures on manifolds with a G2 structure. These are of interest for certain supersymmetric configurations in string and M-theory.
Xenia de la Ossa   +2 more
semanticscholar   +1 more source

Normality of almost contact $3$-structure

open access: yesTohoku Mathematical Journal, 1973
K. Yano, S. Ishihara, Mariko Konishi
semanticscholar   +4 more sources

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