Results 11 to 20 of about 374,684 (258)
Contact and Almost Contact Structures on the Real Extension of the Lobachevsky Plane
Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, 2021 In this article, we propose a group model G of a real extension of the Lobachevsky plane H2 × R . The group G is a Lie group of special-form matrices and a subgroup of the general linear group GL(3, R). It is proved that, on the group model of the real extension of the Lobachevsky plane, there is a unique left-invariant almost contact metric structure ...
V.I. Pan’zhenskii, A.O. Rastrepina
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Parabolic almost contact structures
Lietuvos 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; some examples of these structures are given.
Angelė Baškienė
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Almost complex structure over almost contact metric structures [PDF]
AUT Journal of Mathematics and ComputingIn this paper, we investigate the conditions under which a lifted almost complex structure $J$ on the tangent bundle $TM$ of a manifold $M$ exhibits various Kählerian properties.
Akbar Sadighi +1 more
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ALMOST PSEUDO CONTACT STRUCTURE
Communications of the Korean Mathematical Society, 2011 A new kind of structure is introduced in an even dimen- sional difierentiable Riemannian manifold and some basic properties of this structure is discussed. Also the existence of such structure is shown with an example.
Pratyay Debnath, Arabinda Konar
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From Dual Connections to Almost Contact Structures
Mathematics, 2022 A dualistic structure on a smooth Riemaniann manifold M is a triple (M,g,∇) with g a Riemaniann metric and ∇ an affine connection generally assumed to be torsionless. From g and ∇, dual connection ∇* can be defined.
Emmanuel Gnandi, Stéphane Puechmorel
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On Generalized D-Conformal Deformations of Certain Almost Contact Metric Manifolds
Mathematics, 2019 In this work, we consider almost contact metric manifolds. We investigate the generalized D-conformal deformations of nearly K-cosymplectic, quasi-Sasakian and β -Kenmotsu manifolds.
Mehmet Solgun +2 more
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On the Normality of an Almost Contact 3-Structure on QR-Submanifolds [PDF]
Czechoslovak Mathematical Journal, 2003 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Funabashi, S., Pak, J. S., Shin, Y. J.
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Harmonic Almost Contact Structures [PDF]
Geometriae Dedicata, 2006 23 ...
Vergara-Diaz, E., Wood, C.M.
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Prolonged almost quazi-Sasakian structures
Дифференциальная геометрия многообразий фигур, 2021 The notion of an almost quasi-Sasakian manifold is introduced. A manifold with an almost quasi-Sasakian structure is a generalization of a quasi-Sasakian manifold; the difference is that an almost quasi-Sasakian manifold is almost normal.
S.V. Galaev
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Contact Twistor Spaces and Almost Contact Metric Structures [PDF]
Mediterranean Journal of Mathematics, 2016 typos corrected, minor ...
Davidov, Johann, Yankov, Christian L.
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