Results 21 to 30 of about 468 (64)
*-Ricci soliton on (κ, μ)′-almost Kenmotsu manifolds
Open Mathematics, 2019 Let (M, g) be a non-Kenmotsu (κ, μ)′-almost Kenmotsu manifold of dimension 2n + 1. In this paper, we prove that if the metric g of M is a *-Ricci soliton, then either M is locally isometric to the product ℍn+1(−4)×ℝn or the potential vector field is ...
Dai Xinxin, Zhao Yan, Chand De Uday
doaj +1 more source
On contact slant submanifolds in Kenmotsu space forms
, 2012 In this paper a sharp estimate of the maximum Ricci curvature function for a special contact slant submanifold M in a Kenmotsu space form ) (c M , in terms of the main extrinsic invariant namely the squared mean curvature has been obtained.
P. Pandey
semanticscholar +1 more source
Open Mathematics, 2015 In this paper three dimensional real hypersurfaces in non-flat complex space forms whose k-th Cho operator with respect to the structure vector field ξ commutes with the structure Jacobi operator are classified.
Panagiotidou Konstantina +1 more
doaj +1 more source
Generalized (κ,μ)-space forms [PDF]
Mediterr. J. Math. 10 (2013), 475-496, 2008 Generalized (\kappa ,\mu)-space forms are introduced and studied. We examine in depth the contact metric case and present examples for all possible dimensions. We also analyse the trans-Sasakian case.
arxiv +1 more source
Classification of Einstein Lorentzian 3-nilpotent Lie groups with 1-dimensional nondegenerate center [PDF]
arXiv, 2020 We give a complete classification of Einstein Lorentzian 3-nilpotent simply connected Lie groups with 1-dimensional nondegenerate center.
arxiv
Matrix Lie groups as 3-dimensional almost contact B-metric manifolds [PDF]
, 2015 The object of investigation are Lie groups considered as almost contact B-metric manifolds of the lowest dimension three. It is established a correspondence of all basic-class-manifolds of the Ganchev-Mihova-Gribachev classification of the studied ...
Manev, Hristo
core +1 more source
On the structure tensors of almost contact B-metric manifolds
, 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.
Manev, Hristo
core +2 more sources
Pair of associated Schouten-van Kampen connections adapted to an almost contact B-metric structure
, 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.
Manev, Mancho
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Locally Conformal Almost Cosymplectic Manifolds Endowed with a Skew-Symmetric Killing Vector Field [PDF]
, 2004 We study a locally conformal almost cosymplectic manifold M which carries a horizontal skew-symmetric Killing vector field X. Such X denes a relative conformal cosymplectic transformation of the conformal cosymplectic 2-form Ω of M and the square of its ...
Matsumoto Koji +2 more
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A survey on cosymplectic geometry [PDF]
Rev. Math. Phys. 25 (2013), 1343002 (55 pages), 2013 We give an up-to-date overview of geometric and topological properties of cosymplectic and coKaehler manifolds. We also mention some of their applications to time-dependent mechanics.
arxiv +1 more source