Results 121 to 130 of about 157 (140)

Ricci almost soliton and almost Yamabe soliton on Kenmotsu manifold

Asian-European Journal of Mathematics, 2020
We prove that a Ricci almost soliton on a Kenmotsu manifold of dimension [Formula: see text] reduces to an expanding Ricci soliton satifying certain condition on the potential vector field or on the soliton function. Next, we show that any Ricci almost soliton on a Kenmotsu manifold is trivial (Einstein) if the soliton vector leaves the contact form ...
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K-contact metrics as Ricci almost solitons

Beiträge zur Algebra und Geometrie / Contributions to Algebra and Geometry, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Yamabe Solitons and Ricci Solitons on Almost co-Kähler Manifolds

Canadian Mathematical Bulletin, 2019
AbstractThe object of this paper is to study Yamabe solitons on almost co-Kähler manifolds as well as on $(k,\unicode[STIX]{x1D707})$-almost co-Kähler manifolds. We also study Ricci solitons on $(k,\unicode[STIX]{x1D707})$-almost co-Kähler manifolds.
Suh, Young Jin, De, Uday Chand
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ALMOST CONTACT 3-MANIFOLDS AND RICCI SOLITONS

International Journal of Geometric Methods in Modern Physics, 2012
A Kenmotsu 3-manifold M admitting a Ricci soliton (g, w) with a transversal potential vector field w (orthogonal to the Reeb vector field) is of constant sectional curvature -1. A cosymplectic 3-manifold admitting a Ricci soliton with the Reeb potential vector field or a transversal vector field is of constant sectional curvature 0.
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Ricci Solitons on Almost Co-Kähler Manifolds

Canadian Mathematical Bulletin, 2018
AbstractIn this paper, we prove that if an almost co-Kähler manifold of dimension greater than three satisfying $\unicode[STIX]{x1D702}$-Einstein condition with constant coefficients is a Ricci soliton with potential vector field being of constant length, then either the manifold is Einstein or the Reeb vector field is parallel.
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Certain Contact Metrics as Ricci Almost Solitons

Results in Mathematics, 2013
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Almost Ricci solitons and $$K$$ K -contact geometry

Monatshefte für Mathematik, 2014
There are two theorems in this paper, both pertaining to almost Ricci solitons. The first one is actually a theorem of \textit{A. Barros} et al. [Monatsh. Math. 174, No. 1, 29--39 (2014; Zbl 1296.53092)] stating that a compact almost Ricci soliton with constant scalar curvature is gradient and isometric to a Euclidean sphere.
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Almost Ricci solitons on pseudo Ricci symmetric spacetime

International Journal of Geometric Methods in Modern Physics
The purpose of this paper is to examine the geometric properties of an almost Ricci soliton on a pseudo Ricci symmetric spacetime that satisfies the Einstein field equation. Among other results, we first determine the soliton constant and the cosmological constant in terms of the scalar curvature and the potential vector field of the spacetime ...
Akhilesh Yadav, Tarun Saxena, S. S. Shukla   +2 more
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Some results on h-almost Ricci-Bourguignon soliton

Afrika Matematika, 2022
Shahroud Azami, Azami Shahroud
exaly  

Characterization of Ricci Almost Soliton on Lorentzian Manifolds

Symmetry, 2023
Yanlin Li, H Aruna Kumara, Devaraja Mallesha Naik   +2 more
exaly