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17345067 · Jun 202019922001200920172026
48 results for almost Ricci-Bourguignon solitons

We prove some results for the solitons of the Ricci-Bourguignon flow, generalizing corresponding results for Ricci solitons. Taking motivation from Ricci almost solitons, we then introduce the notion of Ricci-Bourguignon almostalmost solitons and prove some results about them which generalize previous results for Ricci alm…

2018-09-28abs ↗pdf ↗

The paper studies integral formulas for a specific type of soliton.

problem Integral formulas for compact gradient h-almost Ricci-Bourguignon solitons.
method Investigation of integral formulas and proving properties of solitons.
result Compact, non-trivial h-almost Ricci-Bourguignon solitons are isometric to a Euclidean sphere under certain conditions.

The paper studies a new soliton on Kenmotsu manifolds and derives its scalar curvature.

problem Characterizing a new soliton on Kenmotsu manifolds.
method Analyzing the κ\ast-\boldsymbolκ-Ricci-Bourguignon almost soliton on Kenmotsu structure manifolds.
result Derivation of the scalar curvature for a Kenmotsu manifold with the κ\ast-\boldsymbolκ-Ricci-Bourguignon soliton.

Study clarifies almost Ricci-Bourguignon solitons and their properties.

problem Understanding the properties of almost Ricci-Bourguignon solitons.
method Revisit and compare with known results of Barros and Ribeiro.
result Identify conditions for compact almost RB-solitons to be trivial or have special properties.

The study explores rigid constraints on almost Ricci-Bourguignon solitons on contact metric three-manifolds.

problem Investigating constraints on almost Ricci-Bourguignon solitons on contact metric three-manifolds.
method Using a local orthonormal \(\varphi\)-basis, derived the full component form of the almost Ricci-Bourguignon soliton equation.
result For contact metric three-manifolds satisfying \(Qξ=σξ\), a collinear potential field must vanish on the non-Sasakian region whenever \(ξ(σ)=0\).

Study on mixed Killing vector fields on Cigar Ricci-Bourguignon solitons.

problem Characterizing mixed Killing vector fields on Cigar Ricci-Bourguignon solitons.
method Analyzing the condition LVLVg=fLVgL_V L_V g = f\,L_V g and using rigidity phenomena.
result Dimension of complete mixed Killing fields is 5 and a basis is explicitly determined.

New solitons defined for Sasaki-like almost contact complex Riemannian manifolds.

problem Characterizing new solitons in Sasaki-like almost contact complex Riemannian manifolds.
method Defined ββ-Ricci-Bourguignon-like almost solitons with special potential.
result Characterized geometrically and constructed examples of new solitons.

The paper characterizes \ast-Ricci-Bourguignon solitons on Kenmotsu manifolds.

problem Characterizing \ast-Ricci-Bourguignon solitons on Kenmotsu manifolds.
method Analyzing conditions for compressing, balancing, or enlarging \ast-Ricci-Bourguignon on Kenmotsu manifolds; estimating curvature properties; featuring with torse-forming vector fields; providing an example.
result Found conditions and curvature properties for \ast-Ricci-Bourguignon solitons on Kenmotsu manifolds.

Study on Ricci-Bourguignon solitons on specific product spaces.

problem Characterizing Ricci-Bourguignon solitons on sequential warped products.
method Obtained necessary conditions for solitons to be Einstein manifolds under specific potential fields.
result Conditions for Ricci-Bourguignon solitons to be Einstein are identified.

Sharp inequalities and solitons studied in statistical submersions.

problem Understanding geometric properties of statistical submersions.
method Proving sharp inequalities and establishing geometrical properties of statistical submersions.
result Characterization of fibers as Ricci-Bourguignon solitons with conformal vector field.

Study vector fields on hyperbolic spaces to create Ricci-Bourguignon solitons.

problem Characterize vector fields on hyperbolic spaces Hn\mathbb{H}^n that transform them into Ricci-Bourguignon solitons.
method Detailed geometric study of vector fields in dimensions n=2,3n=2, 3 and n3n\geq 3, focusing on dual forms in odd dimensions.
result Dual forms of these vectors are contact forms in odd dimensions.

The study characterizes mixed super quasi-Einstein manifolds with Ricci-Bourguignon solitons.

problem Characterizing mixed super quasi-Einstein manifolds with Ricci-Bourguignon solitons.
method Exploring properties of mixed super quasi-Einstein manifolds, including conformal Ricci pseudosymmetry and Einstein's field equation. Characterizing manifolds that admit Ricci-Bourguignon solitons and providing a detailed eigenvalue problem characterization.
result Characterization of mixed super quasi-Einstein manifolds with Ricci-Bourguignon solitons, including a detailed eigenvalue problem and an example construction.

Study geometric and analytical properties of ρρ-Einstein solitons.

problem Characterize geometric and analytical features of ρρ-Einstein solitons.
method Analyze the spectrum of the drifted Laplacian operator and prove volume growth estimates.
result Establish new volume growth estimates for geodesic balls of complete noncompact ρρ-Einstein solitons.

In this paper we present some results on a family of geometric flows introduced by Bourguignon that generalize the Ricci flow. For suitable values of the scalar parameter involved in these flows, we prove short time existence and provide curvature estimates. We also state some results on the associated solitons.

2015-07-01abs ↗pdf ↗

The study examines Riemann solitons and almost solitons on specific Kenmotsu manifolds.

problem Characterizing solitons on Kenmotsu manifolds.
method Analysis of Riemann solitons and gradient almost Riemann solitons on almost Kenmotsu manifolds.
result Construction of examples of Kenmotsu and (κ,μ)(κ,μ)'-almost Kenmotsu manifolds.

The study classifies h-almost Ricci-Yamabe solitons in various paracontact manifolds.

problem Classifying h-almost Ricci-Yamabe solitons in paracontact geometry.
method Characterization and classification of para-Kenmotsu, para-Sasakian, and para-cosymplectic manifolds.
result Characterizations and classifications of various paracontact manifolds.

The paper explores almost Ricci solitons on Finsler spaces, proving conditions for their existence.

problem Characterizing almost Ricci solitons on Finsler measure spaces.
method Introducing and investigating gradient almost Ricci solitons, proving conditions for existence.
result Conditions for the existence of gradient almost Ricci solitons on Finsler measure spaces.

In this paper, we completely classify almost Yamabe solitons on hypersurfaces in Euclidean spaces arisen from the position vector field. Some results of almost Yamabe solitons with a concurrent vector field and almost Yamabe solitons on submanifolds in Riemannian manifolds equipped with a concurrent vector field are al…

2017-11-13abs ↗pdf ↗

The article investigates almost Riemann solitons and gradient almost Riemann solitons in a specific type of manifold.

problem Investigating almost Riemann solitons and gradient almost Riemann solitons in a non-cosymplectic normal almost contact metric manifold.
method Analyzing properties of the manifold and its metrics under specific conditions.
result Established conditions under which almost Riemann solitons and gradient almost Riemann solitons reduce to known types of solitons or have specific properties.

We introduce the concept {\it hh-almost Ricci soliton} which extends naturally the {\it almost Ricci soliton} by Pigola-Rigoli-Rimoldi-Setti and show that a compact nontrivial hh-almost Ricci soliton of dimension no less than three with hh having defined signal and constant scalar curvature is isometric to a standar…

2014-11-24abs ↗pdf ↗

Study on solitons in specific geometric manifolds, proving manifold properties and presenting examples.

problem Exploring solitons in almost coKähler and asymptotically harmonic manifolds.
method Analyzing ηη-Einstein and gradient ηη-Einstein solitons in various geometric frameworks.
result Proves manifold properties and presents examples validating results.

Study on gradient h-almost Yamabe solitons with scalar curvature estimation.

problem Exploring triviality and scalar curvature estimation of gradient h-almost Yamabe solitons.
method Established sufficient conditions for triviality and scalar curvature estimation under integral inequalities involving the scalar curvature and soliton function.
result Extended and refined former works on almost and h-almost Yamabe solitons, characterizing their geometric structures.

The paper investigates geometrical aspects of static spacetime with almost gradient Ricci solitons.

problem Geometrical properties of static spacetime with almost gradient Ricci solitons.
method Analyzing conditions and properties of static spacetime with almost gradient Ricci solitons.
result Conditions and properties of static spacetime with almost gradient Ricci solitons are determined.

The study explores δ-almost gradient Yamabe solitons on pseudo-Riemannian manifolds.

problem Characterizing δ-almost gradient Yamabe solitons on pseudo-Riemannian manifolds.
method Analyzing δ-almost Yamabe solitons within the framework of para-contact metric manifolds, proving properties and conditions for solitons.
result Characterization of δ-almost gradient Yamabe solitons on K-paracontact metric manifolds.

The paper examines conditions for a vector field to be Killing in almost Yamabe solitons.

problem Conditions for a vector field to be Killing in almost Yamabe solitons.
method Investigation of almost Yamabe solitons on compact and non-compact manifolds.
result Sufficient conditions for the defining conformal vector field to be Killing.

In this article we study an almost ff-cosymplectic manifold admitting a Ricci soliton. We first prove that there do not exist Ricci solitons on an almost cosymplectic (κ,μ)(κ,μ)-manifold. Further, we consider an almost ff-cosymplectic manifold admitting a Ricci soliton whose potential vector field is the Reeb vector fie…

2018-01-13abs ↗pdf ↗

Gradient estimates for a parabolic PDE under Ricci-Bourguignon flow on warped product manifolds.

problem Analyzing the Ricci-Bourguignon flow on warped product manifolds.
method Establishing gradient estimates for a parabolic partial differential equation.
result Gradient estimates for the parabolic PDE provide analytic input for geometric applications.

Study on Ricci-like solitons and gradient solitons on specific manifolds.

problem Characterizing solitons on Sasaki-like almost contact B-metric manifolds.
method Introduced and studied Ricci-like solitons with arbitrary potential and gradient solitons. Proved properties of the Ricci tensor and soliton coefficients.
result Gradient almost Ricci-like solitons have constant soliton coefficients.

The paper characterizes Kenmotsu metrics as almost *-Ricci solitons.

problem Characterizing Kenmotsu metrics as almost *-Ricci solitons.
method Analyzing the geometry of almost contact metrics through *-Ricci solitons.
result Kenmotsu metrics are characterized as almost *-Ricci solitons under specific conditions.

The study examines almost Ricci-Yamabe solitons on almost Kenmotsu manifolds and their properties.

problem Characterizing almost Ricci-Yamabe solitons on almost Kenmotsu manifolds.
method Analyzing the conditions for almost Ricci-Yamabe solitons to be η-Einstein and proving local isometry for certain manifolds.
result Properties of almost Ricci-Yamabe solitons on (2n+1)(2n+1)-dimensional (κ,μ)(κ, μ)'-AKMs.

The aim of this article is to study the k-almost Ricci soliton and k-almost gradient Ricci soliton on contact metric manifold. First, we prove that if a compact K-contact metric is a k-almost gradient Ricci soliton then it is isometric to a unit sphere S2n+1. Next, we extend this result on a compact k-almost Ricci soli…

2018-01-15abs ↗pdf ↗

The paper introduces and characterizes almost ω-Bach solitons on various product manifolds.

problem Characterizing almost ω-Bach solitons on different manifolds.
method Introducing ωω-Bach tensor and defining almost ω-Bach solitons; characterizing them under specific conditions.
result Explicitly found gradient almost ω-Bach solitons on specific product manifolds.

The paper proves estimates for a specific flow on compact manifolds.

problem Proving estimates for the Ricci-Bourguignon flow.
method Hamilton-Ivey estimates for the Ricci-Bourguignon flow on compact manifolds with n=3n=3 and ρ<0ρ<0.
result Compact ancient solutions have nonnegative sectional curvature for all negative ρρ.

The paper characterizes gradient solitons in specific manifold types.

problem Characterizing gradient solitons in almost Kenmotsu manifolds.
method Analyzing (m,ρ)(m,ρ)-quasi Einstein solitons within two classes of almost Kenmotsu manifolds.
result Characterized gradient (m,ρ)(m,ρ)-quasi Einstein solitons in specific manifold types.

The paper explores *-conformal ηη-Ricci solitons in Kenmotsu manifolds.

problem Characterizing *-conformal ηη-Ricci solitons in Kenmotsu manifolds.
method Analyzing the properties of Kenmotsu metrics and manifolds under *-conformal ηη-Ricci solitons.
result Kenmotsu metrics as *-conformal ηη-Ricci solitons are Einstein if the soliton vector field is contact.

Characterizes potential function of almost conformal Ricci solitons on Sasakian manifolds.

problem Characterizing potential functions of almost conformal Ricci solitons on Sasakian manifolds.
method Characterization through the potential function ff and non-dynamical scalar field pp.
result Established a sufficient condition for an almost conformal Ricci soliton to be an almost conformal gradient Ricci soliton.

Gradient Ricci almost solitons were introduced by Pigola, Rigoli, Rimoldi and Setti. They are defined as solitons except that the metric coefficient is required to be a smooth function rather than a constant. It is shown that any almost soliton is conformal to another almost soliton having a soliton function which is m…

2013-01-02abs ↗pdf ↗