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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

169,051 papers · 148 categories

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72145217289 · Jun 202019922001200920182026
48 results for multiple solitons

The study shows ends of shrinking gradient ρρ-Einstein solitons are non-parabolic.

problem Characterizing the ends of shrinking gradient ρρ-Einstein solitons.
method Proving non-parabolicity of ends and connectivity at infinity for specific conditions.
result Gradient shrinking ρρ-Einstein solitons have non-parabolic ends under certain conditions.

This paper solves a complex equation using Lie symmetry approach to find solitary wave and multiple soliton solutions.

problem Solving a (3 + 1)-dimensional KdV type equation.
method Lie group of transformation method to find infinitesimal generators and commutator table.
result Exact solutions of KdV type equation in explicit form.

Gradient almost para-Ricci-like solitons have constant coefficients and scalar curvatures.

problem Characterizing gradient almost para-Ricci-like solitons on para-Sasaki-like Riemannian ΠΠ-manifolds.
method Proving constant coefficients and scalar curvatures through analysis of soliton properties.
result Constant coefficients and scalar curvatures for gradient almost para-Ricci-like solitons.

We study the evolution of homogeneous Ricci solitons under the bracket flow, a dynamical system on the space of all homogeneous spaces of dimension n with a q-dimensional isotropy, which is equivalent to the Ricci flow for homogeneous manifolds. We prove that algebraic solitons (i.e. the Ricci operator is a multiple of…

2012-10-12abs ↗pdf ↗

Study on a new type of solitons on specific geometric manifolds.

problem Characterizing new types of solitons in geometric structures.
method Generalization of Ricci-like solitons with specific properties and conditions.
result Conditions for these solitons to be equivalent to almost Einstein-like metrics.

Study of para-Ricci-like solitons on specific Riemannian manifolds.

problem Characterizing para-Ricci-like solitons on para-Sasaki-like Riemannian ΠΠ-manifolds.
method Introduced and studied para-Ricci-like solitons with arbitrary potential. Proved properties of Ricci tensor and scalar curvatures.
result Ricci tensor is a constant multiple of the vertical component of both metrics, leading to equal and constant scalar curvatures.

The paper characterizes a class of almost Kenmotsu manifolds with quasi Yamabe solitons.

problem Characterizing almost Kenmotsu manifolds with quasi Yamabe solitons.
method Analyzing the properties of quasi Yamabe solitons on (k,μ)(k,μ)'-almost Kenmotsu manifolds.
result If a (k,μ)(k,μ)'-almost Kenmotsu manifold admits a quasi Yamabe soliton, then VV is a constant multiple of ξξ, VV is a strict infinitesimal contact transformation, and (£Vh)X=0(£_V h')X = 0 for any vector field XX.

Kähler-Ricci solitons can be immersed into complex space forms if and only if the manifold is Einstein.

problem Characterizing Kähler-Ricci solitons that can be immersed into complex space forms.
method Proving that a Kähler-Ricci soliton's metric is Einstein if it can be immersed into a complex space form.
result The Kähler-Ricci soliton's metric is an Einstein metric if it can be immersed into a complex space form.

The study of quasi Yamabe solitons on 3D contact metric manifolds with specific curvature condition.

problem Investigating quasi Yamabe solitons on 3D contact metric manifolds with a specific curvature condition.
method Analyzing the properties of quasi Yamabe solitons on 3D contact metric manifolds with Qφ = φQ and proving the conditions under which the soliton vector field is constant, the scalar curvature is constant, and the manifold is Sasakian.
result If a 3D contact metric manifold M with Qφ = φQ admits a quasi Yamabe soliton with a non-zero soliton vector field V collinear with the Reeb vector field ξ, then V is a constant multiple of ξ, the scalar curvature is constant, and the manifold is Sasakian.

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.

Study on Ricci solitons and related metrics in 3D trans-Sasakian manifolds.

problem Exploring metrics like Ricci solitons in 3D trans-Sasakian manifolds.
method Analyzing properties of metrics and structure functions in 3D trans-Sasakian manifolds.
result Characterization of Ricci solitons and scalar curvature in 3D trans-Sasakian manifolds.

The study examines perfect fluid spacetimes and their properties.

problem Characterizing properties of perfect fluid spacetimes with concircular vector fields.
method Analyzing the conformal curvature tensor, state equation, and solitons in perfect fluid spacetimes.
result Perfect fluid spacetimes with concircular vector fields have specific properties related to the state equation and solitons.

The Ward equation, also called the modified 2+1 chiral model, is obtained by a dimension reduction and a gauge fixing from the self-dual Yang-Mills field equation on R2,2R^{2,2}. It has a Lax pair and is an integrable system. Ward constructed solitons whose extended solutions have distinct simple poles. He also used a li…

2004-05-19abs ↗pdf ↗

We give necessary and sufficient conditions for a Kähler equivariant resolution of a Kähler cone, with the resolution satisfying one of a number of auxiliary conditions, to admit a unique asymptotically conical (AC) expanding gradient Kähler-Ricci soliton. In particular, it follows that for any nN0n\in\mathbb{N}_{0} and…

2016-07-12abs ↗pdf ↗

We consider a class of time dependent finite energy multi-soliton solutions of the U(N) integrable chiral model in (2+1)(2+1) dimensions. The corresponding extended solutions of the associated linear problem have a pole with arbitrary multiplicity in the complex plane of the spectral parameter. Restrictions of these exten…

2006-05-18abs ↗pdf ↗

Study classifies gradient almost Ricci solitons with harmonic Weyl tensor.

problem Characterizing the local structure of gradient almost Ricci solitons with harmonic Weyl tensor.
method Local representation as multiply warped products, analysis of eigenvalues, and classification based on Weyl tensor properties.
result Classification of gradient almost Ricci solitons with harmonic Weyl tensor, extending previous results.

E. Cartan proved that conformally flat hypersurfaces in S^{n+1} for n>3 have at most two distinct principal curvatures and locally envelop a one-parameter family of (n-1)-spheres. We prove that the Gauss-Codazzi equation for conformally flat hypersurfaces in S^4 is a soliton equation, and use a dressing action from sol…

2008-03-19abs ↗pdf ↗

In this paper, we study entire translating solutions u(x)u(x) to a mean curvature flow equation in Minkowski space. We show that if Σ={(x,u(x))xRn}Σ=\{(x, u(x))| x\in\mathbb{R}^n\} is a strictly spacelike hypersurface, then ΣΣ reduces to a strictly convex rank k soliton in Rk,1\mathbb{R}^{k, 1} (after splitting off trivial factors) wh…

2015-05-07abs ↗pdf ↗

All known examples of nontrivial homogeneous Ricci solitons are left-invariant metrics on simply connected solvable Lie groups whose Ricci operator is a multiple of the identity modulo derivations (called solsolitons, and nilsolitons in the nilpotent case). The tools from geometric invariant theory used to study Einste…

2010-02-02abs ↗pdf ↗

Study optimal partition problem for Q-curvature equations on Einstein manifolds.

problem Optimal partition problem for prescribed Q-curvature equation.
method Cohomogeneity one actions, higher order conformal operators, weakly coupled elliptic systems.
result Existence and multiplicity of least energy symmetric and sign-changing solutions.

We classify Algebraic Ricci Solitons of three-dimensional Lorentzian Lie groups. All algebraic Ricci solitons that we obtain are sol-solitons. In particular, we prove that, contrary to the Riemannian case, Lorentzian Ricci solitons need not to be algebraic Ricci solitons. We classify Algebraic Ricci Solitons of three-d…

2011-12-12abs ↗pdf ↗

Study on Ricci-Bourguignon solitons and almost solitons, generalizing previous results.

problem Analyzing solitons and almost solitons in the context of Ricci-Bourguignon flow.
method Generalizing results for Ricci solitons and introducing Ricci-Bourguignon almost solitons, proving results and deriving integral formulas.
result Compact gradient Ricci-Bourguignon almost solitons with constant scalar curvature or conformal associated vector field are isometric to Euclidean spheres.

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.

Study on ηη-Ricci-Yamabe solitons on Riemannian submersions.

problem Characterizing ηη-Ricci-Yamabe solitons on Riemannian submersions.
method Analyzing conditions for ηη-Ricci-Yamabe solitons on submersions and deriving Laplacian equations.
result Classification of fiber and target manifolds as ηη-Ricci-Yamabe solitons under various conditions.

The paper studies *-Ricci solitons and gradient almost *-Ricci solitons on Kenmotsu manifolds.

problem Investigating properties of *-Ricci solitons and gradient almost *-Ricci solitons on Kenmotsu manifolds.
method Analyzing the metric properties and vector fields of Kenmotsu manifolds to derive conditions for *-Ricci solitons and gradient almost *-Ricci solitons.
result Characterizations of *-Ricci solitons and gradient almost *-Ricci solitons on Kenmotsu manifolds, including conditions for constant curvature and Einstein metrics.

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.

Study on p-biharmonic maps from gradient Ricci solitons, focusing on 2D cigar soliton.

problem Understanding p-biharmonic maps on gradient Ricci solitons.
method Analyzing p-biharmonic maps from gradient Ricci solitons, specifically 2D cigar soliton.
result Obtained results on p-biharmonic maps from gradient Ricci solitons, particularly on 2D cigar soliton.

The study characterizes spacetimes with specific solitons in f(R)f(\mathcal{R})-gravity.

problem Characterizing spacetimes with specific solitons in f(R)f(\mathcal{R})-gravity.
method Analyzing ηη-Ricci solitons, gradient ηη-Ricci solitons, gradient Einstein Solitons, and gradient mm-quasi Einstein solitons in perfect fluid spacetimes obeying f(R)f(\mathcal{R})-gravity.
result Established conditions for the behavior of ηη-Ricci solitons and derived significant theorems about dark matter.

Researchers study solitons on homogeneous manifolds, proving properties of specific types of solitons.

problem Examining solitons on homogeneous manifolds to understand their properties and constraints.
method Analyzing ambient obstruction flow and specific solitons in homogeneous spaces, proving properties and constructing examples.
result Proved that any compact ambient obstruction soliton with constant scalar curvature is trivial, and characterized specific types of solitons in 4-dimensional homogeneous spaces.

Characterizes *-kk-Ricci-Yamabe solitons on Kenmotsu manifolds.

problem Understanding *-kk-Ricci-Yamabe solitons on Kenmotsu manifolds.
method Analyzes the geometry of *-kk-Ricci-Yamabe solitons and gradient solitons on Kenmotsu manifolds.
result Characterizes the nature of *-kk-Ricci-Yamabe solitons and gradient solitons.

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.

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.

Study on warped product Yamabe solitons with constant fiber curvature.

problem Characterizing nontrivial warped product Yamabe gradient solitons.
method Investigation of warped product manifolds, derivation of scalar curvature estimates.
result Nontrivial warped product Yamabe gradient solitons have constant scalar curvature in the fiber.