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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.

168,742 papers · 148 categories

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96192287383 · Jun 202019922001200920172026
48 results for mixed weighted Ricci curvature

In this paper, we introduce the weighted mixed (sectional, Ricci and scalar) curvature of a foliated (and almost-product) Riemannian manifold (M,g)(M,g) equipped with a vector field XX. We define several functions (qqth Ricci type curvatures), which "interpolate" between the weighed sectional and Ricci curvatures. The n…

2018-05-04abs ↗pdf ↗

Paper develops methods for estimating gradients of Finslerian Schrödinger equations.

problem Estimating gradients of Finslerian Schrödinger equations.
method Develops new Laplacian comparison theorem and applies it to Finslerian Schrödinger equation.
result Global and local Li-Yau type gradient estimates for positive solutions.

Researchers estimate gradients of solutions to a Finslerian Allen-Cahn equation.

problem Estimating gradients of solutions to a specific type of partial differential equation.
method Using the Finslerian Allen-Cahn equation as an Euler-Lagrange equation to a Liapunov entropy functional, proving gradient estimates on compact and noncompact Finsler metric measure spaces.
result Global and local gradient estimates of positive solutions to the Finslerian Allen-Cahn equation.

Researchers prove constant solutions for a specific Finslerian equation.

problem Investigating exponentially harmonic functions on Finslerian spaces.
method Analyzing the exponential energy functional and using nonnegative Ricci curvature conditions.
result Any bounded solution to the Finslerian equation is constant.

The paper explores mixed curvature for Hermitian manifolds and its implications.

problem Investigating the properties of mixed curvature for Hermitian manifolds.
method Analyzing convex combinations of first Chern Ricci curvature and holomorphic sectional curvature.
result Compact Hermitian surfaces with constant mixed curvature are Kähler unless specific conditions are met.

Study on stable minimal hypersurfaces under Ricci curvature constraints.

problem Stability of weighted minimal hypersurfaces under Ricci curvature bounds.
method Derive geometric consequences and prove a Schoen-Yau type criterion.
result Structure theorem for three-dimensional weighted manifolds of non-negative Ricci curvature.

The paper studies solutions to a nonlinear equation on Finsler manifolds with gradient estimates and Harnack inequalities.

problem Exploring positive solutions to a nonlinear parabolic equation on Finsler manifolds.
method Developed new comparison theorems and used Li-Yau estimates.
result Established gradient estimates and Harnack inequalities for solutions.

In this paper, we introduce the weighted projective Ricci curvature as an extension of projective Ricci curvature introduced by Z. Shen. We characterize the class of Randers metrics of weighted projective Ricci flat curvature. We find the necessary and sufficient condition under which a Kropina metric has weighted proj…

2019-08-26abs ↗pdf ↗

We establish new obstruction results to the existence of Riemannian metrics on tori satisfying mixed bounds on both their sectional and Ricci curvatures. More precisely, from Lohkamp's theorem, every torus of dimension at least three admits Riemannian metrics with negative Ricci curvature. We show that the sectional cu…

2017-07-25abs ↗pdf ↗

The paper proves conditions for projectivity and rational connectedness of complex manifolds with quasi-positive mixed curvature.

problem Conditions for projectivity and rational connectedness of complex manifolds with quasi-positive mixed curvature.
method Convex combination of Ricci curvature and holomorphic sectional curvature, proving projectivity and rational connectedness under specific curvature conditions.
result Compact complex manifolds with quasi-positive mixed curvature are projective and rationally connected under certain conditions.

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.

Study improves Poisson equation solutions on various manifolds.

problem Improving solutions to Poisson equation on different types of manifolds.
method Established L1L^1 estimates for mixed boundary conditions on manifolds with specific curvature properties.
result Generalized existing theorems to broader Riemannian settings.

This paper is devoted to the study of the evolution of positively curved metrics on the Wallach spaces SU(3)/TmaxSU(3)/T_{\max}, Sp(3)/Sp(1)×Sp(1)×Sp(1)Sp(3)/Sp(1)\times Sp(1)\times Sp(1), and F4/Spin(8)F_4/Spin(8). We prove that for all Wallach spaces, the normalized Ricci flow evolves all generic invariant Riemannian metrics with positive sectional curv…

2015-09-30abs ↗pdf ↗

New method calculates Ricci curvature from distances between weighted volumes.

problem Calculating Ricci curvature for weighted Riemannian manifolds.
method Asymptotic retrieval of generalized Ricci tensor from scaled metric derivatives of Wasserstein 1-distances.
result Limiting coarse curvature of random graphs converges to generalized Ricci tensor.

Study geometric properties and physical applications of mixed quasi-Einstein spacetime.

problem Characterize geometric and physical properties of mixed quasi-Einstein spacetime.
method Analyze geometric conditions and curvature tensors on mixed quasi-Einstein and nearly quasi-Einstein manifolds.
result Establish conditions for specific curvature tensors and spacetime structures.

The study examines constant weighted mean curvature hypersurfaces in shrinking Ricci solitons.

problem Characterizing constant weighted mean curvature hypersurfaces in shrinking Ricci solitons.
method Analyzing properties of hypersurfaces in specific ambient spaces (shrinking Ricci solitons).
result Conditions for a constant weighted mean curvature hypersurface to be a level set of the potential function.

We consider a problem of prescribing the partial Ricci curvature on a locally conformally flat manifold (Mn,g)(M^n, g) endowed with the complementary orthogonal distributions D1D_1 and D2D_2. We provide conditions for symmetric (0,2)(0,2)-tensors TT of a simple form (defined on MM) to admit metrics g~\tilde g, conformal to …

2010-10-14abs ↗pdf ↗

Study geometric and topological properties of Finsler manifolds with weighted Ricci curvature bounds.

problem Geometric and topological properties of Finsler metric measure manifolds with integral weighted Ricci curvature bounds.
method Establish Laplacian comparison theorem, volume comparison theorems, volume growth estimate, Gromov pre-compactness, local Dirichlet isoperimetric constant estimate.
result First Dirichlet eigenvalue estimate and gradient estimate for harmonic functions.

Study on Kähler manifolds with non-negative mixed curvature, proving splitting and structure theorems.

problem Investigating properties of Kähler manifolds with specific curvature conditions.
method Conformal perturbation method.
result Established structure and splitting theorems for Kähler manifolds with non-negative mixed curvature.

The study analyzes weighted manifolds with curvature bounds, proving eigenvalue estimates and inequalities.

problem Analyzing geometric properties of weighted manifolds under Ricci curvature bounds.
method Develops geometric analysis techniques on weighted Riemannian manifolds with lower 00-weighted Ricci curvature bounds.
result Proves eigenvalue estimates for Steklov and ABP inequalities on weighted manifolds.

A flow of metrics, gtg_t, on a manifold is a solution of a differential equation $\dt g = S(g)$, where a geometric functional S(g)S(g) is a symmetric (0,2)(0,2)-tensor usually related to some kind of curvature. The mixed sectional curvature of a foliated manifold regulates the deviation of leaves along the leaf geodesics. W…

2013-08-05abs ↗pdf ↗

The paper studies constant kkth-mixed curvature on Hermitian manifolds and finds self-duality and Kähler conditions.

problem Investigating constant kkth-mixed curvature on Hermitian manifolds.
method Analyzing Hermitian manifolds with convex combinations of Chern Ricci curvature and holomorphic sectional curvature.
result Compact Hermitian surfaces with constant kkth-mixed curvature are self-dual, and if k=2k=2, the metric is Kähler.

Paper extends Aronson-Bénilan estimates for porous medium equations on manifolds with negative curvature.

problem Estimating gradients for porous medium equations on manifolds with negative curvature.
method Develops Aronson-Bénilan gradient estimates for porous medium equations under lower bounds of NN-weighted Ricci curvature with N<0N < 0.
result Generalizes gradient estimates for porous medium equations to manifolds with negative curvature.

Study improves understanding of Ricci curvature in manifolds.

problem Understanding Ricci curvature in manifolds with specific assumptions.
method Exploring m-intermediate Ricci curvature and proving comparison theorems.
result Stable weighted slicing in manifolds with non-negative m-intermediate Ricci curvature has almost non-negative Ricci curvature.

Paper proves new theorems about curvature in weighted manifolds.

problem Understanding curvature in weighted manifolds.
method Proved spectral comparison and splitting theorems for infinity-Bakry-Emery Ricci curvature.
result Results extend existing theorems and provide new supplements.

Study compares manifolds with boundary under weighted Ricci curvature bounds.

problem Understand geometric properties of manifolds with boundary under lower weighted Ricci curvature bounds.
method Use lower NN-weighted Ricci curvature bounds with ε\varepsilon-range to study comparison geometry.
result Conclude splitting theorems and comparison geometric results for inscribed radius, volume, and eigenvalues.

Sharp isoperimetric inequality on Finsler manifolds with non-negative Ricci curvature.

problem Proving an isoperimetric inequality on Finsler metric measure manifolds.
method Defining volume entropy and second Cheeger constant, proving sharp inequality.
result Sharp isoperimetric inequality involving volume entropy and weighted Ricci curvature.

Ricci-Filtration enhances retrieval-augmented generation rerankers for query-answer tasks by using discrete Ricci flow on graphs.

problem Improving retrieval-augmented generation rerankers for query-answer tasks.
method Discrete Ricci flow on graphs to evaluate structural importance of chunks.
result Ricci-Filtration outperforms baseline methods in accuracy, precision, recall, and F1 scores.

Study complete manifolds with weighted Poincaré inequality and Ricci curvature bounds.

problem Understanding the structure of complete manifolds with specific curvature and inequality conditions.
method Analyzing manifolds with weighted Poincaré inequality and Ricci curvature bounds.
result Obtained splitting results for manifolds with non-zero weight function limit at infinity.

The study establishes inequalities on Finsler manifolds with weighted Ricci curvature.

problem Investigating inequalities on Finsler manifolds with weighted Ricci curvature.
method Volume comparison, Bonnet-Myers theorem, Poincaré-Lichnerowicz inequality.
result Sharp lower bound for the first eigenvalue on Finsler manifolds.

Paper investigates rigidity phenomena for weighted Ricci curvature bounds with Laplacian comparison theorem.

problem Investigating rigidity phenomena for weighted Ricci curvature bounds.
method Derived comparison geometric estimates and generalized for non-symmetric Laplacian.
result Obtained rigidity results for Laplacian comparison theorem, diameter comparisons, and volume comparisons.

The paper extends spin geometry to weighted manifolds and defines a new mass for Ricci flow.

problem Generalizing spin geometry to weighted manifolds and defining a new mass.
method Investigates spectral properties of the weighted Dirac operator and defines a new mass.
result Defines a new mass for weighted asymptotically Euclidean manifolds and shows its monotonicity under Ricci flow.

The paper defines and analyzes curvature tensors on super twisted product spaces.

problem Investigating curvature tensors on super twisted product spaces.
method Defined W2W_2-curvature tensor, computed curvature tensors and Ricci tensors, and studied curvature flatness.
result Mixed Ricci-flat super twisted product semi-Riemannian manifolds can be expressed as super warped product manifolds.

Study semilinear equations on weighted manifolds to prove rigidity.

problem Prove rigidity of weighted manifolds via classification of semilinear equations.
method Classify positive solutions at the Sobolev-critical exponent, proving rigidity and weight triviality.
result Existence of positive solutions implies rigidity and weight triviality under certain curvature conditions.

The paper proves inequalities under Bakry-Émery-Ricci curvature bounds.

problem Proving functional inequalities under lower Bakry-Émery-Ricci curvature bounds.
method Lower mm-Bakry-Émery-Ricci curvature bounds with ε\varepsilon-range.
result Proves Cheng type inequality and local Sobolev inequality.