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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.

168,695 papers · 148 categories

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242484726968 · Jun 202019922001200920172026
48 results for flow problem

Study solves a generalized Christoffel-Minkowski problem using curvature flow.

problem Generalization of the LpL_{p}-Christoffel-Minkowski problem.
method Anisotropic curvature flow to derive long-time existence and smooth solutions.
result Existence of smooth solutions for c=1c=1 under certain initial data.

Study of a flow related to the Orlicz-Minkowski problem for convex hypersurfaces.

problem Orlicz-Minkowski problem involving Gauss curvature and support function.
method Generalized Gauss curvature flow for convex hypersurfaces in Euclidean n-space.
result Long-time existence and convergence of the flow, leading to existence results for the Orlicz-Minkowski problem.

Study an anisotropic capillary flow to solve capillary Orlicz-Minkowski problem.

problem Solve capillary Orlicz-Minkowski problem without evenness assumption.
method Analyze an anisotropic capillary Gauss curvature flow to prove convergence and establish existence.
result Establish existence result for capillary Orlicz-Minkowski problem without evenness assumption.

Optical flow refers to the visual motion observed between two consecutive images. Since the degree of freedom is typically much larger than the constraints imposed by the image observations, the straightforward formulation of optical flow as an inverse problem is ill-posed. Standard approaches to determine optical flow…

2016-11-04abs ↗pdf ↗

A method for estimating signal distributions from inverse problems using normalizing flows.

problem Estimating the distribution of the underlying signal from observations in inverse problems.
method A framework for approximate inference on a pre-trained unconditional flow model, using a composition of two flow models for stable variational inference.
result Our method produces high-quality samples with uncertainty quantification and can be amortized for zero-shot inference.

In this work, we propose a new evolving geometric flow (called translating mean curvature flow) for the translating solitons of hypersurfaces in Rn+1R^{n+1}. We study the basic properties, such as positivity preserving property, of the translating mean curvature flow. The Dirichlet problem for the graphical translating m…

2016-12-12abs ↗pdf ↗

Let us consider a projective manifold and ΩΩ a volume form. We define the gradient flow associated to the problem of ΩΩ-balanced metrics in the quantum formalism, the Ωbalacingflow.Atthelimitofthequantization,weprovethatthe-balacing flow. At the limit of the quantization, we prove that the ΩbalacingflowconvergestowardsanaturalflowinKa¨hlergeometry,the-balacing flow converges towards a natural flow in Kähler geometry, the Ω$-Kä…

2011-02-05abs ↗pdf ↗

Study anisotropic flows solving Orlicz-Minkowski problems, proving existence and new results.

problem Anisotropic non-homogeneous Gauss curvature flows and Orlicz-Minkowski problems.
method Long-time existence and behavior analysis, parabolic approximation method, curvature flow.
result Existence and new results for Orlicz-Minkowski problems, including LpL_p versions.

Efficiently solves inverse problems with diffusion and flow models in just a few steps.

problem Solving inverse problems like super-resolution, inpainting, or deblurring using diffusion or flow models.
method Conditional Conjugate Integrators framework that projects inverse problem dynamics into a more amenable space for sampling.
result Generates high-quality samples in as few as 5 conditional sampling steps, outperforming competing methods.

Study anisotropic inverse Gauss curvature flows and solve dual Orlicz Minkowski problems.

problem Solving dual Orlicz Minkowski problems for anisotropic flows.
method Anisotropic inverse Gauss curvature flows and stationary solutions.
result New existence results for dual Orlicz Minkowski problems for smooth measures.

The paper solves a generalized Christoffel-Minkowski problem using a curvature flow.

problem Solving the (p,q)-Christoffel-Minkowski problem.
method Investigating the problem via an expanding curvature flow.
result Existence and uniqueness of smooth solutions to the (p,q)-Christoffel-Minkowski problem.

The paper solves curvature problems on infinite hyperbolic surfaces.

problem Prescribed curvature flow on hyperbolic surfaces with infinite topological type.
method Introduced a prescribed curvature flow adapted to infinite cellular decompositions.
result Established well-posedness of the flow and proved convergence under certain conditions.

Variational approximations for curve flows on Riemannian manifolds.

problem Approximating solutions to curvature and elastic flow problems on Riemannian manifolds.
method Variational formulations, finite element approximations, piecewise linear elements, stability analysis.
result Derived schemes can compute rotationally symmetric self-shrinkers and geodesics.

Paper studies inverse curvature flows and solves related geometric problems.

problem Inverse curvature flows and related geometric problems.
method Analyzes a class of expanding flows with specific speeds and proves existence and convergence.
result Proves the existence and convergence of flows under certain conditions, leading to new solutions to geometric problems.

We propose a flow to study the Chern-Yamabe problem and discuss the long time existence of the flow. In the balanced case we show that the Chern-Yamabe problem is the Euler-Lagrange equation of some functional. The monotonicity of the functional along the flow is derived. We also show that the functional is not bounded…

2019-04-08abs ↗pdf ↗

Cascading flows improve variational inference in structured programs.

problem Challenges in variational inference for complex probabilistic programs.
method Integrates normalizing flows and ASVI to create cascading flows, which embed the forward-pass of probabilistic programs.
result Cascading flows outperform normalizing flows and ASVI in structured inference problems.

Improved flow-based inference speeds up and boosts accuracy for complex simulations.

problem Challenging inverse problems in astronomy, such as modeling strong gravitational lens systems.
method Refines flow-based generative models with simulator feedback for posterior inference.
result Improves accuracy by 53% and speeds up inference by up to 67x.

The paper studies geometric flows of spacelike curves in Lorentz-Minkowski plane and proves their long-term behavior.

problem Investigating geometric flows of spacelike curves in Lorentz-Minkowski plane.
method Examining the evolution of spacelike curves along prescribed geometric flows, including curve shortening and mean curvature flows.
result The geometric flows of spacelike curves in Lorentz-Minkowski plane exist for all time and converge to specific curves as time tends to infinity.

The Yamabe flow converges to a specific function on compactified manifolds.

problem Analyzing the Yamabe flow on asymptotically Euclidean manifolds with nonpositive Yamabe constant.
method Studied the Yamabe flow on asymptotically flat manifolds with Y0Y\leq 0 and showed convergence after rescalings.
result The Yamabe flow converges to the unique positive function solving the Yamabe problem on a compactification of the original manifold.

Two flow methods solve a problem on Riemannian manifolds, proving convergence to the Loewner-Nirenberg solution.

problem Solving the Loewner-Nirenberg problem on compact Riemannian manifolds with boundary.
method Direct flow and Yamabe flow approaches.
result Convergence of the flows to the solution of the Loewner-Nirenberg problem under various conditions.

Unified flow approach to curvature problem on specific manifolds.

problem Prescribed Chern scalar curvature problem on compact Hermitian manifolds with negative Gauduchon degree.
method Unified flow approach with conditions on curvature function ff.
result Flow converges to a conformal Hermitian metric with specified curvature.