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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.

168,657 papers · 148 categories

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48 results for flow lines

The paper studies flow lines on Higgs bundle moduli spaces, classifying them via secant varieties.

problem Classifying flow lines on moduli spaces of Higgs bundles.
method Gradient flow lines for L2L^2 norm of Higgs field, Morse-theoretic compactification, secant varieties.
result Flow lines have an algebro-geometric classification via secant varieties.

Study links Hopf differentials to curvature line flows on time-like CMC surfaces.

problem Understanding the relationship between Hopf differentials and curvature line flows on time-like CMC surfaces.
method Investigation of Hopf differentials and curvature line flows on time-like CMC surfaces in Lorentzian 3-space forms.
result The index of a curvature line flow at an umbilic point depends on the remainder of the Hopf differential's order modulo four.

Let (X,ω)(X,ω) be a compact Kähler manifold of complex dimension nn and (L,h)(L,h) be a holomorphic line bundle over XX. The line bundle mean curvature flow was introduced in \cite{JY} in order to find deformed Hermitian-Yang-Mills metrics on LL. In this paper, we consider the stability of the line bundle mean curvature f…

2020-01-21abs ↗pdf ↗

Study on straight-line flows for generative modeling with theoretical obstructions.

problem Existence and obstructions of straight-line flows in generative modeling.
method Characterizations of straight-line flows through PDEs involving conditional statistics of stochastic processes.
result Sharp dichotomy in the existence of straight-line flows for targets with well-separated modes.

Under mean radius of curvature flow, a closed convex surface in Euclidean space is known to expand exponentially to infinity. In the 3-dimensional case we prove that the oriented normals to the flowing surface converge to the oriented normals of a round sphere whose centre is determined by the initial surface. To prove…

2013-10-16abs ↗pdf ↗

The paper studies singularities in a complex flow related to mean curvature.

problem Investigating singularities in a complex flow related to mean curvature.
method Constructing two distinct examples of singularities using the line bundle mean curvature flow.
result Found a finite time singularity, ruling out long time existence of the flow.

Study of straight-line flows on a unique infinite surface.

problem Understanding straight-line flows on a specific infinite surface.
method Geometric description and characterization of periodic and drift orbits; use of rigid symmetries and Veech group.
result Complete characterization of periodic directions and proof of density of periodic and ergodic directions.

Straight lines are a basin of attraction for the elastic flow at least to level 1.9615π.

problem Understanding the basin of attraction for the free boundary free elastic flow.
method Steepest descent gradient flow for elastic energy, numerical evidence.
result Straight lines have a basin of attraction at least to level 1.9615π.

The paper studies the behavior of Möbius-invariant Willmore flow in 3-sphere, proving convergence to Clifford torus.

problem Investigating the behavior of Möbius-invariant Willmore flow in 3-sphere.
method Analyzing flow lines of the Möbius-invariant Willmore flow in 3-sphere, constructing divergent and convergent flow lines, and identifying limit surfaces.
result The flow lines of the Möbius-invariant Willmore flow in 3-sphere converge to parametrizations of the Clifford torus, up to Möbius transformations.

Holomorphic discs converge to maximal surfaces under specific flows.

problem Understanding the evolution of holomorphic discs under mean curvature flow.
method Mean curvature flow with boundary conditions in the space of oriented lines.
result Holomorphic discs converge to Bishop filling by holomorphic discs under certain conditions.

We study the geodesic flow on the normal line congruence of a minimal surface in R3{\Bbb{R}}^3 induced by the neutral Kähler metric on the space of oriented lines. The metric is lorentz with isolated degenerate points and the flow is shown to be completely integrable. In addition, we give a new holomorphic description …

2006-03-22abs ↗pdf ↗

The paper studies Ricci curvature on Kähler-Ricci flow.

problem Analyzing Ricci curvature on Kähler-Ricci flow.
method Examining n-dimensional compact Kähler manifolds with semi-ample canonical line bundles under Kähler Ricci Flow.
result Ricci curvature converges to negative of generalized Kähler Einstein metric ωBω_B locally away from singular set.

Floer constructs homology from flow lines in generalized dynamical systems and combinatorial vector fields.

problem Computing homology in discrete and smooth dynamical systems.
method Counting flow lines between orbits and critical points.
result Directly recovers Z2\mathbb{Z}_2 homology from flow lines.

Paper proves unique tangent flow at infinity for entropy-limited curve shortening.

problem Proving uniqueness of tangent flows for finite-entropy curve shortening.
method Rescaled backward convergence to a line, entropy analysis, and geometric properties.
result Ancient smooth curve shortening flow has a unique tangent flow at infinity.

The geodesic flow on the tangent bundle is the flow of a certain vector field which is called the spray S:TMTTMS:TM\to TTM. The flow lines of the vector field $\ka_{TM}øTS:TTM\to TTTM$ project to the Jacobi fields on TMTM. This could be called the Jacobi flow.

1996-11-01abs ↗pdf ↗

New Harnack inequality for curve shortening flow without convexity.

problem Proving a Harnack inequality for curve shortening flow without convexity.
method Developed a new Harnack inequality for one-dimensional mean curvature flow (curve shortening flow) that doesn't require convexity.
result Explicit time by which an initial curve becomes graphical under curve shortening flow.

This paper concerns with the asymptotic behavior of complete non-compact convex curves embedded in R2\mathbb{R}^2 under the αα-curve shortening flow for exponents α>12α>\frac12. We show that any such curve having in addition its two ends asymptotic to two parallel lines, converges under αα-curve shortening flow to the …

2018-07-29abs ↗pdf ↗

We prove a blow-up criterion in terms of an L2L_2-bound of the curvature for solutions to the curve diffusion flow if the maximal time of existence is finite. In our setting, we consider an evolving family of curves driven by curve diffusion flow, which has free boundary points supported on a line. The evolving curve h…

2018-10-16abs ↗pdf ↗

We study the line bundle mean curvature flow on Kähler surfaces under the hypercritical phase and a certain semipositivity condition. We naturally encounter such a condition when considering the blowup of Kähler surfaces. We show that the flow converges smoothly to a singular solution to the deformed Hermitian-Yang-Mil…

2019-12-31abs ↗pdf ↗

Study Ricci flow on spaces with conical singularities, proving existence and curvature estimates.

problem Analyzing Ricci flow on spaces with conical singularities.
method Existence proof for Ricci flow, curvature estimates, and tangent flow analysis.
result Existence of a solution to Ricci flow for a specific class of spaces.

Given a smooth closed manifold M, the Morse-Witten complex associated to a Morse function f and a Riemannian metric g on M consists of chain groups generated by the critical points of f and a boundary operator counting isolated flow lines of the negative gradient flow. Its homology reproduces singular homology of M. Th…

2004-11-21abs ↗pdf ↗

Notes on Morse Homology, focusing on gradient flow lines and semi-infinite dimensional cases.

problem Exploring Morse Homology and its applications in semi-infinite dimensional spaces.
method Presentation of concepts in finite dimensional Morse Homology, with an eye towards generalization to semi-infinite dimensions.
result Intuition for Floer homology through finite dimensional Morse Homology concepts.

The paper proves compactness for holomorphic curves with boundary on nearby Lagrangians.

problem Compactness of holomorphic curves with boundary on nearby Lagrangians.
method Generalizes earlier work on compactness, proving a limit configuration of holomorphic curves joined by gradient flow lines.
result Exponential estimate analyzing the interface between holomorphic parts and gradient flow lines.

Any closed, oriented, hyperbolic three-manifold with nontrivial second homology has many quasigeodesic flows, where quasigeodesic means that flow lines are uniformly efficient in measuring distance in relative homotopy classes. The flows are pseudo-Anosov flows which are almost transverse to finite depth foliations in …

1995-07-11abs ↗pdf ↗

We derive general Novikov-Morse type inequalities in a Conley type framework for flows carrying cocycles, therefore generalizing our results in [FJ2] derived for integral cocycle. The condition of carrying a cocycle expresses the nontriviality of integrals of that cocycle on flow lines. Gradient-like flows are distingu…

2003-11-30abs ↗pdf ↗

We show that the only convex ancient solutions to curve shortening flow are the stationary lines, shrinking circles, Grim Reapers and Angenent ovals, completing the classification initiated by Daskalopoulos, Hamilton and Sesum and X.-J. Wang

2019-03-05abs ↗pdf ↗

For the Kähler-Ricci flow on a compact Kähler manifold with semi-ample canonical line bundle, we prove the singularity type at infinity does not depend on the choice of the initial metric. We also provide new simple proofs for some existing classification results on infinite-time singularity type of the Kähler-Ricci fl…

2017-06-23abs ↗pdf ↗

Defines a volume functional for Hermitian connections on manifolds, proving its properties and connections.

problem Defining and analyzing volume functionals for Hermitian connections on manifolds.
method Introduces the line bundle mean curvature flow and relates it to deformed connections and special submanifolds.
result Proves the mirror equality for mSpin(7){ m Spin}(7)-dDT connections and deduces their properties.

Let XX be a compact Kähler manifold, EXE\to X a Hermitian vector bundle and LXL\to X an ample line bundle. We construct a non-linear heat flow corresponding to the almost Hermitian-Einstein equation introduced by N.C. Leung, and prove that the solution exists for a short time. We also construct a potential function $D…

2006-12-14abs ↗pdf ↗