Research
On-device research index

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

Trend · papers per month

119237356474 · Jun 202019922001200920172026
48 results for height estimates

Study uses satellite and lidar data to map forest height and biomass in France.

problem Mapping forest resources and carbon in large areas.
method Machine learning approach using Sentinel-1, Sentinel-2, ALOS-2, and GEDI Lidar data.
result High-resolution maps of forest height and biomass produced with good accuracy.

The paper derives height estimates for surfaces with constant curvature in warped product spaces.

problem Estimating heights of surfaces with constant curvature in warped product spaces.
method Use of conformal parameters and geometric applications to derive height estimates.
result Derives height estimates for surfaces with positive extrinsic or mean curvature in RimesfR2\mathbb{R} imes_{f} \mathbb{R}^{2}.

The paper aims at proving global height estimates for Killing graphs defined over a complete manifold with nonempty boundary. To this end, we first point out how the geometric analysis on a Killing graph is naturally related to a weighted manifold structure, where the weight is defined in terms of the length of the Kil…

2016-12-05abs ↗pdf ↗

We construct genomic predictors for heritable and extremely complex human quantitative traits (height, heel bone density, and educational attainment) using modern methods in high dimensional statistics (i.e., machine learning). Replication tests show that these predictors capture, respectively, \sim40, 20, and 9 perc…

2017-09-19abs ↗pdf ↗

We will discuss some sharp estimates for CMC graphs in a Riemannian 3-manifold MxR whose boundary is contained in a slice. We will start by giving sharp lower bounds for the geodesic curvature of the boundary and improve these bounds when assuming additional restrictions on the maximum height that such a surface reache…

2010-06-29abs ↗pdf ↗

The aim of this paper is to extend classic results of the theory of CMC surfaces in the product spaces to the class of immersed surfaces in M2(κ)×R\mathbb{M}^2(κ)\times\mathbb{R} whose mean curvature is given as a C1C^1 function depending on their angle function. We cover topics such as the existence of a priori curvature e…

2018-07-26abs ↗pdf ↗

New height estimate for area minimizing currents, leading to unique tangent cones and decay properties.

problem Analyzing singularities of area minimizing currents.
method Height estimate, decay estimates, techniques inspired by previous works.
result Locally area minimizing currents have a unique tangent cone at almost every point and decay rapidly to a unique tangent plane at branch points.

The liquid shape between two vertical parallel plates in a gravity field due to capillary forces is studied. When the physical system achieves its mechanical equilibrium, the capillary surface has mean curvature proportional to its height above a horizontal reference plane and it meets the vertical walls in a prescribe…

2006-07-20abs ↗pdf ↗

The abstract discusses connections between K-stability, heights, and rational points on Fano varieties.

problem Understanding the density of rational points on Fano varieties.
method Exploring connections between height bounds, K-stability, and Peyre's conjecture.
result Established an analog of height inequalities for real points, related to Kähler-Einstein metrics.

We obtain area growth estimates for constant mean curvature graphs in E(κ,τ)\mathbb{E}(κ,τ)-spaces with κ0κ\leq 0, by finding sharp upper bounds for the volume of geodesic balls in E(κ,τ)\mathbb{E}(κ,τ). We focus on complete graphs and graphs with zero boundary values. For instance, we prove that entire graphs in $\mathbb{E}(κ…

2015-04-20abs ↗pdf ↗

In the following text we prove that for all finite p0p\geq0 there exists a topological graph XX such that {p,p+1,p+2,}{+}\{p,p+1,p+2,\ldots\}\cup\{+\infty\} is the collection of all possible heights for transformation groups with phase space XX. Moreover for all topological graph XX with pp as height of transformation group $(H…

2017-10-30abs ↗pdf ↗

In this paper, we investigate three geometrical invariants of knots, the height, the trunk and the representativity. First, we give a conterexample for the conjecture which states that the height is additive under connected sum of knots. We also define the minimal height of a knot and give a potential example which has…

2017-09-21abs ↗pdf ↗

The stabilisation height of a fibre surface in the 3-sphere is the minimal number of Hopf plumbing operations needed to attain a stable fibre surface from the initial surface. We show that families of fibre surfaces related by iterated Stallings twists have unbounded stabilisation height.

2016-07-04abs ↗pdf ↗

We study the singularities of the members of the family of height functions on Whitney umbrellas, which is also known as cross-caps, and show that the family of the height functions is a versal unfolding. Moreover, we study local intersections of a Whitney umbrella with a hyperplane through its singular point.

2012-05-14abs ↗pdf ↗

Defines height pairing for differential forms on Riemann surface degenerations.

problem Calculating heights for differential forms on degenerating Riemann surfaces.
method Defines Archimedean height pairing, uses Dai-Yoshikawa asymptotics, extends Filip-Tosatti construction.
result Relates new pairing to current-valued pairing, extends geometric settings.

Study describes singularities of height functions on specific singular surfaces.

problem Analyzing singularities of height functions on singular surfaces.
method Using geometric language and blowing-ups, investigate singularities of height functions and dual surfaces.
result Characterized singularities of height functions and dual surfaces on specific singular surfaces.

The paper modifies a warped product space to find conditions for constant height functions.

problem Finding sufficient conditions for the height function to be constant in a modified warped product space.
method The paper modifies the warped product space by adding a warping function and discusses the sufficient condition for the height of immersed surfaces.
result The paper establishes a sufficient condition for the height function to be constant in the modified warped product space.

We describe spaces of essential finite height (measured) laminations in a surface SS using a parameter space we call S\mathbb S, an ordered semi-ring. We show that for every finite height essential lamination LL in SS, there is an action of π1(S)π_1(S) on an S\mathbb S-tree dual to the lift of LL to the universal co…

2014-04-11abs ↗pdf ↗

In this article, we consider compact surfaces ΣΣ having constant mean curvature HH (HH-surfaces) whose boundary Γ=ΣM0=M×f{0}Γ=\partialΣ\subset \mathbb{M}_0= \mathbb{M} \times_f\{0\} is transversal to the slice M0\mathbb{M}_0 of the warped product M×fR \mathbb{M}\times_f\mathbb{R} , here M \mathbb{M} denotes a Hadamard surface…

2018-03-21abs ↗pdf ↗

This paper exhibits equivalences of 2-stacks between certain models of S1\mathbb{S}^1-gerbes and differential 3-cocycles. We focus primarily on the model of Dixmier-Douady bundles, and provide an equivalence between the 2-stack of Dixmier-Douady bundles and the 2-stack of differential 3-cocycles of height 1, where the …

2017-05-02abs ↗pdf ↗

In this paper we consider the evolution of a graph-like hypersurface by anisotropic mean curvature flow, under some restrictions on the anisotropic area integrand. We find interior estimates (in both time and space) on the gradient of such hypersurfaces, depending only on the height of the graph and the anisotropic are…

2005-10-02abs ↗pdf ↗

We classify, in terms of topology of highest arcs, low height non-simple geodesics on the modular hyperbolic punctured sphere with three elliptic fixed points of order two. Of eight possible types, exactly one consists of geodesics that form a bigon about the cusp; we express all such geodesics in terms of Markoff trip…

2004-10-07abs ↗pdf ↗

We consider height functions on symmetric spaces MG/KM\cong G/K embedded in the associated matrix Lie group GG. In particular we study the relationship between the critical sets of the height function on GG and its restriction to MM. Also we prove that the gradient flow on MM can be integrated by means of a generaliz…

2013-07-23abs ↗pdf ↗

The height function of various surfaces decomposes into finite sums of scaled and translated versions of itself.

problem Decomposing the height function of different types of surfaces into simpler components.
method Using Euler-Ramanujan identities and Weierstrass-Enneper representation to decompose height functions of minimal, maximal, timelike minimal, and Born-Infeld surfaces.
result The height function of various surfaces can be expressed as a finite sum of scaled and translated versions of itself.

Proves a fundamental gap lower bound for horoconvex domains in hyperbolic space.

problem Proving a fundamental gap lower bound for horoconvex domains in hyperbolic space.
method Reduces the problem to a radial-height problem, compares Dirichlet forms with angular operators, and uses Green estimates.
result Establishes a polynomial \(D^{-3}\) scale fundamental gap lower bound.

Sharp bounds on K-semistable Fano varieties for low dimensions.

problem Establishing bounds on the height of K-semistable Fano varieties.
method Analyzing canonical integral models of toric Fano varieties, using the gap hypothesis and Donaldson's modular height.
result Sharp lower bounds on the height of toric Fano varieties, with applications to Mabuchi functional and Odaka's modular height.

Smooth solutions found for modified mean curvature flow in Riemannian manifolds.

problem Existence of smooth solutions for modified mean curvature flow.
method A priori estimates for modified mean curvature flow in Riemannian manifolds with Killing vector field.
result Existence of smooth, entire, longtime solutions for modified mean curvature flow with smooth initial data.