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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.

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48 results for height pairing

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.

We construct natural Green forms for special cycles in orthogonal and unitary Shimura varieties, in all codimensions, and, for compact Shimura varieties of type O(p,2) and U(p,1), we show that the resulting local archimedean height pairings are related to special values of derivatives of Siegel Eisentein series. A conj…

2018-08-28abs ↗pdf ↗

We consider the solid angle that a planar compact subset subtends at a point in a level set of height h and study two extremal problems for the solid angle. One of the variables is a point in such a plane, that is, we study the properties of the solid angle maximizer. The other is the pair of a planar compact subset an…

2011-03-09abs ↗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 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 ↗

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 ↗

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.

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 ↗

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 ↗

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.

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.

The paper characterizes a helicoid in a cylinder with minimal area and unique boundary conditions.

problem Characterize the helicoid in a cylinder with minimal area and specific boundary conditions.
method Characterizes the helicoid HCH_C in a solid cylinder CC from two perspectives: area minimality and boundary conditions.
result The helicoid HCH_C is the unique minimal surface with the specified boundary conditions.

DeepMIDE forecasts wind speeds across space, time, and height for offshore wind energy.

problem Forecasting wind speeds across multiple heights for large offshore wind turbines.
method Statistical deep learning model that jointly models wind speeds at different heights using a multi-output integro-difference equation.
result DeepMIDE forecasts outperform traditional methods in real-world offshore wind energy data.

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}.

Given a finite graph of relatively hyperbolic groups with its fundamental group relatively hyperbolic and edge groups quasi-isometrically embedded and relatively quasiconvex in vertex groups, we prove that vertex groups are relatively quasiconvex if and only if all the vertex groups have finite relative height in the f…

2015-08-21abs ↗pdf ↗

Study enhances neural network predictions for wave height using topological features.

problem Challenges in predicting wave heights due to short-term and long-term factors.
method Hybridization of persistent homology with neural networks for feature engineering.
result Significant improvements in R2R^2 score and reductions in errors for various neural network models.

In the following text we compute possible heights of A\mathbb A (Alexandroff square), O\mathbb O (unit square [0,1]×[0,1][0,1]\times[0,1] with lexicographic order topology) and U\mathbb U (unit square [0,1]×[0,1][0,1]\times[0,1] with induced topology of Euclidean plane). We prove Ph(A)={n:n5}{+}P_h(\mathbb{A})=\{n:n\geq5\}\cup\{+\infty\}, $P_h(\m…

2018-10-02abs ↗pdf ↗

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 ↗