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We propose a hyperbolic set-to-set distance measure for computing dissimilarity between sets in hyperbolic space. While point-to-point distances in hyperbolic space effectively capture hierarchical relationships between data points, many…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Pengxiang Li , Wei Wu , Zhi Gao , Xiaomeng Fan , Peilin Yu , Yuwei Wu , Zhipeng Lu , Yunde Jia , Mehrtash Harandi

Recent surveys seem to support bulk peculiar velocities well in excess of those anticipated by the standard cosmological model. In view of these results, we consider here some of the theoretical implications of large-scale drift motions. We…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Christos G Tsagas

We present a new method for detecting and correcting systematic errors in the distances to stars when both proper motions and line-of-sight velocities are available. The method, which is applicable for samples of 200 or more stars that have…

Astrophysics of Galaxies · Physics 2015-06-03 Ralph Schoenrich , James Binney , Martin Asplund

The stability of the system is an important part of the research on differential dynamical systems. This paper considers a pointwise hyperbolic system defined on a connected open subset N of a compact smooth Riemannian manifold M. The…

Dynamical Systems · Mathematics 2025-02-25 Haiye Guo , Yunhua Zhou

Globally hyperbolic spacetimes admitting infinitely many causal (and timelike) homotopy classes of curves joining two prescribed points, are exhibited and discussed.

Differential Geometry · Mathematics 2015-09-11 Pablo Morales Álvarez , Miguel Sánchez

Object detection, for the most part, has been formulated in the euclidean space, where euclidean or spherical geodesic distances measure the similarity of an image region to an object class prototype. In this work, we study whether a…

Computer Vision and Pattern Recognition · Computer Science 2022-03-21 Christopher Lang , Alexander Braun , Abhinav Valada

We consider one-dimensional hyperbolic PDEs, linear and nonlinear, with random initial data. Our focus is the {\em pointwise statistics,} i.e., the probability measure of the solution at any fixed point in space and time. For linear…

Analysis of PDEs · Mathematics 2025-12-17 Alina Chertock , Pierre Degond , Amir Sagiv , Li Wang

For a hyperbolic fibered 3-manifold M, we prove results that uniformly relate the structure of surface projections as one varies the fibrations of M. This extends our previous work from the fully-punctured to the general case.

Geometric Topology · Mathematics 2022-02-15 Yair N. Minsky , Samuel J. Taylor

We discuss basic properties of several different width functions in the $n$-dimensional hyperbolic space such as continuity, and we also define a new hyperbolic width as the extension of Leichtweiss' width function. Then we prove a…

Metric Geometry · Mathematics 2024-01-22 Károly J. Böröczky , András Csépai , Ádám Sagmeister

In this article we establish an Adam's Inequality in the Hyperbolic space. As an application we will also prove the asymptotic behaviour of the best constants in the Sobolev inequality and also discuss the solvability of Q curvature type…

Analysis of PDEs · Mathematics 2015-07-21 Debabrata Karmakar , Kunnath Sandeep

There has been tremendous progress in observing oscillations in solar-type stars. In a few short years we have moved from ambiguous detections to firm measurements. We briefly review the recent results, most of which have come from…

Astrophysics · Physics 2007-05-23 Timothy R. Bedding , Hans Kjeldsen

We develop the asymptotic behavior for the solutions to the stationary Navier-Stokes equation in the exterior domain of the 2D hyperbolic space. More precisely, given the finite Dirichlet norm of the velocity, we show the velocity decays to…

Analysis of PDEs · Mathematics 2017-05-25 Chi Hin Chan , Che-Kai Chen , Magdalena Czubak

We prove a stability version of the isodiametric inequality on the sphere and in the hyperbolic space.

Metric Geometry · Mathematics 2022-12-16 Károly J. Böröczky , Ádám Sagmeister

We analyse the fine convergence properties of one parameter families of hyperbolic metrics, on a fixed underlying surface, that move always in a horizontal direction, i.e. orthogonal to the action of diffeomorphisms.

Differential Geometry · Mathematics 2018-06-21 Melanie Rupflin , Peter M. Topping

It is known that hyperbolic spaces have strict negative type, a condition on the distances of any finite subset of points. We show that they have strong negative type, a condition on every probability distribution of points (with integrable…

Metric Geometry · Mathematics 2018-09-10 Russell Lyons

Our aim in this paper is to establish stable manifolds near hyperbolic equilibria of fractional differential equations in arbitrary finite dimensional spaces.

Dynamical Systems · Mathematics 2016-03-18 Nguyen Dinh Cong , Doan Thai Son , Stefan Siegmund , Hoang The Tuan

Runaway, massive stars are not among the most numerous. However, the bow shocks built by their supersonic movement in the interstellar medium have been detected in the infrared range in many cases. Most recently, the stellar bow shocks have…

Solar and Stellar Astrophysics · Physics 2013-07-10 Paula Benaglia , Ian R. Stevens , Cintia S. Peri

Hyperbolic partial differential equations on a one-dimensional spatial domain are studied. This class of systems includes models of beams and waves as well as the transport equation and networks of non-homogeneous transmission lines. The…

Analysis of PDEs · Mathematics 2014-09-24 Birgit Jacob , Kirsten Morris , Hans Zwart

We find the explicit local models of isolated singularities of conformal hyperbolic metrics by Complex Analysis, which is interesting in its own and could potentially be extended to high-dimensional case.

Complex Variables · Mathematics 2019-07-02 Yu Feng , Yiqian Shi , Bin Xu

In this paper we present an overview of results for discrete trigonometric and hyperbolic systems. These systems are discrete analogues of trigonometric and hyperbolic linear Hamiltonian systems. We show results which can be viewed as…

Classical Analysis and ODEs · Mathematics 2016-08-30 Petr Zemánek
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