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This is an expository article on properties of actions on Lie groups by subgroups of their automorphism groups. After recalling various results on the structure of the automorphism groups, we discuss actions with dense orbits, invariant and…

Group Theory · Mathematics 2017-03-29 S. G. Dani

Asymptotic expansions as well as necessary and sufficient conditions are provided for the pointwise convergence of the spherical partial integrals of the associated Fourier transforms on the real hyperbolic space. The proposed method…

Mathematical Physics · Physics 2020-05-25 Agapitos N. Hatzinikitas

This paper gives a summary of a body of work at the intersection of control theory and smooth nonlinear dynamics. The main idea is to transfer the concept of uniform hyperbolicity, central to the theory of smooth dynamical systems, to…

Optimization and Control · Mathematics 2017-01-16 Christoph Kawan

We establish a connection between two previously unrelated topics: a particular discrete version of conformal geometry for triangulated surfaces, and the geometry of ideal polyhedra in hyperbolic three-space. Two triangulated surfaces are…

Geometric Topology · Mathematics 2015-09-02 Alexander Bobenko , Ulrich Pinkall , Boris Springborn

A discrete conformality for hyperbolic polyhedral surfaces is introduced in this paper. This discrete conformality is shown to be computable. It is proved that each hyperbolic polyhedral metric on a closed surface is discrete conformal to a…

Geometric Topology · Mathematics 2014-01-21 Xianfeng Gu , Ren Guo , Feng Luo , Jian Sun , Tianqi Wu

We introduce orthogonal ring patterns in the 2-sphere and in the hyperbolic plane, consisting of pairs of concentric circles, which generalize circle patterns. We show that their radii are described by a discrete integrable system. This is…

Metric Geometry · Mathematics 2024-10-14 Alexander I. Bobenko

This review paper is devoted to the theory of orbits. We start with the discussion of the Newtonian problem of motion then we consider the relativistic problem of motion, in particular the PN approximation and the further gravitomagnetic…

General Relativity and Quantum Cosmology · Physics 2017-09-06 Mariafelicia De Laurentis

A lot is known about the forward iterates of an analytic function which is bounded by 1 in modulus on the unit disk. The Denjoy-Wolff Theorem describes their convergence properties and several authors, from the 1880's to the 1980's, have…

Complex Variables · Mathematics 2007-05-23 Pietro Poggi-Corradini

We derive, and discuss the properties of, a symplectic map for the dynamics of bodies on nearly parabolic orbits. The orbits are perturbed by a planet on a circular, coplanar orbit interior to the pericenter of the parabolic orbit. The map…

Earth and Planetary Astrophysics · Physics 2023-09-06 Sam Hadden , Scott Tremaine

This is a short survey on finite-volume hyperbolic four-manifolds. We describe some general theorems and focus on the concrete examples that we found in the literature. The paper contains no new result.

Geometric Topology · Mathematics 2015-12-31 Bruno Martelli

In this paper we study the relationship between the strict locally minimizing orbits for time dependent lagrangian systems and hyperbolicity properties of the corresponding lagrangian flow.

Dynamical Systems · Mathematics 2024-10-14 Gonzalo Contreras , Daniel Offin

We determine explicitly the structure of the automorphism group of a parabolic Inoue surface. We also describe the quotients of the surface by typical cyclic subgroups of the automorphism group.

Algebraic Geometry · Mathematics 2009-04-01 A. Fujiki

We survey recent developments on rationality problems for algebraic varieties, with a particular emphasis on cycle-theoretic and combinatorial methods and their applications to hypersurfaces.

Algebraic Geometry · Mathematics 2026-04-02 Stefan Schreieder

Hyperbolic polynomials are real polynomials whose real hypersurfaces are nested ovaloids, the inner most of which is convex. These polynomials appear in many areas of mathematics, including optimization, combinatorics and differential…

Algebraic Geometry · Mathematics 2016-08-16 Mario Kummer , Daniel Plaumann , Cynthia Vinzant

We introduce the notion of order-preserving multi-homogeneous mapping which allows to study Perron-Frobenius type theorems and nonnegative tensors in unified fashion. We prove a weak and strong Perron-Frobenius theorem for these maps and…

Spectral Theory · Mathematics 2017-02-13 Antoine Gautier , Francesco Tudisco , Matthias Hein

In the article it was shown the convergence of special integral of two dimensional Terry's problem. Main tools of the article are an investigation of real algebraic varieties and estimations of areas of algebraic surfaces.

Classical Analysis and ODEs · Mathematics 2017-01-31 Ilgar Jabbarov

We find the automorphism group of the moduli space of parabolic bundles on a smooth curve (with fixed determinant and system of weights). This group is generated by: automorphisms of the marked curve, tensoring with a line bundle, taking…

Algebraic Geometry · Mathematics 2023-03-03 David Alfaya , Tomas L. Gomez

Periodic orbit theory for classical hyperbolic system is very significant matter of how we can interpret spectral statistics in terms of semiclassical theory. Although pruning is significant and generic property for almost all hyperbolic…

Chaotic Dynamics · Physics 2009-11-11 Takeshi Asamizuya

Several examples for the role of orbital angular momentum and spin-orbit correlations in hadron structure are discussed.

High Energy Physics - Phenomenology · Physics 2017-08-23 Matthias Burkardt

In the present investigation, we introduce and study the geometric properties of a class of analytic functions, associated with a parabolic region majorly lying in the left-half plane. Further we establish radius and majorization results…

Complex Variables · Mathematics 2023-02-03 Mridula Mundalia , S. Sivaprasad Kumar