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We define Bernstein-Sato polynomials for meromorphic functions and study their basic properties. In particular, we prove a Kashiwara-Malgrange type theorem on their geometric monodromies, which would be useful also in relation with the…

Complex Variables · Mathematics 2023-05-08 Kiyoshi Takeuchi

We consider Bergman spaces and variations of them in one or several complex variables. For some domains we show that in these spaces the generic function is totally unbounded and hence non - extendable. We also show that the generic…

Complex Variables · Mathematics 2017-04-10 T. Hatziafratis , K. Kioulafa , V. Nestoridis

We consider different pentagon identities realized by the hyperbolic hypergeometric functions and investigate their degenerations to the level of complex hypergeometric functions. In particular, we show that one of the degenerations yields…

Classical Analysis and ODEs · Mathematics 2026-02-03 N. M. Belousov , G. A. Sarkissian , V. P. Spiridonov

Using Hecke triangle surfaces of finite and infinite area as examples, we present techniques for thermodynamic formalism approaches to Selberg zeta functions with unitary finite-dimensional representations $(V,\chi)$ for hyperbolic surfaces…

Spectral Theory · Mathematics 2016-06-09 Anke D. Pohl

This paper develops theory for a newly-defined bicomplex hyperbolic harmonic function with four real-dimensional inputs, in a way that generalizes the connection between real harmonic functions with two real-dimensional inputs and complex…

Complex Variables · Mathematics 2025-10-23 William Johnston , Sara Moore , Rebecca G. Wahl

In this paper we generalise a celebrated result of Milnor that characterises whether a rotationally symmetric surface is parabolic or hyperbolic to the case of biharmonic functions.

Differential Geometry · Mathematics 2025-02-11 John E. Bravo , Jean C. Cortissoz

Spectral decomposition with respect to the wave functions of Ruijsenaars hyperbolic system defines an integral transform, which generalizes classical Fourier integral. For a certain class of analytical symmetric functions we prove inversion…

Mathematical Physics · Physics 2025-05-28 N. Belousov , S. Khoroshkin

We investigate properties of some spherical fonctions defined on hyperbolic groups using boundary representations on the Gromov boundary endowed with the Patterson-Sullivan measure class. We prove sharp decay estimates for spherical…

Group Theory · Mathematics 2018-12-31 Adrien Boyer

We define the hyperbolic Yamabe flow and obtain some properties of its stationary solutions, namely, of hyperbolic Yamabe solitons. We consider immersed submanifolds as hyperbolic Yamabe solitons and prove that, under certain assumptions, a…

Differential Geometry · Mathematics 2025-08-04 Adara M. Blaga , Cihan Özgür

We study how the orbits of the singularities of the inverse of a meromorphic function prescribe the dynamics on its Julia set, at least up to a set of (Lebesgue) measure zero. We concentrate on a family of entire transcendental functions…

Dynamical Systems · Mathematics 2007-05-23 Jan-Martin Hemke

We prove that every transcendental meromorphic map f with a disconnected Julia set has a weakly repelling fixed point. This implies that the Julia set of Newton's method for finding zeroes of an entire map is connected. Moreover, extending…

Dynamical Systems · Mathematics 2014-12-01 Krzysztof Baranski , Nuria Fagella , Xavier Jarque , Boguslawa Karpinska

We present a new expansion of the zeta-function of Riemann. The current formalism -- which combines both the idea of interpolation with constraints and the concept of hypergeometric functions -- can, in a natural way, be generalised within…

Mathematical Physics · Physics 2007-05-23 Krzysztof Maslanka

In this paper we give a complete description of the horofunction boundary of the infinite dimensional real hyperbolic space, and characterise its Busemann points.

Metric Geometry · Mathematics 2018-07-06 Floris Claassens

We give conditions characterizing holomorphic and meromorphic functions in the unit disk of the complex plane in terms of certain weak forms of the maximum principle. Our work is directly inspired by recent results of John Wermer, and by…

Complex Variables · Mathematics 2011-07-22 J. T. Anderson , J. A. Cima , N. Levenberg , T. J. Ransford

A physically more adequate definition of a quaternionic holomorphic (H-holomorphic) function of one quaternionic variable compared to known ones and a quaternionic generalization of Cauchy-Riemann's equations are presented. At that a class…

Complex Variables · Mathematics 2024-02-14 Michael Parfenov

We improve existing lower bounds of the hyperbolic dimension for meromophic functions that have a logarithmic tract {\Omega} which is a H\"older domain. These bounds are given in terms of the fractal behavior, measured with integral means,…

Dynamical Systems · Mathematics 2017-09-08 Volker Mayer

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

We study several integrable Hamiltonian systems on the moduli spaces of meromorphic functions on Riemann surfaces (the Riemann sphere, a cylinder and a torus). The action-angle variables and the separated variables (in Sklyanin's sense) are…

Exactly Solvable and Integrable Systems · Physics 2015-06-26 Kanehisa Takasaki , Takashi Takebe

We establish Bowen's formula for the Julia set of a non-elementary, expanding, irreducible and aperiodic rational graph-directed Markov system satisfying the backward separating condition. Towards this end, we shall prove that the…

Dynamical Systems · Mathematics 2024-03-28 Tadashi Arimitsu , Johannes Jaerisch , Hiroki Sumi , Takayuki Watanabe

The McMullen-Sullivan holomorphic motion for topologically conjugate, complex polynomials with connected Julia set follows level sets of the Bottcher coordinate. The Buzzard-Verma holomorphic motion for hyperbolic, unstably connected,…

Dynamical Systems · Mathematics 2007-05-23 Philip P. Mummert