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Periodically driven flows are fundamental models of chaotic behavior and the study of their transport properties is an active area of research. A well-known analytic construction is the augmentation of phase space with an additional time…

Dynamical Systems · Mathematics 2017-06-06 Gary Froyland , Péter Koltai

In this work, we investigate the analysis of generators for dynamic graphs, which are defined as graphs whose topology changes over time. We introduce a novel concept, called ''sustainability,'' to qualify the long-term evolution of dynamic…

Discrete Mathematics · Computer Science 2023-01-24 Yoann Pigné , Vincent Bridonneau , Frédéric Guinand

The purpose of this paper is to investigate coefficient matrices of functional equations of zeta functions associated with homogeneous cones, which are given explicitly in the previous paper, in detail. We prove that the coefficient matrix…

Representation Theory · Mathematics 2022-01-03 Hideto Nakashima

In this paper, we consider the dynamical zeta functions of Ruelle and Selberg associated with the geodesic flow of a compact hyperbolic odd dimensional manifold $X$. These functions are initially defined on one complex variable $s$ in some…

Spectral Theory · Mathematics 2015-09-29 Polyxeni Spilioti

We present a design for producing precisely adjustable and alternating single-axis magnetic fields based on nested Halbach dipole pairs consisting of permanent magnets only. Our design allows for three dimensional optical and mechanical…

Instrumentation and Detectors · Physics 2018-11-12 Oleg Tretiak , Peter Blümler , Lykourgos Bougas

We provide involutory symmetric generating sets of finitely generated Coxeter groups, fulfilling a suitable finiteness condition, which in particular is fulfilled in the finite, affine and compact hyperbolic cases.

Group Theory · Mathematics 2009-01-20 Ben Fairbairn , Jürgen Müller

We study the interplay between the dynamics of area-preserving surface homeomorphisms homotopic to the identity and the topology of the surface. We define fully essential dynamics and generalize the results previously obtained on strictly…

Dynamical Systems · Mathematics 2016-11-21 Andres Koropecki , Fabio Armando Tal

We study a class of $\Z^{d}$-substitutive subshifts, including a large family of constant-length substitutions, and homomorphisms between them, i.e., factors modulo isomorphisms of $\Z^{d}$. We prove that any measurable factor map and even…

Dynamical Systems · Mathematics 2023-02-27 Christopher Cabezas

We would like to construct a new Grothendieck topology for arithmetic schemes, whose cohomology groups associated with motivic complexes of sheaves are finitely generated and whose Euler characteristics are related to special values of…

Number Theory · Mathematics 2007-05-23 Stephen Lichtenbaum

In this paper, we introduce the notion of a dual topological graph of a given topological graph, and show that it defines a C*-algebra isomorphic to the C*-algebra of the given one. Repeating to take a dual, and taking a projective limit,…

Operator Algebras · Mathematics 2021-07-06 Takeshi Katsura

Although recent generative models can produce time series with close marginal distributions, they often face a fundamental tension between preserving global temporal structure and modeling stochastic local variations, particularly for…

Machine Learning · Computer Science 2026-03-23 Shaoshuai Du , Joze M. Rozanec , Andy Pimentel , Ana-Lucia Varbanescu

Given a compactly supported Hamiltonian diffeomorphism of the plane, one can define a generating function for it. In this paper, we show how generating functions retain information about the braid type of collections of fixed points of…

Symplectic Geometry · Mathematics 2025-10-01 Francesco Morabito

We investigate to what extent a minimal topological dynamical system is uniquely determined by a set of return times to some open set. We show that in many situations this is indeed the case as long as the closure of this open set has no…

Dynamical Systems · Mathematics 2021-07-26 Kamil Bulinski , Alexander Fish

We prove that every multiple zeta value is a $\mathbb{Z}$-linear combination of $\zeta(k_1,\dots, k_r)$ where $k_i\geq 2$. Our proof also yields an explicit algorithm for such an expansion. The key ingredient is to introduce modified…

Number Theory · Mathematics 2025-05-27 Minoru Hirose , Takumi Maesaka , Shin-ichiro Seki , Taiki Watanabe

The continuation of Misner space into the Euclidean region is seen to imply the topological restriction that the period of the closed spatial direction becomes time-dependent. This restriction results in a modified Lorentzian Misner space…

General Relativity and Quantum Cosmology · Physics 2009-10-30 Pedro F. Gonzalez-Diaz

In this paper we use generating function methods to obtain new asymptotic results about spaces of $F$-stable maximal tori in $GL_n(\overline{F_q})$, $Sp_{2n}(\overline{F_q})$, and $SO_{2n+1}(\overline{F_q})$. We recover stability results of…

Combinatorics · Mathematics 2017-03-21 Jason Fulman , Rita Jimenez Rolland , Jennifer C. H. Wilson

We introduce a new practical and more general definition of local symmetry-preserving operations on polyhedra. These can be applied to arbitrary plane graphs and result in plane graphs with the same symmetry. With some additional properties…

Combinatorics · Mathematics 2020-04-14 Pieter Goetschalckx , Kris Coolsaet , Nico Van Cleemput

In this note we prove that a fractional stochastic delay differential equation which satisfies natural regularity conditions generates a continuous random dynamical system on a subspace of a H\"older space which is separable.

Dynamical Systems · Mathematics 2014-01-24 Luu Hoang Duc , Björn Schmalfuss , Stefan Siegmund

A general procedure for constructing conserved electromagnetic current operators, for both finite and infinite degree of freedom systems, is given. A four-momentum operator consisting of matter, photon, and electromagnetic interactions is…

Nuclear Theory · Physics 2007-05-23 W. H. Klink

A finitely generated shift invariant space $V$ is a closed subspace of $L^2(\R^d)$ that is generated by the integer translates of a finite number of functions. A set of frame generators for $V$ is a set of functions whose integer translates…

Functional Analysis · Mathematics 2013-12-13 Carlos Cabrelli , Carolina A. Mosquera , Victoria Paternostro