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In this paper we prove that two-dimensional translating solitons in $\mathbb{R}^3$ with finite $L$-index are homeomorphic to a plane or a cylinder and that a two-dimensional self-expander with finite $L$-index and sub exponential weighted…

Differential Geometry · Mathematics 2022-05-02 Hilário Alencar , Gregório Silva Neto

We present theorems which provide the existence of invariant whiskered tori in finite-dimensional exact symplectic maps and flows. The method is based on the study of a functional equation expressing that there is an invariant torus. We…

Dynamical Systems · Mathematics 2009-03-03 Ernest Fontich , Rafael de la Llave , Yannick Sire

We extend Raimi's classical partition theorem to the continuous setting of the circle and $n$-dimensional torus. Building on recent work of Hegyv\'ari, Pach, and Pham in finite groups, we prove that there exist measurable partitions of the…

Combinatorics · Mathematics 2025-12-02 Hunseok Kang , Doowon Koh , Dung The Tran

We introduce a new combinatorial object called tower diagrams and prove fundamental properties of these objects. We also introduce an algorithm that allows us to slide words to tower diagrams. We show that the algorithm is well-defined only…

Combinatorics · Mathematics 2013-01-25 Olcay Coşkun , Müge Taşkın

Arnol'd and Kochergin mixing conservative flows on surfaces stand as the main and almost only natural class of mixing transformations for which higher order mixing has not been established, nor disproved. Under suitable arithmetic…

Dynamical Systems · Mathematics 2014-09-04 Bassam Fayad , Adam Kanigowski

We study the Bernoulli property for a class of partially hyperbolic systems arising from skew products. More precisely, we consider a hyperbolic map $(T,M,\mu)$, where $\mu$ is a Gibbs measure, an aperiodic H\"older continuous cocycle…

Dynamical Systems · Mathematics 2019-12-18 Changguang Dong , Adam Kanigowski

This paper is a continuation of our work on a conjecture of Almgren on area-minimizing surfaces with fractal singular sets. First, we prove that area-minimizing surfaces with fractal singular sets are prevalent on the homology level on…

Differential Geometry · Mathematics 2023-10-25 Zhenhua Liu

We investigate weak mixing for some classes of interval translation mappings. We give two distinct proofs that a typical Bruin-Troubetzkoy interval translation mapping is weakly mixing. Moreover, we show that the second approach extends to…

Dynamical Systems · Mathematics 2026-03-23 Mauro Artigiani , Artur Avila , Sébastien Ferenczi , Pascal Hubert , Alexandra Skripchenko

We prove that, in the flat torus and in any dimension, the volume-preserving mean curvature flow and the surface diffusion flow, starting $C^{1,1}-$close to a strictly stable critical set of the perimeter $E$, exist for all times and…

Differential Geometry · Mathematics 2025-05-23 Daniele De Gennaro , Antonia Diana , Andrea Kubin , Anna Kubin

We prove that a normal affine surface $V$ over $\bf C$ admits an effective action of a maximal torus ${\bf T}={\bf C}^{*n}$ ($n\le 2$) such that any other effective ${\bf C}^*$-action is conjugate to a subtorus of $\bf T$ in Aut $(V)$, in…

Algebraic Geometry · Mathematics 2007-05-23 Hubert Flenner , Mikhail Zaidenberg

We check that there exists a model structure on the category of flows whose weak equivalences are the S-homotopy equivalences. As an application, we prove that the generalized T-homotopy equivalences preserve the branching and merging…

Algebraic Topology · Mathematics 2020-06-18 Philippe Gaucher

This paper investigates the properties of trajectories in harmonic oscillator systems equipped with a point, absolutely continuous, or singular measure. As demonstrated in [30], infinite-dimensional linear flows of countable oscillator…

Dynamical Systems · Mathematics 2025-08-15 Vsevolod Sakbaev , Igor Volovich

We consider the compactification of Matrix theory on tori with background antisymmetric tensor field. Douglas and Hull have recently discussed how noncommutative geometry appears on the tori. In this paper, we demonstrate the concrete…

High Energy Physics - Theory · Physics 2009-10-31 Teruhiko Kawano , Kazumi Okuyama

It has been a long standing problem to find good symbolic codings for translations on the $d$-dimensional torus that enjoy the beautiful properties of Sturmian sequences like low factor complexity and good local discrepancy properties.…

Dynamical Systems · Mathematics 2021-11-01 Valérie Berthé , Wolfgang Steiner , Jörg M. Thuswaldner

Let $(M,\omega)$ be a translation surface such that every leaf of its horizontal foliation is either closed, or joins two zeros of $\omega$. Then, $M$ decomposes as a union of horizontal Euclidean cylinders. The $\textit{twist torus}$ of…

Dynamical Systems · Mathematics 2025-07-15 Jon Chaika , Osama Khalil

We characterize the global hypoellipticity, almost hypoellipticity and solvability for a class of systems of real vector fields on the (n + 1)-dimensional torus as well as the same properties about the sum of squares associated to the…

Analysis of PDEs · Mathematics 2024-05-07 Igor Ambo Ferra , Luís Antônio Carvalho dos Santos

Different notions on regularity of sets and of collection of sets play an important role in the analysis of the convergence of projection algorithms in nonconvex scenarios. While some projection algorithms can be applied to feasibility…

Optimization and Control · Mathematics 2023-10-24 Rubén Campoy

In this paper, we re-examine the Markov property in the context of neural machine translation. We design a Markov Autoregressive Transformer~(MAT) and undertake a comprehensive assessment of its performance across four WMT benchmarks. Our…

Computation and Language · Computer Science 2024-02-06 Cunxiao Du , Hao Zhou , Zhaopeng Tu , Jing Jiang

We proved that any Lorentz transformation of 2-torus is Anosov automorphism. One completely describes admissible parameters of Lorentz transformations and their arithmetical properties. One proved that an admissible speed light parameter…

Dynamical Systems · Mathematics 2007-05-23 S. Aranson , E. Zhuzhoma

We prove that the range of sequence of vector measures converging widely satisfies a weak lower semicontinuity property, that the convergence of the range implies the strict convergence (convergence of the total variation) and that the…

Classical Analysis and ODEs · Mathematics 2020-06-09 Justin Dekeyser , Jean Van Schaftingen