Tootfinder

Amazon wegen Irreführung zu 7,8 Millionen US-Dollar Strafe verurteilt
Der Onlinehändler Amazon wurde in Polen zu 7,8 Millionen Dollar Strafe verurteilt. Der Bestellprozess habe Kunden und Kundinnen in die Irre geführt.

DroneUp unveils an autonomous drone "ecosystem" for last-mile deliveries, with Walmart, 7-Eleven, and Chick-fil-A the first retailers to pilot the system (Joann Muller/Axios)
https://www.axios.com/2024/03/26/walmart-7-11-chick-fil-a…

Scoop: Walmart, 7-11, Chick-fil-A pilot new drone delivery tech
DroneUp unveiled a proprietary autonomous drone delivery "ecosystem" for retailers.

Meet the ‘Bronze Age Zionists’ — Far-Right Jews Embracing Fascism in the Wake of October 7 | Religion Dispatches
https://religiondispatches.org/meet-the-bronze-age-zionists-far-right-jews-embracing-fascism-in-the-wa…

Meet the 'Bronze Age Zionists' — Far-Right Jews Embracing Fascism in the Wake of October 7
The US online hard-right isn’t exactly known as the friendliest place for Jews. It’s the place where antisemitic conspiracies thrive and cries of ‘Jews will not replace us’ resound. It’s where the Pittsburgh and Poway synagogue shooters (and many more besides) not only got their start and inspiratio

"Bom. Assim estš melhor. Uns dias de calma sem que me chegue nada de Algol-7, seguidos por uma listinha catita e organizada como deve ser e, para variar, sem nódoas esquisitas Š mistura. Tenho de mandar dizer ao etê que é mesmo isto, que continue assim, que venham mais coisas destas e a este ritmo porque é precisamente o que se quer. [...]"
#LampadaMagica

Dez Leituras em Algol-7 #6
Bom. Assim está melhor. Uns dias de calma sem que me chegue nada de Algol-7, seguidos por uma listinha catita e organizada como deve ser e, ...

NFL Draft 2024 Rounds 4-7 live updates: Best available, grades and full pick order https://theathletic.com/live-blogs/nfl-draft-2024-rounds-4-7-order-picks-trades-grades/TSEmTpKuGVE1/

NFL Draft 2024 Rounds 4-7 live updates: Best available, grades and full pick order
We've reached the final day of the 2024 NFL Draft. Follow along for updates.

Was ist der Sinn davon, die Komfortzone zu verlassen? Darum geht es in unserer heutigen Achtsamkeitskolumne:
https://weddingweiser.de/achtsamkeitskolumne-7/

Mich erreichte folgende Anfrage:
Den Radverkehr sichtbar machen: Freiwillige für ein Fotoshooting gesucht!

Wann? 1.3., 11.3. ODER 13.3., je 7:00-7:30 ODER 7:30-8:00
Wo? Laubestraße, Ecke Geisingstraße (Fahrradstraße in Striesen)
Wer? https://www.wegebund.de
Interesse? Mail …

7 Patriot Batteries Are Bare Minimum to Protect Lives in Ukraine – Zelenskyy: https://benborges.xyz/2024/04/28/patriot-batteries-are.html

How to watch NFL Draft 2024 Round 4-7: Start time, pick order and key notes to know https://theathletic.com/5450375/2024/04/27/nfl-draft-2024-how-to-watch-round-4-7/

How to watch NFL Draft 2024 Round 4-7: Start time, pick order and key notes to know
What's the draft order following a Day 2 with a glut of trade activity involving Day 3 picks?

I wanted to test #copilot's Icelandic capabilities, and it went completely bananas🍌
#ai #Iceland

How to watch NFL Draft 2024 Round 4-7: Start time, pick order and key notes to know https://theathletic.com/5450375/2024/04/27/nfl-draft-2024-how-to-watch-round-4-7/

How to watch NFL Draft 2024 Round 4-7: Start time, pick order and key notes to know
What's the draft order following a Day 2 with a glut of trade activity involving Day 3 picks?

[2024-02-28 Wed (UTC), 7 new articles found for math.DS Dynamical Systems]

[2024-02-28 Wed (UTC), 7 new articles found for physics.flu-dyn Fluid Dynamics]

Demonstration of Near-Epithermal Neutron Reflective Optics
Takuhiro Fujiie, Ryota Abe, Masahiro Hino, Mayu Hishida, Takuya Hosobata, Masaaki Kitaguchi, Rintaro Nakabe, Kenichi Oikawa, Takuya Okudaira, Joseph D. Parker, Kenji Sakai, Hirohiko M. Shimizu, Yusuke Tsuchikawa, Yutaka Yamagata
https://arxiv.org/abs/2403.18313

Demonstration of Near-Epithermal Neutron Reflective Optics
Specular reflection of neutrons on material surfaces has been demonstrated in the energy range of 0.09-0.7 eV. The results suggest that the applicable energy range of reflective neutron optics can be extended to the near-epithermal region by using existing techniques.

A federal judge in Texas on Tuesday ruled that a $1.7 trillion government funding bill was unconstitutionally passed in 2022 through a pandemic-era rule that allowed lawmakers in the House of Representatives to #vote by #proxy rather than in person.
U.S. District Judge James Wesley

Federal judge in Texas rules congressional passage of 2022 spending bill unconstitutional
A federal judge in Texas on Tuesday ruled that a $1.7 trillion government funding bill was unconstitutionally passed in 2022 through a pandemic-era rule that allowed lawmakers in the House of Representatives to vote by proxy rather than in person.

Was bitte geht hier vor?
TERMINAUFHEBUNG: Nationaler Luftreinhalteplan – Klage der #DUH – 7/24 - Berlin.de
https://www.berlin.de/gerichte/oberverwal…

12yo: "and then I rolled a 7. That's enough to kill a bunch of the clerics. The evil dragon..."
Me: "Wait, I have a question."
12yo: "So the evil dragon starts to.."
Me: "Hold on."
12yo: "What?"
Me: "When you're playing D&D and you roll a 7, do you ever turn to [one of the other players named] Seb and say, "Hey, I rolled a Seb-en!'?"
12yo: 🤨
12yo: 😒
12yo: "No.&q…

"On the Air: How a Rock ‘n’ Roll Radio Show Made Me a Better Librarian" by Charlie Bennett: #library

A research team has used the Effelsberg and Jodrell Bank radio telescopes to observe the precessing magnetar XTE J1810-197 — a highly magnetised and ultra-dense neutron star — shortly after its X-ray enhanced activity and radio reactivation. This precession damped on a timescale of a few months, which challenges some models used to explain the origin of the mysterious repeating fast radio bursts.

A wobbling magnetised star challenges the origin of repeating fast radio bursts

Are you a Linux Wayland user who has hit an issue where #VivaldiBrowser is just black on startup after the 6.7 update?
We now have added a potential fix in the latest Vivaldi snapshot. In addition, there are pre-release versions of an update to the stable stream for you to try.

Zij kunnen de catastrofe niet meer laten zien: dit zijn de 103 gedode journalisten in Gaza - #NRC
https://www.nrc.nl/nieuws/2024/03/27/103-g…

Wi-Fi 7 und 5G Advanced: Qualcomm setzt bei neuen Funkchips auf KI​
Die neuen Funkplattformen FastConnect 7900 und Snapdragon X80 sollen mehr Leistung und stabilere Verbindungen bieten – auch dank integrierter KI.​
http…

This https://arxiv.org/abs/2312.13963 has been replaced.
initial toot: https://mastoxiv.page/@…

Biased motility-induced phase separation: from chemotaxis to traffic jams
We propose a one-dimensional model of active particles interpolating between quorum sensing models used in the study of motility-induced phase separation (MIPS) and models of congestion of traffic flow on a single-lane highway. Particles have a target velocity with a density-dependent magnitude and a direction that flips with a finite rate that is biased toward moving right. Two key parameters are the bias and the speed relaxation time. MIPS is known to occur in such models at zero bias and zer…

This https://arxiv.org/abs/2401.17048 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Exploring Spatial Segregation Induced by Competition Avoidance as Driving Mechanism for Emergent Coexistence in Microbial Communities
This study investigates the role of spatial segregation, prompted by competition avoidance, as a key mechanism for emergent coexistence within microbial communities. Recognizing these communities as complex adaptive systems, we challenge the sufficiency of mean-field pairwise interaction models and consider the impact of spatial dynamics. We developed an individual-based spatial simulation depicting bacterial movement through a pattern of random walks influenced by competition avoidance, leadin…

Full NFL Draft 2024 Rounds 4-7 picks and analysis: Live updates as Jaylen Key is 'Mr. Irrelevant' https://theathletic.com/live-blogs/nfl-draft-2024-rounds-4-7-order-picks-trades-grades/TSEmTpKuGVE1/

NFL Draft 2024 Rounds 4-7 live updates: Best available, grades and full pick order
We've reached the final day of the 2024 NFL Draft. Follow along for updates.

Amazon zieht 7 Millionen gefälschte Produkte aus dem Verkehr
Mehrere Millionen gefälschte Produkte hat der Onlinehandelsriese Amazon 2023 von seiner Seite genommen. Mit KI versucht die Firma, Markenpiraterie einzudämmen.

How to watch NFL Draft 2024 Round 4-7: Start time, pick order and key notes to know https://theathletic.com/5450375/2024/04/27/nfl-draft-2024-how-to-watch-round-4-7/

How to watch NFL Draft 2024 Round 4-7: Start time, pick order and key notes to know
What's the draft order following a Day 2 with a glut of trade activity involving Day 3 picks?

Demonstration of Near-Epithermal Neutron Reflective Optics
Takuhiro Fujiie, Ryota Abe, Masahiro Hino, Mayu Hishida, Takuya Hosobata, Masaaki Kitaguchi, Rintaro Nakabe, Kenichi Oikawa, Takuya Okudaira, Joseph D. Parker, Kenji Sakai, Hirohiko M. Shimizu, Yusuke Tsuchikawa, Yutaka Yamagata
https://arxiv.org/abs/2403.18313

Demonstration of Near-Epithermal Neutron Reflective Optics
Specular reflection of neutrons on material surfaces has been demonstrated in the energy range of 0.09-0.7 eV. The results suggest that the applicable energy range of reflective neutron optics can be extended to the near-epithermal region by using existing techniques.

Including accessible routes: 7 hidden Google Maps features and how to use them
https://qz.com/google-maps-features-tips-tricks-1851434612

7 hidden Google Maps features and how to use them
Did you know you can go back in time using Google Maps?

"On the Air: How a Rock ‘n’ Roll Radio Show Made Me a Better Librarian" by Charlie Bennett: #library

A research team has used the Effelsberg and Jodrell Bank radio telescopes to observe the precessing magnetar XTE J1810-197 — a highly magnetised and ultra-dense neutron star — shortly after its X-ray enhanced activity and radio reactivation. This precession damped on a timescale of a few months, which challenges some models used to explain the origin of the mysterious repeating fast radio bursts.

A wobbling magnetised star challenges the origin of repeating fast radio bursts

Hamas leader hiding in Gaza, but killing him risks hostages, officials say

The Israeli military is confident that Hamas leader Yehiya #Sinwar, the alleged #architect of the Oct. 7 attacks, is hiding inside a labyrinthine network of tunnels beneath southern Gaza.
But he is surrounded by a human

Hamas leader hiding in Gaza, but killing him risks hostages, officials say
Israeli officials say they are closing in on Yehiya Sinwar, the accused architect of the Oct. 7 attacks. Whether his death would help end the war is up for debate.

Zij kunnen de catastrofe niet meer laten zien: dit zijn de 103 gedode journalisten in Gaza - #NRC
https://www.nrc.nl/nieuws/2024/03/27/103-g…

This https://arxiv.org/abs/2309.14582 has been replaced.
initial toot: https://mastoxiv.page/@…

Quantum Counterpart of Equipartition Theorem in Quadratic Systems
Equipartition theorem is a fundamental law of classical statistical physics, which states that every degree of freedom contributes $k_{B}T/2$ to the energy, where $T$ is the temperature and $k_{B}$ is the Boltzmann constant. Recent studies have revealed the existence of quantum version of the equipartition theorem. In the present work, we focus on how to obtain the quantum counterpart of generalized equipartition theorem for arbitrary quadratic systems where the multimode Brownian ocillators in…

This https://arxiv.org/abs/2402.09824 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

On the discrete-time origins of the replicator dynamics: From convergence to instability and chaos
We consider three distinct discrete-time models of learning and evolution in games: a biological model based on intra-species selective pressure, the dynamics induced by pairwise proportional imitation, and the exponential / multiplicative weights (EW) algorithm for online learning. Even though these models share the same continuous-time limit - the replicator dynamics - we show that second-order effects play a crucial role and may lead to drastically different behaviors in each model, even in …

This https://arxiv.org/abs/2310.12730 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Reconstruction of multiplex networks via graph embeddings
Multiplex networks are collections of networks with identical nodes but distinct layers of edges. They are genuine representations for a large variety of real systems whose elements interact in multiple fashions or flavors. However, multiplex networks are not always simple to observe in the real world; often, only partial information on the layer structure of the networks is available, whereas the remaining information is in the form of aggregated, single-layer networks. Recent works have propo…

This https://arxiv.org/abs/2309.00414 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Melting of olive oil in immiscible surroundings: experiments and theory
We report on the melting dynamics of frozen olive oil in quiescent water for Rayleigh numbers up to $10^9$. The density difference results in an upward buoyancy-driven flow of liquid oil forming a thin film around the frozen oil. We experimentally investigate flat, cylindrical, and spherical shapes and we derive theoretical expressions for the local film thickness, velocity, and the local melt rate for these three canonical geometries. Our theoretical models compare favourably with our experime…

Chargers select USC WR Brenden Rice, son of Hall of Famer Jerry Rice, in Round 7 of 2024 NFL Draft https://www.nfl.com/news/chargers-select-usc-wr-brenden-rice-son-of-hall-of-famer-jerry-rice-in-round-7-of-2024-nf…

Chargers select USC WR Brenden Rice, son of Hall of Famer Jerry Rice, in Round 7 of 2024 NFL Draft
Brenden Rice is staying home. The Los Angeles Chargers selected the USC product and son of Pro Football Hall of Famer Jerry Rice with the 225th-overall pick of the 2024 NFL Draft on Saturday.

heise Jobs IT Tag in Hamburg: Arbeitgeber und Jobsuchende treffen sich
Sind Sie IT-Fachkraft und suchen einen neuen Job? Der heise Jobs IT Tag ist die Jobmesse für ITler und findet am 7. März 2024 in Hamburg statt.

This https://arxiv.org/abs/2306.12467 has been replaced.
initial toot: https://mastoxiv.page/@…

Localised Dynamics in the Floquet Quantum East Model
We introduce and study the discrete-time version of the Quantum East model, an interacting quantum spin chain inspired by simple kinetically constrained models of classical glasses. Previous work has established that its continuous-time counterpart displays a disorder-free localisation transition signalled by the appearance of an exponentially large (in the volume) family of non-thermal, localised eigenstates. Here we combine analytical and numerical approaches to show that: i) The transition p…

This https://arxiv.org/abs/2309.02006 has been replaced.
link: https://scholar.google.com/scholar?q=a

Heteroclinic Dynamics in Network Dynamical Systems with Higher-Order Interactions
Heteroclinic structures organize global features of dynamical systems. We analyze whether heteroclinic structures can arise in network dynamics with higher-order interactions which describe the nonlinear interactions between three or more units. We find that while commonly analyzed model equations such as network dynamics on undirected hypergraphs may be useful to describe local dynamics such as cluster synchronization, they give rise to obstructions that allow to design heteroclinic structures…

This https://arxiv.org/abs/2306.01300 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Evolutionary dynamics with temporal higher-order interactions
Humans interact and cooperate in structured societies, which are often represented by complex networks. Previous explorations mainly focus on pairwise and static network structures, where each link connects two nodes permanently and never changes. However, empirical human collective interactions go beyond static time-invariant one-to-one relationships. Recently, researchers have made vital progress in modelling higher-order interactions using hypernetworks, where a link may connect more than tw…

LOOK: Cam Newton involved in wild brawl at 7-on-7 football tournament

https://www.cbssports.com/nfl/news/look-cam-newton-involved-in-wild-brawl-at-7-o…

LOOK: Cam Newton involved in wild brawl at 7-on-7 football tournament
Newton's role in the skirmish is currently unclear

AMD kündigt Ryzen 7 8700F und Ryzen 5 8400F an
Zwei weitere Prozessoren erweitern AMDs Ryzen-8000-Serie für Desktop-PCs. Sie scheinen aber zumindest vorher China-exklusiv zu sein.
https://www.

This https://arxiv.org/abs/2301.05917 has been replaced.
initial toot: https://mastoxiv.page/@…

Evidence of scale-free clusters of vegetation in tropical rainforests
Tropical rainforests exhibit a rich repertoire of spatial patterns emerging from the intricate relationship between the microscopic interaction between species. In particular, the distribution of vegetation clusters can shed much light on the underlying process regulating the ecosystem. Analyzing the distribution of vegetation clusters at different resolution scales, we show the first robust evidence of scale-invariant clusters of vegetation, suggesting the coexistence of multiple intertwined s…

This https://arxiv.org/abs/2308.07217 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Rigidity of J-rotational rational maps and critical quasicircle maps
We present a number of rigidity results concerning holomorphic dynamical systems admitting rotation quasicircles. Firstly, we show the absence of line fields on the Julia set of any rational map that is geometrically finite away from a number of rotation quasicircles with bounded type rotation number. As an application, we prove combinatorial rigidity associated to the problem of degeneration of Herman rings of the simplest configuration. Secondly, we extend a result of de Faria and de Melo on …

Multiplex measures for higher-order networks
Quintino Francesco Lotito, Alberto Montresor, Federico Battiston
https://arxiv.org/abs/2402.16782 https://

Multiplex measures for higher-order networks
A wide variety of complex systems are characterized by interactions of different types involving varying numbers of units. Multiplex hypergraphs serve as a tool to describe such structures, capturing distinct types of higher-order interactions among a collection of units. In this work, we introduce a comprehensive set of measures to describe structural connectivity patterns in multiplex hypergraphs, considering scales from node and hyperedge levels to the system's mesoscale. We validate our mea…

2024 NFL Draft: Packers take Michael Pratt in Round 7, stop Tulane quarterback's unexpected fall

https://www.cbssports.com/nfl/news/2024-nf

2024 NFL Draft: Packers take Michael Pratt in Round 7, stop Tulane quarterback's unexpected fall
Green Bay drafts CBS Sports' No. 8 quarterback in this class

NFL Draft 2024: Eagles tie NFL record for most trades in 7-round draft; here are all the moves made

https://www.cbssports.com/nfl/news/nfl-dra

NFL Draft 2024: Eagles tie NFL record for most trades in 7-round draft; here are all the moves made
The Eagles wheeled and dealed throughout the draft

This https://arxiv.org/abs/2112.10266 has been replaced.
link: https://scholar.google.com/scholar?q=a

Ferroelectricity and related effects on carrier transport in type-II Weyl semimetal WTe$_{2}$ thin film
We investigate ferroelectric polariation as well as the formation of long-range order and the carrier density distribution in type-II Weyl semimetal WTe$_{2}$ in $T_{d}$ phase. It is been found that the metallicity and ferroelectricity can coexist in bulk WTe$_{2}$ which has a significant impact on the electrical transport\cite{Sharma}, despite its large conductance. Also, our theoretical calculation and numerical simulation provide a deeper insight to the electrical structure-dependent dynam…

This https://arxiv.org/abs/2307.01485 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Monotone twist maps and Dowker-type theorems
Given a planar oval, consider the maximal area of inscribed $n$-gons resp. the minimal area of circumscribed $n$-gons. One obtains two sequences indexed by $n$, and one of Dowker's theorems states that the first sequence is concave and the second is convex. In total, there are four such classic results, concerning areas resp. perimeters of inscribed resp. circumscribed polygons, due to Dowker, Molnár, and Eggleston. We show that these four results are all incarnations of the convexity property…

Towards inferring reactor operations from high-level waste
Benjamin Jung, Antonio Figueroa, Malte G\"ottsche
https://arxiv.org/abs/2402.16443 https://…

Towards inferring reactor operations from high-level waste
Nuclear archaeology research provides scientific methods to reconstruct the operating histories of fissile material production facilities to account for past fissile material production. While it has typically focused on analyzing material in permanent reactor structures, spent fuel or high-level waste also hold information about the reactor operation. In this computational study, we explore a Bayesian inference framework for reconstructing the operational history from measurements of isotope r…

2024 NFL Draft grades: Chargers pick Brenden Rice, son of Hall of Fame wideout Jerry Rice, in Round 7

https://www.cbssports.com/nfl/news/2024-nf…

2024 NFL Draft grades: Chargers pick Brenden Rice, son of Hall of Fame wideout Jerry Rice, in Round 7
It's a bittersweet day for Rice

This https://arxiv.org/abs/2101.06392 has been replaced.
link: https://scholar.google.com/scholar?q=a

Supervised and unsupervised learning of directed percolation
Machine learning (ML) has been well applied to studying equilibrium phase transition models, by accurately predicating critical thresholds and some critical exponents. Difficulty will be raised, however, for integrating ML into non-equilibrium phase transitions. The extra dimension in a given non-equilibrium system, namely time, can greatly slow down the procedure towards the steady state. In this paper we find that by using some simple techniques of ML, non-steady state configurations of direc…

This https://arxiv.org/abs/2306.04716 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Frequency conditions for the global stability of nonlinear delay equations with several equilibria
In our adjacent work, we developed a spectral comparison principle for compound cocycles generated by delay equations. It allows to derive frequency conditions (inequalities) for the uniform exponential stability of such cocycles by means of their comparison with stationary problems. Such inequalities are hard to verify analytically, and in this work we develop approximation schemes to verify some of the arising frequency inequalities. Besides some general results, we mainly stick to the case o…

Effects of group size and noise on cooperation
Hong-Bin Zhang, Deng-Ping Tang
https://arxiv.org/abs/2402.16317 https://arxiv.org/pdf/…

Effects of group size and noise on cooperation
In a large population, the agents temporally form one by one group of the public goods game (PGG), and size of one group is randomly distributed at g.Based on this structure,we investigate the evolution of cooperation in public goods games as a function of the noise level underlying strategy adoptions with the group size distribution. We consider a particular case of time scales s between the interactions of the agents and the strategy update. We find the cooperative effects is affected by the …

Effective mass approach to memory in non-Markovian systems
M. Wi\'sniewski, J. {\L}uczka, J. Spiechowicz
https://arxiv.org/abs/2402.16673 https://

Effective mass approach to memory in non-Markovian systems
Recent pioneering experiments on non-Markovian dynamics done e.g. for active matter have demonstrated that our theoretical understanding of this challenging yet hot topic is rather incomplete and there is a wealth of phenomena still awaiting discovery. It is related to the fact that typically for simplification the Markovian approximation is employed and as a consequence the memory is neglected. Therefore methods allowing to study memory effects are extremely valuable. We demonstrate that a non…

This https://arxiv.org/abs/2306.02310 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Linear response for intermittent maps with critical point
We consider a two-parameter family of maps $T_{α, β}: [0,1] \to [0,1]$ with a neutral fixed point and a non-flat critical point. Building on a cone technique due to Baladi and Todd, we show that for a class of $L^q$ observables $ϕ: [0,1] \to \mathbb{R}$ the bivariate map $(α, β) \mapsto \int_0^1 ϕ\, dμ_{α,β}$, where $μ_{α, β}$ denotes the invariant SRB measure, is differentiable in a certain parameter region, and establish a formula for its directional derivative.

Communication as a driver of change
A. Fronzetti Colladon
https://arxiv.org/abs/2402.15863 https://arxiv.org/pdf/2402.15863

Communication as a driver of change
Chapter 2 explores the pivotal role of communication as a catalyst for change and its profound influence on human behavior. The focus is on understanding diverse forms of communication and human interaction that propel both individual and collective transformations. Emphasizing the potency of effective communication, the chapter unveils its capacity to unlock dormant mechanisms and unleash untapped potential within individuals. The goal is to illuminate the significant impact of communication i…

Singularities in d-dimensional Langevin equations with anisotropic multiplicative noise and lack of self-adjointness in the corresponding Schrodinger equation
Andrea Gabrielli
https://arxiv.org/abs/2402.16590

Singularities in d-dimensional Langevin equations with anisotropic multiplicative noise and lack of self-adjointness in the corresponding Schrodinger equation
In this paper we analyse d-dimensional Langevin equations in Ito representation characterised by anisotropic multiplicative noise, composed by the superposition of an isotropic tensorial component and a radial one, and a radial power law drift term. This class of model is relevant in many contexts ranging from vortex stochastic dynamics, passive scalar transport in fully developed turbulence and second order phase transitions from active to absorbing states. The focus of the paper is the system…

This https://arxiv.org/abs/2209.02381 has been replaced.
link: https://scholar.google.com/scholar?q=a

A criterion for the holomorphy of the curvature of smooth planar webs and applications to dual webs of homogeneous foliations on $\mathbb{P}^{2}_{\mathbb{C}}$
Let $d\geq3$ be an integer. For a holomorphic $d$-web $\mathcal{W}$ on a complex surface $M$, smooth along an irreducible component $D$ of its discriminant $Δ(\mathcal{W}),$ we establish an effective criterion for the holomorphy of the curvature of $\mathcal{W}$ along $D,$ generalizing results on decomposable webs due to Mar\'ın, Pereira and Pirio. As an application, we deduce a complete characterization for the holomorphy of the curvature of the Legendre transform (dual web) $\mathrm{Leg}\ma…

Two universal pathways in demographic transition
Kenji Itao
https://arxiv.org/abs/2402.15697 https://arxiv.org/pdf/2402.15697<…

Two universal pathways in demographic transition
Demographic transition, marked by declines in fertility and mortality, is a widespread phenomenon in modernization processes. By analyzing global data, it is illustrated that each country's change in crude birth rate $λ$ and life expectancy at birth $e_0$ follows one of two universal pathways conserving either $λe_0$ or $λ\exp(e_0 /18)$. This signifies two fundamentally different phases, governed by distinct mechanisms. Phase I (and II), prevalent until the mid-20th century (more recent in o…

Sparse Autoregressive Neural Networks for Classical Spin Systems
Indaco Biazzo, Dian Wu, Giuseppe Carleo
https://arxiv.org/abs/2402.16579 https://

Sparse Autoregressive Neural Networks for Classical Spin Systems
Efficient sampling and approximation of Boltzmann distributions involving large sets of binary variables, or spins, are pivotal in diverse scientific fields even beyond physics. Recent advancements in generative neural networks have significantly impacted this domain. However, those neural networks are often treated as black boxes, with architectures primarily influenced by data-driven problems in computational science. Addressing this gap, we introduce a novel autoregressive neural network arc…

This https://arxiv.org/abs/2206.05622 has been replaced.
link: https://scholar.google.com/scholar?q=a

Meromorphic Functions with a Polar Asymptotic Value
This paper is part of a general program in complex dynamics to understand parameter spaces of transcendental maps with finitely many singular values. The simplest families of such functions have two asymptotic values and no critical values. These families, up to affine conjugation, depend on two complex parameters. Understanding their parameter spaces is key to understanding families with more asymptotic values, just as understanding quadratic polynomials was for rational maps more generally.…

Periodically driven thermodynamic systems under vanishingly small viscous drives
Shakul Awasthi, Sreedhar B. Dutta
https://arxiv.org/abs/2402.16512 https:/…

Periodically driven thermodynamic systems under vanishingly small viscous drives
Periodically driven thermodynamic systems support stable non-equilibrium oscillating states with properties drastically different from equilibrium. They exhibit even more exotic features for low viscous drives, which is a regime that is hard to probe due to singular behavior of the underlying Langevin dynamics near vanishing viscosity. We propose a method, based on singular perturbation and Floquet theories, that allows us to obtain oscillating states in this limit. We then find two distinct cl…

This https://arxiv.org/abs/2205.09847 has been replaced.
link: https://scholar.google.com/scholar?q=a

Strict irreducibility of Markov chains and ergodicity of skew products
We consider a family of measure preserving transformations, which act on a common probability space and are chosen at random by a stationary ergodic Markov chain. This setting defines an instance of a random dynamical system (RDS), which may be described in terms of a step skew product. In many contexts it is desirable to know whether ergodicity of the family implies ergodicity of the skew product. Introducing the notion of strict irreducibility for Markov kernels we shall characterize the clas…

This https://arxiv.org/abs/2009.13607 has been replaced.
link: https://scholar.google.com/scholar?q=a

Modulus of continuity for spectral measures of suspension flows over Salem type substitutions
We study the spectrum of the self-similar suspension flows of sub-shifts arising from primitive substitutions. We focus on the case where the substitution matrix has a Salem number α as dominant eigenvalue. We obtain a Hölder exponent for the spectral measures for points away from zero and belonging to the field Q(α). This exponent depends only on three parameters of each of these points: its absolute value, the absolute value of its real conjugate and its denominator.

This https://arxiv.org/abs/2308.04951 has been replaced.
initial toot: https://mastoxiv.page/@…

Thermodynamic perspective on quantum fluctuations
What is the major difference between large and small systems? At small length-scales the dynamics is dominated by fluctuations, whereas at large scales fluctuations are irrelevant. Therefore, any thermodynamically consistent description of quantum systems necessitates a thorough understanding of the nature and consequences of fluctuations. In this chapter, we outline two closely related fields of research that are commonly considered separately -- fluctuation forces and fluctuation theorems. Fo…

On recurrence for $\mathbb{Z}^d$-nilsystems
Sebasti\'an Donoso, Felipe Hern\'andez, Alejandro Maass
https://arxiv.org/abs/2402.16838 https://

On recurrence for $\mathbb{Z}^d$-nilsystems
We study the topological recurrence phenomenon of actions of locally compact abelian groups on compact metric spaces. We address the popular Katznelson's question in this context and extend recurrence lifting results, known for $\mathbb{Z}$-actions, to this more general context. In the case $H=\mathbb{Z}^d$, we develop new techniques to analyze Bohr recurrence sets, and show that Bohr recurrence implies recurrence for a $\mathbb{Z}^d$-nilsystem $(G/Γ,\mathbb{Z}^d)$, under the assumption that t…

This https://arxiv.org/abs/2305.11954 has been replaced.
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Emergence of first-order and second-order phase transitions in a cyclic ecosystem exposed to environmental impact
A cyclically dominating three-species ecosystem, modeled within the framework of rock-paper-scissor game, is studied in presence of natural death and an effect of the environment. The environmental impact is parameterized along with the death rates in the rate equation of the species densities. Monte-Carlo simulations on this system reveal that the population density bears the signature of first-order and second-order phase transitions in different regimes of the parameters representing natural…

Ergodicity in planar slow-fast systems through slow relation functions
Renato Huzak, Hildeberto Jard\'on-Kojakhmetov, Christian Kuehn
https://arxiv.org/abs/2402.16511

Ergodicity in planar slow-fast systems through slow relation functions
In this paper, we study ergodic properties of the slow relation function (or entry-exit function) in planar slow-fast systems. It is well known that zeros of the slow divergence integral associated with canard limit periodic sets give candidates for limit cycles. We present a new approach to detect the zeros of the slow divergence integral by studying the structure of the set of all probability measures invariant under the corresponding slow relation function. Using the slow relation function, …

Bound-state confinement after trap-expansion dynamics in integrable systems
Leonardo Biagetti, Vincenzo Alba
https://arxiv.org/abs/2402.17623 https://

Bound-state confinement after trap-expansion dynamics in integrable systems
Integrable systems possess stable families of quasiparticles, which are composite objects (bound states) of elementary excitations. Motivated by recent quantum computer experiments, we investigate bound-state transport in the spin-$1/2$ anisotropic Heisenberg chain ($XXZ$ chain). Specifically, we consider the sudden vacuum expansion of a finite region $A$ prepared in a non-equilibrium state. In the hydrodynamic regime, if interactions are strong enough, bound states remain confined in the initi…

Strong coupling yields abrupt synchronization transitions in coupled oscillators
Jorge L. Ocampo-Espindola, Istv\'an Z. Kiss, Christian Bick, Kyle C. A. Wedgwood
https://arxiv.org/abs/2402.16471

Strong coupling yields abrupt synchronization transitions in coupled oscillators
Coupled oscillator networks often display transitions between qualitatively different phase-locked solutions -- such as synchrony and rotating wave solutions -- following perturbation or parameter variation. In the limit of weak coupling, these transitions can be understood in terms of commonly studied phase approximations. As the coupling strength increases, however, predicting the location and criticality of transition, whether continuous or discontinuous, from the phase dynamics may depend o…

Solitary cluster waves in periodic potentials: Formation, propagation, and soliton-mediated particle transport
Alexander P. Antonov, Artem Ryabov, Philipp Maass
https://arxiv.org/abs/2402.17469

Solitary cluster waves in periodic potentials: Formation, propagation, and soliton-mediated particle transport
Transport processes in crowded periodic structures are often mediated by cooperative movements of particles forming clusters. Recent theoretical and experimental studies of driven Brownian motion of hard spheres showed that cluster-mediated transport in one-dimensional periodic potentials can proceed in form of solitary waves. We here give a comprehensive description of these solitons. Fundamental for our analysis is a static presoliton state, which is formed by a periodic arrangements of basic…

Higher-dimensional multifractal analysis for the cusp winding process on hyperbolic surfaces
Yuya Arima
https://arxiv.org/abs/2402.16418 https://

Higher-dimensional multifractal analysis for the cusp winding process on hyperbolic surfaces
We perform a multifractal analysis of the growth rate of the number of cusp windings for the geodesic flow on hyperbolic surfaces with $m \geq 1$ cusps. Our main theorem establishes a conditional variational principle for the Hausdorff dimension spectrum of the multi-cusp winding process. Moreover, we show that the dimension spectrum defined on $\mathbb{R}_{>0}^m$ is real analytic. To prove the main theorem we use a countable Markov shift with a finitely primitive transition matrix and thermody…

On the microscopic foundation of thermodynamics and kinetics. Current status and prospects
A. Yu. Zakharov
https://arxiv.org/abs/2402.17234 https://…

On the microscopic foundation of thermodynamics and kinetics. Current status and prospects
A comparative analysis of two concepts aimed at microscopic substantiation of thermodynamics and kinetics has been performed. The first concept is based on the idea of microscopic reversibility of the dynamics of a system of particles, while macroscopic irreversibility is of statistical origin. The second concept is based on the idea of the initial microscopic irreversibility of dynamics, one of the mechanisms of which is the relativistic retardation of interactions between particles.

Complexity function of the most significant digits of $2^N^D$
Mehdi Golafshan, Ivan Mitrofanov
https://arxiv.org/abs/2402.16210 https://

Complexity function of the most significant digits of $2^N^D$
We investigate unipotent dynamics on a torus and apply it to the following problem. Let $d$ be a positive integer. Consider the sequence of digits $(\textsc{\textbf{w}}_n)$, where $\textsc{\textbf{w}}_n$ is the most digit in the decimal representation of $2^{n^d}$. We prove that the complexity function of the sequence $(\textsc{\textbf{w}}_n)$ is, up to finitely many values, a polynomial.

Thermodynamic Overfitting and Generalization: Energetic Limits on Predictive Complexity
Alexander B. Boyd, James P. Crutchfield, Mile Gu, Felix C. Binder
https://arxiv.org/abs/2402.16995

Thermodynamic Overfitting and Generalization: Energetic Limits on Predictive Complexity
Efficiently harvesting thermodynamic resources requires a precise understanding of their structure. This becomes explicit through the lens of information engines -- thermodynamic engines that use information as fuel. Maximizing the work harvested using available information is a form of physically-instantiated machine learning that drives information engines to develop complex predictive memory to store an environment's temporal correlations. We show that an information engine's complex predict…

Quasi-intermediate value theorem and outflanking arc theorem for plane maps
Jiehua Mai, Enhui Shi, Kesong Yan, Fanping Zeng
https://arxiv.org/abs/2402.16076

Quasi-intermediate value theorem and outflanking arc theorem for plane maps
For a disk $D$ in the plane $\mathbb R^2$ and a plane map $f$, we give several conditions on the restriction of $f$ to the boundary $\partial D$ of $D$ which imply the existence of a fixed point of $f$ in some specified domain in $D$. These conditions are similar to those appeared in the intermediate value theorem for maps on the real line. As an application of the main results, we establish a fixed point theorem for plane maps having an outflanking arc, which extends the famous theorem due to …

Exact Calculations of Coherent Information for Toric Codes under Decoherence: Identifying the Fundamental Error Threshold
Jong Yeon Lee
https://arxiv.org/abs/2402.16937

Exact Calculations of Coherent Information for Toric Codes under Decoherence: Identifying the Fundamental Error Threshold
The toric code is a canonical example of a topological error-correcting code. Two logical qubits stored within the toric code are robust against local decoherence, ensuring that these qubits can be faithfully retrieved as long as the error rate remains below a certain threshold. Recent studies have explored such a threshold behavior as an intrinsic information-theoretic transition, independent of the decoding protocol. These studies have shown that information-theoretic metrics, calculated usin…

Limits of Rauzy graphs of languages with subexponential complexity
Paul-Henry Leemann, Tatiana Nagnibeda, Alexandra Skripchenko, Georgii Veprev
https://arxiv.org/abs/2402.15877

Limits of Rauzy graphs of languages with subexponential complexity
To a subshift over a finite alphabet, one can naturally associate an infinite family of finite graphs, called its Rauzy graphs. We show that for a subshift of subexponential complexity the Rauzy graphs converge to the line $\mathbf{Z}$ in the sense of Benjamini-Schramm convergence if and only if its complexity function $p(n)$ is unbounded and satisfies $\lim_n\frac{p(n+1)}{p(n)} = 1$. We then apply this criterion to many examples of well-studied dynamical systems. If the subshift is moreover un…

[2024-02-28 Wed (UTC), 5 new articles found for cond-mat.stat-mech Statistical Mechanics]

A family of maps and a vector field on plane polygons
Maxim Arnold, Lael Costa, Serge Tabachnikov
https://arxiv.org/abs/2402.15848 https://

A family of maps and a vector field on plane polygons
We study, theoretically and experimentally, a 1-parameter family of transformations and their limiting vector field on the space of plane polygons. These transformations are discrete analogs of completely integrable transformation on closed plane curves, known as the bicycle correspondence, that is a geometric realization of the Bäcklund transformation of the planar filament equation. For odd-gons, we construct a symplectic form on the quotient space by parallel translations and show that the …

This https://arxiv.org/abs/2309.00502 has been replaced.
initial toot: https://mastoxiv.page/@…

How heat propagates in liquid $^3$He
In Landau's Fermi liquid picture, transport is governed by scattering between quasi-particles. The normal liquid $^3$He conforms to this picture but only at very low temperature. Here, we show that the deviation from the standard behavior is concomitant with the fermion-fermion scattering time falling below the Planckian time, $\frac{\hbar}{k_{\rm B}T}$ and the thermal diffusivity of this quantum liquid is bounded by a minimum set by fundamental physical constants and observed in classical liqu…

Intelligent Attractors for Singularly Perturbed Dynamical Systems
Daniel A. Serino, Allen Alvarez Loya, J. W. Burby, Ioannis G. Kevrekidis, Qi Tang
https://arxiv.org/abs/2402.15839

Intelligent Attractors for Singularly Perturbed Dynamical Systems
Singularly perturbed dynamical systems, commonly known as fast-slow systems, play a crucial role in various applications such as plasma physics. They are closely related to reduced order modeling, closures, and structure-preserving numerical algorithms for multiscale modeling. A powerful and well-known tool to address these systems is the Fenichel normal form, which significantly simplifies fast dynamics near slow manifolds through a transformation. However, the Fenichel normal form is difficul…

Deviations for generalized tiling billiards in cyclic polygons
Magali Jay
https://arxiv.org/abs/2402.15765 https://arxiv.org/pdf/2402…

Deviations for generalized tiling billiards in cyclic polygons
This work continues the study of tiling billiards, a class of dynamical system introduced by Davis et al. in 2018. We develop the study of generalized tiling billiards in a cyclic polygon. This work shows that the behavior of generalized tiling billiards in cyclic N-gons with N > 4 is considerably different from that of triangular and quadrilateral tiling billiards studied before. Indeed, we exhibit an open set of generalized tiling billiard trajectories deviating sublinearly from their asympto…

Multifractal Formalism from Large Deviations
Mirmukhsin Makhmudov, Evgeny Verbitskiy, Qian Xiao
https://arxiv.org/abs/2402.15642 https://

Multifractal Formalism from Large Deviations
It has often been observed that the Multifractal Formalism and the Large Deviation Principles are intimately related. In fact, Multifractal Formalism was heuristically derived using the Large Deviations ideas. In numerous examples in which the multifractal results have been rigorously established, the corresponding Large Deviation results are valid as well. Moreover, the proofs of multifractal and large deviations are remarkably similar. The natural question then is whether under which conditio…

This https://arxiv.org/abs/2311.10265 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

On the dimension of limit sets on $\mathbb{P}(\mathbb{R}^3)$ via stationary measures: the theory and applications
This paper investigates the (semi)group action of $\mathrm{SL}_3(\mathbb{R})$ on $\mathbb{P}(\mathbb{R}^3)$, a primary example of non-conformal, non-linear, and non-strictly contracting action. We study the Hausdorff dimension of a dynamically defined limit set in $\mathbb{P}(\mathbb{R}^3)$ and generalize the classical Patterson-Sullivan formula using the approach of stationary measures. The two main examples are Anosov representations in $\mathrm{SL}_3(\mathbb{R})$ and the Rauzy gasket. 1.…

This https://arxiv.org/abs/2309.00826 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Metrical properties of finite product of partial quotients in arithmetic progressions
We investigate the dynamics of continued fractions and explore the ergodic behaviour of the products of mixed partial quotients in continued fractions of real numbers. For any function $Φ:\mathbb N\to [2,+\infty)$ and any integer $d\geq 1$, we determine the Lebesgue measure and Hausdorff dimension of the set of real numbers for which the product of partial quotients in arithmetic progressions satisfy $a_n(x)a_{2n}(x)\cdots a_{dn}(x)\geq Φ(n)$ for infinitely many positive integers $n$. Our f…

This https://arxiv.org/abs/2210.10701 has been replaced.
link: https://scholar.google.com/scholar?q=a

Constructing equilibrium states for some partially hyperbolic attractors via densities
We shall describe a new construction of equilibrium states for a class of partially hyperbolic systems. This generalises our construction for Gibbs measures in the uniformly hyperbolic setting. This more general setting introduces new issues that we need to address carefully, in particular requiring additional assumptions on the transformation. We treat two cases: either the centre-stable manifold satisfies a bounded expansion condition; or the centre-unstable manifold satisfies a subexponentia…

This https://arxiv.org/abs/2208.01989 has been replaced.
link: https://scholar.google.com/scholar?q=a

Thermodynamic Formalism on the Skorokhod space: the continuous time Ruelle operator, entropy, pressure, entropy production and expansiveness
Consider the semi-flow given by the continuous time shift $Θ_t:\mathcal{D} \to \mathcal{D} $, $t \geq 0$, acting on the $\mathcal{D} $ of \textit{càdlàg} paths $w: [0,\infty) \to S^1$, where $S^1$ is the unitary circle. We equip the space $\mathcal{D} $ with the Skorokhod metric, and we show that the semi-flow is expanding. We also introduce a stochastic semi-group $e^{t\, L}$, $t \geq 0,$ where $L$ acts linearly on continuous functions $f:S^1\to\mathbb{R}$. This stochastic semigroup and a…

This https://arxiv.org/abs/2110.13686 has been replaced.
link: https://scholar.google.com/scholar?q=a

Dynamical Systems on Graph Limits and Their Symmetries
The collective dynamics of interacting dynamical units on a network crucially depends on the properties of the network structure. Rather than considering large but finite graphs to capture the network, one often resorts to graph limits and the dynamics thereon. We elucidate the symmetry properties of dynamical systems on graph limits -- including graphons and graphops -- and analyze how the symmetry shape the dynamics, for example through invariant subspaces. In addition to traditional symmetri…

On an abrasion motivated fractal model
Bal\'azs B\'ar\'any, G\'abor Domokos, \'Agoston Szesztay
https://arxiv.org/abs/2402.17765 https:…

On an abrasion motivated fractal model
In this paper, we consider a fractal model motivated by the abrasion of convex polyhedra, where the abrasion is realised by chipping small neighbourhoods of vertices. We study the upper box-counting dimension of the limiting object after infinitely many chipping.

Physics Informed Modeling of Ecosystem Respiration via Dynamic Mode Decomposition with Control Input
Maha Shadaydeh, Joachim Denzler, Mirco Migliavacca
https://arxiv.org/abs/2402.17625

Physics Informed Modeling of Ecosystem Respiration via Dynamic Mode Decomposition with Control Input
Ecosystem respiration (Reco) represents a major component of the global carbon cycle, and accurate characterization of its dynamics is essential for a comprehensive understanding of ecosystem-climate interactions and the impacts of climate extremes on the ecosystem. This paper presents a novel data-driven and physics-aware method for estimating Reco dynamics using the dynamic mode decomposition with control input (DMDc) technique, an emerging tool for analyzing nonlinear dynamical systems. The …

Mating Siegel and Thurston quadratic polynomials
Yuming Fu, Yanhua Zhang
https://arxiv.org/abs/2402.17475 https://arxiv.org/pdf/2402.…

Mating Siegel and Thurston quadratic polynomials
We prove that a quadratic polynomial with a bounded type Siegel disk and a quadratic post-critically finite polynomial are always mateable.

A Szemer\'edi type theorem for sets of positive density in cut-and-project sets
Michael Bj\"orklund, Alexander Fish
https://arxiv.org/abs/2402.17158

A Szemerédi type theorem for sets of positive density in cut-and-project sets
An extension of Szemerédi's Theorem is proved for sets of positive density in cut-and-project sets in general locally compact and second countable abelian groups. As a consequence, we establish a recent conjecture of Klick, Strungaru and Tcaciuc. Furthermore, we show a Szemeredi type theorem for sets of positive density in the set of fractional parts of $\mathbb{Q}_p$. Via a novel version of Furstenberg's Correspondence principle, which should be of independent interest, we show that our Szeme…

Data-driven discovery of interpretable Lagrangian of stochastically excited dynamical systems
Tapas Tripura, Satyam Panda, Budhaditya Hazra, Souvik Chakraborty
https://arxiv.org/abs/2402.17122

Data-driven discovery of interpretable Lagrangian of stochastically excited dynamical systems
Exploring the intersection of deterministic and stochastic dynamics, this paper delves into Lagrangian discovery for conservative and non-conservative systems under stochastic excitation. Traditional Lagrangian frameworks, adept at capturing deterministic behavior, are extended to incorporate stochastic excitation. The study critically evaluates recent computational methodologies for learning Lagrangians from observed data, highlighting the limitations in interpretability and the exclusion of s…

Higher Order Wiener-Wintner systesm: examples and applications
Idris Assani, Jacob Folks, Ryo Moore
https://arxiv.org/abs/2402.17094 https://

Higher Order Wiener-Wintner systesm: examples and applications
The notion of a Wiener-Wintner dynamical system provides a simple proof of pointwise convergence for double recurrence in the case where the Wiener-Wintner averages converge to zero at a polynomial rate for a dense set of functions that lie outside the Kronecker factor. This follows by exploiting a bound that arises in the beginning of Bourgain argument for double recurrence. We extend this bound to triple and higher recurrence and define the notion of a higher order Wiener-Wintner dynamical sy…

Invariant measures for reducible generalized Bratteli diagrams
Sergey Bezuglyi, Olena Karpel, Jan Kwiatkowski
https://arxiv.org/abs/2402.17046 https://

Invariant measures for reducible generalized Bratteli diagrams
In 2010, Bezuglyi, Kwiatkowski, Medynets and Solomyak [Ergodic Theory Dynam. Systems 30 (2010), no.4, 973-1007] found a complete description of the set of probability ergodic tail invariant measures on the path space of a standard (classical) stationary reducible Bratteli diagram. It was shown that every distinguished eigenvalue for the incidence matrix determines a probability ergodic invariant measure. In this paper, we show that this result does not hold for stationary reducible generalized …