Tootfinder

Etwas mehr der heute besonders häufig geteilten #News:
Tag des offenen Rechenzentrums am 7. November 2025
https://www.

🇺🇦 Auf radioeins läuft...
The Trammps:
🎵 Disco Inferno
#NowPlaying #TheTrammps
https://funkyganesh.bandcamp.com/album/the-trammps-disco-inferno-funky-ganesh-retouch-2024
https://open.spotify.com/track/5jUA1njy3h6ynHLvPdEVHt

Brock Purdy was the NFL’s darling as Mr. Irrelevant. Who will he be as a $265 million man? https://www.nytimes.com/athletic/6585778/2025/09/04/brock-purdy-contract-49ers-2025-season/

Last year I raised the idea of Open Source Quality Institute: https://www.tbray.org/ongoing/When/202x/2024/04/01/OSQI
Today, I’m wondering if anyone has tried to launch an Open-Source-Maintainer guild or union or whatever? It could set rates and draft contracts…

OSQI

Computing Radially-Symmetric Solutions of the Ultra-Relativistic Euler Equations with Entropy-Stable Discontinuous Galerkin Methods
Ferdinand Thein, Hendrik Ranocha
https://arxiv.org/abs/2508.21427

Computing Radially-Symmetric Solutions of the Ultra-Relativistic Euler Equations with Entropy-Stable Discontinuous Galerkin Methods
The ultra--relativistic Euler equations describe gases in the relativistic case when the thermal energy dominates. These equations for an ideal gas are given in terms of the pressure, the spatial part of the dimensionless four-velocity, and the particle density. Kunik et al.\ (2024, https://doi.org/10.1016/j.jcp.2024.113330) proposed genuine multi--dimensional benchmark problems for the ultra--relativistic Euler equations. In particular, they compared full two-dimensional discontinuous Galerkin…

Our trip down Müller's play started over a decade ago, with rehearsals finally starting a year before the pandemic. The script has so many facets, it's imperative to give a production a unique focus. It took us until 2024 to find ours: Amidst all the brutality and perversion, it's a love story.
https://chao…

Discovery of 63 New Young Asteroid Families
David Nesvorny, David Vokrouhlicky, Miroslav Broz, Fernando V. Roig
https://arxiv.org/abs/2508.00753 https://ar…

Discovery of 63 New Young Asteroid Families
We searched for young asteroid families -- those with ages t_age < 10 Myr and at least three members -- using the proper element catalog from Nesvorny et al. (2024). Our approach employed the Hierarchical Clustering Method (HCM) in a five-dimensional space of proper orbital elements: semimajor axis, eccentricity, inclination, proper nodal longitude, and proper perihelion longitude. The proper longitudes were calculated for various times in the past. Any convergence of these angles at times t < …

Spahn (7/2024): „Wenn ich Präsident Trump zuhöre, dann mag ich seinen Stil zwar nicht […], aber wenn ich auf die Inhalte schaue [...], dann sehe ich gemeinsame Interessen“
Deutschland: „In dem Abschiebeflug in den Irak saßen nicht nur männliche Straftäter, sondern auch Frauen und Kinder - mehr als bislang bekannt.“

Wow, een jaar lang geen verkeersdoden in Helsinki. Laat dat een voorbeeld zijn voor @… (15 doden in 2022, de laatste cijfers) @… (9 doden in 2024) en andere steden.

Phase transition properties via partition function zeros: The Blume-Capel ferromagnet revisited
Le\"ila Moueddene, Nikolaos G Fytas, Bertrand Berche
https://arxiv.org/abs/2508.20084

Phase transition properties via partition function zeros: The Blume-Capel ferromagnet revisited
Since the landmark work of Lee and Yang, locating the zeros of the partition function in the complex magnetic-field plane has become a powerful method for studying phase transitions. Fisher later extended this approach to complex temperatures, and subsequent generalizations introduced other control parameters, such as the crystal field. In previous works [Moueddene et al, J. Stat. Mech. (2024) 023206; Phys. Rev. E 110, 064144 (2024)] we applied this framework to the two- and three-dimensional B…

I am hoping to do 1,000 miles on the bike this year. It's still June and I'm at 650 (surpassing the 620 for all of 2024.) I also did 120 this month which is the most miles I've done in a single month. I am glad I started riding and try to do it daily.
#biking #bikeTooter

Strong Lens Discoveries in DESI Legacy Imaging Surveys DR10 with Two Deep Learning Architectures
Jose Carlos Inchausti, Christopher J. Storfer, Xiaosheng Huang, Yuan-Ming Hsu, Brandt Kaufmann, Chaitanya Pasupala, S. Banka, A. Dey, D. Lang, A. Meisner, J. Moustakas, A. D. Myers, E. F. Schlafly, D. J. Schlegel
https://arxiv.org/abs/2508.2008…

Strong Lens Discoveries in DESI Legacy Imaging Surveys DR10 with Two Deep Learning Architectures
We have conducted a search for strong gravitational lensing systems in the Dark Energy Spectroscopic Instrument (DESI) Legacy Imaging Surveys Data Release 10 (DR10). This paper is the fourth in a series of searches (following Huang et al. 2020; Huang et al. 2021; Storfer et al. 2024, Paper I, II, & III respectively). This is the first catalog of lens candidates covering nearly the entirety of the extragalactic sky south of declination $δ\approx +32$ deg, all of it observed by the DECam, coveri…

Interesting RTE analysis on the 🇫🇷 electricity spot market prices in the first half of 2025 (and first half of 2024). A clear 'canard'🦆
These are the average prices, which also include the winter months. But this new reality is barely reflected in retail prices.

Anzahl der errichteten #Balkonkraftwerke pro Jahr in #Deutschland mit Stand vom 25.07.2025.
Unplausible Inbetriebnahmedaten von 1900 bis 2015 wurden durch das Registrierungsdatum der #Steckersolaranlage

China überschreitet als erstes Land der Welt die Marke von 1.000 GW Solarleistung
https://www.iwr.de/news/china-ueberschreitet-als-erstes-land-der-welt-die-marke-von-1-000-gw-solarleistung-news39292

China überschreitet als erstes Land der Welt die Marke von 1.000 GW Solarleistung
Münster – China entwickelt sich immer schneller zum Motor für den globalen Ausbau der erneuerbaren Energien. Allein in den ersten sechs Monaten des Jahres 2025 wurden in China neue Solaranlagen mit einer Leistung von 210 GW (210.000 MW) neu errichtet. Das ist deutlich mehr als die gesamte installierte Solarleistung in den USA mit rund 178 GW (IRENA, 2024); Deutschland liegt Ende letzten Jahres bei 100 GW (MaStR, BNetzA).

Eine Minute der entspannenden Magie wasservermalbarer Aquarellstifte für euch. So wird mancher #buntfug #wandklex geboren.
(Archivvideo von Februar 2024 - bin ich gerade drüber gestolpert, hab ich glaub ich noch gar nicht online gezeigt.)
#birds #watercolor #watercolour #aquarell #art #artShop #fediart #mastoart #creativeToots

Mailbag: How important is a good start to season? https://www.dallascowboys.com/news/mailbag-how-important-is-a-good-start-to-season

Kreml-Experte offen: - „Hatte das Gefühl, schutzlos ausgeliefert zu sein“ #News #Nachrichten

A metrization theorem for edge-end spaces of infinite graphs
Max Pitz
https://arxiv.org/abs/2507.16625 https://arxiv.org/pdf/2507.166…

A metrization theorem for edge-end spaces of infinite graphs
We prove that the edge-end space of an infinite graph is metrizable if and only if it is first-countable. This strengthens a recent result by Aurichi, Magalhaes Jr.\ and Real (2024). Our central graph-theoretic tool is the use of tree-cut decompositions, introduced by Wollan (2015) as a variation of tree decompositions that is based on edge cuts instead of vertex separations. In particular, we give a new, elementary proof for Kurkofka's result (2022) that every infinite graph has a tree-cut d…

28 Years of Sun-as-a-star Extreme Ultraviolet Light Curves from SOHO EIT
Emily Sandford, Fr\'ed\'eric Auch\`ere, Annelies Mortier, Laura A. Hayes, Daniel M\"uller
https://arxiv.org/abs/2506.18990

28 Years of Sun-as-a-star Extreme Ultraviolet Light Curves from SOHO EIT
The Solar and Heliospheric Observatory (SOHO) Extreme-ultraviolet Imaging Telescope (EIT) has been taking images of the Solar disk and corona in four narrow EUV bandpasses (171Å, 195Å, 284Å, and 304Å) at a minimum cadence of once per day since early 1996. The time series of fully-calibrated EIT images now spans approximately 28 years, from early 1996 to early 2024, covering solar cycles 23, 24, and the beginning of cycle 25. We convert this extensive EIT image archive into a time series of …

Amazon expands its Now service in India to New Delhi, offering deliveries in as little as 10 minutes, after launching the service in Bengaluru in December 2024 (Sankalp Phartiyal/Bloomberg)
https://www.bloomberg.com/news/articles/20

Who Leads in the Shadows? ERGM and Centrality Analysis of Congressional Democrats on Bluesky
Gordon Hew, Ian McCulloh
https://arxiv.org/abs/2507.16858 https://

Who Leads in the Shadows? ERGM and Centrality Analysis of Congressional Democrats on Bluesky
Following the 2024 U.S. presidential election, Democratic lawmakers and their supporters increasingly migrated from mainstream social media plat-forms like X (formerly Twitter) to decentralized alternatives such as Bluesky. This study investigates how Congressional Democrats use Bluesky to form networks of influence and disseminate political messaging in a platform environment that lacks algorithmic amplification. We employ a mixed-methods approach that combines social network analysis, expo-ne…

Symmetry oscillations sensitivity to SU(2)-symmetry breaking in quantum mixtures
S. Musolino, M. Albert, P. Vignolo, A. Minguzzi
https://arxiv.org/abs/2506.22266

Symmetry oscillations sensitivity to SU(2)-symmetry breaking in quantum mixtures
In one-dimensional bosonic quantum mixtures with SU(2)-symmetry breaking Hamiltonian, the dynamical evolution explores different particle exchange symmetry sectors. For the case of infinitely strong intra-species repulsion, the hallmark of such symmetry oscillations are time modulations of the momentum distribution [Phys. Rev. Lett. 133, 183402 (2024)], an observable routinely accessed in experiments with ultracold atoms. In this work we show that this phenomenon is robust in strongly interacti…

UT-GraphCast Hindcast Dataset: A Global AI Forecast Archive from UT Austin for Weather and Climate Applications
Naveen Sudharsan, Manmeet Singh, Harsh Kamath, Hassan Dashtian, Clint Dawson, Zong-Liang Yang, Dev Niyogi
https://arxiv.org/abs/2506.17453

UT-GraphCast Hindcast Dataset: A Global AI Forecast Archive from UT Austin for Weather and Climate Applications
The UT GraphCast Hindcast Dataset from 1979 to 2024 is a comprehensive global weather forecast archive generated using the Google DeepMind GraphCast Operational model. Developed by researchers at The University of Texas at Austin under the WCRP umbrella, this dataset provides daily 15 day deterministic forecasts at 00UTC on an approximately 25 km global grid for a 45 year period. GraphCast is a physics informed graph neural network that was trained on ECMWF ERA5 reanalysis. It predicts more tha…

Making REST APIs Agent-Ready: From OpenAPI to Model Context Protocol Servers for Tool-Augmented LLMs
Meriem Mastouri, Emna Ksontini, Wael Kessentini
https://arxiv.org/abs/2507.16044

Making REST APIs Agent-Ready: From OpenAPI to Model Context Protocol Servers for Tool-Augmented LLMs
Large Language Models (LLMs) are evolving from passive text generators into active agents that invoke external tools. To support this shift, scalable protocols for tool integration are essential. The Model Context Protocol (MCP), introduced by Anthropic in 2024, offers a schema-driven standard for dynamic tool discovery and invocation. Yet, building MCP servers remains manual and repetitive, requiring developers to write glue code, handle authentication, and configure schemas by hand-replicatin…

A single point as a Calabi-Yau zerofold
Johanna Knapp, Joseph McGovern
https://arxiv.org/abs/2506.16726 https://arxiv.org/pdf/2506.16…

A single point as a Calabi-Yau zerofold
We give a brief account of a non-abelian GLSM that describes a Calabi-Yau zerofold, in this case a single point, in the "large volume" phase. The other phase is non-regular, i.e. there is no clear separation between the gauge and the matter sectors. Prepared for the proceedings of the MATRIX program "The geometry of moduli spaces in string theory" held in September 2024.

Arcsecond-Scale X-ray Imaging and Spectroscopy of SS 433 with Chandra HETG
Yusuke Sakai, Shinya Yamada, Haruka Sakemi, Mami Machida, Taichi Igarashi, Ryota Hayakawa, Miho Tan, Taisei Furuyama
https://arxiv.org/abs/2507.19042

Arcsecond-Scale X-ray Imaging and Spectroscopy of SS 433 with Chandra HETG
We present a spatial and spectral analysis of arcsecond-scale X-ray emission in SS433 using zeroth-order data from Chandra High-Energy Transmission Grating (HETG) observations. The analysis is based on 24 observations acquired between 1999 and 2024, comprising a total exposure of $\sim$850 ks and covering a wide range of orbital and precessional phases. Among these, the $\sim$140 ks observation from 2014 was analyzed in detail for this study. This data provides the best statistics and was taken…

Solving Zero-Sum Convex Markov Games
Fivos Kalogiannis, Emmanouil-Vasileios Vlatakis-Gkaragkounis, Ian Gemp, Georgios Piliouras
https://arxiv.org/abs/2506.16120

Solving Zero-Sum Convex Markov Games
We contribute the first provable guarantees of global convergence to Nash equilibria (NE) in two-player zero-sum convex Markov games (cMGs) by using independent policy gradient methods. Convex Markov games, recently defined by Gemp et al. (2024), extend Markov decision processes to multi-agent settings with preferences that are convex over occupancy measures, offering a broad framework for modeling generic strategic interactions. However, even the fundamental min-max case of cMGs presents signi…

Data of more than 740,000 stolen in ransomware attack on Michigan hospital network https://therecord.media/mclaren-health-care-data-breach-notification-ransomware

Jährlicher Zubau und Rückbau von #Balkonsolarleistung in Deutschland mit Stand vom 25.07.2025.
Unplausible Inbetriebnahmedaten von 1900 bis 2015 wurden durch das Registrierungsdatum der #Steckersolaranlage ersetzt.

Mailbag: How important is a good start to season? https://www.dallascowboys.com/news/mailbag-how-important-is-a-good-start-to-season

Lecture notes on link homologies and knotted surfaces
Kyle Hayden
https://arxiv.org/abs/2507.15305 https://arxiv.org/pdf/2507.15305

Lecture notes on link homologies and knotted surfaces
Link homology theories (such as knot Floer homology and Khovanov homology) have become indispensable tools for studying knots and links, including powerful 4-dimensional obstructions. These notes, based on lectures given at the 2024 Georgia Topology Summer School, discuss what these toolkits say about surfaces in 4-space themselves, via the homomorphisms assigned to link cobordisms. We begin with a brief overview of these theories (focusing on their shared formal properties) and survey some of …

Congested Clique Counting for Local Gibbs Distributions
Joshua Z. Sobel
https://arxiv.org/abs/2508.13083 https://arxiv.org/pdf/2508.13083

Congested Clique Counting for Local Gibbs Distributions
There are well established reductions between combinatorial sampling and counting problems (Jerrum, Valiant, Vazirani TCS 1986). Building off of a very recent parallel algorithm utilizing this connection (Liu, Yin, Zhang arxiv 2024), we demonstrate the first approximate counting algorithm in the CongestedClique for a wide range of problems. Most interestingly, we present an algorithm for approximating the number of $q$-colorings of a graph within $ε$-multiplicative error, when $q>αΔ$ for any…

Sherman charged with DUI following '24 arrest https://www.espn.com/nfl/story/_/id/45533363/richard-sherman-charged-dui-stemming-2024-arrest

BRIDGES Lectures: G2 in action, and a mathematical theory of exceptions
Laurent Manivel
https://arxiv.org/abs/2508.12757 https://arxiv.org/pdf/2508.12757…

BRIDGES Lectures: G2 in action, and a mathematical theory of exceptions
The BRIDGES meeting in gauge theory, extremal structures, and stability was held in June 2024 at l'Institut d'Études Scientifiques de Cargèse in Corsica, organized by Daniele Faenzi, Eveline Legendre, Eric Loubeau, and Henrique Sá Earp. The first week was a summer school consisting of four independent but related lecture series by Oscar García-Prada, Spiro Karigiannis, Laurent Manivel, and Ruxandra Moraru. The present document consists of notes for the lecture series by Laurent Manivel on t…

All-sky search for long-duration gravitational-wave transients in the first part of the fourth LIGO-Virgo-KAGRA Observing run
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration
https://arxiv.org/abs/2507.12282

All-sky search for long-duration gravitational-wave transients in the first part of the fourth LIGO-Virgo-KAGRA Observing run
We present an all-sky search for long-duration gravitational waves (GWs) from the first part of the LIGO-Virgo-KAGRA fourth observing run (O4), called O4a and comprising data taken between 24 May 2023 and 16 January 2024. The GW signals targeted by this search are the so-called "long-duration" (> 1 s) transients expected from a variety of astrophysical processes, including non-axisymmetric deformations in magnetars or eccentric binary coalescences. We make minimal assumptions on the emitted GW …

Implementation and Basis Construction for Smooth Finite Element Spaces
Chunyu Chen, Long Chen, Tingyi Gao, Xuehai Huang, Huayi Wei
https://arxiv.org/abs/2507.19732 https://

Implementation and Basis Construction for Smooth Finite Element Spaces
The construction of $C^m$ conforming finite elements on simplicial meshes has recently advanced through the groundbreaking work of Hu, Lin, and Wu (Found. Comput. Math. 24, 2024). Their framework characterizes smoothness via moments of normal derivatives over subsimplices, leading to explicit degrees of freedom and unisolvence, unifying earlier constructions. However, the absence of explicit basis functions has left these spaces largely inaccessible for practical computation. In parallel, multi…

Trigonometric Ratios Can Prove the Pythagorean Theorem
Shoya Kise, Takesa Uehara, Takashi Shinzato
https://arxiv.org/abs/2506.06304 https://

Trigonometric Ratios Can Prove the Pythagorean Theorem
Recent interest in noncircular trigonometric proofs has underscored the need for alternative methodologies. Jackson and Johnson's 2024 study addresses a longstanding gap in the foundations of trigonometric proofs. Inspired by the work of Jackson and Johnson [JJ24], we present three noncircular proofs of the Pythagorean theorem based on trigonometric identities. First, we establish the Pythagorean theorem via an isosceles triangle construction and the tangent double-angle formula. Second, we pre…

Who is using AI to code? Global diffusion and impact of generative AI
Simone Daniotti, Johannes Wachs, Xiangnan Feng, Frank Neffke
https://arxiv.org/abs/2506.08945

Who is using AI to code? Global diffusion and impact of generative AI
Generative coding tools promise big productivity gains, but uneven uptake could widen skill and income gaps. We train a neural classifier to spot AI-generated Python functions in 80 million GitHub commits (2018-2024) by 200,000 developers and track how fast--and where--these tools take hold. By December 2024, AI wrote an estimated 30.1% of Python functions from U.S. contributors, versus 24.3% in Germany, 23.2% in France, 21.6% in India, 15.4% in Russia and 11.7% in China. Newer GitHub users use…

Rotational-Mode-Enhanced Piezoelectricity in a Ferroelectric Double Helix
Yihao Hu, Shi Liu
https://arxiv.org/abs/2508.05017 https://arxiv.org/pdf/2508.050…

Rotational-Mode-Enhanced Piezoelectricity in a Ferroelectric Double Helix
Recent theoretical work has predicted the existence of a ``dipole spiral" structure in strained freestanding membranes, promising a route to giant electromechanical responses[\href{https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.133.046802}{PRL \textbf{133}, 046802 (2024)}]. However, its microscopic nature, energetic landscape, and electronic consequences remain largely unexplored. Here, using first-principles calculations on PbTiO$_3$ under biaxial tensile strain, we unveil a novel f…

#Satellitendaten zeigen einen Rückgang von 22 % bei 16 #Kaiserpinguin-Kolonien in Teilen der #Antarktis zwischen 2009 und 2024.
Hauptursache ist der Verlust stabiler

Emperor penguins show dramatic decline in one region of Antarctica, satellite photos show
WASHINGTON — The population of emperor penguins in one part of Antarctica appears to be declining faster than previously thought, according to a new analysis of satellite imagery released Tuesday

5-Month Forecast: What to watch from Cowboys in December and January https://www.dallascowboys.com/news/5-month-forecast-what-to-watch-from-cowboys-in-december-and-january

Fans' Choice: Vote for 910Preps Boys' Athlete of the Year for 2024-2025 https://www.fayobserver.com/story/sports/high-school/sports-awards/2025/06/10/fayetteville-nc-fans-c…