Tootfinder

https://lostplate.com/wp-content/uploads/2020/07/Riyang-Tea-classificationEN-1024x667.jpg

Mother Jones gets this right. https://www.motherjones.com/politics/2025/09/charlie-kirk-legacy-ezra-klein-2020-election-trump-turning-point/
«Kirk’s advocacy of vigorous debate ought not be separated from wh…

No, Charlie Kirk was not practicing politics the right way
His assassination deserves full condemnation; his full impact should not be sidestepped.

The Trump administration wants the last four digits of every voter’s Social Security number
—as part of its sweeping efforts to compile a federal voting database
The administration could use the database to investigate claims of noncitizen voting,
an obsession of Trump and other Republicans who claimed the 2020 election had been stolen through massive voter fraud.
In reality, the only ones concocting a scheme to fake votes in that election were in Donald Trump’s camp.

In Disturbing Move, Trump’s DOJ Demands Voting Data From States
It’s part of a sweeping project led by election deniers. Voting rights advocates are alarmed.

Neuroplasticity in adult human visual cortex (2020) https://www.sciencedirect.com/science/article/pii/S0149763419303288 by @EliCastaldi et al.; "early visual deprivation" [...] "leads to plastic reorganization of the visual cortices and permanent visua…

Establishing a Baseline of Software Supply Chain Security Task Adoption by Software Organizations
Laurie Williams, Sammy Migues
https://arxiv.org/abs/2509.08083 https://

Establishing a Baseline of Software Supply Chain Security Task Adoption by Software Organizations
Software supply chain attacks have increased exponentially since 2020. The primary attack vectors for supply chain attacks are through: (1) software components; (2) the build infrastructure; and (3) humans (a.k.a software practitioners). Software supply chain risk management frameworks provide a list of tasks that an organization can adopt to reduce software supply chain risk. Exhaustively adopting all the tasks of these frameworks is infeasible, necessitating the prioritized adoption of tasks.…

Aggregate-Combine-Readout GNNs Are More Expressive Than Logic C2
Stan P Hauke, Przemys{\l}aw Andrzej Wa{\l}\k{e}ga
https://arxiv.org/abs/2508.06091 https://

Aggregate-Combine-Readout GNNs Are More Expressive Than Logic C2
In recent years, there has been growing interest in understanding the expressive power of graph neural networks (GNNs) by relating them to logical languages. This research has been been initialised by an influential result of Barceló et al. (2020), who showed that the graded modal logic (or a guarded fragment of the logic C2), characterises the logical expressiveness of aggregate-combine GNNs. As a ``challenging open problem'' they left the question whether full C2 characterises the logical ex…

10 min vond ik wel lang genoeg
Nu 20 min and counting
🥴🥴

In 2020, Twitter had become utterly intolerable because of the Woke Left. Now it is utterly intolerable because of the Woke Right. It's a ruin.

sp_baboons: Baboons' interactions (2020)
Network of interactions between a group of 20 Guinea baboons living in an enclosure of a Primate Center in France, between June 13th 2019 and July 10th 2019. The data set contains observational and wearable sensors data.
This network has 23 nodes and 3197 edges.
Tags: Social, Animal, Offline, Unweighted, Weighted, Temporal, Metadata

Jährlicher Zubau und Rückbau der #Windenergieleistung in #Deutschland. Stand: 06.09.2025.
Summen der Inbetriebnahmen und Stilllegungen pro Jahr.
Der Datenbestand enthält ggf. unplausible Datensätze.
👉 Zusatzlesestoff: 14 Tipps zum

The limit of repetition thresholds of rich sequences
Lubom\'ira Dvo\v{r}\'akov\'a, Edita Pelantov\'a
https://arxiv.org/abs/2509.06104 https://

The limit of repetition thresholds of rich sequences
The repetition threshold of a class of sequences is the smallest number $r$ such that a sequence from the class contains no repetition with exponent $> r$. We focus on the class $\mathcal{C}_d$ of $d$-ary sequences rich in palindromes. In 2020, Currie, Mol, and Rampersad determined the repetition threshold for $\mathcal{C}_2$. In 2024, Currie, Mol and Peltomäki found the repetition threshold for $\mathcal{C}_3$ and conjectured that the repetition threshold for $\mathcal{C}_d$ tends to 2 with $…

Non self-similar metabelian groups
Dessislava Hristova Kochloukova, Melissa de Sousa Luiz
https://arxiv.org/abs/2509.05798 https://arxiv.org/pdf/2509.05798…

Non self-similar metabelian groups
We show some sufficient conditions for a finitely presented group $G = A \rtimes Q$, with $A$ and $Q$ abelian and the Krull dimension of $A$ equals to $2$ to be not self-similar. This is in contrast to the case of the Krull dimension of $A$ equals to $1$ considered by Kochloukova and Sidki in 2020.

Federal Courts Slow to Fix Vulnerable System After Repeated Hacking
https://www.nytimes.com/2025/09/03/us/politics/federal-courts-computer-hacks.html?mid=1#cid=3061919

Federal Courts Slow to Fix Vulnerable System After Repeated Hacking
After a 2020 breach thought to be Russia’s work, the courts told Congress that they would harden a system storing sealed documents. Five years later, the system was hacked again.

En ... Hoe lang duurt t voordat bij jullie de apotheek de telefoon opneemt?? 😇😇🙃

Because there are so many lunar eclipses that aren't full moons...
(think about it) https://infosec.exchange/@atax1a/115164183095682187

Free Elections in the Free State: Ensemble Analysis of Redistricting in New Hampshire
Atticus McWhorter, Daryl DeFord
https://arxiv.org/abs/2509.07328 https://

Free Elections in the Free State: Ensemble Analysis of Redistricting in New Hampshire
The process of legislative redistricting in New Hampshire, along with many other states across the country, was particularly contentious during the 2020 census cycle. In this paper we present an ensemble analysis of the enacted districts to provide mathematical context for claims made about these maps in litigation. Operationalizing the New Hampshire redistricting rules and algorithmically generating a large collection of districting plans allows us to construct a baseline for expected behavior…

#Drumpf political pressures see #WestPoint reneg on honoring #TomHanks as “outstanding citizen" as well as kill a planned parade for Sept. 25th.
Award now denied, is given to civilian who exemplifies the academy’s ideals…

Analysis: wholesale electricity now costs as much as 267% more for a single month than it did in 2020 in US areas located near significant data center activity (Bloomberg)
https://www.bloomberg.com/graphics/2025-ai-data-centers-electricity-prices/
…

A Computer-Assisted Proof of the Optimal Density Bound for Pinwheel Covering
Akitoshi Kawamura, Yusuke Kobayashi
https://arxiv.org/abs/2510.06533 https://a…

A Computer-Assisted Proof of the Optimal Density Bound for Pinwheel Covering
In the covering version of the pinwheel scheduling problem, a daily task must be assigned to agents under the constraint that agent $i$ can perform the task at most once in any $a_i$-day interval. In this paper, we determine the optimal constant $α^* = 1.264\ldots {}$ such that every instance with $\sum_{i} \frac{1}{a_i} \ge α^*$ is schedulable. This resolves an open problem posed by Soejima and Kawamura (2020). Our proof combines Kawamura's (2024) techniques for the packing version with new …

For those who forgot or never knew,
Mickey Flacks was among Santa Barbara’s most dogged advocates for affordable housing, among other struggles for social justice, environmental sanity, and other progressive causes.
The Independent launched the Mickey Flacks Journalism Fund back in 2020 to honor her memory and keep Mickey’s work alive.
The $100,000 we’ve raised since have empowered numerous editorial projects, and the Mickey Flacks Fellowship marks the epitome of those ef…

Why Donate to the Mickey Flacks Journalism Fund?
Support reporters like Christina McDermott, who’s starting her second year of the Mickey Flacks Fellowship.

Comment on "A Note on Over-Smoothing for Graph Neural Networks"
Razi Hasson, Reuven Guetta
https://arxiv.org/abs/2509.04178 https://arxiv.org/pdf…

Comment on "A Note on Over-Smoothing for Graph Neural Networks"
We comment on Cai and Wang (2020, arXiv:2006.13318), who analyze over-smoothing in GNNs via Dirichlet energy. We show that under mild spectral conditions (including with Leaky-ReLU), the Dirichlet energy of node embeddings decreases exponentially with depth; we further extend the result to spectral polynomial filters and provide a short proof for the Leaky-ReLU case. Experiments on edge deletion and weight amplification illustrate when Dirichlet energy increases, hinting at practical ways to re…

LiDO: Discovery of a 10:1 Resonator with a Novel Libration State
Rosemary E. Pike, Ruth Murray-Clay, Kathryn Volk, Mike Alexandersen, Mark Comte, Samantha M. Lawler, Ying-Tung Chen, Arcelia Hermosillo Ruiz, Cameron Semenchuck, Cameron Collyer, J. J. Kavelaars, Lowell Peltier
https://arxiv.org/abs/2508.05627…

LiDO: Discovery of a 10:1 Resonator with a Novel Libration State
The Large inclination Distant Objects LiDO survey has discovered the first securely classified object in the 10:1 mean motion resonance of Neptune. This object, 2020 VN40, is short-term stable in the 10:1 resonance, but not stable on Gyr timescales. 2020 VN40 is likely part of the scattering sticking population, and temporarily resides in the 10:1 resonance at ~139.5 au. This discovery confirms that this distant resonance is populated, as a single detection is likely to be indicative of a large…

Didn't realize this at the time but some time in 2020 my radio show surpassed the length of time it took for the confederacy to be established and die, now it's been more than double the amount lol

Bis zu 68 Prozent mehr - Seit 2020: Diese Lebensmittel wurden am teuersten! #News #Nachrichten

Life after lockdown: five years on, this is how Australia has changed since Covid first started
https://www.thenewdaily.com.au/opinion/2025/09/25/the-stats-guy-covid-5-years

Five years on, this is how Australia changed since Covid 
In March 2020 we wondered how Covid would change us. Five years on, the data shows the pandemic pressed fast-forward on a host of changes.

Analyzing the Performance of a 2.72kWp Rooftop Grid tied Photovoltaic System in Tarlac City, Philippines
Aldrin Joar Rodrigo Taduran, Leo P. Piao
https://arxiv.org/abs/2510.03487

Analyzing the Performance of a 2.72kWp Rooftop Grid tied Photovoltaic System in Tarlac City, Philippines
Residential and industrial areas are using rooftop grid-tied Photovoltaic (PV) systems, which are becoming increasingly popular. This is because solar energy reduces electrical consumption and provides free energy, while also lowering carbon emissions to create a more sustainable environment. This paper aims to analyze the 2.72kW p rooftop grid-tied PV system performance between 2020 and 2023 in Tarlac City, Philippines. The PV generated yearly is measured by Array Yield (YA), Reference Yield (…

Finally some information about this strange guy who ride like a train in front of the whole pack. Source: dotwatcher.cc
Nicolas Chatelet #tcrno11cap46: The Quiet Master of Suffering
Nicolas Chatelet isn’t new to long, brutal efforts. In 2020, the Parisian maths teacher rode 11 reps of Plateau de Beille, climbing 21,165 metres in 24 hours – the highest known vertical gain. He fue…

2020 dwf felt very clever importing a Hong Kong model S20 so he could get the Snapdragon variant instead of the Exynos. Little did he realize 2025 dwf would be trying to install aftermarket firmware and that not being able to read Chinese characters might pose a _slight_ issue

Deep Learning Reconstruction of Tropical Cyclogenesis in the Western North Pacific from Climate Reanalysis Dataset
Duc-Trong Le, Tran-Binh Dang, Anh-Duc Hoang Gia, Duc-Hai Nguyen, Minh-Hoa Tien, Xuan-Truong Ngo, Quang-Trung Luu, Quang-Lap Luu, Tai-Hung Nguyen, Thanh T. N. Nguyen, Chanh Kieu
https://arxiv.org/abs/2510.06118

Deep Learning Reconstruction of Tropical Cyclogenesis in the Western North Pacific from Climate Reanalysis Dataset
This study presents a deep learning (DL) architecture based on residual convolutional neural networks (ResNet) to reconstruct the climatology of tropical cyclogenesis (TCG) in the Western North Pacific (WNP) basin from climate reanalysis datasets. Using different TCG data labeling strategies and data enrichment windows for the NASA Modern-Era Retrospective analysis for Research and Applications Version 2 (MERRA2) dataset during the 1980-2020 period, we demonstrate that ResNet can reasonably rep…

3 Ways FaceBook Can Kill Your Creativity
#creativity #inspiration
https://muz4now…

3 Ways FaceBook Can Kill Your Creativity
Stan Stewart - @muz4now

Trump’s DOJ seeks election equipment in red state ahead of 2026 election
https://wapo.st/4mP2pfc

Trump’s DOJ seeks voting equipment in Missouri ahead of 2026 election
The unusual request for equipment used by two Republican clerks in the 2020 election comes after Trump said he would lead a movement to get rid of voting machines.

Never good for a bookstore to close. #Oklahoma #bookstore #amreading

Losing a place for community: Fulton Street Books & Coffee announces closure
Tulsa’s only Black-owned bookstore opened in 2020 amid protests against police brutality. Now, Oklahoma politics are causing it to close.

Die letzte Kommunalwahl in NRW war 2020, damals stand das Thema Klima ganz oben auf der Agenda. Jetzt geht es um Wirtschaft, Sicherheit, Migration. Klimaschutz ist kaum ein Thema mehr. Und das in einem der Bundesländer der Flutkatastrophe im Ahrtal 2021. Ob der Klimawandel weiß, dass er sich jetzt mal zurückhalten soll, weil er kein Trendthema mehr ist?
#KommunalwahlNRW

Overview of LifeCLEF Plant Identification task 2020
Herve Goeau, Pierre Bonnet, Alexis Joly
https://arxiv.org/abs/2509.19402 https://arxiv.org/pdf/2509.194…

Overview of LifeCLEF Plant Identification task 2020
Automated identification of plants has improved considerably thanks to the recent progress in deep learning and the availability of training data with more and more photos in the field. However, this profusion of data only concerns a few tens of thousands of species, mostly located in North America and Western Europe, much less in the richest regions in terms of biodiversity such as tropical countries. On the other hand, for several centuries, botanists have collected, catalogued and systematic…

Deep Active Learning for Lung Disease Severity Classification from Chest X-rays: Learning with Less Data in the Presence of Class Imbalance
Roy M. Gabriel, Mohammadreza Zandehshahvar, Marly van Assen, Nattakorn Kittisut, Kyle Peters, Carlo N. De Cecco, Ali Adibi
https://arxiv.org/abs/2508.21263

Deep Active Learning for Lung Disease Severity Classification from Chest X-rays: Learning with Less Data in the Presence of Class Imbalance
To reduce the amount of required labeled data for lung disease severity classification from chest X-rays (CXRs) under class imbalance, this study applied deep active learning with a Bayesian Neural Network (BNN) approximation and weighted loss function. This retrospective study collected 2,319 CXRs from 963 patients (mean age, 59.2 $\pm$ 16.6 years; 481 female) at Emory Healthcare affiliated hospitals between January and November 2020. All patients had clinically confirmed COVID-19. Each CXR wa…

The 'criminal alien' slander: A recent study of 150 years of US incarceration data found immigrant men were far less likely to be sent to prison than men born in the U.S. A 2020 study compared crime rates of undocumented immigrants vs. U.S.-born citizens: U.S.-born “are over 2x more likely to be arrested for violent crimes, 2.5x more likely to be arrested for drug crimes, and over 4x more likely to be arrested for property crimes.”
‘We Voted for Retribution’
https://www.aol.com/voted-retribution-200056494.html

Absence of eigenvalues of electromagnetic Dirac operators
Naiara Arrizabalaga, Lucrezia Cossetti, Matias Morales
https://arxiv.org/abs/2509.03627 https://a…

Absence of eigenvalues of electromagnetic Dirac operators
In this work, we develop the method of multipliers for electromagnetic Dirac operators and establish sufficient conditions on the magnetic and electric fields that guarantee the absence of point spectrum. Our results can be viewed as a generalization of those obtained by Cossetti, Fanelli and Krejčiřík (2020), which treated the purely magnetic case. We also emphasize that, in the massless case, our approach covers Coulomb-type potentials of the form $V(x) = \frac{1}{|x|} \big(ν\ma…

Quantum optical model of an artificial neuron
Vivek Mehta, Utpal Roy
https://arxiv.org/abs/2507.17349 https://arxiv.org/pdf/2507.17349

Quantum optical model of an artificial neuron
Magnini \emph{et al.} [\emph{Mach. Learn.: Sci. Technol. 1 (2020) 045008}] recently introduced a qubit-based model of an artificial neuron, along with its applications. The design of its quantum circuit is pivotal for effective implementation. In this context, we present two quantum circuit synthesis algorithms tailored for the realisation of the quantum neuron. Comprehensive circuit simulations are conducted, and the resulting performance is assessed using the circuit cost metric. Additionally…

Was sind die erstaunlichsten Ergebnisse der #Kommunalwahl2025 in NRW?
Der Zugewinn der Grünen in Düsseldorf und Münster?
Für mich ist es eindeutig: der Gewinn von OB #Herter in #Hamm un…

Permutation closure for multiple context-free languages
Andrew Duncan, Murray Elder, Lisa Frenkel, Mengfan Lyu
https://arxiv.org/abs/2509.22239 https://arx…

Permutation closure for multiple context-free languages
We prove that the \emph{permutation closure} of a multiple context-free language is multiple context-free, which extends work of Okhotin and Sorokin [LATA 2020] who showed closure under \emph{cyclic shift}, and complements work of Brandstädt [1981, RAIRO Inform. Théor.] (resp. Brough \emph{et al.} [2016, Discrete Math. Theor. Comput. Sci.]) who showed the same result for regular, context-sensitive, recursively enumerable (resp. EDT0L and ET0L) languages. In contrast to Okhotin and Sorokin who…

Bats Around our Home aka 16WW (2020) - Learn how I became active observing and recording the various local bats... - https://www.earth.org.uk/bats-at-16WW-1.html

Bats Around our Home aka 16WW (2020)
Learn how I became active observing and recording the various local bats...

Funding, authorship patterns and citation impact of articles funded by Ukrainian agencies before and during Russia's full-scale war (2020-2023)
Myroslava Hladchenko, Rodrigo Costas
https://arxiv.org/abs/2509.22013

Funding, authorship patterns and citation impact of articles funded by Ukrainian agencies before and during Russia's full-scale war (2020-2023)
This study examines how Russia's full-scale war against Ukraine affected foreign co-funding, authorship patterns, and the citation impact of articles funded by the Ministry of Education and Science of Ukraine (MESU), the National Academy of Sciences of Ukraine (NASU), and the National Research Foundation of Ukraine (NRFU). The analysis includes articles in Scopus-indexed journals between 2020 and 2023. The share of articles funded by these agencies increased from 8.6% in 2020-2021 to 11.9% in 2…

Contact binary asteroid (153201) 2000 WO107: rotation, shape model, and density
Yurij Krugly, Oleksiy Golubov, Ihor Kyrylenko, Veronika Lipatova, Irina Belskaya, Vasilij Shevchenko, Ivan Slyusarev, Raguli Inasaridze, Shuhrat Ehgamberdiev, Oleksandra Ivanova, Marek Husarik, Sergey Karpov, Daniel Hestroffer
https://arxiv.org/abs/2508.04535…

Contact binary asteroid (153201) 2000 WO107: rotation, shape model, and density
We combine different methods to investigate the rotation, determine the shape and estimate the density of near-Earth asteroid (153201) 2000 WO$_{107}$. We carried out photometric observations of the asteroid during the 2020 apparition. Then we created a program able to simulate the lightcurves, and used it within a Markov chain Monte Carlo (MCMC) algorithm to reconstruct the asteroid shape model from the observational data. The Goldstone radar observations of the asteroid were used as an additi…

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.

Cowboys season outlook: Dak Prescott is healthy, but is that enough for Dallas to rebound from forgetful 2024?

https://www.cbssports.com/nfl/news/cowboys…

A MATLAB toolbox for Computation of Speech Transmission Index (STI)
Pavel Rajmic, Ji\v{r}\'i Schimmel, \v{S}imon Cieslar
https://arxiv.org/abs/2510.03825 https://

A MATLAB toolbox for Computation of Speech Transmission Index (STI)
The speech transmission index (STI) is a popular simple metric for the prediction of speech intelligibility when speech is passed through a transmission channel. Computation of STI from acoustic measurements is described in the IEC 60268-16:2020 standard. Though, reliable implementations of STI are not publicly accessible and are frequently limited to the use with a proprietary measurement hardware. We present a Matlab STI implementation of both the direct and indirect approaches according to t…

A profile of Song-Chun Zhu, an AI scientist and NSF and Pentagon grantee, who left the US after 28 years to lead China's state-backed AI institute BIGAI in 2020 (Chang Che/The Guardian)
https://www.theguardian.com/news/n…

Atmospheric rivers and winter sea ice drive recent reversal in Antarctic ice mass loss
Marlen Kolbe, Jose Abraham Torres Alavez, Ruth Mottram, Marwan Katurji, Richard Bintanja, Eveline C. van der Linden
https://arxiv.org/abs/2510.03590

Atmospheric rivers and winter sea ice drive recent reversal in Antarctic ice mass loss
Since about 2000, the total mass of the Antarctic Ice Sheet (AIS) has declined at a near-linear rate, increasing global sea levels. Since 2016, however, satellite gravimetry data reveal a slowdown in net AIS mass loss and a net mass gain since 2020, despite increases in dynamically-driven ice loss by discharge from outlet glaciers. Here we use a suite of reanalyses and regional climate models to show that this reversal is caused by increased precipitation and positive surface mass balance anoma…

I'm a little shocked that I still have access to my university's MATLAB license

🇺🇦 #NowPlaying on #KEXP's #VarietyMix
Baby D:
🎵 Let Me Be Your Fantasy
#BabyD
https://bobsan.bandcamp.com/track/baby-d-let-me-be-your-fantasy-bobsan-2020-remix
https://open.spotify.com/track/1rQMmMklXi7k1HreHdD9Tj

Actively Learning Halfspaces without Synthetic Data
Hadley Black, Kasper Green Larsen, Arya Mazumdar, Barna Saha, Geelon So
https://arxiv.org/abs/2509.20848 https://

Actively Learning Halfspaces without Synthetic Data
In the classic point location problem, one is given an arbitrary dataset $X \subset \mathbb{R}^d$ of $n$ points with query access to an unknown halfspace $f : \mathbb{R}^d \to \{0,1\}$, and the goal is to learn the label of every point in $X$. This problem is extremely well-studied and a nearly-optimal $\widetilde{O}(d \log n)$ query algorithm is known due to Hopkins-Kane-Lovett-Mahajan (FOCS 2020). However, their algorithm is granted the power to query arbitrary points outside of $X$ (point sy…

Continued fractions with large prime partial quotients
Gerardo Gonz\'alez Robert, Mumtaz Hussain, Benjamin Ward, Lauren White
https://arxiv.org/abs/2507.17167

Continued fractions with large prime partial quotients
We determine the Lebesgue measure and Hausdorff dimension of various sets of real numbers with infinitely many partial quotients that are both large and prime, thus extending the well-known theorems by Łuczak (1997) and Huang-Wu-Xu (2020). To this end, we obtain new asymptotics on the tail end of the almost prime zeta function. Our results include some recent work by Schindler-Zweim{ü}ller (2023).

Reconstruction in the Calder\'on problem on a fixed partition from finite and partial boundary data
Henrik Garde
https://arxiv.org/abs/2507.19410 https://

Reconstruction in the Calderón problem on a fixed partition from finite and partial boundary data
This short note modifies a reconstruction method by the author (Comm. PDE, 45(9):1118--1133, 2020), for reconstructing piecewise constant conductivities in the Calderón problem (electrical impedance tomography). In the former paper, a layering assumption and the local Neumann-to-Dirichlet map was needed since the piecewise constant partitioning also was assumed unknown. Here I show how to modify the method in case the partitioning is known, for general piecewise constant conductivities and onl…

faculty_hiring_us: Faculty hiring networks in the US (2022)
Networks of faculty hiring for all PhD-granting US universities over the decade 2011–2020. Each node is a PhD-granting institution, and a directed edge (i,j) indicates that a person received their PhD from node i and was tenure-track faculty at node j during time of collection (2011-2020). This dataset is divided into separate networks for all 107 fields, as well as aggregate networks for 8 domains, and an overall network for …

Testing Planck 2020 and DESI data on wCDM Models
Kathleen Sammut
https://arxiv.org/abs/2507.11237 https://arxiv.org/pdf/2507.11237

Testing Planck 2020 and DESI data on wCDM Models
This work delves into the dynamical dark energy models of the wCDM parameterisation that are defined by their equation of state by comparing different, well-known parameterisation models, in an attempt to lessen the tensions of {H_0} and {σ_8} by using the latest observational data. This research also tested the newer Planck likelihood and BAO data by comparing them to their predecessors. The data that was used were: the Cosmic Microwave Background (CMB) data of Planck 2018 and Planck 2020 dat…

Beyond Patents: R&D, Capital, and the Productivity Puzzle in Early-Stage High-Tech Firms
Victor (Xucheng), CHEN
https://arxiv.org/abs/2507.18227 https://

Beyond Patents: R&D, Capital, and the Productivity Puzzle in Early-Stage High-Tech Firms
This study investigates the relationship between innovation activities and firm-level productivity among early-stage high-tech startups in China. Using a proprietary dataset encompassing patent records, R&D expenditures, capital valuation, and firm performance from 2020 to 2024, we examine whether and how innovation, measured by patents and R&D input, translates into economic output. Contrary to established literature, we find that patent output does not significantly contribute to either incom…

Betelgeuse, the Prototypical Red Supergiant
Andrea K. Dupree, Miguel Montarg\`es
https://arxiv.org/abs/2507.15966 https://arxiv.org/p…

Betelgeuse, the Prototypical Red Supergiant
The behavior of the bright red supergiant, Betelgeuse, is described with results principally from the past 6 years. The review includes imaging, photometry, and spectroscopy to record the Great Dimming of 2019--2020. This event was followed by a slow ongoing recovery from the massive surface mass ejection after which the stellar characteristics changed. Theoretical simulations address the cause of this episodic mass ejection and the optical Dimming. Recent publications evaluating the perplexing…

Operational Validation of Large-Language-Model Agent Social Simulation: Evidence from Voat v/technology
Aleksandar Toma\v{s}evi\'c, Darja Cvetkovi\'c, Sara Major, Slobodan Maleti\'c, Miroslav An{\dj}elkovi\'c, Ana Vrani\'c, Boris Stupovski, Du\v{s}an Vudragovi\'c, Aleksandar Bogojevi\'c, Marija Mitrovi\'c Dankulov
https://…

Operational Validation of Large-Language-Model Agent Social Simulation: Evidence from Voat v/technology
Large Language Models (LLMs) enable generative social simulations that can capture culturally informed, norm-guided interaction on online social platforms. We build a technology community simulation modeled on Voat, a Reddit-like alt-right news aggregator and discussion platform active from 2014 to 2020. Using the YSocial framework, we seed the simulation with a fixed catalog of technology links sampled from Voat's shared URLs (covering 30+ domains) and calibrate parameters to Voat's v/technolo…

Localised Arrowheads: The building blocks of elastic turbulence in rectilinear, sheared polymer flows
Theo A. Lewy, Rich R. Kerswell
https://arxiv.org/abs/2509.26168 https://

Localised Arrowheads: The building blocks of elastic turbulence in rectilinear, sheared polymer flows
Pressure-driven flow of a dilute polymer solution has been numerically observed to possess a form of elastic turbulence which is organised around the interactions of localised versions of 2-dimensional `arrowhead' travelling waves (Page et al. Phys. Rev. Lett. 125, 154501, 2020). As a step to confirming this theoretically, we identify spanwise-localised arrowhead travelling waves by tracking a symmetry-breaking bifurcation of the known spanwise-invariant (2D) arrowhead to a spanwise-periodic st…

Tractability Frontiers of the Shapley Value for Aggregate Conjunctive Queries
Christoph Standke, Benny Kimelfeld
https://arxiv.org/abs/2509.13565 https://a…

Tractability Frontiers of the Shapley Value for Aggregate Conjunctive Queries
In recent years, the Shapley value has emerged as a general game-theoretic measure for assessing the contribution of a tuple to the result of a database query. We study the complexity of calculating the Shapley value of a tuple for an aggregate conjunctive query, which applies an aggregation function to the result of a conjunctive query (CQ) based on a value function that assigns a number to each query answer. Prior work by Livshits, Bertossi, Kimelfeld, and Sebag (2020) established that this t…

On generalized disc-polygons in plane convex bodies with a higher degree of smoothness
Ferenc Fodor, D\'aniel I. Papv\'ari
https://arxiv.org/abs/2509.11702 https://

On generalized disc-polygons in plane convex bodies with a higher degree of smoothness
We prove power series expansions for the expectations of the number of vertices and missed area of random $L$-convex polygons in planar convex bodies with sufficiently smooth boundaries. Random $L$-convex polygons arise as the intersection of all translates of a fixed convex set $L$ that contain i.i.d. uniform random points from a suitable plane convex body $K$. Our results extend the asymptotic formulas proved in Fodor, Papvári and Vígh (2020) and Fodor and Montenegro (2024), and have conseq…

Stability and Superconductivity of Ternary Polyhydrides
Dmitrii V. Semenok, Di Zhou, Wuhao Chen, Alexander G. Kvashnin, Andrey V. Sadakov, Toni Helm, Pedro N. Ferreira, Christoph Heil, Vladimir M. Pudalov, Ivan A. Troyan, Viktor V. Struzhkin
https://arxiv.org/abs/2509.22877

Stability and Superconductivity of Ternary Polyhydrides
We review five years of experimental and theoretical attempts (2020-2025) to enhance the superconducting critical temperature ($\textit{T$_c$}$) of hydrogen-rich compounds by alloying binary superhydrides with additional elements. Despite predictions of higher $\textit{T$_c$}$ in ternary systems such as La-Y-H, La-Ce-H, and Ca-Mg-H, experiments consistently show that the maximum $\textit{T$_c$}$ in disordered ternary superhydrides does not exceed that of the best binary parent hydrides within e…

Beyond the Clouds: Advanced Data Analysis of a Dutch Sky Quality Meter Network
Farhan R. Shah (Kapteyn Astronomical Institute, University of Groningen, Groningen, The Netherlands), Reynier F. Peletier (Kapteyn Astronomical Institute, University of Groningen, Groningen, The Netherlands), Jake Noel-Storr (Access Astronomy), Dirk van der Geest (Kapteyn Astronomical Institute, University of Groningen, Groningen, The Netherlands), Theo Jurriens (Science LinX, Faculty of Science and Engineer…

Beyond the Clouds: Advanced Data Analysis of a Dutch Sky Quality Meter Network
Light pollution is an increasing environmental concern, impacting both ecological systems and human health. This report presents an analysis of light pollution data from the \textit{Was het donker} SQM network from 2020 until 2023, with a focus on indirect light pollution, commonly known as skyglow. By integrating measurements from Sky Quality Meter (SQM) stations in the network and cloud cover data from EUMETSAT, we conducted a comprehensive analysis of night sky brightness across a region enc…

Quotegraph: A Social Network Extracted from Millions of News Quotations
Marko \v{C}uljak, Robert West, Andreas Spitz, Akhil Arora
https://arxiv.org/abs/2507.17626 https://

Quotegraph: A Social Network Extracted from Millions of News Quotations
We introduce Quotegraph, a novel large-scale social network derived from speaker-attributed quotations in English news articles published between 2008 and 2020. Quotegraph consists of 528 thousand unique nodes and 8.63 million directed edges, pointing from speakers to persons they mention. The nodes are linked to their corresponding items in Wikidata, thereby endowing the dataset with detailed biographic entity information, including nationality, gender, and political affiliation. Being derived…

Women in STEM: Interview with Halina Abramowicz
Elisabetta Gallo, Henriette Ullmann
https://arxiv.org/abs/2507.08857 https://arxiv.or…

Women in STEM: Interview with Halina Abramowicz
This short article is a first of a series describing the scientific journey of exceptional women scientists in experimental particle physics. We interviewed Halina Abramowicz, who started her career in hadron-hadron interactions, in neutrino physics, became an expert of strong interactions, guided the European Particle Physics Strategy Update in 2020 and now moved to an experiment in strong-field QED.

Building crypto portfolios with agentic AI
Antonino Castelli, Paolo Giudici, Alessandro Piergallini
https://arxiv.org/abs/2507.20468 https://arxiv.org/pdf/…

Building crypto portfolios with agentic AI
The rapid growth of crypto markets has opened new opportunities for investors, but at the same time exposed them to high volatility. To address the challenge of managing dynamic portfolios in such an environment, this paper presents a practical application of a multi-agent system designed to autonomously construct and evaluate crypto-asset allocations. Using data on daily frequencies of the ten most capitalized cryptocurrencies from 2020 to 2025, we compare two automated investment strategies. …

Ionic emissions and activity evolution in comet C/2020 F3 (NEOWISE): Insights from long-slit spectroscopy and photometry
K. Aravind, E. Jehin, S. Hmmidouch, M. Vander Donckt, S. Ganesh, P. Rousselot, P. Hardy, D. Sahu, J. Manfroid, Z. Benkhaldoun
https://arxiv.org/abs/2507.21707

Ionic emissions and activity evolution in comet C/2020 F3 (NEOWISE): Insights from long-slit spectroscopy and photometry
Comet C/2020 F3 (NEOWISE) was the brightest comet in the northern hemisphere since C/1995 O1 (Hale-Bopp), providing a unique opportunity to study its composition and spatial distribution of emissions. We conducted narrow-band photometry and long-slit low-resolution spectroscopy to monitor the comet's activity and compositional evolution over several weeks post-perihelion. Narrow-band images (OH, NH, CN, C$_2$, C$_3$, BC, GC, RC) and broad-band images (B, V, Rc, Ic) were acquired with TRAPPIST-N…

Strong list-chromatic index of subcubic graphs is at most 10
Yunfang Tang, Zhiwei Bi
https://arxiv.org/abs/2507.11927 https://arxiv.o…

Strong list-chromatic index of subcubic graphs is at most 10
A strong edge coloring of a graph $G$ is an assignment of colors to the edges of $G$ such that two distinct edges are colored differently if they are incident to a common edge or share an endpoint. The strong chromatic index of a graph $G$, denoted by $χ_{s}'(G)$, is the minimum number of colors needed for a strong edge coloring of $G$. The edge weight of a graph $G$ is defined to be $\max\limits_{uv\in E(G)}\{(d_G(u)+d_G(v))\}$. It was proved in Chen et al in 2020 that every graph with edge w…

Photoemission Chronoscopy of the Iodoalkanes
Christian A. Schr\"oder, Maximilian Pollanka, Pascal Freisinger, Matthias Ostner, Maximilian Forster, Sven-Joachim Paul, Reinhard Kienberger
https://arxiv.org/abs/2507.11497

Photoemission Chronoscopy of the Iodoalkanes
Time delays in photoemission are on the order of attoseconds and have been experimentally determined in atoms, molecules and solids. Their magnitude and energy dependence are expected to yield fundamental insights into the properties of the systems in which they're measured. In a recent study Biswas \textsl{et al.} (Biswas, S., Förg, B., Ortmann, L. et al. Probing molecular environment through photoemission delays. Nat. Phys. 16, 778-783 (2020)) determined the absolute photoemission time of th…

The ${\rm SL}(2,\mathbb{C})$-character variety of $8_{18}$
Haimiao Chen
https://arxiv.org/abs/2508.12203 https://arxiv.org/pdf/2508.12203

The ${\rm SL}(2,\mathbb{C})$-character variety of $8_{18}$
The knot $8_{18}$ is the first non-arborescent hyperbolic knot. In 2020, Paoluzzi and Porti found its ${\rm SL}(2,\mathbb{C})$-character variety with the aid of a computer, but many details were omitted. In this paper, we determine the character variety by a software-free procedure, which is easy to follow and enlightening. Along the way, we develop an efficient method for working with simultaneous conjugacy classes of four elements of ${\rm SL}(2,\mathbb{C})$.

Homeownership as Life Cycle Goldmine: Evidence from Macrohistory
Yang Bai, Shize Li, Jialu Shen
https://arxiv.org/abs/2507.17624 https://arxiv.org/pdf/2507…

Homeownership as Life Cycle Goldmine: Evidence from Macrohistory
Should a household buy a home? Using data from 16 developed countries spanning 1870 to 2020, this study provides a resounding affirmative answer. Contrary to popular expert advice, homeownership enhances life cycle wealth by up to 9% and welfare by up to 23%, compared to all-equity investment strategy. Homeownership reduces wealth portfolio risk and improves wealth equality, though it comes at the cost of lower working-life wealth and curtailed financial asset holdings. Gains are heterogeneous:…

Disaster Informatics after the COVID-19 Pandemic: Bibliometric and Topic Analysis based on Large-scale Academic Literature
Ngan Tran, Haihua Chen, Ana Cleveland, Yuhan Zhou
https://arxiv.org/abs/2507.16820

Disaster Informatics after the COVID-19 Pandemic: Bibliometric and Topic Analysis based on Large-scale Academic Literature
This study presents a comprehensive bibliometric and topic analysis of the disaster informatics literature published between January 2020 to September 2022. Leveraging a large-scale corpus and advanced techniques such as pre-trained language models and generative AI, we identify the most active countries, institutions, authors, collaboration networks, emergent topics, patterns among the most significant topics, and shifts in research priorities spurred by the COVID-19 pandemic. Our findings hig…

Beginner's Charm: Beginner-Heavy Teams Are Associated With High Scientific Disruption
Mahdee Mushfique Kamal, Raiyan Abdul Baten
https://arxiv.org/abs/2509.10389 https://

Beginner's Charm: Beginner-Heavy Teams Are Associated With High Scientific Disruption
Teams now drive most scientific advances, yet the impact of absolute beginners -- authors with no prior publications -- remains understudied. Analyzing over 28 million articles published between 1971 and 2020 across disciplines and team sizes, we uncover a universal and previously undocumented pattern: teams with a higher fraction of beginners are systematically more disruptive and innovative. Their contributions are linked to distinct knowledge-integration behaviors, including drawing on broad…

Global Drought Escalation Since 2014: Multivariate Insights for Ecosystem Resilience and Water Security
Qianqian Han, Yijian Zeng, Bob Su
https://arxiv.org/abs/2509.20195 https:…

Global Drought Escalation Since 2014: Multivariate Insights for Ecosystem Resilience and Water Security
How is climate change altering the global patterns, frequency, and intensity of drought? To investigate this, we analyzed global drought events from 2000-2020 using a composite of hydrological indices (Σ(ET-P), SSMI, and GRACE-DSI). Our results reveal that near-normal to severe droughts became increasingly widespread after 2014. Unexpectedly, extreme, 100-year return period droughts occurred not only in semi-arid zones but also in high latitude and typically wet regions. The frequency of these…

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Jeffrey Epstein’s Mystery Bank Came Alive After His Death
Southern Country International received millions of dollars from Mr. Epstein’s estate in December.

Volatile enrichment in low-mass planets: Signatures of past planetary disruption?
Mario Sucerquia, Mat\'ias Montesinos, Ana Mar\'ia Agudelo, Nicol\'as Cuello
https://arxiv.org/abs/2507.11693

Volatile enrichment in low-mass planets: Signatures of past planetary disruption?
Context: Tidal disruption and engulfment events around main-sequence stars, such as the luminous red nova ZTF SLRN-2020 (a candidate planetary-engulfment event), reveal the destruction of close-in giant planets. While current observations focus on stellar accretion and inner dust emission, the fate of the volatile-rich material expelled during disruption remains poorly understood. Aims: We investigate whether the H/He-rich gas expelled from the disrupted planet's envelope and atmosphere can e…

Do Temporary Workers Face Higher Wage Markdowns? Evidence from India's Automotive Sector
Davide Luparello
https://arxiv.org/abs/2507.08222 https://

Do Temporary Workers Face Higher Wage Markdowns? Evidence from India's Automotive Sector
Are temporary workers subject to different wage markdowns than permanent workers? This paper examines productivity, output markups, and wage markdowns in India's automotive sector during 2000--2020. I develop a model integrating CES production, nested logit labor supply, and differentiated labor market conduct: Nash-Bertrand wage setting for temporary workers versus Nash bargaining for unionized permanent workers. Results reveal declining output markups as marginal costs outpace prices through …

Rural #Colorado town with less than 10,000 population has hyped up #cowboy #cops whose excessive force incidents are on dramatic rise, far outpacing #Denver