Tootfinder

Tree decompositions with small width, spread, order and degree
David R. Wood
https://arxiv.org/abs/2509.01140 https://arxiv.org/pdf/2509.01140

Tree decompositions with small width, spread, order and degree
Tree-decompositions of graphs are of fundamental importance in structural and algorithmic graph theory. The main property of tree-decompositions is the width (the maximum size of a bag $-1$). We show that every graph has a tree-decomposition with near-optimal width, plus several additional properties of interest. In particular every graph $G$ with treewidth at most $k$ has a tree-decomposition with width at most $72k+1$, where each vertex $v$ appears in at most $\text{deg}_G(v)+1$ bags, the num…

Am merkitty

On the width and profiles of cosmic filaments
Qi-Rui Yang, Weishan Zhu, GuangYao Yu, Jian-Feng Mo, Yi Zheng, Long-Long Feng
https://arxiv.org/abs/2507.02476

On the width and profiles of cosmic filaments
We investigated the widths and profiles of cosmic filaments using the IllustrisTNG simulations. Filaments were identified with DisPerSE, using galaxy samples in simulations as input. Since the width of an individual filament can vary significantly along its spine, we divided each filament into segments with lengths between $1.5\,h^{-1}\,\mathrm{Mpc}$ and $2.5\,h^{-1}\,\mathrm{Mpc}$ and measure their properties. The typical width of these filament segments increases gradually from approximately …

Hamiltonicity Parameterized by Mim-Width is (Indeed) Para-NP-Hard
Benjamin Bergougnoux, Lars Jaffke
https://arxiv.org/abs/2507.00612 https://

Hamiltonicity Parameterized by Mim-Width is (Indeed) Para-NP-Hard
We prove that Hamiltonian Path and Hamiltonian Cycle are NP-hard on graphs of linear mim-width 26, even when a linear order of the input graph with mim-width 26 is provided together with input. This fills a gap left by a broken proof of the para-NP-hardness of Hamiltonicity problems parameterized by mim-width.

On-chip amplification-free fCEO detection and broadband SCG in parabolically width-modulated TFLN waveguides
Tianyou Tang, Simin Yu, Ruixin Zhou, Jianing Zhang, Juanjuan Lu, Guanyu Chen, Tao Zhu, Lingfang Wang
https://arxiv.org/abs/2509.00394

On-chip amplification-free fCEO detection and broadband SCG in parabolically width-modulated TFLN waveguides
We demonstrate amplification-free carrier-envelope offset (fCEO) detection in parabolically width-modulated z-cut thin-film lithium niobate (TFLN) waveguide that simultaneously engineers dispersion and enhances nonlinear interactions. With 116 fs pulses at 1560 nm, the device generates more than two octaves broadband SCG spanning 600 to beyond 2400 nm, enabling spectral overlap between dispersive waves and second-harmonic generation near 780 nm for robust f-2f self-referencing. Most notably, we…

Favorable modifications of Scrape-Off Layer (SOL) heat flux width through pulsed fuelling in ADITYA-U Tokamak
SK Injamul Hoque (Institute for Plasma Research, Gandhinagar, India, Homi Bhabha National Institute, Mumbai, India), Harshita Raj (Institute for Plasma Research, Gandhinagar, India, Homi Bhabha National Institute, Mumbai, India), Ritu Dey (Department of Physics, Indian Institute of Technology Tirupati, Yerpedu, India), Soumitra Banerjee (Institute for Plasma Research, Gandhinag…

Favorable modifications of Scrape-Off Layer (SOL) heat flux width through pulsed fuelling in ADITYA-U Tokamak
Enhancement of the scrape-off layer (SOL) heat flux width has been observed in the ADITYA-U Tokamak following the injection of short fuel gas pulses. A notable reduction in parallel heat flux near the last closed flux surface (LCFS) is observed after each pulse. Comparative analysis indicates that pulsed fuelling is more effective in mitigating heat flux with improved core confinement than continuous gas feeding via real-time density control. Analytical and simulation works are also carried out…

Brand durch Angriffe auf Odessa
Behörden zufolge hat Russland die ukrainische Stadt Odessa in der Nacht erneut mit Drohnen attackiert. Verletzt worden sei niemand, jedoch sei ein Lagerhaus in Brand geraten. Etwa 40 Einsatzkräfte der Feuerwehr rückten aus, um den Brand zu bekämpfen.
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I'm up to 109,977 CSP points, 87,182 United Miles, 30,000 Hyatt Bonus Rewards, and 102,218 Venture X miles. (It's the power of the Welcome Bonus.) By the end of the year, I want to get Hyatt up to 60,000 and then I should be able to cover hotels on the CSP and Hyatt points and cover airfare on the other two for two weeks in Japan. I'm travel-hacking the shit out of my 2026 trip.
#Travel #TravelHacking #CreditCardPoints

Laser-drive droplet deformation at low Weber numbers
M. Kharbedia, H. Franca, H. K. Schuber, D. J. Engels, M. Jalaal, O. O. Versolato
https://arxiv.org/abs/2509.01495 https://…

Laser-drive droplet deformation at low Weber numbers
We investigate droplet deformation following laser-pulse impact at low Weber numbers (We ~ 0.1-100). Droplet dynamics can be characterized by two key parameters: the impact We number and the width, W, of the distribution of the impact force over the droplet surface. By varying laser pulse energy, our experiments traverse a phase space comprising (I) droplet oscillation, (II) breakup, or (III) sheet formation. Numerical simulations complement the experiments by determining the pressure width and…

First-principles response simulation of wide-gap CdTe-DSDs for the FOXSI solar sounding rocket experiment
Shunsaku Nagasawa, Takahiro Minami, Tadayuki Takahashi, Shin Watanabe
https://arxiv.org/abs/2509.00738

First-principles response simulation of wide-gap CdTe-DSDs for the FOXSI solar sounding rocket experiment
We have developed a wide-gap CdTe double-sided strip detector (CdTe-DSD) for the fourth and fifth flights of the Focusing Optics X-ray Solar Imager sounding rocket experiment (FOXSI-4/FOXSI-5). This detector features a 30 um strip width and a variable gap width from 30 um to 70 um, enabling position resolution finer than the strip pitch by inducing charge sharing across adjacent strip electrodes and utilizing this shared energy information for position reconstruction. However, this wide-gap con…

How far have metals reached? Reconciling statistical constraints and enrichment models at Reionization
Sebastian Lopez, Jens-Kristian Krogager
https://arxiv.org/abs/2509.02434 h…

How far have metals reached? Reconciling statistical constraints and enrichment models at Reionization
The incidence of quasar absorption systems and the space density of their galaxies are proportional, the proportionality factor being the mean absorbing cross section. In this paper we use redshift parameterizations of these two statistics to predict the cosmic evolution of an equivalent-width ($W_r$) radial profile model, tailored for the low-ionization species Mg II and O I. Our model provides an excellent match with well-sampled, low-redshift Mg II equivalent-width/impact-parameter pairs fro…

On the shape of the typical Poisson-Voronoi cell in high dimensions
Matthias Irlbeck, Zakhar Kabluchko, Tobias M\"uller
https://arxiv.org/abs/2506.02607

On the shape of the typical Poisson-Voronoi cell in high dimensions
We study the typical cell of the Poisson-Voronoi tessellation. We show that when divided by the $d$-th root of the intensity parameter $λ$ of the Poisson process times the volume of the unit ball, the inradius, outradius, diameter and mean width of the typical cell converge in probability to the constants $1/2, 1, 2, 2$ respectively, as the dimension $d\to\infty$. We also show that the width of the typical cell, when rescaled in the same way, is bounded between $2\sqrt{5}/(2+\sqrt{5})-o_d(1)$ …

On the chromatic number of random triangle-free graphs
Clayton Mizgerd, Will Perkins, Yuzhou Wang
https://arxiv.org/abs/2509.01376 https://arxiv.org/pdf/25…

On the chromatic number of random triangle-free graphs
We study the chromatic number of typical triangle-free graphs with $Θ\left( n^{3/2} (\log n)^{1/2} \right)$ edges and establish the width of the scaling window for the transitions from $χ= 3$ to $χ= 4$ and from $χ= 4$ to $χ= 5$. The transition from $3$- to $4$-colorability has scaling window of width $Θ(n^{4/3} (\log n)^{-1/3})$. To prove this, we show a high probability equivalence of the $3$-colorability of a random triangle-free graph at this density and the satisfiability of an inst…

Other girls on fedi are so smart

A Practical Linear Time Algorithm for Optimal Tree Decomposition of Halin Graphs
J. A. Alejandro-Soto, Joel Antonio Trejo-Sanchez, Carlos Segura
https://arxiv.org/abs/2506.02346

A Practical Linear Time Algorithm for Optimal Tree Decomposition of Halin Graphs
This work proposes \textsc{H-Td}, a practical linear-time algorithm for computing an optimal-width tree decomposition of Halin graphs. Unlike state-of-the-art methods based on reduction rules or separators, \textsc{H-Td} exploits the structural properties of Halin graphs. Although two theoretical linear-time algorithms exist that can be applied to graphs of treewidth three, no practical implementation has been made publicly available. Furthermore, extending reduction-based approaches to partial…

Französischer Außenminister im Élysée-Palast eingetroffen
Der französische Außenminister Jean-Noël Barrot ist bereits im Élysée-Palast eingetroffen, wo später die Beratungen von etwa 30 Staats- und Regierungschefs über weitere Hilfen und Sicherheitsgarantien für die Ukraine beginnen sollen.
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Rigid body rotation and chiral reorientation combine in filamentous E. coli swimming in low-Re flows
Richard Z. DeCurtis, Yongtae Ahn, Jane Hill, Sara M. Hashmi
https://arxiv.org/abs/2508.00779

Rigid body rotation and chiral reorientation combine in filamentous E. coli swimming in low-Re flows
Antibiotic doses below a minimum inhibitory concentration turn off bacteria cell division, but not cell growth. As a result, rod-like bacteria including E. coli can elongate many times their original length without increasing their width. The swimming behavior of these filamentous bacteria through small channels may provide insights into how antibiotic-resistant bacteria swim to channel walls. Such swimming behaviors in settings like hospital tubing may facilitate adhesion, biofilm formation an…

The Roper Resonance $N^*(1440)$ in Nucleon-Nucleon Collisions and the Issue of Dibaryons
Heinz Clement
https://arxiv.org/abs/2507.01937 https://

The Roper Resonance $N^*(1440)$ in Nucleon-Nucleon Collisions and the Issue of Dibaryons
In many reactions leading to excitations of the nucleon the Roper resonance $N^*(1440)$ can be sensed only by complex partial-wave analyses. In nucleon-nucleon collisions the isoscalar single-pion production as well as specific two-pion production channels present the Roper excitation free of competing resonance processes at a mass of 1370 MeV and a width of 150 MeV. A detailed analysis points to the formation of $N^*(1440)N$ dibaryonic systems during the nucleon-nucleon collision process simil…

A Graph Width Perspective on Partially Ordered Hamiltonian Paths and Cycles I: Treewidth, Pathwidth, and Grid Graphs
Jesse Beisegel, Katharina Klost, Kristin Knorr, Fabienne Ratajczak, Robert Scheffler
https://arxiv.org/abs/2506.23790

A Graph Width Perspective on Partially Ordered Hamiltonian Paths and Cycles I: Treewidth, Pathwidth, and Grid Graphs
We consider the problem of finding a Hamiltonian path or a Hamiltonian cycle with precedence constraints in the form of a partial order on the vertex set. We show that the path problem is $\mathsf{NP}$-complete for graphs of pathwidth 4 while the cycle problem is $\mathsf{NP}$-complete on graphs of pathwidth 5. We complement these results by giving polynomial-time algorithms for graphs of pathwidth 3 and treewidth 2 for Hamiltonian paths as well as pathwidth 4 and treewidth 3 for Hamiltonian cy…

Sub-GHz Breathing Dynamics of Magnetic Hopfions
Felipe Tejo, Rub\'en M. Otxoa
https://arxiv.org/abs/2509.00580 https://arxiv.org/pdf/2509.00580

Sub-GHz Breathing Dynamics of Magnetic Hopfions
Magnetic hopfions are three-dimensional topological solitons whose static stability has recently been confirmed in experiments, yet their dynamical modes remain largely unexplored. Here we combine micromagnetic simulations and analytical modelling to characterise the fundamental breathing excitation of hopfions. We show that the breathing mode corresponds to a coherent oscillation of both the hopfion core diameter and the shell width, while preserving the topological charge. An analytical domai…

A Product Formula for Family Indices and Family Band Width Estimates
Chenkai Song
https://arxiv.org/abs/2507.21594 https://arxiv.org/pdf/2507.21594

A Product Formula for Family Indices and Family Band Width Estimates
We extend Gromov's conjecture on the sharp estimate of band width to the family case and prove that it holds for fiber bundles having infinite A-hat area. The method we employ is based on the Dirac operators and the family index theory. Our proof relies on a product formula for index bundles established in this paper.

The Effect of Aqueous Medium on Nucleobase Shape Resonances: Insights from Microsolvation
Jishnu Narayanan, Divya Tripathi, Idan Haritan, Achintya Kumar Dutta
https://arxiv.org/abs/2509.00261

The Effect of Aqueous Medium on Nucleobase Shape Resonances: Insights from Microsolvation
We have studied the effect of microhydration on the shape resonances of uracil nucleobase. The resonance parameters were determined using the resonance via Padé approach along with the efficient wave function-based EA-EOM-DLPNO-CCSD method. Our results showed that the uracil resonances become stabilized with an increase in the extent of microsolvation. The energy of the resonances decreased, and the width increased as the number of water molecules surrounding uracil was increased. It showed th…

The Ports of New York Winery looks like it was part of the set for a cowboy movie
#photo #photography #buildings #ithaca

Angriff auch auf Kiew
Nach Angaben des ukrainischen Militärs hat die Ukraine auch einen russischen Luftangriff auf die Hauptstadt Kiew abgewehrt. "Die Luftabwehr ist in Kiew im Einsatz! Bleiben Sie in den Schutzräumen, bis Entwarnung gegeben wird!", teilte Timur Tkachenko, Leiter der Militärverwaltung von Kiew, bei Telegram mit.
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Probing the spectral width of the 12.4-keV solid-state $^{45}$Sc isomeric resonance
Peifan Liu, Miriam Gerharz, Berit Marx-Glowna, Willi Hippler, Jan-Etienne Pudell, Alexey Zozulya, Brandon Stone, Deming Shu, Robert Loetzsch, Sakshath Sadashivaiah, Lars Bocklage, Christina Boemer, Shan Liu, Vitaly Kocharyan, Dietrich Krebs, Tianyun Long, Weilun Qin, Matthias Scholz, Kai Schlage, Ilya Sergeev, Hans-Christian Wille, Ulrike Boesenberg, Gianluca Aldo Geloni, J\"org Hallmann, Wonhyuk J…

Probing the spectral width of the 12.4-keV solid-state $^{45}$Sc isomeric resonance
The $^{45}$Sc nuclear transition from the ground to the isomeric state at 12.389~keV, with a lifetime of 0.46~s, exhibits an extraordinarily narrow natural width of 1.4~feV and a quality factor $\simeq 10^{19}$ -- surpassing those of the most precise atomic clocks -- making $^{45}$Sc a compelling platform for advanced metrology and nuclear clocks. Here we investigate how closely the spectral width and quality factor of the solid-state $^{45}$Sc resonance can approach these natural limits. Using…

I just noticed that #Thunderbird supports #IRC and #Matrix protocols . When did that happen? I feel like I live under a rock...
#matrix_org

Microscale architected materials for elastic wave guiding: Fabrication and dynamic characterization across length and time scales
Vignesh Kannan, Charles Dorn, Ute Drechsler, Dennis M. Kochmann
https://arxiv.org/abs/2507.01757

Microscale architected materials for elastic wave guiding: Fabrication and dynamic characterization across length and time scales
We present an experimental protocol for the fabrication and characterization of scalable microarchitected elastic waveguides. Using silicon microfabrication techniques, we develop free-standing 2D truss-based architected waveguides with a maximum diameter of 80 mm, unit cells size of 100 micrometer, and minimum beam width of 5 micrometer, thus achieving scale separation. To characterize elastic wave propagation, we introduce a custom-built scanning optical pump-probe experiment that enables con…

Finite-Width Neural Tangent Kernels from Feynman Diagrams
Max Guillen, Philipp Misof, Jan E. Gerken
https://arxiv.org/abs/2508.11522 https://arxiv.org/pdf/…

Finite-Width Neural Tangent Kernels from Feynman Diagrams
Neural tangent kernels (NTKs) are a powerful tool for analyzing deep, non-linear neural networks. In the infinite-width limit, NTKs can easily be computed for most common architectures, yielding full analytic control over the training dynamics. However, at infinite width, important properties of training such as NTK evolution or feature learning are absent. Nevertheless, finite width effects can be included by computing corrections to the Gaussian statistics at infinite width. We introduce Feyn…

Yes, Google, I definitely need to make an "engaging video with AI” for my document of paid ad performance metrics and projections.
This is totally, definitely, indubitably a legitimate use case for a product that you're pushing on your users. *heavy sacrasm*

Observation of orbitally excited $B_{c}^{ }$ states
LHCb collaboration, et al.
https://arxiv.org/abs/2507.02149 https://arxiv.org/pdf…

Observation of orbitally excited $B_{c}^{+}$ states
The observation of a wide peaking structure in the $B_{c}^{+} γ$ mass spectrum is reported using proton-proton collision data collected by the LHCb detector at center-of-mass energies of $7$, $8$ and $13~\text{TeV}$, corresponding to a total integrated luminosity of $9~\text{fb}^{-1}$. The statistical significance over the background-only hypothesis exceeds seven standard deviations. The width of the observed structure is larger than the expectation from a single-peak hypothesis, and is well d…

Determining the width of $D_{s0}^{*}(2317)$ by using $T_{c\bar{s}0}^{a}(2327)$ in a molecular frame
Zi-Li Yue, Quan-Yun Guo, Dian-Yong Chen, Elena Santopinto
https://arxiv.org/abs/2507.19641

Determining the width of $D_{s0}^{*}(2317)$ by using $T_{c\bar{s}0}^{a}(2327)$ in a molecular frame
Motivated by the recent observation of the open-charm tetraquark $T_{c\bar{s}0}^{a}(2327)$ by the LHCb Collaboration, as well as results from Lattice QCD calculations, we consider the $T_{c\bar{s}0}^{a}(2327)$ and the $D_{s0}^{*}(2317)$ as $DK$ molecular states, with $I(J^{P})$ equal to $1(0^{+})$ and $0(0^{+})$, respectively, and we investigate their strong decay behavior in an effective Lagrangian approach. Within the model parameter range, we can reproduce the $T_{c\bar{s}0}^{a}(2327)$ exper…

Derivations of two one-dimensional models for transversely curved shallow shells: one leads to relaxation
Paroni Roberto, Picchi Scardaoni Marco
https://arxiv.org/abs/2507.23545

Derivations of two one-dimensional models for transversely curved shallow shells: one leads to relaxation
We study the $Γ$-limit of sequences of variational problems for straight, transversely curved shallow shells, as the width of the planform $\varepsilon$ goes to zero. The energy is of von Kármán type for shallow shells under suitable boundary conditions. What distinguishes the various regimes is the scaling of the stretching energy $\sim \varepsilon^{2β}$, with $β$ a positive number. We derive two one-dimensional models as $β$ ranges in $(0, 2]$. Remarkably, boundary conditions are esse…

It would be so cool to live on the sea

Simulating Posterior Bayesian Neural Networks with Dependent Weights
Nicola Apollonio, Giovanni Franzina, Giovanni Luca Torrisi
https://arxiv.org/abs/2507.22095 https://

Simulating Posterior Bayesian Neural Networks with Dependent Weights
In this paper we consider posterior Bayesian fully connected and feedforward deep neural networks with dependent weights. Particularly, if the likelihood is Gaussian, we identify the distribution of the wide width limit and provide an algorithm to sample from the network. In the shallow case we explicitly compute the distribution of the output, proving that it is a Gaussian mixture. All the theoretical results are numerically validated.

This is kind of fun. Using an infrared receiver module (TSOP38238) to display the signals produced by a Blu-Ray player remote control on an oscilloscope. The signals are active-low and pulse-width modulated.
#electronics #oscilloscope

The Effect of Photometric Errors on the Measured Width of the Main Sequence in Star Clusters
Steven R. Spangler
https://arxiv.org/abs/2506.14585 https://…

The Effect of Photometric Errors on the Measured Width of the Main Sequence in Star Clusters
This paper deals with the effect of errors in the B and V magnitudes, or measurements in any other color system, on the width of the main sequence in a color-magnitude (Hertzsprung-Russell) diagram. The width is defined as the dispersion in apparent (or absolute) magnitude at a fixed, measured photometric color. I find that the dispersion is larger than might be thought, a priori. A statistical analysis is presented which demonstrates that the error in the magnitude residual from a linear appro…

Accounting for shelf width in selecting altimetry observations for coastal sea level variability improves its agreement with tide gauges
Vandana Sukumaran, Bramha Dutt Vishwakarma
https://arxiv.org/abs/2508.20046

Accounting for shelf width in selecting altimetry observations for coastal sea level variability improves its agreement with tide gauges
A novel dynamically varying search radius algorithm is developed that takes advantage of bathymetry information to choose satellite observations that represent coastal sea level variability better. The algorithm is successfully tested at 155 tide gauge stations around the globe and demonstrates broader applicability across different coastal regimes compared to existing validation methods. This is supported by consistently higher median correlation and lower median Normalized Root Mean Square Er…

Exploration of Low-Cost but Accurate Radar-Based Human Motion Direction Determination
Weicheng Gao
https://arxiv.org/abs/2507.22567 https://arxiv.org/pdf/2…

Exploration of Low-Cost but Accurate Radar-Based Human Motion Direction Determination
This work is completed on a whim after discussions with my junior colleague. The motion direction angle affects the micro-Doppler spectrum width, thus determining the human motion direction can provide important prior information for downstream tasks such as gait recognition. However, Doppler-Time map (DTM)-based methods still have room for improvement in achieving feature augmentation and motion determination simultaneously. In response, a low-cost but accurate radar-based human motion directi…

Replaced article(s) found for cs.DS. https://arxiv.org/list/cs.DS/new
[1/1]:
- A new width parameter of graphs based on edge cuts: $\alpha$-edge-crossing width
Yeonsu Chang, O-joung Kwon, Myounghwan Lee

So, the annual evaluation only covers my performance on 06/30/2025?

Replaced article(s) found for cs.DM. https://arxiv.org/list/cs.DM/new
[1/1]:
- A new width parameter of graphs based on edge cuts: $\alpha$-edge-crossing width
Yeonsu Chang, O-joung Kwon, Myounghwan Lee

Line Aspect Ratio
Arash Vaezi
https://arxiv.org/abs/2506.20508 https://arxiv.org/pdf/2506.20508…

Line Aspect Ratio
We address the problem of covering a target segment $\overline{uv}$ using a finite set of guards $\mathcal{S}$ placed on a source segment $\overline{xy}$ within a simple polygon $\mathcal{P}$, assuming weak visibility between the target and source. Without geometric constraints, $\mathcal{S}$ may be infinite, as shown by prior hardness results. To overcome this, we introduce the {\it line aspect ratio} (AR), defined as the ratio of the \emph{long width} (LW) to the \emph{short width} (SW) of $\…

Die F.A.Z berichtet über den und schreibt gleich in der ersten Zeile "1. SC Magdeburg". 🤭
Aber wenigstens kein "F". Aber interessant, was der Alt-Bundesbürger so wissen will, über die erfolreichen #Ossis. Reicht das Geld noch jetzt wo Intel weg ist? Wie machen die das, da im Niemandsland ...
Ich mag Schmedt und Wiegert. Die sind einfach die richtigen.
https://www.faz.net/aktuell/sport/mehr-sport/wie-steckt-der-handballklub-sc-magdeburg-intels-ausfall-weg-accg-110659005.html

Today's quest: I need one tiny bolt, about two millimeters width, maybe a half centimeter long and thread pitch unknown, to fasten a gear to a tuning peg shaft. I live downtown Toronto. What are my chances?

Multi-fidelity Bayesian Data-Driven Design of Energy Absorbing Spinodoid Cellular Structures
Leo Guo, Hirak Kansara, Siamak F. Khosroshahi, GuoQi Zhang, Wei Tan
https://arxiv.org/abs/2507.22079

Multi-fidelity Bayesian Data-Driven Design of Energy Absorbing Spinodoid Cellular Structures
Finite element (FE) simulations of structures and materials are getting increasingly more accurate, but also more computationally expensive as a collateral result. This development happens in parallel with a growing demand of data-driven design. To reconcile the two, a robust and data-efficient optimization method called Bayesian optimization (BO) has been previously established as a technique to optimize expensive objective functions. In parallel, the mesh width of an FE model can be exploited…

Anticipating:
https://i.guim.co.uk/img/media/0ca56ef3eead3edd54803d85b81be508e33d62e3/0_0_4046_3278/master/4046.jpg?width=1900&dpr=2&s=none&crop=none

Anticipating:
https://i.guim.co.uk/img/media/0ca56ef3eead3edd54803d85b81be508e33d62e3/0_0_4046_3278/master/4046.jpg?width=1900&dpr=2&s=none&crop=none

Would you be interested on a European #coop alternative to #Github for your private/for-profit projects (paid service)?
I welcome comments elaborating on why you said "yes", "maybe" or "no" .
Note: I'm aware of other alternatives like Gitlab, Bitbucket, Gitea, Codeberg... None of those match what I'm asking about for one or more reasons.
#EU #SovereignTech #SovereignCloud #privacy #GDPR #cooperatives
No
Maybe
Yes

The 4th Dimension for Scaling Model Size
Ruike Zhu, Hanwen Zhang, Tianyu Shi, Chi Wang, Tianyi Zhou, Zengyi Qin
https://arxiv.org/abs/2506.18233 https://…

The 4th Dimension for Scaling Model Size
Scaling the size of large language models typically involves three dimensions: depth, width, and the number of parameters. In this work, we explore a fourth dimension, virtual logical depth (VLD), which increases the effective algorithmic depth without changing the overall parameter count by reusing parameters within the model. Although parameter reuse is not a new concept, its potential and characteristics in model scaling have not been thoroughly studied. Through carefully designed controlled…

Shape optimization under width constraint: the Cheeger constant and the torsional rigidity
Beniamin Bogosel
https://arxiv.org/abs/2506.07708 https://

Shape optimization under width constraint: the Cheeger constant and the torsional rigidity
In this article it is shown that the equilateral triangle maximizes the Cheeger constant and minimizes the torsional rigidity among shapes having a fixed minimal width. The proof techniques use direct comparisons with simpler shapes, consisting of disks with three disjoint caps. Comparison results for harmonic functions help establish that in non-equilateral configurations the shape derivative has an appropriate sign, contradicting optimality.

Somehow we made this part of the Queensboro Bridge worse. This is a 3-4ft wide two-way bike lane. There's so much wrong with this, from the metal manhole cover taking up almost the entire width of the bike lane, to the MUTCD-violating usage of sharrows, to those shitty rumble strip/speed bump things THAT ARE LOOSE.
Wtaf! #bikeNYC
@…

I have often been unhappy that the line type in a #ggplot2 legend is not clearly visible. Today, I found a simple solution: simply use
theme(legend.key.width = unit(1, "cm"))
Replace 1 with any other value that you like (not too small, of course!).
#rstats

Arithmetic Y-frieze patterns of width 3 and 4
Katsuhiko Matsuzaki, Taiki Resnick
https://arxiv.org/abs/2508.15330 https://arxiv.org/pdf/2508.15330

Arithmetic Y-frieze patterns of width 3 and 4
We determine all arithmetic Y-Frieze patterns of width $3$ and $4$. As a consequence, for $n=3,4$, we verify the surjectivity of a map $p_n$ which corresponds arithmetic Y-Frieze patterns of width $n$ to Coxeter's Frieze patterns.

The GINN framework: a stochastic QED correspondence for stability and chaos in deep neural networks
Rodrigo Carmo Terin
https://arxiv.org/abs/2508.18948 https://

The GINN framework: a stochastic QED correspondence for stability and chaos in deep neural networks
The development of a Euclidean stochastic field-theoretic approach that maps deep neural networks (DNNs) to quantum electrodynamics (QED) with local U(1) symmetry is presented. Neural activations and weights are represented by fermionic matter and gauge fields, with a fictitious Langevin time enabling covariant gauge fixing. This mapping identifies the gauge parameter with kernel design choices in wide DNNs, relating stability thresholds to gauge-dependent amplification factors. Finite-width fl…

Heavy scalar molecule $B_{c}^{ } B_{c}^{-}$
S. S. Agaev, K. Azizi, H. Sundu
https://arxiv.org/abs/2506.19927 https://arxiv.org/pdf/25…

Heavy scalar molecule $B_{c}^{+} B_{c}^{-}$
Mass and full width of the heavy scalar molecule $\mathcal{M}$ composed of the mesons $B_{c}^{+}$ and $B_{c}^{-}$ are calculated in QCD sum rule framework. To find its mass and current coupling we apply the two-point sum rule method. The width of the hadronic molecule $\mathcal{M} =B_{c}^{+}B_{c}^{-}$ is evaluated by taking into account its dissociation to $η_cη_{b}, J/ψΥ$, and $ B_{c}^{+}B_{c}^{-} $ mesons. Decays into $D$ and $B$ meson pairs with appropriate charges and quantum numbers tr…

Near-Field Variable-Width Beam Coverage and Codebook Design for XL-RIS
Yida Zhang, Qiuyan Liu, Qiang Wang, Hongtao Luo, Yuqi Xia
https://arxiv.org/abs/2508.11178 https://…

Near-Field Variable-Width Beam Coverage and Codebook Design for XL-RIS
To mitigate the issue of limited base station coverage caused by severe high-frequency electromagnetic wave attenuation, Extremely Large Reconfigurable Intelligent Surface (XL-RIS) has garnered significant attention due to its high beam gain. However, XL-RIS exhibits a narrower beam width compared to traditional RIS, which increases the complexity of beam alignment and broadcast. To address this problem, we propose a variable-width beam generation algorithm under the near-field assumption and a…

Bistable quartic soliton in saturable nonlinear media
Tiyas Das, Anuj Pratim Lara, Samudra Roy
https://arxiv.org/abs/2506.23847 https://

Bistable quartic soliton in saturable nonlinear media
In this letter, for the first time, to the best of our knowledge, we theoretically demonstrate the existence of novel bistable quartic soliton (BQS) in saturable nonlinear media. We propose a realistic dispersion-engineered ridge waveguide based on Lithium Niobate (LiNbO3) that offers a suitable environment to excite the family of BQS. Adopting the variational method we analytically establish the amplitude-width relation which reveals that stable QSs with identical duration but two different …

Distinct element-specific nanoscale magnetization dynamics following ultrafast laser excitation
Emma Bernard, Rahul Jangid, Nanna Zhou Hagstr\"om, Meera Madhavi, Jeffrey A. Brock, Matteo Pancaldi, Dario De Angelis, Flavio Capotondi, Emanuele Pedersoli, Kyle Rockwell, Mark W. Keller, Stefano Bonetti, Eric E. Fullerton, Ezio Iacocca, Thomas J. Silva, Roopali Kukreja

Distinct element-specific nanoscale magnetization dynamics following ultrafast laser excitation
Time-resolved ultrafast extreme ultraviolet (EUV) magnetic scattering is used to study laser-driven ultrafast magnetization dynamics of labyrinthine domains in a [Co/Ni/Pt] multilayer. Our measurements at the Co and Ni M-edges reveal distinct ultrafast distortions of the scattering pattern position and width for Ni compared to Co. Ni shows a strong modification of the scattering pattern, 9 to 41 times stronger than Co. As distortions of the labyrinthine pattern in reciprocal space relate to the…

Measuring the splashback feature: Dependence on halo properties and history
Qiaorong S. Yu (Oxford Math, Oxford Physics), Stephanie O'Neil (UPenn, Princeton, MIT), Xuejian Shen (MIT), Mark Vogelsberger (MIT), Sownak Bose (Durham), Boryana Hadzhyska (Lawrence Berkeley Lab, UC Berkeley, Cambridge Astronomy, Kavli Institute Cambridge), Lars Hernquist (CfA Harvard), Rahul Kannan (York), Monica Wu (NYU Math), Ziang Wu (NYU Math, NYU Engineering)

Measuring the splashback feature: Dependence on halo properties and history
In this study, we define the novel splashback depth $\mathcal{D}$ and width $\mathcal{W}$ to examine how the splashback features of dark matter haloes are affected by the physical properties of haloes themselves. We use the largest simulation run in the hydrodynamic MillenniumTNG project. By stacking haloes in bins of halo mass, redshift, mass-dependent properties such as peak height and concentration, and halo formation history, we measure the shape of the logarithmic slope of the density prof…

D3FNet: A Differential Attention Fusion Network for Fine-Grained Road Structure Extraction in Remote Perception Systems
Chang Liu, Yang Xu, Tamas Sziranyi
https://arxiv.org/abs/2508.15537

D3FNet: A Differential Attention Fusion Network for Fine-Grained Road Structure Extraction in Remote Perception Systems
Extracting narrow roads from high-resolution remote sensing imagery remains a significant challenge due to their limited width, fragmented topology, and frequent occlusions. To address these issues, we propose D3FNet, a Dilated Dual-Stream Differential Attention Fusion Network designed for fine-grained road structure segmentation in remote perception systems. Built upon the encoder-decoder backbone of D-LinkNet, D3FNet introduces three key innovations:(1) a Differential Attention Dilation Extra…

I’m always excited to see people moving to vehicles that are (1) smaller and (2) more electric/human-powered. However, I probably agree with @… on this one.
Questions for this and any such “Should it use bike infrastructure?” situation:
1. Does it have emissions while in operation?
2. Does it regularly •stop• in the bike line (in practice, not just in theory)?
3. Does it block the full width of a narrow-ish urban bike lane, and thus prevent passing where a cargo bike would allow it?
4. What’s the magnitude of its momentum (weight times speed) while in operation? https://social.wildeboer.net/@jwildeboer/114845877730092611

Just got a small space heater and damn it’s so much more comfortable here now
As a @… fan I’d prefer if my AC/heat pump supported heating mode, but welp it was already installed when I moved here so an electric heater will do it for the 2 days a year it’s actually cold enough for that to be useful here. Getting all that heat from the bedroom to the living room would be a problem anyway.
And I didn’t even need to make a fire hazard in order to use it since a 20A outlet was already around due to the coffee thingy, yay!
It’s been on for just around 40mins and it’s already sooo much better in here (the temp sensor is not on the side the heater is pointing to (the sofa) so it’ll take a while for it to reflect the change specially since this is a big room (kitchen dinner living), but just pointing the heater to where I’m at is enough to make it a comfortable temperature (and probably even way too hot in a bit)).
I’ve been wanting this for a while, but it never felt worth it bc we don’t really have many cold days here. Tho this year we got some more I think and today was specially cold (9~11°C) so I decided to just do it. Extra points bc it was available on fucking iFood of all places so it arrived less than an hour after I ordered it lmao.

A parametric tensor ROM for the shallow water dam break problem
Md Rezwan Bin Mizan, Maxim Olshanskii, Ilya Timofeyev
https://arxiv.org/abs/2506.20007 http…

A parametric tensor ROM for the shallow water dam break problem
We develop a variant of a tensor reduced-order model (tROM) for the parameterized shallow-water dam-break problem. This hyperbolic system presents multiple challenges for model reduction, including a slow decay of the Kolmogorov $N$-width of the solution manifold, shock formation, and the loss of smooth solution dependence on parameters. These issues limit the performance of traditional Proper Orthogonal Decomposition based ROMs. Our tROM approach, based on a low-rank tensor decomposition, buil…

Adding a Storage Pool improves 3-PG Tree-ring Simulations
Yanfang Wang, Liang Wei, Liheng Zhong, Xizi Yu, Pengtao Huang, Fang Wang, John D. Marshall
https://arxiv.org/abs/2508.18327

Adding a Storage Pool improves 3-PG Tree-ring Simulations
Tree rings provide long-term records of tree growth and climate changes, which makes them ideal benchmarks for forest modeling. Tree-ring information has greatly improved the reliability of 3-PG, which is one of the most commonly used process-based forest growth models. Here we strengthen 3-PGs ability to simulate tree-ring width and carbon stable isotopes (δ13C) by enhancing its descriptions of tree physiology. The major upgrade was adding a carbon storage pool for tree-ring formation using s…

A Halpha metric for identifying dormant black holes in X-ray transients
J. Casares, M. A. P. Torres, S. Navarro Umpi\'errez
https://arxiv.org/abs/2506.13765

A Halpha metric for identifying dormant black holes in X-ray transients
Dormant black holes (BHs) in X-ray transients can be identified by the presence of broad Ha emission lines from quiescent accretion discs. Unfortunately, short-period cataclysmic variables (CVs) can also produce broad Ha lines, especially when viewed at high inclinations, and are thus a major source of contamination. Here we compare the full width at half maximum (FWHM) and equivalent width (EW) of the Ha line in a sample of 20 quiescent BH transients and 354 CVs (305 from SDSS I to IV) with se…

CUPE: Contextless Universal Phoneme Encoder for Language-Agnostic Speech Processing
Abdul Rehman, Jian-Jun Zhang, Xiaosong Yang
https://arxiv.org/abs/2508.15316 https://

CUPE: Contextless Universal Phoneme Encoder for Language-Agnostic Speech Processing
Universal phoneme recognition typically requires analyzing long speech segments and language-specific patterns. Many speech processing tasks require pure phoneme representations free from contextual influence, which motivated our development of CUPE - a lightweight model that captures key phoneme features in just 120 milliseconds, about one phoneme's length. CUPE processes short, fixed-width windows independently and, despite fewer parameters than current approaches, achieves competitive cross-…

Diffusion in the Inverted Triangular Soft Lorentz Gas
Esko Toivonen, Aleksi Majaniemi, Rainer Klages, Esa R\"as\"anen
https://arxiv.org/abs/2506.23792

Diffusion in the Inverted Triangular Soft Lorentz Gas
We investigate diffusion in a two-dimensional inverted soft Lorentz gas, where attractive Fermi-type potential wells are arranged in a triangular lattice. This configuration contrasts with earlier studies of soft Lorentz gases involving repulsive scatterers. By systematically varying the gap width and softness of the potential, we explore a rich landscape of diffusive behaviors. We present numerical simulations of the mean squared displacement and compute diffusion coefficients, identifying ton…

Probing In-Medium Effect via Giant Dipole Resonance in the Extended Quantum Molecular Dynamics Model
Chen-Zhong Shi, Xiang-Zhou Cai, Yu-Gang Ma
https://arxiv.org/abs/2508.17432 …

Probing In-Medium Effect via Giant Dipole Resonance in the Extended Quantum Molecular Dynamics Model
This article uses a stochastic approach to analyze the collision term, rather than the geometric method used in the original EQMD model, to examine the width of the isovector giant dipole resonance (GDR) in ${}^{208}$Pb. Based on the ``soft" EQMD model, the response and strength functions are self-consistently determined for various symmetry energy coefficient and in-medium reduction factor values. The results confirm that the peak position and GDR width in ${}^{208}$Pb are highly sensitive to …

Constraint satisfaction problems, compactness and non-measurable sets
Claude Tardif
https://arxiv.org/abs/2508.14838 https://arxiv.org/pdf/2508.14838

Constraint satisfaction problems, compactness and non-measurable sets
A finite relational structure A is called compact if for any infinite relational structure B of the same type, the existence of a homomorphism from B to A is equivalent to the existence of homomorphisms from all finite substructures of B to A. We show that if A has width one, then the compactness of A can be proved in the axiom system of Zermelo and Fraenkel, but otherwise, the compactness of A implies the existence of non-measurable sets in 3-space.

GDNSQ: Gradual Differentiable Noise Scale Quantization for Low-bit Neural Networks
Sergey Salishev, Ian Akhremchik
https://arxiv.org/abs/2508.14004 https://

GDNSQ: Gradual Differentiable Noise Scale Quantization for Low-bit Neural Networks
Quantized neural networks can be viewed as a chain of noisy channels, where rounding in each layer reduces capacity as bit-width shrinks; the floating-point (FP) checkpoint sets the maximum input rate. We track capacity dynamics as the average bit-width decreases and identify resulting quantization bottlenecks by casting fine-tuning as a smooth, constrained optimization problem. Our approach employs a fully differentiable Straight-Through Estimator (STE) with learnable bit-width, noise scale an…

Nature of High Equivalent Width Emitters in the Epoch of Reionization Revealed by JWST Medium-band Imaging
Kazuki Daikuhara, Takahiro Morishita, Tadayuki Kodama, Ranga-Ram Chary, Masayuki Akiyama, Jose. M. P\'erez-Mart\'inez
https://arxiv.org/abs/2507.13456

Nature of High Equivalent Width Emitters in the Epoch of Reionization Revealed by JWST Medium-band Imaging
Extreme emission line galaxies (EELGs) at high redshifts are considered key contributors to cosmic reionization at $z>6$ due to their higher ionization efficiencies. We have identified 119 H$β$ + [OIII] emitters at $z\sim7$ selected by a flux excess in the medium-band filter F410M in the public James Webb Space Telescope Cycle-1 fields. Our emitters exhibit a wide range in rest-frame H$β$ + [OIII] equivalent width (EWs), 420 $<$ EW$_{0}$/Å $<$ 6850 (with the median value of $\sim1700$ Å). A…

FPT Parameterisations of Fractional and Generalised Hypertree Width
Matthias Lanzinger, Igor Razgon, Daniel Unterberger
https://arxiv.org/abs/2507.11080 ht…

FPT Parameterisations of Fractional and Generalised Hypertree Width
We present the first fixed-parameter tractable (fpt) algorithms for precisely determining several central hypergraph decomposition parameters, including generalized hypertree width, fractional hypertree width, and adaptive width. Despite the recognized importance of these measures in complexity theory, databases, and constraint satisfaction, no exact fpt algorithms for any of them had previously been known. Our results are obtained for hypergraph classes of bounded rank and bounded degree. Ou…

Enhancement of J x B electron acceleration with the micro-structured target and picosecond high-contrast relativistic-intensity laser pulse
Ryunosuke Takizawa, Yuga Karaki, Hiroki Matsubara, Rinya Akematsu, Ryou Oomura, Law King Fai Farley, Hiroshi Azechi, Natsumi Iwata, Tomoyuki Johzaki, Yasuhiko Sentoku, Shinsuke Fujioka
https://

Enhancement of J x B electron acceleration with the micro-structured target and picosecond high-contrast relativistic-intensity laser pulse
Efficient generation of multi-hundred-keV electrons is essential for isochoric heating and can influence ion acceleration. We investigated electron acceleration from copper-oleate foil targets, either planar or coated with a gold mesh structure (bar width $5,μ\mathrm{m}$, spacing $7.5,μ\mathrm{m}$, thickness $\sim6,μ\mathrm{m}$), irradiated by $1.5$-ps, $350$-J LFEX laser pulses. Two laser-contrast conditions were examined: high ($\sim10^{10}$, with a plasma mirror) and low ($\sim10^{8}$, wi…

Review of the Higgs boson production via vector boson fusion and its decay into bottom quarks in $pp$ collisions at $\sqrt{s}=8,13$ TeV
Fikriye C I Kaya, Ibrahim Mirza
https://arxiv.org/abs/2507.22765 …

Review of the Higgs boson production via vector boson fusion and its decay into bottom quarks in $pp$ collisions at $\sqrt{s}=8,13$ TeV
We present a comprehensive overview of the vector boson fusion production and the following decay of the Higgs boson to two bottom quarks (\(H\!\to\! b\bar{b}\)), which dominates the Higgs total width yet remains experimentally challenging because of substantial QCD multijet backgrounds. We overview the use of boosted decision trees, which advance jet reconstruction and flavour tagging by including boosted topologies and deep-learning-based \(b\)-tagging and which improve sensitivity in associa…

I don’t suppose there are any good and complete iOS apps for fedi right?
I know there’s the #Feditext

Density of Traceable Graphs
Michal Dvo\v{r}\'ak, Du\v{s}an Knop, Michal Opler, Jan Pokorn\'y, Ond\v{r}ej Such\'y, Krisztina Szil\'agyi
https://arxiv.org/abs/2506.22269

Density of Traceable Graphs
We establish tight lower and upper bounds on the number of edges in traceable graphs in several classes of dense graphs. A graph is traceable if it has a Hamiltonian path. We show that the bound is: - quadratic for the class of graphs of bounded neighborhood diversity, bounded size of maximum induced matching or bounded cluster vertex deletion number; - n log n for the class of cographs or, more generaly, bounded modular-width, and for the class of bounded distance to cograph; and - sligthly su…

Effect of permeability heterogeneity on reactive convective dissolution
Rima Benhammadi, Anne De Wit, Juan J. Hidalgo
https://arxiv.org/abs/2507.20610 https://

Effect of permeability heterogeneity on reactive convective dissolution
The impact of permeability heterogeneity on reactive buoyancy-driven convective dissolution is analyzed numerically in the case of a bimolecular A+B$\to$C reaction across varying Rayleigh numbers. The convective dynamics is compared in homogeneous, horizontally stratified, vertically stratified, and log-normally distributed permeability fields. Key variables, such as the total amount of product, mixing length, front position and width, reaction and scalar dissipation rates, and dissolution flux…

Near-optimal estimates for the $\ell^p$-Lipschitz constants of deep random ReLU neural networks
Sjoerd Dirksen, Patrick Finke, Paul Geuchen, Dominik St\"oger, Felix Voigtlaender
https://arxiv.org/abs/2506.19695

Near-optimal estimates for the $\ell^p$-Lipschitz constants of deep random ReLU neural networks
This paper studies the $\ell^p$-Lipschitz constants of ReLU neural networks $Φ: \mathbb{R}^d \to \mathbb{R}$ with random parameters for $p \in [1,\infty]$. The distribution of the weights follows a variant of the He initialization and the biases are drawn from symmetric distributions. We derive high probability upper and lower bounds for wide networks that differ at most by a factor that is logarithmic in the network's width and linear in its depth. In the special case of shallow networks, we …

JADES reveals a large population of low mass black holes at high redshift
Sophia Geris, Roberto Maiolino, Yuki Isobe, Jan Scholtz, Francesco D'Eugenio, Xihan Ji, Ignas Juodzbalis, Charlotte Simmonds, Pratika Dayal, Alessandro Trinca, Raffaella Schneider, Santiago Arribas, Rachana Bhatawdekar, Andrew J. Bunker, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Emma Curtis-Lake, Benjamin D. Johnson, Eleonora Parlanti, Pierluigi Rinaldi, Brant Robertson, Sandro Tacchella, Hannah …

JADES reveals a large population of low mass black holes at high redshift
JWST has revealed a large population of active galactic nuclei (AGN) in the distant universe, which are challenging our understanding of early massive black hole seeding and growth. We expand the exploration of this population to lower luminosities by stacking $\sim 600$ NIRSpec grating spectra from the JWST Advanced Deep Extragalactic Survey (JADES) at $3

Super-capacitors interfaced with quantum dots at the electrolyte/electrode interface: capacitance gain and fluorescence line-width narrowing
H. Grebel
https://arxiv.org/abs/2507.16791

Super-capacitors interfaced with quantum dots at the electrolyte/electrode interface: capacitance gain and fluorescence line-width narrowing
In the past, we have observed an overall capacitance enhancement in super capacitors (S-C) when placing small amount of conductive colloids at the electrolyte/electrode interface with a mass ratio of 1:5000 to the electrode mass. The capacitance peaked at particular colloid concentration and the enhancement was attributed to local field effects by formation of an array of colloids at the interface. Here we show that fluorescing semiconductor quantum dots (QDs) at the interface exhibit similar e…

Ok, time to sleep bc I already should’ve gone like two hours ago. Please fedi still exist tomorrow

A unified multi-perspective quadratic manifold for mitigating the Kolmogorov barrier in multiphysics damage
Qinghua Zhang, Stephan Ritzert, Jian Zhang, Jannick Kehls, Stefanie Reese, Tim Brepols
https://arxiv.org/abs/2508.18220

A unified multi-perspective quadratic manifold for mitigating the Kolmogorov barrier in multiphysics damage
In multiphysics damage problems, material degradation is often modeled using local or global damage variables, whose evolution introduces strong nonlinearities and significant computational costs. Linear projection-based reduced-order models (ROMs) are widely used to accelerate these simulations but often fail to capture complex nonlinear damage evolution effectively. This limitation arises from the slow decay of the Kolmogorov n-width, which leads to a phenomenon known as the Kolmogorov barrie…

Replaced article(s) found for cs.LG. https://arxiv.org/list/cs.LG/new
[3/5]:
- Finite-Width Neural Tangent Kernels from Feynman Diagrams
Max Guillen, Philipp Misof, Jan E. Gerken

A comparative nanotribological investigation on amorphous and polycrystalline forms of MoS2
Hesam Khaksar, Prashant Mittal, Nabil Daghbouj, Grzegorz Cios, Tomas Polcar, Enrico Gnecco
https://arxiv.org/abs/2508.18923

A comparative nanotribological investigation on amorphous and polycrystalline forms of MoS2
The wear behavior of two amorphous and polycrystalline forms of MoS2 prepared by magnetron sputtering has been characterized in a combined nanoindentation and atomic force microscopy study. From the analysis of the depth and width of wear tracks estimated after scratching the surfaces with a Berkovich indenter and a loading force up to 2 mN, we conclude that both forms follow the Archard wear equation, and the wear resistance is about four times higher on the amorphous MoS2. Moreover, a compari…

Determination of $|V_{\rm cb}|$ using Bayesian analysis of the $B \rightarrow D^{*}\ell {\bar \nu}_\ell$ semileptonic decay width with four-loop QCD corrections
Wang Li, Xing-Gang Wu, Hua Zhou, Xu-Chang Zheng
https://arxiv.org/abs/2506.18026

Determination of $|V_{\rm cb}|$ using Bayesian analysis of the $B \rightarrow D^{*}\ell {\bar ν}_\ell$ semileptonic decay width with four-loop QCD corrections
The Cabibbo-Kobayashi-Maskawa matrix element $|V_{\rm cb}|$ is an important Standard Model parameter, whose value can be determined by using the semi-leptonic decay $B\rightarrow D^{*}\ell{\bar ν}_\ell$. The perturbative QCD (pQCD) corrections to the $B \to D^{*}$ transform form factor ${\cal F}(w)$ has been known up to the N$^3$LO level, whose magnitude remains sensitive to the choice of renormalization scale $μ_r$. To improve the precision of ${\cal F}(w)$ and hence $|V_{\rm …

Predicting interface and spin states in armchair graphene nanoribbon junctions
Sofia Sanz, Daniel S\'anchez-Portal
https://arxiv.org/abs/2507.14065 htt…

Predicting interface and spin states in armchair graphene nanoribbon junctions
We present a theoretical analysis of interface states emerging at junctions between armchair graphene nanoribbons of varying widths. By exploring diverse width combinations and junction geometries, we demonstrate that predicting the precise number of interface states requires considerations beyond the topological classification alone; specifically, the width differences and bonding configuration at the interface play crucial roles. For junctions involving ribbons with small gaps, we further exa…

In pursuit of the low-energy Solar neutron flux
Prithish Halder, Peter A. Dowben
https://arxiv.org/abs/2506.17985 https://arxiv.org/p…

In pursuit of the low-energy Solar neutron flux
Understanding the origin of low-energy solar neutrons flux is crucial for probing solar energetic processes and neutron transport mechanisms in interplanetary space. This study investigates the role of coronal mass ejections (CMEs) in modulating the low-energy solar neutrons. The neutron flux is modeled by incorporating a CME-width scaling factor into existing neutron fluence models. Our analysis, based on CME data from the SECHHI COR2 database during the DANSON experiment (2016-10-27 to 2017-0…

What I can’t be the only one who says “tee-teye”??

Replaced article(s) found for cs.LG. https://arxiv.org/list/cs.LG/new
[3/5]:
- Flexible Infinite-Width Graph Convolutional Neural Networks
Ben Anson, Edward Milsom, Laurence Aitchison

$\pi^0\rightarrow 2\gamma$ decay under strong magnetic fields in the NJL model
M\'aximo Coppola, Daniel Gomez Dumm, Norberto N. Scoccola
https://arxiv.org/abs/2507.13560

$π^0\rightarrow 2γ$ decay under strong magnetic fields in the NJL model
We study the anomalous $π^0 \to γγ$ decay under an external uniform magnetic field in the framework of a two-flavor Nambu-Jona-Lasinio model. It is seen that the full decay width gets strongly reduced with the external field, and that the differential width is almost independent of thedirection of the outgoing photons. We also find that the result for the total width can be very well approximated by a simple expression obtained at the lowest order in the chiral limit, which is just a direct …

I wanna make some cool hardware stuff but idk what to make aaaaaaa ;-;
Ideally it should be something useful or really really cool
I have two old Arduino Unos at home, but I’d be open about getting some pipicos or esp32 or something.
Extra points if it requires some soldering to put my iron to good use :3
(tho while ordering custom PCBs is cool (feel free to send cool stuff that use them), getting them shipped here is quite expensive I think)
Any recommendations?

Demo vor US-Botschaft in Kiew
Vor der US-amerikanischen Botschaft in Kiew sind vor dem Treffen zwischen Putin und Trump Demonstranten zusammengekommen. Auf Plakaten fordern sie etwa Putin nicht zu vertrauen und keine Entscheidungen über die Ukraine ohne die Ukraine zu treffen.
📷

meow

Gn fedi

Odd coloring graphs with linear neighborhood complexity
James Davies, Meike Hatzel, Kolja Knauer, Rose McCarty, Torsten Ueckerdt
https://arxiv.org/abs/2506.08926

Odd coloring graphs with linear neighborhood complexity
We prove that any class of bipartite graphs with linear neighborhood complexity has bounded odd chromatic number. As a result, if $\mathcal{G}$ is the class of all circle graphs, or if $\mathcal{G}$ is any class with bounded twin-width, bounded merge-width, or a forbidden vertex-minor, then $\mathcal{G}$ is $χ_{odd}$-bounded.

It’s so prettyyyy

Just need to wait for the USB-C power brick to arrive now