Tootfinder

C'aura mis le temps, mais c'est décidé : je ne vais plus rien payer en carte bancaire si je peux l'éviter. Objectif zéro euro dans la poche de Visa/Mastercard. Fuck USA
https://www.mediapart.fr/journal/fil…

Visé par des sanctions américaines, le juge français de la CPI dénonce des atteintes à l’Etat de droit
Visé depuis août par des sanctions américaines, le juge français de la Cour pénale internationale (CPI) Nicolas Guillou a témoigné vendredi des difficultés auxquelles il était confronté dans sa vie quotidienne et appelé les magistrats à « tenir » face aux atteintes que ces sanctions faisaient peser sur l’Etat de droit.

Global solutions in $L^{p}_{v}L^{\infty}_{x}$ for the Boltzmann equation in bounded domains
Dingqun Deng, Jong-in Kim, Donghyun Lee
https://arxiv.org/abs/2508.05985 https://

Global solutions in $L^{p}_{v}L^{\infty}_{x}$ for the Boltzmann equation in bounded domains
The existence theory for solutions to the Boltzmann equation in bounded domains has primarily been developed within uniformly bounded function classes, such as $L^{\infty}_{x,v}$, as in [Duan-Huang-Wang-Yang,2017], [Duan-Wang,2019], [Guo,2010]. In this paper, we investigate solutions in relaxed function spaces $L^{p}_{v}L^\infty_{x}$ for the initial-boundary value problem of the Boltzmann equation in bounded domains. We consider the case of hard potential under diffuse reflection boundary condi…

X-ray and radio polarimetry of the neutron star low mass X-ray binary GX 13 1
Unnati Kashyap, Thomas J. Maccarone, Eliot C. Pattie, Mason Ng, Swati Ravi, Herman L. Marshall
https://arxiv.org/abs/2508.05763

X-ray and radio polarimetry of the neutron star low mass X-ray binary GX 13+1
We report the X-ray and radio polarization study of the neutron star (NS) low-mass X-ray binary (LMXB) GX 13+1 using the Imaging X-ray Polarimetry Explorer (IXPE) and Very Large Array (VLA). Simultaneous Neutron Star Interior Composition Explorer (NICER) observations show that the source was in parts of the Z state during our IXPE observations, exhibiting moderate changes in the hardness intensity diagram. The source exhibits X-ray dips in the light curve along with hints of polarization swings…

Lotz-Peck-Porta and Rosenthal's theorems for spaces $C_p(X)$
Jerzy K\k{a}kol, Ond\v{r}ej Kurka, Wies{\l}aw \'Sliwa
https://arxiv.org/abs/2509.08634 https://

Lotz-Peck-Porta and Rosenthal's theorems for spaces $C_p(X)$
For a Tychonoff space $X$ by $C_p(X)$ we denote the space $C(X)$ of continuous real valued functions on $X$ endowed with the pointwise topology. We prove that an infinite compact space $X$ is scattered if and only if every closed infinite-dimensional subspace in $C_p(X)$ contains a copy of $c_0$ (with the pointwise topology) which is complemented in the whole space $C_p(X)$. This provides a $C_p$-version of the theorem of Lotz, Peck and Porta for Banach spaces $C(X)$ and $c_0$. Applications wil…

Le trafic est Perturbé entre Cergy le Haut et Paris Saint-Lazare dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : incident affectant la voie Š Sartrouville .
🤖 11/09 08:29

Decentralized Stochastic Nonconvex Optimization under the Relaxed Smoothness
Luo Luo, Xue Cui, Tingkai Jia, Cheng Chen
https://arxiv.org/abs/2509.08726 https://

Decentralized Stochastic Nonconvex Optimization under the Relaxed Smoothness
This paper studies decentralized optimization problem $f(\mathbf{x})=\frac{1}{m}\sum_{i=1}^m f_i(\mathbf{x})$, where each local function has the form of $f_i(\mathbf{x}) = {\mathbb E}\left[F(\mathbf{x};ξ_i)\right]$ which is $(L_0,L_1)$-smooth but possibly nonconvex and the random variable $ξ_i$ follows distribution ${\mathcal D}_i$. We propose a novel algorithm called decentralized normalized stochastic gradient descent (DNSGD), which can achieve the $ε$-stationary point on each local agent.…

Constraints on inelastic dark matter from the CDEX-1B experiment
Y. F. Liang, L. T. Yang, Q. Yue, K. J. Kang, Y. J. Li, H. P. An, Greeshma C., J. P. Chang, H. Chen, Y. H. Chen, J. P. Cheng, J. Y. Cui, W. H. Dai, Z. Deng, Y. X. Dong, C. H. Fang, H. Gong, Q. J. Guo, T. Guo, X. Y. Guo, L. He, J. R. He, H. X. Huang, T. C. Huang, S. Karmakar, Y. S. Lan, H. B. Li, H. Y. Li, J. M. Li, J. Li, M. C. Li, Q. Y. Li, R. M. J. Li, X. Q. Li, Y. L. Li, B. Liao, F. K. Lin, S. T. Lin, J. X. Liu, R. Z. L…

Constraints on inelastic dark matter from the CDEX-1B experiment
We present limits on spin-independent inelastic WIMP-nucleus scattering using the 737.1 kg $\cdot$ day dataset from the CDEX-1B experiment. Expected nuclear recoil spectra for various inelastic WIMP masses $m_χ$ and mass splittings $δ$ are calculated under the standard halo model. An accurate background model of CDEX-1B is constructed by simulating all major background sources. The model parameters are then determined through maximum likelihood estimation and Markov Chain Monte Carlo fitting.…

The WISSH quasar project. XII. X-ray view of the most luminous quasi-stellar objects at Cosmic Noon
C. Degli Agosti, C. Vignali, E. Piconcelli, L. Zappacosta, E. Bertola, R. Middei, I. Saccheo, G. Vietri, F. Vito, A. Bongiorno, M. Bischetti, G. Bruni, S. Carniani, G. Cresci, C. Feruglio, F. Salvestrini, A. Travascio, M. Gaspari, E. Glikman, E. Kammoun, G. Lanzuisi, M. Laurenti, G. Miniutti, C. Pinto, V. Testa, F. Tombesi, A. Tortosa, F. Fiore

The WISSH quasar project. XII. X-ray view of the most luminous quasi-stellar objects at Cosmic Noon
To improve our knowledge of nuclear emission in luminous QSOs at Cosmic Noon, we studied the X-ray emission of the WISE/SDSS-selected hyper-luminous (WISSH) QSO sample: 85 broad-line AGN with $L_{bol}>few\times 10^{47}\,erg\,s^{-1}$ at $z\sim 2-4$. Our aim is to characterise their X-ray spectra and explore relations between X-ray luminosity and other bands, comparing powerful QSOs with the general AGN population. We performed spectral analysis for about half of the sample; 16 sources were analy…

An $L^\infty$ Rashevskii-Chow Theorem
Ermal Feleqi, Rohit Gupta, Franco Rampazzo
https://arxiv.org/abs/2509.07572 https://arxiv.org/pdf/2509.07572

An $L^\infty$ Rashevskii-Chow Theorem
Consider a finite family $\{f_1,\dots,f_ν\}$ of $C^\infty$ vector fields on a $n$-dimensional ($n\in\mathbb{N}$), smooth manifold $\mathcal{M}$. The celebrated Rashevskii-Chow theorem states that, provided the vector fields $\{f_1,\dots,f_ν\}$, together with their iterated Lie brackets, span the whole tangent space at some $x_*\in\mathcal{M}$, then any $x$ in a neighborhood of $x_*$ can be connected to $x_*$ by means of a finite concatenation of integral curves of $\{\pm f_1,\dots,\pm f_ν\}$…

Invariants from involutory Hopf algebras of 3-manifolds with embedded framed links
Nicolas Bridges, Shawn X. Cui
https://arxiv.org/abs/2509.07125 https://a…

Invariants from involutory Hopf algebras of 3-manifolds with embedded framed links
We give invariants of pairs $(M,L)$ consisting of a closed connected oriented three-manifold and an (oriented) framed link $L$ embedded in $M$. This invariant generalizes the Kuperberg and Hennings-Kauffman-Radford (HKR) invariants of three-manifolds. We define Heegaard-Link diagrams which represent the pair $(M,L)$ and use the data of an involutory Hopf algebra and a representation of the Drinfeld double to construct the invariant. We show that if $L$ is the empty link, then the invariant reco…

Efficient Defection: Overage-Proportional Rationing Attains the Cooperative Frontier
Florian Lengyel
https://arxiv.org/abs/2509.07145 https://arxiv.org/pdf…

Efficient Defection: Overage-Proportional Rationing Attains the Cooperative Frontier
We study a noncooperative $n$-player game of slack allocation in which each player $j$ has entitlement $L_j>0$ and chooses a claim $C_j\ge0$. Let $v_j=(C_j-L_j)_+$ (overage) and $s_j=(L_j-C_j)_+$ (slack); set $X=\sum_j v_j$ and $I=\sum_j s_j$. At the end of the period an overage-proportional clearing rule allocates cooperative surplus $I$ to defectors in proportion to $v_j$; cooperators receive $C_j$. We show: (i) the selfish outcome reproduces the cooperative payoff vector $(L_1,\dots,L_n)$; (…

A Note on the failure of temporal regularity for stochastic PDEs
Antonio Agresti, Mark Veraar
https://arxiv.org/abs/2509.07803 https://arxiv.org/pdf/2509.0…

A Note on the failure of temporal regularity for stochastic PDEs
We consider solutions to linear parabolic SPDEs of the form \[ \mathrm{d} u(t) + A u(t)\, \mathrm{d} t = g(t)\, \mathrm{d} β, \qquad u(0)=0, \] where $A$ is a positive, invertible, and self-adjoint operator on a Hilbert space $X$, $β$ is a one-dimensional Brownian motion, and $g(t)\equiv x\in X$. We show that, for all $α\in [0,\frac{1}{2}),$ \[ u\in L^2(Ω;W^{α,2}(0,T;\mathsf{D}(A^{1/2}))) \quad \text{ if and only if }\quad x\in \mathsf{D}(A^α). \] In particular, there is a lack of persist…

Camarades, je viens de publier un article sur la "communication en groupe pour l'activisme" :
https://blogs.mediapart.fr/xcli/blog/090925/communiquer-en-groupe-pour-lactivisime
À mettre dans tous les poings levés 💗 ✊
V…

Communiquer en groupe pour l'activisime
Dans ce billet, nous allons discuter de bonnes pratiques pour la communication sécurisée lors de la préparation et de réalisation d'actions militantes. En particulier, nous verrons pourquoi Signal, Whatsapp ou Telegram ne sont pas recommandés avant et pendant les actions militantes. Des solutions alternatives plus sûres seront proposées.

Le trafic est perturbé entre Cergy le Haut et Paris Saint-Lazare dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : incendie aux abords de la voie (dégagement de fumée dans le secteur de Conflans Fin d'Oise).
🤖 10/10 07:05

Probing accretion and stellar properties in the Orion Nebula with VLT/X-Shooter
L. Piscarreta, G. Beccari, R. A. B. Claes, C. F. Manara, H. M. J. Boffin, T. Jerabkova, B. Ercolano, A. Natta, S. E. van Terwisga
https://arxiv.org/abs/2509.08784

Probing accretion and stellar properties in the Orion Nebula with VLT/X-Shooter
Multiple photometric studies have reported the presence of seemingly older accreting pre-main sequence stars (PMS) in optical colour-magnitude diagrams (CMDs). We investigate this phenomenon in the Orion Nebula, which harbors a subset of stars that show infrared excess detected by Spitzer and Halpha excess emission, yet display significantly older isochronal ages (>10 Myr) compared to the bulk population (~1-3 Myr) in the r, (r-i) CMD. We perform a detailed spectroscopic analysis of 40 Orion Ne…

What's the Buzz About GX 13 1? Constraining Coronal Geometry with QUEEN-BEE: A Bayesian Nested Sampling Framework for X-ray Polarization Rotation Analysis
Swati Ravi, Mason Ng, Herman L. Marshall, Andrea Gnarini
https://arxiv.org/abs/2509.07059

What's the Buzz About GX 13+1? Constraining Coronal Geometry with QUEEN-BEE: A Bayesian Nested Sampling Framework for X-ray Polarization Rotation Analysis
Observations from the Imaging X-ray Polarimetry Explorer (IXPE) have revealed electric vector position angle (EVPA) rotation in several neutron star low-mass X-ray binaries, including the galactic X-ray burster GX 13+1. We developed a novel Bayesian nested sampling framework-"Q-U Event-by-Event Nested sampling for Bayesian EVPA Evolution" (QUEEN-BEE)-to model unbinned Stokes parameters and infer optimal EVPA rotation rates in IXPE data. We then applied this framework to three previous IXPE obse…

Sharp non-existence threshold for a parabolic Hardy-H{\'e}non equation with quasilinear diffusion
Razvan Gabriel Iagar (LAMA), Philippe Lauren\c{c}ot (LAMA)
https://arxiv.org/abs/2508.06164

Sharp non-existence threshold for a parabolic Hardy-H{é}non equation with quasilinear diffusion
Optimal conditions for initial data leading to non-existence of non-negative solutions to the Cauchy problem for the parabolic Hardy-H{é}non equation $$ \partial\_tu=Δu^m+|x|^σu^p, \quad (t,x)\in(0,\infty)\times\mathbb{R}^N, $$ with $m>0$, $σ>0$ and $p>\max\{1,m\}$, are identified. Assuming that the initial condition satisfies $$ u\_0\in L^{\infty}(\mathbb{R}^N), \quad \lim\limits\_{|x|\to\infty}|x|^γu\_0(x)=L\in(0,\infty), \quad u\_0\geq0, $$ it is shown that…

Le trafic est interrompu entre Paris Saint-Lazare et La Défense dans les 2 sens jusqu'Š 11h30.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : Incident affectant la voie dans le secteur de la gare d'Asnières sur Seine.
🤖 11/08 10:48

Reconstructing Critical Current Density in Josephson Junctions with Phase Non-linearity
A. Kudriashov, R. A. Hovhannisyan, X. Zhou, L. Elesin, L. V. Yashina, K. S. Novoselov, D. A. Bandurin
https://arxiv.org/abs/2508.06007

Reconstructing Critical Current Density in Josephson Junctions with Phase Non-linearity
In this Letter, we show that the standard Dynes-Fulton analysis, commonly used to reconstruct the critical current density from interference patterns, breaks down in Josephson junctions with nonlinear phase distributions, leading to non-physical artifacts. To address this, we developed a simple iterative reconstruction algorithm and validated it both numerically and experimentally using a planar Josephson junction model. Unlike conventional approaches based on the logarithmic Hilbert transform,…

La circulation est momentanément arrêtée entre Avenue Henri Martin et Pont de l'Alma dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X du RER C.
Motif : panne d'un train LOLA dans le secteur de Pont de l'Alma.
🤖 08/11 16:20

Concentration and non-concentration of eigenfunctions of second-order elliptic operators with a divergence form in layered media
Matania Ben-Artzi (HUJ), Yves Dermenjian (I2M)
https://arxiv.org/abs/2509.06352

Concentration and non-concentration of eigenfunctions of second-order elliptic operators with a divergence form in layered media
Let $Ω$ ' $\subset$ R^d , d = 1, 2, . . . be an open bounded smooth domain, and $Ω= Ω'\times (0,H)\subset \mathbb{R}^d \times \mathbb\_+.$ The coordinates in $Ω$ are designated as x = (x ' , y) $\in$ $Ω$ ' x (0, H). The paper deals with the concentration (and non-concentration) properties (in sectors of $Ω$) of the eigenfunctions of the self-adjoint second-order elliptic operator $A = -\nabla\cdot\tilde{c}\nabla$ in $L^2(Ω,dx)$ with domain $D(A) = \{v\in H\_0^1(Ω); \tilde{c}\nabla v…

Nesterov acceleration for strongly convex-strongly concave bilinear saddle point problems: discrete and continuous-time approaches
Xin He, Ya-Ping Fang
https://arxiv.org/abs/2509.08258

Nesterov acceleration for strongly convex-strongly concave bilinear saddle point problems: discrete and continuous-time approaches
In this paper, we study a bilinear saddle point problem of the form $\min_{x}\max_{y} F(x) + \langle Ax, y \rangle - G(y)$, where $F$ and $G$ are $μ_F$- and $μ_G$-strongly convex functions, respectively. By incorporating Nesterov acceleration for strongly convex optimization, we first propose an optimal first-order discrete primal-dual gradient algorithm. We show that it achieves the optimal convergence rate $\mathcal{O}\left(\left(1 - \min\left\{\sqrt{\frac{μ_F}{L_F}}, \sqrt{\frac{μ_G}{L_G…

Le trafic est perturbé sur l'ensemble de la ligne.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne U.
Motif : panne d'un train en gare de La Verrière.
🤖 10/11 07:44

bücher 7–9/2025 #2025reads #RandomBookClub

A D/H Ratio Consistent with Earth's Water in Halley-type Comet 12P from ALMA HDO Mapping
M. A. Cordiner, E. L. Gibb, Z. Kisiel, N. X. Roth, N. Biver, D. Bockel\'ee-Morvan, J. Boissier, B. P. Bonev, S. B. Charnley, I. M. Coulson, J. Crovisier, M. N. Drozdovskaya, K. Furuya, M. Jin, Y. -J. Kuan, M. Lippi, D. C. Lis, S. N. Milam, C. Opitom, C. Qi, A. J. Remijan

A D/H Ratio Consistent with Earth's Water in Halley-type Comet 12P from ALMA HDO Mapping
Isotopic measurements of Solar System bodies provide a primary paradigm within which to understand the origins and histories of planetary materials. The D/H ratio in particular, helps reveal the relationship between (and heritage of) different H$_2$O reservoirs within the Solar System. Here we present interferometric maps of water (H$_2$O) and semiheavy water (HDO) in the gas-phase coma of a comet (Halley-type comet 12P/Pons-Brooks), obtained using the Atacama Large Millimeter/submillimeter Arr…

A weak type $(p,a)$ criterion for operators, and applications
Bernhard Haak, El-Maati Ouhabaz
https://arxiv.org/abs/2509.08334 https://arxiv.org/pdf/2509.0…

A weak type $(p,a)$ criterion for operators, and applications
Let $(X, d, μ)$ be a space of homogeneous type and $Ω$ an open subset of $X$. Given a bounded operator $T: L^p(Ω) \to L^q(Ω)$ for some $1 \le p \le q < \infty$, we give a criterion for $T$ to be of weak type $(p_0, a)$ for $p_0$ and $a$ such that $\frac{1}{p_0} - \frac{1}{a} = \frac{1}{p}-\frac{1}{q}$. These results are illustrated by several applications including estimates of weak type $(p_0, a)$ for Riesz potentials $L^{-\fracα{2}}$ or for Riesz transform type operators $\nabla Δ^{-\fr…

Interlayer Coupling and Exciton Dynamics in 2D Hybrid Structures based on an InGaN Quantum Well coupled to a MoSe2 Monolayer
D. Chen, D. Lagarde, L. Hemmen, L. Lombez, P. Renucci, M. Mauguet, L. Ren, C. Robert, N. Grandjean, X. Marie
https://arxiv.org/abs/2509.06547

Interlayer Coupling and Exciton Dynamics in 2D Hybrid Structures based on an InGaN Quantum Well coupled to a MoSe2 Monolayer
Hybrid structures incorpora1ng both III-nitride and Transi1on Metal Dichalcogenide (TMD) semiconductors have strong applica1on poten1al for light harves1ng and optoelectronics. Here we have inves1gated the proper1es of hybrid structures based on a MoSe2 monolayer coupled to an InGaN quantum well (QW). The coupling efficiency is controlled by a thin GaN barrier of variable thickness located between them. Time-integrated and 1me-resolved micro-photoluminescence experiments show a quenching of the…

C'est vraiment complètement une idée de merde d'utiliser des groupes Signal pour de l'activisme (au hasard le 10 septembre) : tu dois rejoindre le groupe avec ton profil habituel, et du coup, tu révèles :
1) ton nom et ta photo de profil Š l'ensemble des membres du groupe (bonjour le fichage)
ou 2) tu changes ton nom et ta photo avant de rejoindre et tous tes contacts sont "bah ? T'as retiré ta photo ? J'ai galéré Š te retrouver dans ma liste. Pourquoi …

Sharp Non-uniqueness in Law for Stochastic Differential Equations on the Whole Space
Huaxiang L\"u, Michael R\"ockner
https://arxiv.org/abs/2510.08248 https://

Sharp Non-uniqueness in Law for Stochastic Differential Equations on the Whole Space
In this paper, we investigate the stochastic differential equation on $\mathbb{R}^d,d\geq2$: \begin{align*} \dif X_t&=v(t,X_t)\dif t+\sqrt{2} \dif W_t. \end{align*} For any finite collection of initial probability measures $\{μ^i_0\}_{1\leq i\leq M}$ on $\mathbb{R}^d$ and $\frac{d}{p}+\frac{1}{r}>1$, we construct a divergence-free drift field $v\in L_t^rL^p\cap C_tL^{d-}$ such that the associated SDE admits at least two distinct weak solutions originating from each initial measure $μ^i_0$. …

Trigonal distortion in the Kitaev candidate honeycomb magnet BaCo2(AsO4)2
M. M. Ferreira-Carvalho, S. R\"o{\ss}ler, C. F. Chang, Z. Hu, S. M. Valvidares, P. Gargiani, M. W. Haverkort, Prashanta K. Mukharjee, P. Gegenwart, A. A. Tsirlin, L. H. Tjeng
https://arxiv.org/abs/2509.06746

Trigonal distortion in the Kitaev candidate honeycomb magnet BaCo2(AsO4)2
We conducted x-ray absorption (XAS) and magnetic circular dichroism (XMCD) measurements at the Co $L_{2,3}$ edges on single crystals of the Kitaev candidate honeycomb lattice compound BaCo$_2$(AsO$_4$)$_2$. The measurements employed the inverse partial fluorescence yield technique, which is ideal for acquiring reliable x-ray absorption spectra from highly insulating samples, enabling precise quantitative analysis. Our experimental results revealed a significant linear dichroic signal, indicatin…

Crosslisted article(s) found for math.GN. https://arxiv.org/list/math.GN/new
[1/1]:
- Lotz-Peck-Porta and Rosenthal's theorems for spaces $C_p(X)$
Jerzy K\k{a}kol, Ond\v{r}ej Kurka, Wies{\l}aw \'Sliwa

Time-Dependent Modeling of the Sub-Hour Spectral Evolution During the 2013 Outburst of Mrk 421
MAGIC Collaboration, K. Abe, S. Abe, J. Abhir, A. Abhishek, A. Aguasca-Cabot, I. Agudo, T. Aniello, S. Ansoldi, L. A. Antonelli, A. Arbet Engels, C. Arcaro, T. T. H. Arnesen, A. Babi\'c, C. Bakshi, U. Barres de Almeida, J. A. Barrio, L. Barrios-Jim\'enez, I. Batkovi\'c, J. Baxter, J. Becerra Gonz\'alez, W. Bednarek, E. Bernardini, J. Bernete, A. Berti, C. Bigongiari, A. Biland…

Time-Dependent Modeling of the Sub-Hour Spectral Evolution During the 2013 Outburst of Mrk 421
In April 2013, the TeV blazar Markarian~421 underwent one of its most powerful emission outbursts to date. An extensive multi-instrument campaign featuring MAGIC, VERITAS, and \textit{NuSTAR} provided comprehensive very-high-energy (VHE; $E > 100$\,GeV) and X-ray coverage over nine consecutive days. In this work, we perform a detailed spectral analysis of the X-ray and VHE emissions on sub-hour timescales throughout the flare. We identify several clockwise spectral hysteresis loops in the X-ray…

Replaced article(s) found for astro-ph.SR. https://arxiv.org/list/astro-ph.SR/new
[1/1]:
- Reconsidering The Bailey Diagrams of ab-type RR Lyrae Stars, Metallicity-Mediated Evolution as th...
L. -J. Li, S. -B. Qian, L. -Y. Zhu, X. -D. Shi, W. -P. Liao

Unified Dark Matter and Dark Energy in a model of Non-Canonical Scalar-Tensor Theory
Nihal Jalal Pullisseri, Sanil Unnikrishnan
https://arxiv.org/abs/2510.07103 https://

Unified Dark Matter and Dark Energy in a model of Non-Canonical Scalar-Tensor Theory
We consider a model of non-canonical scalar-tensor theory in which the kinetic term in the Brans-Dicke action is replaced by a non-canonical scalar field Lagrangian $\mathcal{L}(X, ϕ)= λX^αϕ^β- V(ϕ)$ where $X = (1/2) \partial_μ ϕ\partial^μ ϕ$ and $α$, $β$ and $λ$ are parameters of the model. This can be considered as a simple non-canonical generalization of the Brans-Dicke theory with a potential term which corresponds to a special case of this model with the values of the paramete…

Advancing Material Modeling in Hydrocodes Beyond Equations of State
Tim A. Linke, Dane M. Sterbentz, Jean-Pierre R. Delplanque, Sebastien Hamel, Kevin A. Korner, Philip C. Myint, Lorin X. Benedict, Jonathan L. Belof
https://arxiv.org/abs/2508.06012

Advancing Material Modeling in Hydrocodes Beyond Equations of State
We present a multiscale simulation framework that couples the Finite Element Method with molecular dynamics. Bypassing traditional equations of state (EOS) by using in-line atomistic simulations, the method offers the advantage of incorporating detailed microscale physics not easily represented with coarse-grained models. Coupling consistency with the continuum code is ensured through the use of lifting and restriction operators, in line with heterogeneous multiscale methods. The concurrent con…

An Inertial Langevin Algorithm
Alexander Falk, Andreas Habring, Christoph Griesbacher, Thomas Pock
https://arxiv.org/abs/2510.06723 https://arxiv.org/pdf/2…

An Inertial Langevin Algorithm
We present a novel method for drawing samples from Gibbs distributions with densities of the form $π(x) \propto \exp(-U(x))$. The method accelerates the unadjusted Langevin algorithm by introducing an inertia term similar to Polyak's heavy ball method, together with a corresponding noise rescaling. Interpreting the scheme as a discretization of \emph{kinetic} Langevin dynamics, we prove ergodicity (in continuous and discrete time) for twice continuously differentiable, strongly convex, and $L$…

The role of communication in effective business management
Dariusz Baran, Ernest G\'orka, Micha{\l} \'Cwi\k{a}ka{\l}a, Gabriela Wojak, Mateusz Grzelak, Katarzyna Olszy\'nska, Piotr Mrzyg{\l}\'od, Maciej Frasunkiewicz, Piotr R\k{e}czajski, Maciej \'Slusarczyk, Jan Piwnik
https://arxiv.org/abs/2510.07016

The role of communication in effective business management
This paper examines the impact of internal communication on effective business management through a comparative analysis of two medium-sized car rental companies operating in Poland. Using a structured survey completed by 220 employees, the study evaluates 15 communication-related factors, including feedback culture, managerial accessibility, message clarity, and interdepartmental coordination. The findings indicate that Company X significantly outperforms Company Y across all evaluated dimensi…

Non-uniqueness of the steady state for run-and-tumble particles with a double-well interaction potential
L\'eo Touzo, Pierre Le Doussal
https://arxiv.org/abs/2510.07212 http…

Non-uniqueness of the steady state for run-and-tumble particles with a double-well interaction potential
We study $N$ run-and-tumble particles (RTPs) in one dimension interacting via a double-well potential $W(r)=-k_0 \, r^2/2+g \, r^4/4$, which is repulsive at short interparticle distance $r$ and attractive at large distance. At large time, the system forms a bound state where the density of particles has a finite support. We focus on the determination of the total density of particles in the stationary state $ρ_s(x)$, in the limit $N\to+\infty$. We obtain an explicit expression for $ρ_s(x)$ as…

In-flight performance of the IXPE telescopes
Riccardo Ferrazzoli, Enrico Costa, Sergio Fabiani, Philip Kaaret, Stephen L. O'Dell, Brian D. Ramsey, Paolo Soffitta, Luca Baldini, Ronaldo Bellazzini, Alessandro Di Marco, Fabio La Monaca, Luca Latronico, Alberto Manfreda, Fabio Muleri, John Rankin, Carmelo Sgr\`o, Stefano Silvestri, Martin C. Weisskopf
https://…

In-flight performance of the IXPE telescopes
We present a comprehensive characterization of the on-orbit imaging performance of the three telescopes on board the Imaging X-ray Polarimetry Explorer (IXPE). Each telescope comprises a Wolter-I mirror module assembly and a Gas Pixel Detector focal-plane detector unit (DU). We analyze data from point-like X-ray sources and fit a composite point spread function (PSF) model that we compare with ground calibrations. We study the dependence of the PSF parameters and of the angular resolution, in t…

Unlocking 21cm Cosmology with SBI: A Beginner friendly NRE for Inference of Astrophysical Parameters
Bisweswar Sen, Abhirup Datta
https://arxiv.org/abs/2509.06834 https://

Unlocking 21cm Cosmology with SBI: A Beginner friendly NRE for Inference of Astrophysical Parameters
The 21-cm line of neutral hydrogen is a promising probe of the early Universe, yet extracting astrophysical parameters from its power spectrum remains a major challenge. We present a beginner-friendly PyTorch pipeline for Marginal Neural Ratio Estimation (MNRE), a Simulation-Based Inference (SBI) method that bypasses explicit likelihoods. Using 21cmFAST simulations, we show that MNRE can recover key astrophysical parameters such as the ionizing efficiency $ζ$ and X-ray luminosity $L_X$ directl…

Tracking Electron, Proton, and Solvent Motion in Proton-Coupled Electron Transfer with Ultrafast X-rays
Abdullah Kahraman, Michael Sachs, Soumen Ghosh, Benjamin I. Poulter, Estefan\'ia Sucre-Rosales, Elizabeth S. Ryland, Douglas Garratt, Sumana L. Raj, Natalia Powers-Riggs, Subhradip Kundu, Christina Y. Hampton, David J. Hoffman, Giacomo Coslovich, Georgi L. Dakovski, Patrick L. Kramer, Matthieu Chollet, Roberto A. Mori, Tim B. van Driel, Sang-Jun Lee, Kristjan Kunnus, Amy A. Cordo…

Tracking Electron, Proton, and Solvent Motion in Proton-Coupled Electron Transfer with Ultrafast X-rays
Proton-coupled electron transfer (PCET) is foundational to catalysis, bioenergetics, and energy conversion, yet capturing and disentangling the coupled motions of electrons, protons, and solvent has remained a major experimental challenge. We combine femtosecond optical spectroscopy, site-specific ultrafast soft X-ray absorption spectroscopy, and time-resolved X-ray scattering with advanced calculations to disentangle the elementary steps of PCET in solution. Using a ruthenium polypyridyl model…

Triple convolution sums of the generalised divisor functions
Bikram Misra, Biswajyoti Saha
https://arxiv.org/abs/2509.04610 https://arxiv.org/pdf/2509.0461…

Triple convolution sums of the generalised divisor functions
We study the triple convolution sum of the generalised divisor functions given by $$\sum_{n\leq x} d_k(n+h)d_l(n)d_m(n-h),$$ where $h \le x^{1-ε}$ for any $ε>0$ and $d_k(n)$ denotes the generalised divisor function which counts the number of ways $n$ can be written as product of $k$ many positive integers. The purpose of this paper is two-fold. Firstly, we note a predicted asymptotic estimate for the above sum, where the constant appearing in the estimate can be obtained from the theory of Di…

$L^p$ Hardy inequalities with homogeneous weights
Subhajit Roy
https://arxiv.org/abs/2509.05674 https://arxiv.org/pdf/2509.05674

$L^p$ Hardy inequalities with homogeneous weights
For $p\in (1,\infty)$ and $α\in\mathbb{R}$, we consider measurable functions $g$ on $\mathbb{S}^{N-1}$ that satisfy the following weighted Hardy inequality: \begin{equation}\label{abs} \int_{\mathbb{R}^N}\frac{ g (x/|x|)}{|x|^{p+α}}|u(x)|^p dx \leq C\int_{\mathbb{R}^N}\frac{|\nabla u(x)|^p}{|x|^α} dx, \quad\forall\,u\in \mathcal{C}_c^\infty(\mathbb{R}^N), \end{equation} for some constant $C>0$. Depending on $N$, $p$, and $α$, we identify s…

A reassessment of the role of high $x$ data on the MSHT global PDF fit
L. A. Harland-Lang, T. Cridge, M. Reader, R. S. Thorne
https://arxiv.org/abs/2510.03753 https://

A reassessment of the role of high $x$ data on the MSHT global PDF fit
We present updates within the MSHT global PDF fit that focus on the high $x$ region, and on improving our understanding of the interplay of various theoretical contributions and experimental constraints here. We revisit the question of target mass and higher twist corrections, considering their impact for the first time at approximate N$^3$LO order in a global PDF analysis. Their inclusion is found to be moderate but not negligible on both the PDFs and preferred value of the strong coupling. In…

🇺🇦 #NowPlaying on #BBC6Music's #LaurenLaverne
Leftfield:
🎵 Phat Planet
#Leftfield
https://tomshanxx.bandcamp.com/track/leftfield-phat-planet-x-eminem-lose-yourself
https://open.spotify.com/track/3cR4v4R9tl8vZkOAgqiMQh

Phase-field and lip-field approaches for fracture with extreme mesh deformation (X-Mesh): a one-dimensional study
Nicolas Mo\"es, Beno\^it L\'e, Nicolas Chevaugeon, Jean-Fran\c{c}ois Remacle
https://arxiv.org/abs/2509.04971

Phase-field and lip-field approaches for fracture with extreme mesh deformation (X-Mesh): a one-dimensional study
We consider a one-dimensional fracture problem modelled using either the phase-field or lip-field approach. In both cases, we optimise the incremental potential with respect to the displacement and damage fields and the nodal coordinates of the mesh. This is thus a variational mesh study. We observe that, as the damage reaches its maximum value, the optimisation drives the most damaged element to zero size as the damage reaches its maximum value. This peculiar element provides a precise displac…

Brilliant source of 19.2 attosecond soft X-ray pulses below the atomic unit of time
Fernando Ardana-Lamas, Seth L. Cousin, Juliette Lignieres, Jens Biegert
https://arxiv.org/abs/2510.04086

Brilliant source of 19.2 attosecond soft X-ray pulses below the atomic unit of time
Electronic correlations occur on attosecond timescales, dictating how chemical bonds form, energy flows, and materials respond to light. Capturing such many-body processes requires light pulses of similar duration. The soft X-ray water window is vital because it encompasses the principle absorption edges of carbon, nitrogen, and oxygen that underpin chemistry, biology, and materials science. However, generating and characterising isolated attosecond pulses that reach into the soft X-ray water w…

Orbital Ordering in the Charge Density Wave Phases of BaNi$_2$(As$_{1-x}$P$_x$)$_2$
Tom Lacmann, Robert Eder, Igor Vinograd, Michael Merz, Mehdi Frachet, Philippa Helen McGuinness, Kurt Kummer, Enrico Schierle, Amir-Abbas Haghighirad, Sofia-Michaela Souliou, Matthieu Le Tacon
https://arxiv.org/abs/2509.05200

Orbital Ordering in the Charge Density Wave Phases of BaNi$_2$(As$_{1-x}$P$_x$)$_2$
We use resonant X-ray scattering at the nickel L$_{2,3}$ edges to investigate the interplay between orbital degrees of freedom and charge density waves (CDW) in the superconductor BaNi$_2$(As$_{1-x}$P$_x$)$_2$. Both the incommensurate and commensurate CDWs in this system exhibit strong resonant enhancement with distinct energy and polarization dependencies, indicative of orbital ordering. Azimuthal-angle-dependent measurements reveal a lowering of the local Ni site symmetry, consistent with mon…

Prediscovery Activity of New Interstellar Object 3I/ATLAS: A Dynamically-Old Comet?
Quanzhi Ye, Michael S. P. Kelley, Henry H. Hsieh, Eric C. Bellm, Tracy X. Chen, Richard Dekany, Andrew Drake, Steven L. Groom, George Helou, Shrinivas R. Kulkarni, Thomas A. Prince, Reed Riddle
https://arxiv.org/abs/2509.08792…

Prediscovery Activity of New Interstellar Object 3I/ATLAS: A Dynamically-Old Comet?
We report on the prediscovery observations and constraints of the new interstellar comet 3I/2025 N1 (ATLAS), made by the Zwicky Transient Facility (ZTF), for the inbound leg of the comet out to a heliocentric distance of $r_\mathrm{h}=17$ au, or approximately a year before its discovery. We find that 3I/ATLAS has been active inward of a heliocentric distance of at least $r_\mathrm{h}=6.5$ au. The comet followed a brightening rate of $\propto r_\mathrm{h}^{-3.8}$, which is significantly steeper …

X-ray investigation of possible super-Eddington accretion in a radio-loud quasar at $z=6.13$
L. Ighina, A. Caccianiga, T. Connor, A. Moretti, F. Pacucci, C. Reynolds, J. Afonso, B. Arsioli, S. Belladitta, J. W. Broderick, D. Dallacasa, R. Della Ceca, F. Haardt, E. Lambrides, James K. Leung, A. Lupi, I. Matute, F. RIgamonti, P. Severgnini, N. Seymour, F. Tavecchio, C. Vignali

X-ray investigation of possible super-Eddington accretion in a radio-loud quasar at $z=6.13$
We present radio and X-ray observations of the recently discovered $z=6.13$ radio-powerful quasar RACS J032021.44$-$352104.1 using uGMRT, ATCA, LBA, and Chandra. The observed radio properties are in line with what is typically observed in high-$z$ radio quasars ($α_{\rm r}=0.72\pm 0.02$ and L$_{\rm 1.4GHz}=5.8 \pm 0.9 \times 10^{26}$ W Hz$^{-1}$). Despite the relatively low X-ray flux observed $F_{\rm 0.5-7.0 keV}=2.3\pm0.5 \times 10^{-14}$ erg sec$^{-1}$ cm$^{-2}$, the intrinsic luminosity in…

On the Jacobian polygon and \L ojasiewicz exponent of isolated complex hypersurface singularities
Baldur Sigur{\dh}sson
https://arxiv.org/abs/2509.06150 https://

On the Jacobian polygon and Łojasiewicz exponent of isolated complex hypersurface singularities
Given a hypersurface singularity $(X,0) \subset (\mathbb{C}^{n+1},0)$ defined by a holomorphic function $f:(\mathbb{C}^{n+1},0) \to (\mathbb{C},0)$, we introduce an alternating version of Teissier's Jacobian Newton polygon, associated with a complex isolated hypersurface singularity, and prove formulas for both these invariants in terms of an embedded resolution of $(X,0)$. The formula for the alternating version has an advantage, in that for Newton nondegenerate functions, it can be calculated…

Recasting the nature of INTEGRAL hard X-ray transients previously classified as active galactic nuclei
V. Sguera, L. Sidoli
https://arxiv.org/abs/2510.06920 https://

Recasting the nature of INTEGRAL hard X-ray transients previously classified as active galactic nuclei
We present new broad-band X-ray results aimed at the identification and characterization of four poorly studied hard X-ray transients discovered by INTEGRAL: IGR J16426+6536, IGR J09446-2636, IGR J21268+6203, and IGR J02447+7046. The key properties and X-ray behavior of these sources have remained largely unknown until now. We investigated the temporal, spectral, and energetic characteristics of their hard X-ray outbursts detected above 20 keV by INTEGRAL. In addition, we performed a systematic…

Le trafic est perturbé entre Paris Saint-Lazare et Versailles Rive Droite dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : panne de signalisation dans le secteur de Chaville.RD.
🤖 09/11 06:46

Fefferman multiplier theorem for Hardy martingales
Maciej Rzeszut
https://arxiv.org/abs/2509.07616 https://arxiv.org/pdf/2509.07616

Fefferman multiplier theorem for Hardy martingales
A well-known theorem due to Fefferman provides a characterization of Fourier multipliers from $H^1(\mathbb{T})$ to $\ell^1$, i.e. sequences $\left(λ_n\right)_{n=0}^\infty$ such that \[\sum_{n=0}^\infty \left|λ_n \widehat{f}(n)\right|\lesssim \|f\|_{L^1(\mathbb{T})},\] where $f(x)=\sum_{n=0}^\infty \widehat{f}(n)e^{inx}$. We extend it to the space $H^1\left(\mathbb{T}^\mathbb{N}\right)$ of Hardy martingales, i.e. the subspace of $L^1$ on the countable product $\mathbb{T}^\m…

Modular Reactor for In Situ X-ray Scattering, Spectroscopy, and ATR-IR Studies of Solvothermal Nanoparticle Synthesis
Sani Y. Harouna-Mayer, Melike Gumus Akcaalan, Jagadesh Kopula Kesavan, Tjark R. L. Groene, Lars Klemeyer, Sarah-Alexandra Hussak, Lukas Grote, a Davide Derelli, Francesco Caddeo, Cecilia Zito, Paul St\"utzle, Dorota Speer, Ann-Christin Dippel, Blanka Detlefs, Yannik Appiarius, Axel Jacobi von Wangelin, Dorota Koziej

Modular Reactor for In Situ X-ray Scattering, Spectroscopy, and ATR-IR Studies of Solvothermal Nanoparticle Synthesis
Understanding the chemical processes that occur during the solvothermal synthesis of functional nanomaterials is essential for their rational design and optimization for specific applications. However, these processes remain poorly understood, primarily due to the limitations of conventional ex situ characterization techniques and the technical challenges associated with in situ studies, particularly the design and implementation of suitable reactors. Here, we present a versatile cell suitable …

Le trafic est perturbé entre Paris Saint-Lazare et Nanterre Université dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : affaires oubliées (Š bord du train Š Nanterre-Université).
🤖 08/10 17:56

A log-free estimate for the diagonal paraproduct high $\times$ high $\to$ low in the 3D Navier-Stokes equation
Pylyp Cherevan
https://arxiv.org/abs/2510.07848 https://

A log-free estimate for the diagonal paraproduct high x high -> low in the 3D Navier-Stokes equation
We consider the diagonal paraproduct arising in the nonlinearity (u * grad) u for the three-dimensional Navier-Stokes equations. On scale-critical windows and in the range 1/6 < delta <= 5/8 we obtain a log-free estimate at the level L^2_t H^-1_x for the projection P_{< N^(1-delta)} div(u_N otimes v_N), consistent with the critical energy scheme. The main tools are phase-geometric integration, anisotropic local estimates on cylinders, and bilinear ell^2 decoupling on a finite-rank surface; the …

Le trafic est perturbé entre Versailles Rive Droite et Paris Saint-Lazare dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : panne d'un train Š Versailles Rive Droite.
🤖 09/09 16:07

First X-ray and radio polarimetry of the neutron star low-mass X-ray binary GX 17 2
Unnati Kashyap, Thomas J. Maccarone, Eliot C. Pattie, Mason Ng, Swati Ravi, Alexandra J. Tetarenko, Pau Bosch Cabot, Herman L. Marshall
https://arxiv.org/abs/2510.05284

First X-ray and radio polarimetry of the neutron star low-mass X-ray binary GX 17+2
We report the first polarimetric results of the neutron star (NS) low-mass X-ray binary (LMXB) Z-source GX 17+2 using the Imaging X-ray Polarimetry Explorer (IXPE) and the Very Large Array (VLA). We find that the X-ray source was polarized at PD = 1.9 +/- 0.3 % (1-sigma errors) with a polarization angle of PA = 11 +/- 4 degree (1-sigma errors). Simultaneous Nuclear Spectroscopic Telescope Array (NuSTAR) observations show that the source was in the normal branch (NB) during our IXPE observations…

First moment of quadratic Dirichlet $L$-functions with secondary terms
Martin \v{C}ech
https://arxiv.org/abs/2509.03197 https://arxiv.org/pdf/2509.03197

First moment of quadratic Dirichlet $L$-functions with secondary terms
We study the first moment of primitive quadratic Dirichlet $L$-functions. Assuming the Riemann hypothesis and the generalized Lindelöf hypothesis, we obtain an asymptotic formula at the central point with error $O(X^{1/4+ε})$, and identify lower-order terms of size $X^{1/3}\log X$.

Le trafic est fortement perturbé entre Paris Saint-Lazare et St-Nom-la-Bretèche et entre Paris Saint-Lazare et Versailles Rive Droite dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : malaise voyageur dans un train Š Bécon les Bruyères.
🤖 08/09 19:52

Schwarz-Pick type lemma and Landau type theorem for $\alpha$-harmonic mappings
Vibhuti Arora, Jiaolong Chen, Shankey Kumar, Qianyun Li
https://arxiv.org/abs/2509.06359 https://

Schwarz-Pick type lemma and Landau type theorem for $α$-harmonic mappings
The aim of this paper is twofold. First, we obtain a Schwarz-Pick type lemma for the $α$-harmonic mapping $u=P_α[ϕ]$, where $ϕ\in L^{p}(\mathbb{S}^{n-1},\mathbb{R} )$ and $p\in[1,\infty]$. We get an explicit form of the sharp function $\mathbf{C}_{α, q}(x)$ in the inequality $|\nabla u(x)| \leq \mathbf{C}_{α, q}(x)\|ϕ\|_{L^p(\mathbb{S}^{n-1}, \mathbb{ R} )}$. Second, we prove a Landau type theorem for $u=P_α[ϕ]$, where $ϕ\in L^{\infty}(\mathbb{S}^{n-1},…

Je suis en train de faire ma première vraie application web et j'essaie de respecter toutes les recommandations en matière d'accessibilité. C'est moi ou rien n'est fait pour que ce soit facile de respecter les recommandations ?
Genre, je fais un responsive design (i.e. la page se présente bien quelque soit la taille de l'écran, quelque soit la taille des caractères), ce qui fait que sur un écran étroit, je plie mon menu pour qu'il soit caché jusqu'Š ce qu…

Le trafic est fortement perturbé entre Paris Saint-Lazare et St-Nom-la-Bretèche et entre Paris Saint-Lazare et Versailles Rive Droite dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : malaise voyageur dans un train Š Bécon les Bruyères.
🤖 08/09 19:32

Embeddings of weighted projective spaces
Praise Adeyemo, Dominic Bunnett, Fabi\'an Levic\'an
https://arxiv.org/abs/2510.05076 https://arxiv.org/pdf…

Embeddings of weighted projective spaces
Let $X$ be a projective toric variety of dimension $n$ and let $L$ be a ample line bundle on $X$. For $k \geq 0$, it is in general difficult to determine whether $L^{\otimes k}$ is very ample and whether it additionally gives a projectively normal embedding. These two properties are equivalent to the very ampleness, respectively normality, of the corresponding polytope. By a result of Ewald-Wessels, both statements are classically known to hold for $k \geq n - 1$. We study embeddings of weigh…

What you see is what you get: empirically measured bolometric luminosities of Little Red Dots
Jenny E. Greene, David J. Setton, Lukas J. Furtak, Rohan P. Naidu, Marta Volonteri, Pratika Dayal, Ivo Labbe, Pieter van Dokkum, Rachel Bezanson, Gabriel Brammer, Sam E. Cutler, Karl Glazebrook, Anna de Graaff, Michaela Hirschmann, Raphael E. Hviding, Vasily Kokorev, Joel Leja, Hanpu Liu, Yilun Ma, Jorryt Matthee, Themiya Nanayakkara, Pascal A. Oesch, Richard Pan, Sedona H. Price, Justin S. Sp…

What you see is what you get: empirically measured bolometric luminosities of Little Red Dots
New populations of red active galactic nuclei (known as ``Little Red Dots'') discovered by JWST exhibit remarkable spectral energy distributions. Leveraging X-ray through far-infrared observations of two of the most luminous known Little Red Dots, we directly their bolometric luminosities. We find evidence that more than half of the bolometric luminosity likely emerges in the rest-frame optical, with $L_{\rm bol}/L_{5100} = 5$, roughly half the value for ``standard'' Active Galactic Nuclei. Mea…

Le trafic est interrompu entre Paris Saint-Lazare et La Défense dans les 2 sens jusqu'Š 21h et fortement perturbé entre La Défense et St-Nom-la-Bretèche et entre La Défense et Versailles Rive Droite dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : malaise voyageur dans un train Š Bécon les Bruyères.
🤖 08/09 19:38

Le trafic est interrompu entre Paris Saint-Lazare et La Défense dans les 2 sens jusqu'Š 21h et fortement perturbé entre La Défense et St-Nom-la-Bretèche et entre La Défense et Versailles Rive Droite dans les 2 sens. Rendez-vous sur la rubrique "Recherche Itinéraire", pour retrouver un itinéraire prenant en compte cette perturbation.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : malaise voyageur dans un train Š Bécon le…

On the tangent bundle and the divisor theory of a general matroid
Ronnie Cheng
https://arxiv.org/abs/2510.06609 https://arxiv.org/pdf/2510.06609

On the tangent bundle and the divisor theory of a general matroid
For a loopless matroid $M$, we construct a $K$-class $T_M\in K(X_{M})$. When $M$ is realizable, $T_M$ recovers the $K$-class of the tangent bundle of the wonderful compactification $W_L$. We derive two formulas for the total Chern class of $T_M$ and prove that the associated Todd class agrees with the Todd class appearing in the matroid Hirzebruch--Riemann--Roch formula. We define a ``fake effective cone'' so that big and nef divisors in a matroid can be characterized in a manner analogous to h…

On decay and regularly of solutions of the Benjamin-Ono equation
Felipe Linares, Gustavo Ponce
https://arxiv.org/abs/2509.06816 https://arxiv.org/pdf/2509.…

On decay and regularly of solutions of the Benjamin-Ono equation
We study persistence properties of solutions of the Benjamin-Ono equation in weighted Sobolev spaces. Roughly, we show that for $β<7/2$, the solution $u(x,t)$ of the BO remains in the space $L^2(|x|^{2β} dx)$ if and only if its data $u(x,0)$ belongs to this space and it is regular enough, i.e. $u_0\in H^β(\mathbb R)$.

A set of distinctive properties ruling the prompt emission of GRB 230307A and other long {\gamma}-ray bursts from compact object mergers
R. Maccary, C. Guidorzi, M. Maistrello, S. Kobayashi, M. Bulla, R. Moradi, S. -X. Yi, C. W. Wang, W. L. Zhang, W. -J. Tan, S. -L Xiong, S. -N. Zhang
https://arxiv.org/abs/2509.05628

A set of distinctive properties ruling the prompt emission of GRB 230307A and other long γ-ray bursts from compact object mergers
Short gamma-ray bursts (SGRBs), occasionally followed by a long and spectrally soft extended emission, are associated with compact object mergers (COMs). Yet, a few recent long GRBs (LGRBs) show compelling evidence for a COM origin, in contrast with the massive-star core-collapse origin of most LGRBs. While possible COM indicators were found, such as the minimum variability timescale (MVT), a detailed and unique characterisation of their gamma-ray prompt emission that may help identify and expl…

$L^2$ restriction bounds for analytic continuations of quantum ergodic Laplace eigenfunctions
John A. Toth, Xiao Xiao
https://arxiv.org/abs/2510.05570 https://

$L^2$ restriction bounds for analytic continuations of quantum ergodic Laplace eigenfunctions
We prove a quantum ergodic restriction (QER) theorem for real hypersurfaces $Σ\subset X,$ where $X$ is the Grauert tube associated with a real-analytic, compact Riemannian manifold. As an application, we obtain $h$ independent upper and lower bounds for the $L^2$ - restrictions of the FBI transform of Laplace eigenfunctions restricted to $Σ$ satisfying certain generic geometric conditions.

Apparemment, une voiture électrique, c'est entre 5 et 15 tonnes de CO2 Š construire, surtout en fonction de la taille de la batterie. C'est quand même un facteur de 1 Š 3. Ça laisse la place Š des grosses différences quand on parle de bilan écologique de la voiture électrique...
L'Ademe dit que c'est 86g de CO2 par kilomètres parcourus. Donc ça veut dire que l'Ademe estime qu'une (batterie de) voiture électrique est "morte" après entre 5.000.000/86 = 5…

La gare de Cergy Saint-Christophe en direction de Cergy le Haut n'est pas desservie jusqu'Š 17h45.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : affaires oubliées (en gare de Cergy-St-Christophe).
🤖 08/09 16:55

Le trafic est perturbé entre Paris Saint-Lazare et St-Nom-la-Bretèche et entre Paris Saint-Lazare et Versailles Rive Droite dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : panne informatique (incident technique au poste de gestion des circulations).
🤖 07/11 21:03

Le trafic est fortement perturbé entre Paris Saint-Lazare et Versailles Rive Droite et entre Paris Saint-Lazare et St-Nom-la-Bretèche dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : panne informatique (dysfonctionnement des outils de gestion des circulations).
🤖 07/11 17:25

The $L^p$ regularity problem for parabolic operators with transversally independent coefficients
Martin Dindo\v{s}, Jill Pipher, Martin Ulmer
https://arxiv.org/abs/2509.06627 ht…

The $L^p$ regularity problem for parabolic operators with transversally independent coefficients
In this paper, we fully resolve the question of whether the Regularity problem for the parabolic PDE $\partial_tu - \mbox{div}(A\nabla u)=0$ on the domain $\mathbb R^{n+1}_+\times\mathbb R$ is solvable for some $p\in (1,\infty)$ under the assumption that the matrix $A$ is elliptic, has bounded and measurable coefficients and its coefficients are independent of the spatial variable $x_{n+1}$ (which is transversal to the boundary). We prove that for some $p_0>1$ the Regularity problem is solvable…

Spectropolarimetry of synchrotron radiation from relativistic electrons with anisotropic pitch-angle and various energy distributions
Paul C. W. Lai, Kaye J. Li, Y. X. Jane Yap, Kinwah Wu, Albert K. H. Kong
https://arxiv.org/abs/2509.04572

Spectropolarimetry of synchrotron radiation from relativistic electrons with anisotropic pitch-angle and various energy distributions
For synchrotron radiation from relativistic electrons having a power-law energy distribution with a power-law index $p$ in an optically thin medium with a locally uniform magnetic field, it is generally adopted that the spectral index $α= (p-1)/2$ and the degree of linear polarisation $Π_{\rm L,pl} = (p +1)/(p+7/3)$, and hence that $Π_{\rm L,pl} = (α+1)/(α+5/3)$. These ($α$, $Π_{\rm L,pl}$; $p$) relations are derived assuming that the electrons have an isotropic momentum distribution and…

Le trafic est fortement pérturbé entre Paris Saint-Lazare et Versailles Rive Droite et entre Paris Saint-Lazare et St-Nom-la-Bretèche dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : prolongation des travaux sur le réseau ferroviaire.
🤖 08/10 05:00

Regularity theory for mixed local-nonlocal problem involving general stable operators
Pedro Fellype Pontes, Minbo Yang
https://arxiv.org/abs/2510.06569 https://

Regularity theory for mixed local-nonlocal problem involving general stable operators
In this paper, we study the regularity of solutions to a linear elliptic equation involving a mixed local-nonlocal operator of the form $$Lu - \operatorname{div}\big(a(x)\nabla u(x)\big)= f, \quad \text{in } Ω\subset \mathbb{R}^n,$$ where $L$ is a general stable Lévy type operator and $a(\cdot)$ is a positive Hölder continuous weight. By establishing a maximum principle and a Liouville-type result in the entire space, we are able to derive the interior regularity and the regularity up to the…

From X-rays to High-Energy Gamma-rays: A Comprehensive Multi-Wavelength Study of Early Gamma-Ray Burst Afterglows
P. Tiwari, B. Banerjee, D. Miceli, G. Oganesyan, A. Ierardi, S. Macera, M. Branchesi, L. Nava, S. Mohnani, S. Agarwal, A. Shukla
https://arxiv.org/abs/2510.05239

From X-rays to High-Energy Gamma-rays: A Comprehensive Multi-Wavelength Study of Early Gamma-Ray Burst Afterglows
Gamma-ray Bursts (GRBs) generate powerful relativistic jets that inject a large amount of energy into their surrounding environment, producing blast waves that accelerate particles to high energies. The GRB afterglow radiation provides a powerful means to investigate the microphysics of relativistic shocks and to probe the medium surrounding the progenitor of the burst. In this study, we present a comprehensive multiwavelength analysis of 31 GRBs observed between 2008 and 2024 from the Neil Geh…

The role of the initial distribution in population survival within a bounded habitat
Rafael de la Rosa, Elena Medina
https://arxiv.org/abs/2509.06179 https://

The role of the initial distribution in population survival within a bounded habitat
In this paper, we analyze the role of initial conditions in population persistence. Specifically, we consider the reaction-diffusion equation $u_t\,=\,D\,(u^{ν-1}\,u_x)_x\,+\,a\,u^μ$, with $μ,ν>0$, accompanied by hostile boundary conditions and examine two families of one-parametric initial distributions, including homogeneous distributions. The model was previously studied by Colombo and Anteneodo (2018). They determined appropriate habitat sizes $l$ for the survival of a population, whose…

Le trafic est perturbé entre St-Nom-la-Bretèche et Paris Saint-Lazare dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : malaise voyageur (en gare de St-Nom-la-Bretèche).
🤖 06/10 19:50

Le trafic est ralenti entre Paris Saint-Lazare et Versailles Rive Droite et entre Paris Saint-Lazare et St-Nom-la-Bretèche dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : travaux sur le réseau ferroviaire (renouvellement des voies et du ballast dans le secteur de St-Cloud).
🤖 07/10 13:42

Le trafic est interrompu entre Versailles Rive Droite et Paris Saint-Lazare et entre St-Nom-la-Bretèche et Paris Saint-Lazare dans les 2 sens jusqu'Š 07h.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : panne d'alimentation électrique Š St Cloud (coupure demandée par le gestionnaire de réseau électrique pour des raisons de sécurité)
🤖 07/10 06:03

Le trafic est interrompu entre Versailles Rive Droite et Paris Saint-Lazare et entre St-Nom-la-Bretèche et Paris Saint-Lazare dans les 2 sens jusqu'Š 07h.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : panne d'alimentation électrique Š St Cloud.
🤖 07/10 05:57

Le trafic est interrompu entre Suresnes Mont Valérien et Garches Marnes-la-C. et entre Suresnes Mont Valérien et Versailles Rive Droite dans les 2 sens jusqu'Š 09h et ralenti entre Garches Marnes-la-C. et St-Nom-la-Bretèche dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : panne d'alimentation électrique.
🤖 07/10 07:51

Le trafic est interrompu entre Versailles Rive Droite et La Défense et entre La Défense et Garches Marnes-la-C. dans les 2 sens jusqu'Š 09h.
Rendez-vous sur la rubrique "Recherche Itinéraire", pour retrouver un itinéraire prenant en compte cette perturbation.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : panne d'alimentation électrique.
🤖 07/10 07:29

Le trafic est fortement Perturbé entre Paris Saint-Lazare et Versailles Rive Droite et entre Paris Saint-Lazare et St-Nom-la-Bretèche dans les 2 sens.
Rendez-vous sur la rubrique "Recherche Itinéraire", pour retrouver un itinéraire prenant en compte cette perturbation.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : panne d'alimentation électrique Š St Cloud .
🤖 07/10 09:28

Le trafic est ralenti entre Paris Saint-Lazare et Cergy le Haut dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : Incident affectant la voie dans le secteur d'Achères-Ville.
🤖 06/11 11:15

Le trafic est perturbé entre Paris Saint-Lazare et Versailles Rive Droite dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : obstacle sur la voie dans le secteur de Viroflay-Rive-Droite.
🤖 06/10 07:05

Le trafic est perturbé entre Versailles Rive Droite et Paris Saint-Lazare dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : obstacle sur la voie dans le secteur de Viroflay Rive Droite.
🤖 06/10 06:06

Le trafic est perturbé entre Paris Saint-Lazare et St-Nom-la-Bretèche et entre Paris Saint-Lazare et Versailles Rive Droite dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : affaires oubliées Š bord d'un train au Val d'Or.
🤖 05/11 18:07

Le trafic est ralenti entre Paris Saint-Lazare et St-Nom-la-Bretèche et entre Paris Saint-Lazare et Versailles Rive Droite dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : panne d'un train Š Chaville (train de la ligne U).
🤖 06/10 09:40

Le trafic est perturbé entre Paris Saint-Lazare et Versailles Rive Droite et entre Paris Saint-Lazare et St-Nom-la-Bretèche dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : panne du système de signalisation dans le secteur de Chaville-RD
🤖 06/10 13:52

Le trafic est fortement perturbé entre Sartrouville et Cergy le Haut dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : Incident affectant la voie dans le secteur de Neuville-Université.
🤖 05/11 09:16

Le trafic est interrompu entre Sartrouville et Cergy le Haut dans les 2 sens jusqu'Š 21h.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : incident affectant la voie Š Neuville-Université.
🤖 05/11 15:26

Le trafic est ralenti entre Paris Saint-Lazare et Maisons-Laffitte dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : individus sur les voies dans le secteur de Sartrouville.
🤖 05/10 15:15

Le trafic est perturbé entre Paris Saint-Lazare et Versailles Rive Droite dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : affaires oubliées Š bord d'un train en gare de Versailles-RD.
🤖 04/09 18:40

Le trafic est perturbé entre Paris Saint-Lazare et St-Nom-la-Bretèche et entre Paris Saint-Lazare et Versailles Rive Droite dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : affaires oubliées (en gare de Paris-St-Lazare).
🤖 04/11 19:02