Tootfinder

(Je n'ai pas accès, mais c'est une bonne question!)
"Le Monde – Dominique Méda : « Qu’est-ce qui explique la haine de l’écologie, qui sert de ciment en Europe et ailleurs ? »"
https://www.

Dominique Méda : « Qu’est-ce qui explique la haine de l’écologie, qui sert de ciment en Europe et ailleurs ? »
Comment des partis politiques, qui prétendent gouverner la France, ont-ils pu en arriver à une position aussi irresponsable que celle de proposer un moratoire sur les énergies renouvelables, se demande la sociologue dans sa chronique.

Star decompositions via orientations
Viktor Harangi
https://arxiv.org/abs/2506.05194 https://arxiv.org/pdf/2506.05194

Star decompositions via orientations
A $k$-star decomposition of a graph is a partition of its edges into $k$-stars (i.e., $k$ edges with a common vertex). The paper studies the following problem: given $k \leq d/2$, does the random $d$-regular graph have a $k$-star decomposition (asymptotically almost surely, provided that the number of edges is divisible by $k$)? Delcourt, Greenhill, Isaev, Lidický, and Postle proved the a.a.s. existence for every odd $k$ using earlier results regarding orientations satisfying certain degree co…

This https://arxiv.org/abs/2411.13669 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

Quantum Algorithm for Vibronic Dynamics: Case Study on Singlet Fission Solar Cell Design
Vibronic interactions between nuclear motion and electronic states are critical for the accurate modeling of photochemistry. However, accurate simulations of fully quantum non-adiabatic dynamics are often prohibitively expensive for classical methods beyond small systems. In this work, we present a quantum algorithm based on product formulas for simulating time evolution under a general vibronic Hamiltonian in real space, capable of handling an arbitrary number of electronic states and vibratio…

Welschinger--Witt invariants
Erwan Brugall\'e, Johannes Rau, Kirsten Wickelgren
https://arxiv.org/abs/2509.04172 https://arxiv.org/pdf/2509.04172

Welschinger--Witt invariants
Welschinger invariants are signed counts of real rational curves satisfying contraints. Quadratic Gromov--Witten invariants give such counts over general fields of characteristic different from 2 and 3. For rational del Pezzo surfaces over a field, we propose a conjectural relationship between Welschinger and quadratic Gromov--Witten invariants. We construct multivariable unramified Witt invariants, in the sense of Serre, from Welschinger invariants and call them Welschinger--Witt invariants. W…

Theoretical estimate and characteristics of electro-vortex flows in cylindrical electrodes
Swapnil Soni, Avishek Ranjan
https://arxiv.org/abs/2508.02297 https://

Theoretical estimate and characteristics of electro-vortex flows in cylindrical electrodes
Electro-vortex flows (EVF) arise in conducting fluids due to diverging current lines and the non-conservative Lorentz force. They are typically characterized by the $S$ parameter, defined as $S=μ_0 I^2/4π^2 ρν^2$, where it is known that $Re \sim \sqrt{S}$ for large currents. However, the strength of the EVF in a confined cylindrical domain with a co-axially placed current collector (CC) depends also on the ratio of the CC radius to the cylinder radius, $K=r_0/R$, in addition to the current …

Online matching on stochastic block model
Maria Cherifa (MAP5, CREST), Cl\'ement Calauz\`enes (CREST), Vianney Perchet (CREST)
https://arxiv.org/abs/2506.04921

Online matching on stochastic block model
While online bipartite matching has gained significant attention in recent years, existing analyses in stochastic settings fail to capture the performance of algorithms on heterogeneous graphs, such as those incorporating inter-group affinities or other social network structures. In this work, we address this gap by studying online bipartite matching within the stochastic block model (SBM). A fixed set of offline nodes is matched to a stream of online arrivals, with connections governed probabi…

Better Recommendations: Validating AI-generated Subject Terms Through LOC Linked Data Service
Kwok Leong Tang, Yi Jiang
https://arxiv.org/abs/2508.00867 https://

Better Recommendations: Validating AI-generated Subject Terms Through LOC Linked Data Service
This article explores the integration of AI-generated subject terms into library cataloging, focusing on validation through the Library of Congress Linked Data Service. It examines the challenges of traditional subject cataloging under the Library of Congress Subject Headings system, including inefficiencies and cataloging backlogs. While generative AI shows promise in expediting cataloging workflows, studies reveal significant limitations in the accuracy of AI-assigned subject headings. The ar…

New Radio Data on Sources of the Big Trio Program for Searching for Distant Radio Galaxies
Olga Zhelenkova, Adelina Temirova, Yurij Parijskij, Natalia Soboleva
https://arxiv.org/abs/2508.02225

New Radio Data on Sources of the Big Trio Program for Searching for Distant Radio Galaxies
A sample of objects with steep and ultra-steep spectra was prepared from radio sources of the Cold experiment surveys conducted on the RATAN-600 radio telescope. It formed the basis for the Big Trio program for searching for distant radio galaxies. With the advent of high-sensitivity, high-angular-resolution radio sky surveys, as well as deep optical and infrared surveys, it became possible to conduct additional studies of the sample. We refined the morphology and spectra of continuous radio em…

CALL FOR PROPOSALS: Palgrave Studies in Mediating Kinship, Representation, and Difference
https://ift.tt/FYkjf79
updated: Friday, September 5, 2025 - 9:25amfull name / name of organization: Series editors: May…
via Input 4 RELCFP

The Most Luminous Known Fast Blue Optical Transient AT 2024wpp: Unprecedented Evolution and Properties in the X-rays and Radio
A. J. Nayana, Raffaella Margutti, Eli Wiston, Tanmoy Laskar, Giulia Migliori, Ryan Chornock, Timothy J. Galvin, Natalie LeBaron, Aprajita Hajela, Collin T. Christy, Itai Sfaradi, Daichi Tsuna, Olivia Aspegren, Fabio De Colle, Brian D. Metzger, Wenbin Lu, Paz Beniamini, Daniel Kasen, Edo Berger, Brian W. Grefenstette, Kate D. Alexander, G. C. Anupama, Deanne L. …

The Most Luminous Known Fast Blue Optical Transient AT 2024wpp: Unprecedented Evolution and Properties in the X-rays and Radio
We present X-ray (0.3--79 keV) and radio (0.25--203 GHz) observations of the most luminous Fast Blue Optical Transient (LFBOT) AT\,2024wpp at $z=0.0868$, spanning 2--280 days after first light. AT 2024wpp shows luminous ($L_{\rm X} \approx 1.5 \times 10^{43}\, \rm erg\,s^{-1}$), variable X-ray emission with a Compton hump peaking at $δt \approx 50$ days. The X-ray spectrum evolves from a soft ($F_ν \propto ν^{-0.6}$) to an extremely hard state ($F_ν \propto ν^{1.26}$) accompanied by a re-b…