Tootfinder

On irreducibility of certain low dimensional automorphic Galois representations
Boyi Dai
https://arxiv.org/abs/2510.12496 https://arxiv.org/pdf/2510.12496

On irreducibility of certain low dimensional automorphic Galois representations
We study irreducibility of Galois representations $ρ_{π,λ}$ associated to a $n=7$ or 8-dimensional regular algebraic essentially self-dual cuspidal automorphic representation $π$ of $\text{GL}_n(\mathbb{A}_\mathbb{Q})$. We show $ρ_{π,λ}$ is irreducible for all but finitely many $λ$ under the following extra conditions. (i) If $n=7$, and there exists no $λ$ such that the Lie type of $ρ_{π,λ}$ is the standard representation of exceptional group $\textbf{G}_2$. (ii) If $n=8$, and when …

World breaks renewable records - adding 582 GW of capacity in 2024 - but must move faster to hit the agreed 2030 tripling goal.
From @irena-official.bsky.social:
https://www.irena.org/News/pressreleases/2

World Breaks Renewable Records but Must Move Faster to Hit 2030 Tripling Goal
The world is falling behind on its renewable energy and efficiency goals despite record progress last year, confirms a new report released today by the International Renewable Energy Agency (IRENA), the COP30 Brazilian Presidency, and the Global Renewables Alliance (GRA) during a pre-COP30 high-level event in Brasília.

Zhu algebras of superconformal vertex algebras
Ryo Sato, Shintarou Yanagida
https://arxiv.org/abs/2509.13124 https://arxiv.org/pdf/2509.13124

Zhu algebras of superconformal vertex algebras
The purpose of this note is to demonstrate the advantages of Y.-Z.\ Huang's definition of the Zhu algebra (Comm.\ Contemp.\ Math., 7 (2005), no.\ 5, 649--706) for an arbitrary vertex algebra, not necessarily equipped with Hamiltonian operators or Virasoro elements, by achieving the following two goals: (1) determining the Zhu algebras of $N=1,2,3,4$ and big $N=4$ superconformal vertex algebras, and (2) introducing the Zhu algebras of $N_K=N$ supersymmetric vertex algebras.

Violent mergers can explain the inflated state of some of the fastest stars in the Galaxy
Aakash Bhat, R\"udiger Pakmor, Ken J. Shen, Evan B. Bauer, Abinaya Swaruba Rajamuthukumar
https://arxiv.org/abs/2510.12197

Violent mergers can explain the inflated state of some of the fastest stars in the Galaxy
A significant number of hypervelocity stars with velocities between $1500-2500$ km/s have recently been observed. The only plausible explanation so far is that they have been produced through thermonuclear supernovae in white dwarf binaries. Since these stars are thought to be surviving donors of Type Ia supernovae, a surprising finding was that these stars are inflated, with radii an order of magnitude more than expected for Roche-lobe filling donors. Recent attempts at explaining them have co…

Auch im nächsten Jahr wird in Dresden wieder #HeartTimes stattfinden. Die Anmeldung ist ab 16.10. möglich.
https://www.heart-times.de
Route von diesem Jahr:

JWST reveals a supernova following a #GammaRayBurst at z ≃ 7.3: #Webb Identifies Earliest #Supernova to Date, Shows Host Galaxy: https://science.nasa.gov/missions/webb/nasas-webb-identifies-earliest-supernova-to-date-shows-host-galaxy/

Talking about #neomutt today. Hopefully, it'll be easier to read than it was to write :)
https://www-gem.codeberg.page/cli_neomutt

Nach einer ausgiebigen Foto Session sind wir rein, und dann auch relativ bald in den Vorführraum rein. Der ist wohl ganz neu, und die Dame, die durch den Abend führte, hatte sich zum Ziel gesetzt, gleich nach einen Rekord aufzustellen bezüglich Anzahl zu verdankender Personen auf der Bühne. Also als Sponsoren, politische Amtsträger, Filmcrew und Familie.
Auch das musste natürlich fotografisch festgehalten werden, und das Resultat hat es in die Medien geschafft.
https://www.metro.cz/kraje/ustecky-kraj/pribeh-prumyslnickeho-rodu-schichtu-v-usti-pripomnel-film-vystava-i-autoveteran.A251016_213132_metro-usti-zpravy_air

Direct observation of the X-ray counterpart of the H{\alpha} filaments and of the sloshing spiral in the Perseus galaxy cluster
Adrien Picquenot, Fabio Acero, Valeria Olivares, Michela Negro, Gabriel W. Pratt
https://arxiv.org/abs/2510.09559

Direct observation of the X-ray counterpart of the Hα filaments and of the sloshing spiral in the Perseus galaxy cluster
Deep Chandra observations of the Perseus galaxy cluster have allowed for the discovery of X-ray counterparts to the Hα filamentary structures and of a sloshing spiral. However, both components are extremely faint, and their study is largely hindered by the volume-filling hot intracluster medium (ICM). Using the Poisson General Morphological Component Analysis (pGMCA) algorithm, a blind source separation method adapted for Poissonian statistics, we were able to extract detailed, clean morpholog…

Moody Urbanity - UP 🔝
情绪化城市 - 上面 🔝
📷 Nikon FE
🎞️ Ilford HP5 Plus 400, expired 1993
#filmphotography #Photography #blackandwhite