Tootfinder

Orionnebel, Plejaden und Hyaden zeigen Entwicklung von Sternhaufen auf
Der Orionnebel, die Hyaden und die Plejaden sind mit bloßem Auge sichtbar. Die Sternhaufen stellen offenbar beispielhaft verschiedene Entwicklungsetappen dar.

🇺🇦 #NowPlaying on KEXP's #VarietyMix
The James Hunter Six:
🎵 Free Your Mind (While You Still Got Time)
#TheJamesHunterSix
https://jameshuntersix.bandcamp.com/track/free-your-mind-while-you-still-got-time
https://open.spotify.com/track/2PZb0KOOIOrhmefARQyNgC

Online Homogeneity Can Emerge Without Filtering Algorithms or Homophily Preferences
Petter T\"ornberg
https://arxiv.org/abs/2508.10466 https://arxiv.o…

Online Homogeneity Can Emerge Without Filtering Algorithms or Homophily Preferences
Ideologically homogeneous online environments - often described as "echo chambers" or "filter bubbles" - are widely seen as drivers of polarization, radicalization, and misinformation. A central debate asks whether such homophily stems primarily from algorithmic curation or users' preference for like-minded peers. This study challenges that view by showing that homogeneity can emerge in the absence of both filtering algorithms and user preferences. Using an agent-based model inspired by Schelli…

Exponential decay in $O(n)$-invariant quantum spin systems
Jakob E. Bj\"ornberg, Kieran Ryan
https://arxiv.org/abs/2506.22254 https://

Exponential decay in $O(n)$-invariant quantum spin systems
We consider $O(n)$-invariant and reflection-positive quantum spin systems on the integer lattice in any dimension, and prove that spin-spin correlations decay exponentially fast provided n is large enough. This answers a question of Ueltschi, who proved that for small n there is instead long-range order (for d at least 3).

User Manual for Model-based Imaging Inverse Problem
Xiaodong Wang
https://arxiv.org/abs/2509.01572 https://arxiv.org/pdf/2509.01572

User Manual for Model-based Imaging Inverse Problem
This user manual is intended to provide a detailed description on model-based optimization for imaging inverse problem. Theseproblems can be particularly complex and challenging, especially for individuals without prior exposure to convex optimization orinverse problem theory, like myself. In light of this, I am writing this manual to clarify and systematically organize the mathematicalrationale underlying imaging inverse problems. This manual might not be accurate in mathmatical notion but mor…

Can We Fix Social Media? Testing Prosocial Interventions using Generative Social Simulation
Maik Larooij, Petter T\"ornberg
https://arxiv.org/abs/2508.03385 https://…

Can We Fix Social Media? Testing Prosocial Interventions using Generative Social Simulation
Social media platforms have been widely linked to societal harms, including rising polarization and the erosion of constructive debate. Can these problems be mitigated through prosocial interventions? We address this question using a novel method - generative social simulation - that embeds Large Language Models within Agent-Based Models to create socially rich synthetic platforms. We create a minimal platform where agents can post, repost, and follow others. We find that the resulting followin…

🇺🇦 #NowPlaying on KEXP's #StreetSounds
Showbiz & A.G.:
🎵 Next Level (remix)
#Showbiz #AG
https://ysrmusic.bandcamp.com/track/next-level-rmx
https://open.spotify.com/track/2mehHNForRahnPueLQAgfv