Tootfinder

"For her part, Ms. Petrova is seeing the United States from a new and unsettling vantage point. “I feel like something is happening generally in America,” she said, in an interview over a video link. “Something bad is happening. I don’t think everybody understands.”"
#GiftArticle #USPolitics #UnAmerican
https://www.nytimes.com/2025/04/11/science/russian-scientist-ice-detained-harvard.html?unlocked_article_code=1._E4.cPsK.7-ImYTH7vDbB&smid=url-share

A space-time interface-fitted method for moving-subdomain distributed control problems with energy regularization
Quang Huy Nguyen, Phuong Cuc Hoang, Van Chien Le, Thi Thanh Mai Ta
https://arxiv.org/abs/2506.10924

A space-time interface-fitted method for moving-subdomain distributed control problems with energy regularization
This paper investigates a space-time interface-fitted approximation of a moving-interface optimal control problem with energy regularization. We reformulate the optimality conditions into a variational problem involving both the state and adjoint. This problem is shown to be equivalent to our optimal control problem. Based on fully unstructured, space-time interface-fitted meshes, we propose and analyze a Petrov-Galerkin approximation of the problem. An optimal error estimate with respect to a …

🇺🇦 Auf radioeins läuft...
David Byrne:
🎵 In The Future
#NowPlaying #DavidByrne
https://piotrpaschke.bandcamp.com/track/past-present-future-in-homage-for-my-life-in-the-bush-of-ghosts-brian-eno-david-byrne
https://open.spotify.com/track/1ffblTW5ZVMFmfj1sw1tHX

From Geometry to Physics -- AZ: touches to the portrait
Yurii Ignat'ev
https://arxiv.org/abs/2506.08148 https://arxiv.org/pdf/250…

From Geometry to Physics -- AZ: touches to the portrait
The process launched by Lobachevsky. The movement of the Kazan school of geometry towards physics. Personal memories of Alexei Zinovievich Petrov, the great Kazan geometer and theoretical physicist, who became the Author's Guiding Star. KeyWords: Alexey Zinovievich Petrov, geometry, general theory of relativity, Kazan University, Department of Relativity and Gravitation Theory, methods of teaching exact sciences.

🇺🇦 #NowPlaying on KEXP's #VarietyMix
LSB:
🎵 Potshot
#LSB
https://ftnts.com/track/potshot-2
https://open.spotify.com/track/4PmZ4I2ptrIViiHwZiJIQF

alzare il suono ... alza foi
The Boss
#PituraFreska

‪Langston Hughes
Let America be America again.
Let it be the dream it used to be.
Let it be the pioneer on the plain
Seeking a home where he himself is free.

(America never was America to me.)
full poem here:
#Poetry

Less is More: some Computational Principles based on Parcimony, and Limitations of Natural Intelligence
Laura Cohen, Xavier Hinaut, Lilyana Petrova, Alexandre Pitti, Syd Reynal, Ichiro Tsuda
https://arxiv.org/abs/2506.07060

Less is More: some Computational Principles based on Parcimony, and Limitations of Natural Intelligence
Natural intelligence (NI) consistently achieves more with less. Infants learn language, develop abstract concepts, and acquire sensorimotor skills from sparse data, all within tight neural and energy limits. In contrast, today's AI relies on virtually unlimited computational power, energy, and data to reach high performance. This paper argues that constraints in NI are paradoxically catalysts for efficiency, adaptability, and creativity. We first show how limited neural bandwidth promotes conci…

On gluing and splitting series invariants of plumbed 3-manifolds
Allison H. Moore, Nicola Tarasca
https://arxiv.org/abs/2506.06515 https://

On gluing and splitting series invariants of plumbed 3-manifolds
We study series invariants for plumbed 3-manifolds and knot complements twisted by a root lattice. Our series recover recent results of Gukov-Pei-Putrov-Vafa, Gukov-Manolescu, Park, and Ri and apply more generally to 3-manifolds which are not necessarily negative definite. We show that our series verify certain gluing and splitting properties related to the corresponding operations on 3-manifolds. We conclude with an explicit description of the case of lens spaces and Brieskorn spheres.

Sie gehören zum Besten, was der deutsche Schachnachwuchs zu bieten hat! 🔥
Auch 2025 sind wieder zahlreiche Kaderspieler:innen des Deutschen Schachbundes bei der #dem25 am Start – und unter ihnen auch Titelverteidiger:innen:
Tamila Trunz, Michelle Trunz, Vadim Petrovskiy, Johannes von Mettenheim und Mykhaylo Nezhyvenko haben 2024 jeweils ihre Altersklasse gewonnen und wollen auch dieses Jah…