Tootfinder

Intressant i "Älskade politik" om hur regeringskansliet numera försöker stoppa "paper trails" i många fall – och de "ideologiska skälen" till stoppet för Unrwa-stödet. https://www.dn.se/podd/alskade-politik/tomtar-och-t…

Efter den lite kaotiska klungan på Arlanda igår, fick @… /@alexandrauo.bsky.social@bsky.brid.gy ställa några frågor till Greta Thunberg när hon väntade på bussen. Läs hela här: https://www.

Greta Thunberg tillbaka i Sverige: ”Regeringens tystnad är talande”
Sveriges regering är medskyldig till folkmordet och hanteringen efter Israels olagliga ingripande mot hjälpfartyget Madleen är talande för…

Ny demonstration i #Paris nu för att kräva frigivandet av de övriga i besättningen på #Madleen. Oklart om Greta Thunberg kan/tillåts komma hit. Enligt uppgift flyger hon till Sverige ikväll.

This https://arxiv.org/abs/1908.10505 has been replaced.
link: https://scholar.google.com/scholar?q=a

Spectral properties of graphs associated to the Basilica group
We provide the foundation of the spectral analysis of the Laplacian on the orbital Schreier graphs of the Basilica group, the iterated monodromy group of the quadratic polynomial $z^2-1$. This group is an important example in the class of self-similar amenable but not elementary amenable finite automata groups studied by Grigorchuk, Żuk, \v Sunić, Bartholdi, Virág, Nekrashevych, Kaimanovich, Nagnibeda et al. We prove that the spectrum of the Laplacian has infinitely many gaps and that the su…

Some Historical Misconceptions and Inaccuracies Regarding The 1908 Tunguska Event
Andrei Ol'khovatov
https://arxiv.org/abs/2505.05484 https://

Some Historical Misconceptions and Inaccuracies Regarding The 1908 Tunguska Event
This paper is a continuation of a series of works, devoted to various aspects of the 1908 Tunguska event. A large number of hypotheses about its causes have been put forward already. However, so far none of them has received convincing evidence. This is probably why new hypotheses appear almost every year, not only in the mass-media, but also in scientific literature. At the same time, any hypothesis should not contradict the known facts about the event. Unfortunately, the authors of new hypoth…

This https://arxiv.org/abs/1908.09164 has been replaced.
link: https://scholar.google.com/scholar?q=a

A homological approach to chromatic complexity of algebraic K-theory
The family of Thom spectra $y(n)$ interpolates between the sphere spectrum and the mod two Eilenberg--MacLane spectrum. Computations of Mahowald, Ravenel, Shick, and the authors show that the associative ring spectrum $y(n)$ has type $n$. Using trace methods, we give evidence that algebraic K-theory preserves this chromatic complexity. Our approach sheds light on the chromatic complexity of topological negative cyclic homology and topological periodic cyclic homology, which approximate algebrai…

🇺🇦 #NowPlaying on BBCRadio3's #ThroughTheNight
Alexander Scriabin, Orchestre national de France & Evgeny Fyodorovich Svetlanov:
🎵 Poeme de l'extase for orchestra, Op 54, (1908)
#AlexanderScriabin #OrchestrenationaldeFrance #EvgenyFyodorovichSvetlanov

Namibia observes first official Genocide Remembrance Day, marking the closure of German-run concentration camps in 1908.
This commemoration honors the victims of the Herero and Nama genocide, perpetrated by German colonial forces between 1904 and 1908. During this period, tens of thousands of Herero and Nama people were killed through mass executions, forced displacement, and starvation.
Namibia to hold first official commemoration of german clonial-era genocide

Namibia to hold first official commemoration of german clonial-era genocide | Africanews
The upcoming commemoration is seen as a significant step in Namibia's efforts to acknowledge and remember this painful chapter of its history.

This https://arxiv.org/abs/1908.03249 has been replaced.
link: https://scholar.google.com/scholar?q=a

Pairwise Rational Points on a Parabola
This paper presents a solution to the following open problem in Number Theory and Geometry: How many points can you find on the (half) parabola $y=x^2$, $x>0$, so that the distance between any pair of them is rational? This problem sounds like a geometry problem, but it is likely to require techniques in number theory. That's because, to determine if the distance between (a,b) and (s,t) is rational, you need to test whether $(a-s)^2$ + $(b-t)^2$ is the square of a rational number...and such que…