Tootfinder

Star Wars Actor Kenneth Colley, Who Played Admiral Piett in The Empire Strikes Back and Return of the Jedi, Has Died Aged 87 After Contracting Covid and Developing Pneumonia - IGN
https://w…

Star Wars Actor Kenneth Colley, Who Played Admiral Piett in The Empire Strikes Back and Return of the Jedi, Has Died Aged 87 After Contracting Covid and Developing Pneumonia - IGN
Star Wars actor Kenneth Colley, who played Admiral Piett in The Empire Strikes Back and Return of the Jedi, has died aged 87 after contracting Covid and developing pneumonia.

How Trump's America mirrors the Gilded Age of robber barons
Fortunes built on dominant positions,
even outright monopolies;
a society in which 1% of the population held 50% of the country's wealth.
Among the most enthusiastic admirers of this turn-of-the-century era is none other than Donald Trump

How Trump's America mirrors the Gilded Age of robber barons
Fortunes built on dominant positions, even outright monopolies; a society in which 1% of the population held 50% of the country's wealth. Among the most enthusiastic admirers of this turn-of-the-century era is none other than Donald Trump.

On generation by triality automorphisms
Danila O. Revin, Andrei V. Zavarnitsine
https://arxiv.org/abs/2508.02277 https://arxiv.org/pdf/2508.02277

On generation by triality automorphisms
We clarify the structure of subgroups generated by conjugate graph automorphisms of order $3$ of $O_8^+(2)$ and $O_8^+(3)$. As a result, we obtain a correction to a paper by S. Guest which, in turn, plays an important role in proving the solvable analogue of the Baer--Suzuki theorem.

Die USA wollen das nächste große Ding im All: Ein Atomkraftwerk auf dem Mond und eine neue Raumstation könnten schon bald Realität werden... 🌕⚛️
Zum Artikel: https://heise.de/-10509451?wt_mc=sm.red.ho.mastodon.mastodon.md_beitra…

Dutch far-right Wilders (Putin-Orbšn-Trump admirer) presents his repugnant, medieval party platform for the October elections here.
If we vote for him, we'll get young, blonde, blue-eyed, women. If we vote for the social-democrats, we'll get elderly, angry, ugly, Muslim ladies.
https://masto…

Erik Jonker (@ErikJonker@mastodon.social)
Attached: 1 image Wilders wil aandacht en ophef creëren, toch vind ik dat we verontwaardigd moeten blijven over dit soort puur fascistische uitingen. #politiek #wilders #fascisme #pvv

A Real K3 Automorphism with Most of Its Entropy in the Real Part
Ethan Cohen
https://arxiv.org/abs/2506.03479 https://arxiv.org/pdf/2…

A Real K3 Automorphism with Most of Its Entropy in the Real Part
This article describes an example of a real projective K3 surface admitting a real automorphism $f$ satisfying $h_{top}(f, X(\mathbb{C})) < 2 h_{top}(f, X(\mathbb{R}))$. The example presented is a $(2,2,2)$-surface in $\mathbb{P}^1 \times \mathbb{P}^1 \times \mathbb{P}^1$ given by the vanishing set of $(1 + x^2)(1 + y^2)(1 + z^2) + 10xyz - 2$, first considered by McMullen. Along the way, we develop an ad hoc shadowing lemma for $C^2$ (real) surface diffeomorphisms, and apply it to estimate the …

Quantum symmetry of $3$-transitive graphs
Simon Schmidt, Makoto Yamashita
https://arxiv.org/abs/2508.02562 https://arxiv.org/pdf/2508.02562

Quantum symmetry of $3$-transitive graphs
We study the quantum automorphism group of $3$-transitive graphs in this article. Those are highly symmetric graphs that were classified by Cameron and Macpherson in 1985, and we compute the quantum automorphism group of all such graphs, excluding the orthogonal graphs $\mathrm{O}^-(6,q)$ for $q>3$. We show that there is no quantum symmetry for the McLaughlin graph and the orthogonal graphs $\mathrm{O}^-(6,q)$ with $q = 2, 3$, while that the quantum automorphism group of the affine polar graphs…

This https://arxiv.org/abs/2407.09997 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

The most symmetric smooth cubic surface
In this paper for any field of characteristic different from 2 we find the largest automorphism group of a smooth cubic surface over this field. Moreover, we prove that for a given field a smooth cubic surface with the largest automorphism group is unique up to isomorphism.

Irreducible finite-index representations of automorphism groups of trees
Federico Viola
https://arxiv.org/abs/2508.02367 https://arxiv.org/pdf/2508.02367…

Irreducible finite-index representations of automorphism groups of trees
We consider a locally finite tree T where every vertex has degree >= 3, and a closed noncompact subgroup G of the automorphism group Aut(T), with Tits' independence property (P) and with transitive action on the boundary of the tree. We show that G does not have continuous irreducible representations to a locally convex topological vector space over R, C or H that preserve a continuous nondegenerate sesquilinear form of index p > 1. As the representations of index 1 are already classified, this…

Atomreaktor für US-Armee: BWXT arbeitet an 1,5-MW-Minireaktor als Demonstrator
Ein transportabler Minireaktor soll die Stromversorgung militärischer US-Stützpunkte sicherstellen. BWXT arbeitet mit Rolls-Royce an einem Prototypen.