Tootfinder

Real Nullstellensatz for 2-step nilpotent Lie algebras
Philipp Schmitt, Matthias Sch\"otz
https://arxiv.org/abs/2403.06773 https://

Real Nullstellensatz for 2-step nilpotent Lie algebras
We prove a noncommutative real Nullstellensatz for 2-step nilpotent Lie algebras that extends the classical, commutative real Nullstellensatz as follows: Instead of the real polynomial algebra $\mathbb R[x_1, \dots, x_d]$ we consider the universal enveloping *-algebra of a 2-step nilpotent real Lie algebra (i.e. the universal enveloping algebra of its complexification with the canonical *-involution). Evaluation at points of $\mathbb R^d$ is then generalized to evaluation through integrable *-r…

Welche Überraschung … https://www.economist.com/europe/2024/02/12/france-uncovers-a-vast-russian-disinformation-campaign-in-europe

This https://arxiv.org/abs/2207.03979 has been replaced.
link: https://scholar.google.com/scholar?q=a

Analytic Nullstellensätze and the model theory of valued fields
We present a uniform framework for establishing Nullstellensätze for power series rings using quantifier elimination results for valued fields. As an application we obtain Nullstellensätze for $p$-adic power series (both formal and convergent) analogous to Rückert's complex and Risler's real Nullstellensatz, as well as a $p$-adic analytic version of Hilbert's 17th Problem. Analogous statements for restricted power series, both real and $p$-adic, are also considered.

Dimension-free matricial Nullstellens\"atze for noncommutative polynomials
Jurij Vol\v{c}i\v{c}
https://arxiv.org/abs/2403.06270 https://

Dimension-free matricial Nullstellensätze for noncommutative polynomials
Hilbert's Nullstellensatz is one of the most fundamental correspondences between algebra and geometry, and has inspired a plethora of noncommutative analogs. In last two decades, there has been an increased interest in understanding vanishing sets of polynomials in several matrix variables without restricting the matrix size, prompted by developments in noncommutative function theory, control systems, operator algebras, and quantum information theory. The emerging results vary according to the …

Welche Überraschung … https://www.economist.com/europe/2024/02/12/france-uncovers-a-vast-russian-disinformation-campaign-in-europe

Könnte das jemand den Kantonsverwaltungen und den Zuständigen in Bern näherbringen? https://netzpolitik.org/2024/microsoft-365-eu-kommission-darf-keine-daten-mehr-in-usa-uebertragen/

The Great Kate Debate. Oder auch: was eine Analyse eines Bildes alles rausfinden kann.
https://www.hackerfactor.com/blog/index.php?/archives/1025-The-Great-Kate-Debate.html

Na toll. Nicht.
So wird das nix mit der Reduktion des Flugverkehrs.
From: @…
https://mastodon.online/@bahnoev/112257391928860185

Unternehmen verspricht in der Datenschutzerklärung eine Flasche Wein, und muss drei Monate warten, bis jemand die Erklärung auch wirklich liest (bzw. die Flasche einfordert).
https://www.golem.de/news/in-datenschutzerkla…

"Solar Storm Knocks Out Farmers' Tractor GPS Systems During Peak Planting Season"
"Solar storm" tönt ja eher nach einer #BOFH-Ausrede, aber da Traktoren heute ja auch Computer auf Rädern sind ...