Tootfinder

Unser zweierlei Maß bei #Enteignung:
Super böse, wenn damit sichere Radwege gebaut werden. Privateigentum ist dann ein hohes Gut.
Super toll, wenn man damit auf der grünen Wiese Neubaugebiete erschließen will.
Im Ort Rastorf beschließt der Rat aus zwei lokalen Listen und CDU einstimmig bei einer Enthaltung ein Enteignungsverfahren, um ein Neubaugebiet zu erschließen, obwohl di…

Enteignung in Rastorf? „Selbst wenn ich 80.000 Euro bekäme, ich wäre nicht käuflich“
Silke Wilde soll ihr Grundstück verkaufen. Die Rastorferin besitzt 267 Quadratmeter auf dem Düsternbrook, über den die Gemeinde ein Baugebiet erschließen möchte. Doch Silke Wilde wehrt sich wie eine Löwin – auch gegen eine mögliche Enteignung.

On topology and singularities of quadrature domains
Rashmita, Sabyasachi Mukherjee
https://arxiv.org/abs/2509.21468 https://arxiv.org/pdf/2509.21468…

On topology and singularities of quadrature domains
We prove a linear upper bound for the number of singular points on the boundary of a quadrature domain, improving a previously known quadratic bound due to Gustafsson \cite{Gus88}. This linear upper bound on the number of boundary double points also strengthens the bound on the connectivity (i.e., the number of complementary components) of a quadrature domain given by Lee and Makarov \cite{LM16}. Our proofs use conformal dynamics and hyperbolic geometry arguments. Finally, we introduce a new dy…

Quadratic Programming Approach for Nash Equilibrium Computation in Multiplayer Imperfect-Information Games
Sam Ganzfried
https://arxiv.org/abs/2509.25618 https://

Quadratic Programming Approach for Nash Equilibrium Computation in Multiplayer Imperfect-Information Games
There has been significant recent progress in algorithms for approximation of Nash equilibrium in large two-player zero-sum imperfect-information games and exact computation of Nash equilibrium in multiplayer strategic-form games. While counterfactual regret minimization and fictitious play are scalable to large games and have convergence guarantees in two-player zero-sum games, they do not guarantee convergence to Nash equilibrium in multiplayer games. We present an approach for exact computat…

Exact rate of convergence for the empirical measure of a subordinated process in $p$-Wasserstein distance
Ren\'e L. Schilling, Bingyao Wu
https://arxiv.org/abs/2509.26188 ht…

Exact rate of convergence for the empirical measure of a subordinated process in $p$-Wasserstein distance
We establish exact rates of convergence in the $p$-Wasserstein distance for the empirical measure of a class of non-symmetric jump processes, which are subordinated to a diffusion process on a compact Riemannian manifold. For the quadratic Wasserstein distance, we determine the renormalization limit. We extend the main results of \cite{WW} and \cite{WWZ}. Our method uses two key elements: a Bernstein-type inequality for the subordinated process and the PDE approach established in \cite{AMB}

Inducing macroscopic cat states of nonequilibrium electrons via cat-state light irradiation and projective measurements
Shohei Imai
https://arxiv.org/abs/2508.11769 https://

Inducing macroscopic cat states of nonequilibrium electrons via cat-state light irradiation and projective measurements
We show that projective measurements on quantum light can induce macroscopic cat states in many-electron systems driven by large-amplitude cat-state light. Here we investigate the quantum dynamics of N independent two-level electrons interacting with Schrödinger cat or kitten states of light. Without measurement, a macroscopic cat state of electrons appears only in an ultrashort time window. In contrast, we demonstrate that photon-number parity or quadrature projective measurements can restore…

On a non-abelian analogue of a conjecture of Michael Stoll
L. Alexander Betts
https://arxiv.org/abs/2508.19947 https://arxiv.org/pdf/2508.19947

On a non-abelian analogue of a conjecture of Michael Stoll
We formulate a non-abelian generalisation of a conjecture of Stoll, which conjecturally describes the structure of the loci cut out by Kim's method of non-abelian Chabauty. We prove the rank 0 quadratic case of this conjecture, which in particular determines the structure of the quadratic Chabauty locus for once-punctured elliptic curves of rank 0. The proof involves using a variant of the geometric quadratic Chabauty method of Edixhoven and Lido to reduce to an unlikely intersections problem, …

On the generation of free-surface waves by instabilities in quadratic shear flows
Harishankar Muppirala, Ramana Patibandla, Anubhab Roy
https://arxiv.org/abs/2508.20251 https://…

On the generation of free-surface waves by instabilities in quadratic shear flows
This paper investigates the generation of free-surface waves in a liquid layer driven by linear instabilities in Couette-Poiseuille (quadratic) shear flows. The base velocity profiles are characterized by a curvature parameter, and two-dimensional viscous and inviscid perturbations are analyzed across a wide parameter space of curvature, wavenumber, and Reynolds number, for fixed Froude and Bond numbers. In the inviscid limit, analytical solutions of the Rayleigh equation reveal that velocity p…

Implicit Communication in Linear Quadratic Gaussian Control Systems
Gongpu Chen, Deniz Gunduz
https://arxiv.org/abs/2509.16146 https://arxiv.org/pdf/2509.1…

Implicit Communication in Linear Quadratic Gaussian Control Systems
This paper studies implicit communication in linear quadratic Gaussian control systems. We show that the control system itself can serve as an implicit communication channel, enabling the controller to transmit messages through its inputs to a receiver that observes the system state. This communication is considered implicit because (i) no explicit communication channels are needed; and (ii) information is transmitted while simultaneously fulfilling the controller's primary objective--maintaini…

Linear Convergence of a Unified Primal--Dual Algorithm for Convex--Concave Saddle Point Problems with Quadratic Growth
Cody Melcher, Afrooz Jalilzadeh, Erfan Yazdandoost Hamedani
https://arxiv.org/abs/2510.11990

Linear Convergence of a Unified Primal--Dual Algorithm for Convex--Concave Saddle Point Problems with Quadratic Growth
In this paper, we study saddle point (SP) problems, focusing on convex-concave optimization involving functions that satisfy either two-sided quadratic functional growth (QFG) or two-sided quadratic gradient growth (QGG)--novel conditions tailored specifically for SP problems as extensions of quadratic growth conditions in minimization. These conditions relax the traditional requirement of strong convexity-strong concavity, thereby encompassing a broader class of problems. We propose a generali…

SincQDR-VAD: A Noise-Robust Voice Activity Detection Framework Leveraging Learnable Filters and Ranking-Aware Optimization
Chien-Chun Wang, En-Lun Yu, Jeih-Weih Hung, Shih-Chieh Huang, Berlin Chen
https://arxiv.org/abs/2508.20885

SincQDR-VAD: A Noise-Robust Voice Activity Detection Framework Leveraging Learnable Filters and Ranking-Aware Optimization
Voice activity detection (VAD) is essential for speech-driven applications, but remains far from perfect in noisy and resource-limited environments. Existing methods often lack robustness to noise, and their frame-wise classification losses are only loosely coupled with the evaluation metric of VAD. To address these challenges, we propose SincQDR-VAD, a compact and robust framework that combines a Sinc-extractor front-end with a novel quadratic disparity ranking loss. The Sinc-extractor uses le…