Tootfinder

Zapytaliśmy o miliardowe inwestycje Google w Polsce - Sieć Obywatelska Watchdog
Od @…
https://siecobywatelska.pl/zapytalismy-o-mil…

Existence and multiplicity of normalized solutions for the generalized Kadomtsev-Petviashvili equation in $\mathbb{R}^2$
Claudianor O. Alves, Rui Ding, Chao Ji
https://arxiv.org/abs/2506.04967

Existence and multiplicity of normalized solutions for the generalized Kadomtsev-Petviashvili equation in $\mathbb{R}^2$
In this paper, we study the existence and {multiplicity} of nontrivial solitary waves for the generalized Kadomtsev-Petviashvili equation with prescribed {$L^2$-norm} \begin{equation*}\label{Equation1} \left\{\begin{array}{l} \left(-u_{x x}+D_x^{-2} u_{y y}+λu-f(u)\right)_x=0,{\quad x \in \mathbb{R}^2, } \\[10pt] \displaystyle \int_{\mathbb{R}^2}u^2 d x=a^2, \end{array}\right.%\tag{$\mathscr E_λ$} \end{equation*} where $a>0$ and $λ\in \mathbb{R}$ is an unknown parameter that appears …

Scientists Capture Sharpest Images Ever of Sun's Corona | PetaPixel https://petapixel.com/2025/05/30/scientists-capture-sharpest-images-ever-of-suns-corona/
There's video in there you might want to full-screen.

Scientists Capture Sharpest Images Ever of Sun's Corona
You've never seen the Sun like this.

This https://arxiv.org/abs/2501.18787 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Quantitative Derivation of the Two-Component Gross--Pitaevskii Equation in the Hard-Core Limit with Uniform-in-Time Convergence Rate
We derive the time-dependent two-component Gross--Pitaevskii (GP) equation as an effective description of the dynamics of a dilute two-component Bose gas near its ground state, which exhibits a two-component Bose-Einstein condensate, in the GP limit. Our main result establishes a uniform-in-time bound on the convergence rate between the many-body dynamics and the effective description, explicitly quantified in terms of the particle number $N$, and also implies a uniform-in-time bound for the on…

heise | Multitalent Vorschau: Was Apples Preview-App für macOS alles kann
Die Standard-App Vorschau auf dem Mac kann mehr als nur Bilder und PDFs anzeigen. Entdecken Sie, wie Sie Formulare ausfüllen, Inhalte ergänzen oder schwärzen.

https://petapixel.com/2025/06/27/denmark-gives-people-copyright-over-their-own-faces-to-fight-deepfakes/

Denmark Gives People Copyright Over Their Own Faces to Fight Deepfakes
Everybody has the right to their own body.

Rxiv-Maker: An Automated Template Engine for Streamlined Scientific Publications
Bruno M. Saraiva, Guillaume Jaquemet, Ricardo Henriques
https://arxiv.org/abs/2508.00836 https:/…

Rxiv-Maker: An Automated Template Engine for Streamlined Scientific Publications
Scientific publishing increasingly relies on preprint servers for rapid dissemination, yet researchers often struggle with manuscript preparation and quality control. Here we present Rxiv-Maker, a GitHub-native framework that converts markdown content to publication-ready PDFs through automated LaTeX processing. The system addresses reproducibility challenges in computational biology and imaging research by treating manuscripts as executable outputs rather than static documents. Rxiv-Maker inte…

Mapping Parton Distributions of Hadrons with Lattice QCD
Huey-Wen Lin
https://arxiv.org/abs/2506.05025 https://arxiv.org/pdf/2506.050…

Mapping Parton Distributions of Hadrons with Lattice QCD
The strong force which binds hadrons is described by the theory of quantum chromodynamics (QCD). Determining the character and manifestations of QCD is one of the most important and challenging outstanding issues necessary for a comprehensive understanding of the structure of hadrons. Within the context of the QCD parton picture, the parton distribution functions (PDFs) have been remarkably successful in describing a wide variety of processes. However, these PDFs have generally been confined to…

Tensor network methods for the Gross-Pitaevskii equation on fine grids
Ryan J. J. Connor, Callum W. Duncan, Andrew J. Daley
https://arxiv.org/abs/2507.01149

Tensor network methods for the Gross-Pitaevskii equation on fine grids
The Gross-Pitaevskii equation and its generalisations to dissipative and dipolar gases have been very useful in describing dynamics of cold atomic gases, as well as polaritons and other nonlinear systems. For some of these applications the numerically accessible grid spacing can become a limiting factor, especially in describing turbulent dynamics and short-range effects of dipole-dipole interactions. We explore the application of tensor networks to these systems, where (in analogy to related w…

A clear #sunset on 29 June in Bochum, Germany - with two #sunspots quite evident at times and a strong #GreenRim near the end of the show: more timesteps in https://www.facebook.com/dan.fischer.393/posts/pfbid0vbP2AxckiSgX6hjVwNxJCuJ49mvcqMrJnP3EfDSjnzBKaJKfRnSTuYtzMnUm4Mrjl