Tootfinder

Hungarian Milspace Kft helping Russian arms manufacturers evade international sanctions (DOCUMENT): https://benborges.xyz/2025/07/30/hungarian-milspace-kft-helping-russian.html

Por fin va a llegar el metro a Lo Espejo y también al aeropuerto. 👇🏻
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Boric anuncia que Metro llegarš al aeropuerto, Lo Espejo y Maipú
https://www.malaespinacheck.cl/pais/2025/06/01/metro-aeropuerto-lo-espejo-maipu/

Des trains stationnent entre Porte de Vanves et Châtillon-Montrouge en raison d'un incident nécessitant l’intervention du conducteur Š Malakoff - Rue Etienne Dolet .
🤖 04/07 14:46

A variable dimension sketching strategy for nonlinear least-squares
Stefania Bellavia, Greta Malaspina, Benedetta Morini
https://arxiv.org/abs/2506.03965 h…

A variable dimension sketching strategy for nonlinear least-squares
We present a stochastic inexact Gauss-Newton method for the solution of nonlinear least-squares. To reduce the computational cost with respect to the classical method, at each iteration the proposed algorithm approximately minimizes the local model on a random subspace. The dimension of the subspace varies along the iterations, and two strategies are considered for its update: the first is based solely on the Armijo condition, the latter is based on information from the true Gauss-Newton model.…

From Dynamic Programs to Greedy Algorithms
Dieter van Melkebeek
https://arxiv.org/abs/2508.00776 https://arxiv.org/pdf/2508.00776

From Dynamic Programs to Greedy Algorithms
We show for several computational problems how classical greedy algorithms for special cases can be derived in a simple way from dynamic programs for the general case: interval scheduling (restricted to unit weights), knapsack (restricted to unit values), and shortest paths (restricted to nonnegative edge lengths). Conceptually, we repeatedly expand the Bellman equations underlying the dynamic program and use straightforward monotonicity properties to figure out which terms yield the optimal va…

Canonical parameters on a surface in $\mathbb R^4$
Ognian Kassabov, Velichka Milousheva
https://arxiv.org/abs/2508.00148 https://arxiv.org/pdf/2508.00148…

Canonical parameters on a surface in $\mathbb R^4$
In the present paper, we study surfaces in the four-dimensional Euclidean space $\mathbb{R}^4$. We define special principal parameters, which we call canonical, on each surface without minimal points, and prove that the surface admits (at least locally) canonical principal parameters. They can be considered as a generalization of the canonical parameters for minimal surfaces and the canonical parameters for surfaces with parallel normalized mean curvature vector field introduced before. We prov…

StARS DCM: A Sleep Stage-Decoding Forehead EEG Patch for Real-time Modulation of Sleep Physiology
William G. Coon, Preston Peranich, Griffin Milsap
https://arxiv.org/abs/2506.03442

StARS DCM: A Sleep Stage-Decoding Forehead EEG Patch for Real-time Modulation of Sleep Physiology
The System to Augment Restorative Sleep (StARS) is a modular hardware/software platform designed for real-time sleep monitoring and intervention. Utilizing the compact DCM biosignal device, StARS captures electrophysiological signals (EEG, EMG, EOG) and synchronizes sensor data using the ezmsg real-time software framework. StARS supports interventions such as closed-loop auditory stimulation and dynamic thermal modulation guided by sleep-stage decoding via advanced neural network models and tra…

Active galactic nuclei through the prism of galaxy clusters: bounds on axion-like particles
Denys Malyshev, Lidiia Zadorozhna, Yuriy Bidasyuk, Andrea Santangelo, Oleg Ruchayskiy
https://arxiv.org/abs/2506.02848

Active galactic nuclei through the prism of galaxy clusters: bounds on axion-like particles
Hypothetical axion-like particles (ALPs) are of interest because of their potential to act as dark matter or to reveal information about yet undiscovered fundamental constituents of matter. Such particles can be created when photons traverse regions of magnetic fields. The conversion probability depends on both the magnetic field parameters and photon energy, leading to multiple spectral absorption features as light passes through magnetized regions. Traditionally, astrophysical searches have…

My current bike stats... on my way to 1,000 miles this year. (And hopefully many more!)
(code is here: #bikeTooter

🇺🇦 Auf radioeins läuft...
Chefket:
🎵 Dr Dirican
#NowPlaying #Chefket
https://open.spotify.com/track/5mLQbnkQNIMaEPLwpEjxyD