Tootfinder

Local-in-Time Conservative Binary Dynamics at Fifth Post-Minkowskian and First Self-Force Orders
Christoph Dlapa, Gregor K\"alin, Zhengwen Liu, Rafael A. Porto
https://arxiv.org/abs/2506.20665

Local-in-Time Conservative Binary Dynamics at Fifth Post-Minkowskian and First Self-Force Orders
We report the local-in-time conservative dynamics of nonspinning binary systems at fifth Post-Minkowskian (5PM) and first self-force (1SF) orders. This follows from an explicit calculation of the 5PM/1SF nonlocal-in-time tail-type contribution to the deflection angle via worldline effective field theory techniques. Proceeding as in [2403.04853], we subtract the nonlocal tail terms from the result in [2403.07781] and reconstruct a local-in-time Hamiltonian in isotropic gauge -- valid for generic…

Some Friday Night ÖPNV trivia: What local and regional trains in Europe have First Class? Only trains where Interrail is valid count. #BahnBubble
I’ll start with the Leonardo Express, Roma Termini–Fiumicino Aeroporto, which has *only* First Class. (Which comfort-wise is second class, though.)

Local Type Inference for Context-Free Session Types
Bernardo Almeida (LASIGE, Faculty of Sciences, University of Lisbon, Portugal), Andreia Mordido (LASIGE, Faculty of Sciences, University of Lisbon, Portugal), Vasco T. Vasconcelos (LASIGE, Faculty of Sciences, University of Lisbon, Portugal)
https://arxiv.org/abs/2505.20855

Local Type Inference for Context-Free Session Types
We address the problem of local type inference for a language based on System F with context-free session types. We present an algorithm that leverages the bidirectional type checking approach to propagate type information, enabling first class polymorphism while addressing the intricacies brought about by the sequential composition operator and type equivalence. The algorithm improves the language's usability by eliminating the need for type annotations at type application sites.

Nice - Emile Donovan talks to a local (to Ōtautahi) tech legend, Dr Tim Bell (U Canterbury CompSci lecturer) about teaching kids about computers https://www.rnz.co.nz/national/programmes/nights/audio/20…

MCEDA buys The Tuskegee News to prevent the Alabama city from becoming a news desert, in what seems to be a first for a US economic development agency (Sarah Clifton/Montgomery Advertiser)
https://www.

160-year-old Tuskegee newspaper to remain in business after purchase by Macon County
"It's about preserving the voice of a community and protecting our momentum and economic development."

Morning peeps! I think my first job today will be to head into the centre of town and buy some nice coffee beans from the local indie roastery. The ones I bought from Nero the other day are sketchy at best 😬
Have a great day!
#Morning #Coffee #Beans

A Complete Loss Landscape Analysis of Regularized Deep Matrix Factorization
Po Chen, Rujun Jiang, Peng Wang
https://arxiv.org/abs/2506.20344 https://

A Complete Loss Landscape Analysis of Regularized Deep Matrix Factorization
Despite its wide range of applications across various domains, the optimization foundations of deep matrix factorization (DMF) remain largely open. In this work, we aim to fill this gap by conducting a comprehensive study of the loss landscape of the regularized DMF problem. Toward this goal, we first provide a closed-form expression of all critical points. Building on this, we establish precise conditions under which a critical point is a local minimizer, a global minimizer, a strict saddle po…

The Relationship between Cognition and Computation: "Global-first" Cognition versus Local-first Computation
Lin Chen
https://arxiv.org/abs/2506.17970

The Relationship between Cognition and Computation: "Global-first" Cognition versus Local-first Computation
What fundamental research questions are essential for advancing toward brain-like AI or AGI (Artificial General Intelligence) capable of performing any intellectual task a human can? Should it be something like the Turing machine (1936), which answers the question "What is computation?" and lays the foundation for the entire field of computer science? Or should it be something like Shannon's mathematical theory of communication (1948), which answers the question "What is information?" and forms…

Boron Fullerenes: From Theoretical Predictions to Experimental Reality
Nevill Gonzalez Szwacki
https://arxiv.org/abs/2506.20032 https://

Boron Fullerenes: From Theoretical Predictions to Experimental Reality
We present a comprehensive first-principles investigation of boron fullerenes and two-dimensional boron sheets, unified under a coordination-based framework. By classifying over a dozen boron nanostructures, including B$_{12}$, B$_{40}$, B$_{65}$, B$_{80}$, and B$_{92}$, according to their local atomic environments (4-, 5-, and 6-fold coordination), we identify clear trends in structural stability, electronic properties, and magnetism. A universal energetic scaling relation $E_c(n) = a/n^b + E_…

An H$\alpha$ Cloud in the HI Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1-m Telescope
Cheng Cheng, Jia-Sheng Huang, Peng Wei, Ali Esamdin, Guojie Feng, Zhi-Xiang Zhang, Haojing Yan, Wei Du, Pei Zuo, Zi-Jian Li, Gustavo Orellana, Letian Wang, Yong Wang, Abdusamatjan Iskandar, Shahidin Yaqup
https://

An H$α$ Cloud in the HI Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1-m Telescope
We present first-light deep H$α$ imaging taken with the Nanshan 1-meter wide-field telescope on the local galaxy NGC 4258, alongside archival data from Hubble Space telescope (HST), Westerbork Synthesis Radio Telescope, and The Dark Energy Camera Legacy Survey. The H$α$ image shows ongoing star formation not only inside the galaxy but also in an HI cloud in the eastern HI tail, which is roughly 16 kpc away from the main galaxy. The HST images reveal several ultra-blue compact objects ($\rm F5…

In Windows 11's Kernel32.dll (well, KernelBase.dll) the check for "twain_32.dll" is still there. I wonder when it was the first time that thing was put there.

Continuous Indexed Points for Multivariate Volume Visualization
Liang Zhou, Xinyi Gou, Daniel Weiskopf
https://arxiv.org/abs/2506.19400 https://

Continuous Indexed Points for Multivariate Volume Visualization
We introduce continuous indexed points for improved multivariate volume visualization. Indexed points represent linear structures in parallel coordinates and can be used to encode local correlation of multivariate (including multifield, multifaceted, and multiattribute) volume data. First, we perform local linear fitting in the spatial neighborhood of each volume sample using principal component analysis, accelerated by hierarchical spatial data structures. This local linear information is then…

Framework for phase transitions between the Maxwell and Gibbs constructions at finite temperature
Constantinos Constantinou, Mirco Guerrini, Tianqi Zhao, Sophia Han, Madappa Prakash
https://arxiv.org/abs/2506.20418

Framework for phase transitions between the Maxwell and Gibbs constructions at finite temperature
The characteristics of the hadron-to-quark first-order phase transition differ depending on whether charge neutrality is locally or globally fulfilled. In $β$-equilibrated matter, these two possibilities correspond to the Maxwell and Gibbs constructions. Recently, we presented a new framework in which a continuously-varying parameter allows one to describe a first-order phase transition in intermediate scenarios to the two extremes of fully local and fully global charge neutrality. In this wor…

Berezin-Li-Yau inequality for mixed local-nonlocal Dirichlet-Laplacian
Aidyn Kassymov, Berikbol T. Torebek
https://arxiv.org/abs/2506.17780 https://…

Berezin-Li-Yau inequality for mixed local-nonlocal Dirichlet-Laplacian
In this paper, we consider an eigenvalue problem for mixed local-nonlocal Laplacian $$\mathcal{L}^{a,b}_{\Om}:=-aΔ+b(-Δ)^s,\,a>0,\,b\in\mathbb{R},\,s\in (0,1),$$ with Dirichlet boundary conditions. First, the case $a>0$ and $b>0$ is considered and the Berezin-Li-Yau inequality (lower bounds of the sum of eigenvalues) is established. This inequality is characterised as the maximum of the classical and fractional versions of the Berezin-Li-Yau inequality, and, in particular, yields both the cla…

This https://arxiv.org/abs/2505.15461 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Direct Estimation of Earthquake Source Properties from a Single CCTV Camera
We present the first direct measurement of the slip-rate function during a natural coseismic rupture, recorded during the 28 March 2025, Mw 7.7 Mandalay earthquake (Myanmar). This measurement was made on a video footage of the surface rupture captured by a security camera located only meters away from the fault trace. Using direct image analysis, we measured the relative slip at each time step and deduced the slip rate. Our results show a local slip duration of 1.3 s, and that the surface slip …

First round PI workup on the switch line card is done.
All of the other rails are fine, the only one with any significant issues of concern is 1V0 which I am suspecting might be a nothingburger (test point too close to the DC-DC so the local bypass caps dont have much of an impact).
Gonna solder a probe on to get a measurement at the actual BGA vias and see how noisy the rail is there, then probably put some diff probes on the QSGMII while I've got the thing decabled.

FRB 20250316A: A Brilliant and Nearby One-Off Fast Radio Burst Localized to 13 parsec Precision
FRB Collaboration, Thomas C. Abbott, Daniel Amouyal, Shion E. Andrew, Kevin Bandura, Mohit Bhardwaj, Kalyani Bhopi, Yash Bhusare, Charanjot Brar, Alice Cai, Tomas Cassanelli, Shami Chatterjee, Jean-Fran\c{c}ois Cliche, Amanda M. Cook, Alice P. Curtin, Evan Davies-Velie, Matt Dobbs, Fengqiu Adam Dong, Yuxin Dong, Gwendolyn Eadie, Tarraneh Eftekhari, Wen-fai Fong, Emmanuel Fonseca, B. M. Gaens…

FRB 20250316A: A Brilliant and Nearby One-Off Fast Radio Burst Localized to 13 parsec Precision
Precise localizations of a small number of repeating fast radio bursts (FRBs) using very long baseline interferometry (VLBI) have enabled multiwavelength follow-up observations revealing diverse local environments. However, the 2--3\% of FRB sources that are observed to repeat may not be representative of the full population. Here we use the VLBI capabilities of the full CHIME Outriggers array for the first time to localize a nearby (40 Mpc), bright (kJy), and apparently one-off FRB source, FRB…

‘I wish I could turn back the hands of time’: Ruggs speaks after fatal Las Vegas DUI crash https://www.reviewjournal.com/local/local-las-vegas/i-wish-i-could-turn-back-the-hands-of-time-ruggs…

On complete integral closedness of the $p$-adic completion of absolute integral closure
Raymond Heitmann, Linquan Ma
https://arxiv.org/abs/2506.19148 https…

On complete integral closedness of the $p$-adic completion of absolute integral closure
Fix a prime $p$ and let $(R,\mathfrak{m})$ be a Noetherian complete local domain of mixed characteristic $(0,p)$ with fraction field $K$. Let $R^+$ denote the absolute integral closure of $R$, which is the integral closure of $R$ in an algebraic closure $\overline{K}$ of $K$. The first author has shown that $\widehat{R^+}$, the $p$-adic completion of $R^+$, is an integral domain. In this paper, we prove that $\widehat{R^+}$ is completely integrally closed in $\widehat{R^+}\otimes_{R^+}\overline…

The Hiraga-Ichino-Ikeda Conjecture for Principal Series of Split p-adic Groups
Giulio Ricci
https://arxiv.org/abs/2506.19619 https://…

The Hiraga-Ichino-Ikeda Conjecture for Principal Series of Split p-adic Groups
Given a $p$-adic connected split reductive group $\mathcal{G},$ we use the local Langlands correspondence as defined by Reeder and by Aubert, Baum, Plymen and Solleveld, to prove the HII conjecture for irreducible discrete series representations contained in a principal series of $\mathcal{G}$. We verify the predicted formula relating the formal degree of such representations to the adjoint $γ$-factor of their associated Langlands parameter. First, we prove it under the assumption that the cen…

The hyperbolic lattice counting problem in large dimensions
Christos Katsivelos
https://arxiv.org/abs/2506.17753 https://arxiv.org/pd…

The hyperbolic lattice counting problem in large dimensions
For $n\geq 3$ and $Γ$ a cocompact lattice acting on the hyperbolic space $\mathbb{H}^n$, we investigate the average behaviour of the error term in the circle problem. First, we explore the local average of the error term over compact sets of $Γ\backslash\mathbb{H}^n$. Our upper bound depends on the quantum variance and the spectral exponential sums appearing in the study of the Prime geodesic theorem. We also prove $Ω$-results for the mean value and the second moment of the error term.

With RSNs weakened due to cord-cutting, a look at how the NBA and teams are handling local broadcasts, as some turn to streaming and others buy their local RSNs (Mike Vorkunov/New York Times)
https://www.nytimes.com/athletic/6299679/2

What the NBA’s new TV deal means for viewership and national, local markets
Starting next season, regional sports networks won't be able to broadcast the first round of the playoffs.

Cascade at local yield strain for silica and metallic glass
Nandlal Pingua, Himani Rautela, Roni Chatterjee, Smarajit Karmakar, Pinaki Chaudhuri, Shiladitya Sengupta
https://arxiv.org/abs/2506.17129

Cascade at local yield strain for silica and metallic glass
We report observations of unusal \emph{first} plastic events in silica and metallic glasses in the shear startup regime at applied strain two orders of magnitude smaller than yield strain. The (non-Affine) particle displacement field during these events have complex real space structure with multiple disconnected cores of high displacement appearing at the \emph{same} applied strain under athermal quasistatic simple shear deformation, and identified by a ``cell based cluster analysis'' method. …

A three-dimensional, multi-wavelength view and time-dependent analysis of the Milky Way's local ionized gas
Lewis McCallum, Kenneth Wood, Robert Benjamin, Dhanesh Krishnarao, Anna F. McLeod
https://arxiv.org/abs/2506.17689

A three-dimensional, multi-wavelength view and time-dependent analysis of the Milky Way's local ionized gas
This work is the continuation of a series attempting to characterize the local warm ionized medium through both static and time dependent simulations. We build upon our three dimensional, observationally-derived simulation of the local photoionized interstellar medium - based on static photoionization simulations constrained by 3D dust maps - to include metals required to predict collisionally excited optical and infrared emission lines, providing the first all-sky prediction of a series of lin…

"But West Virginia’s new law is unusual. Boasting the “least restrictive regulatory environment in the nation,” it prohibits local officials from having any input into where off-grid data centers go. This provision appears to be a nationwide first and is angering mayors and commissioners statewide."
From: @…

Continuous spin superparticle model
I. L. Buchbinder, S. A. Fedoruk
https://arxiv.org/abs/2506.19709 https://arxiv.org/pdf/2506.19709…

Continuous spin superparticle model
We construct a new model of a particle propagating in $4D$, ${\cal N}=1$ superspace that describes the dynamics of a continuous spin irreducible representation of the Poincaré supergroup. The model is characterized by two-component Weyl spinor additional even variables playing the role of extra coordinates. A canonical formulation, specific local fermionic $κ$-symmetry, and a compete system of bosonic and fermionic constraints are derived. All bosonic constrains are first-class, while fermion…

Detecting local topology with the spectral localizer
Alexander Cerjan, Hermann Schulz-Baldes
https://arxiv.org/abs/2506.14174 https://

Detecting local topology with the spectral localizer
The spectral localizer is a predictive framework for the computation of topological invariants of natural and artificial materials. Here, three crucial improvements on the criterion for the validity of the framework are reported: first, merely a properly defined local spectral gap of the Hamiltonian is required, second, only relative bounds on the Hamiltonian and its noncommutative derivative are relevant, and, third, the numerical constant in a tapering estimate is improved. These developments…

Unveiling the small-scale web around galaxies with miniJPAS and DESI: the role of local connectivity in star formation
Daniela Gal\'arraga-Espinosa, Guinevere Kauffmann, Silvia Bonoli, Luisa Lucie-Smith, Rosa M. Gonz\'alez Delgado, Elmo Tempel, Raul Abramo, Siddharta Gurung-L\'opez, Valerio Marra, Jailson Alcaniz, Narciso Benitez, Saulo Carneiro, Javier Cenarro, David Crist\'obal-Hornillos, Renato Dupke, Alessandro Ederoclite, Antonio Hern\'an-Caballero, Carlos Hern…

Unveiling the small-scale web around galaxies with miniJPAS and DESI: the role of local connectivity in star formation
We present the first statistical observational study detecting small-scale filaments in the immediate surroundings of galaxies, i.e. the local web of galaxies. Simulations predict that cold gas, the fuel for star formation, is channeled through filamentary structures into galaxies. Yet, direct observational evidence for this process has been limited by the challenge of mapping the cosmic web at small scales. Using miniJPAS spectro-photometric data combined with spectroscopic DESI redshifts when…

Branch, or Layer? Zeroth-Order Optimization for Continual Learning of Vision-Language Models
Ziwei Liu, Borui Kang, Wei Li, Hangjie Yuan, Yanbing Yang, Wenbin Li, Jun Luo, Yifan Zhu, Tao Feng
https://arxiv.org/abs/2506.12409

Branch, or Layer? Zeroth-Order Optimization for Continual Learning of Vision-Language Models
Continual learning in vision-language models (VLMs) faces critical challenges in balancing parameter efficiency, memory consumption, and optimization stability. While First-Order (FO) optimization (e.g., SGD) dominate current approaches, their deterministic gradients often trap models in suboptimal local minima and incur substantial memory overhead. This paper pioneers a systematic exploration of Zeroth-Order (ZO) optimization for vision-language continual learning (VLCL). We first identify the…

Chiefs' Travis Kelce says returning for 2025 season 'wasn't that hard of a decision' https://www.nfl.com/news/chiefs-travis-kelce-says-returning-for-2025-season-wasn-t-that-hard-of-a-decision

I logged on to Facebook for the first time in months to read some local drama about school layoffs. I found that Facebook had made me follow both both the orange fascist and his sycophant in chief.
Fuck Zuck.

Clarifying the relation between covariantly conserved currents and Noether's theorem
Nuno Barros e S\'a, Miguel A. S. Pinto
https://arxiv.org/abs/2506.14454

Clarifying the relation between covariantly conserved currents and Noether's theorem
On one hand, proper conservation laws, that is, the existence of local functions of the fields whose divergence vanishes on-shell, are associated with global symmetries and are a consequence of Noether's first theorem. On the other hand, covariant conservation laws, i.e., the same type of laws but featuring a covariant divergence, are associated with local symmetries and are a consequence (under certain conditions) of Noether's second theorem. In this paper, we clarify under which conditions No…

Greed is slow on sparse graphs of oriented valued constraints
Artem Kaznatcheev, Sofia Vazquez Alferez
https://arxiv.org/abs/2506.11662 https://

Greed is slow on sparse graphs of oriented valued constraints
Greedy local search is especially popular for solving valued constraint satisfaction problems (VCSPs). Since any method will be slow for some VCSPs, we ask: what is the simplest VCSP on which greedy local search is slow? We construct a VCSP on 6n Boolean variables for which greedy local search takes 7(2^n - 1) steps to find the unique peak. Our VCSP is simple in two ways. First, it is very sparse: its constraint graph has pathwidth 2 and maximum degree 3. This is the simplest VCSP on which some…

A First Look at Bugs in LLM Inference Engines
Mugeng Liu, Siqi Zhong, Weichen Bi, Yixuan Zhang, Zhiyang Chen, Zhenpeng Chen, Xuanzhe Liu, Yun Ma
https://arxiv.org/abs/2506.09713

A First Look at Bugs in LLM Inference Engines
Large language model-specific inference engines (in short as \emph{LLM inference engines}) have become a fundamental component of modern AI infrastructure, enabling the deployment of LLM-powered applications (LLM apps) across cloud and local devices. Despite their critical role, LLM inference engines are prone to bugs due to the immense resource demands of LLMs and the complexities of cross-platform compatibility. However, a systematic understanding of these bugs remains lacking. To bridge this…

A semi-Lagrangian scheme for First-Order Mean Field Games based on monotone operators
Elisabetta Carlini, Valentina Coscetti
https://arxiv.org/abs/2506.10509

A semi-Lagrangian scheme for First-Order Mean Field Games based on monotone operators
We construct a semi-Lagrangian scheme for first-order, time-dependent, and non-local Mean Field Games. The convergence of the scheme to a weak solution of the system is analyzed by exploiting a key monotonicity property. To solve the resulting discrete problem, we implement a Learning Value Algorithm, prove its convergence, and propose an acceleration strategy based on a Policy iteration method. Finally, we present numerical experiments that validate the effectiveness of the proposed schemes an…

"Colombia cuts deforestation by one-third as government targets Amazon and illegal mining"
#Colombia #Trees #Deforestation

Colombia cuts deforestation by one-third as government targets Amazon and illegal mining
Colombia’s environment ministry reported a 33% drop in deforestation during the first quarter of 2025, citing coordinated enforcement efforts and strengthened partnerships with local communities.Steven Grattan reports for The Associated Press.In short:Colombia’s deforestation fell from 40,219 hectar...

Near-record #nitrate levels in Des Moines, #Iowa-area rivers threaten drinking #water... "But the officials declined to explain what they believe has caused the surge in nitrate levels, which has historically been …

River pollution threatens Des Moines, Iowa's drinking water
Local officials are warning more than half a million Iowans in the state's capital city and suburbs that near-record level of pollutants in its rivers could make drinking water dangerous if immediate steps are not taken to reduce demand. But the officials are declining to explain what they believe has caused the surge in nitrate levels, which has historically been tied to runoff from farmland draining into Des Moines-area rivers. The water utility is issuing a first-ever ban on lawn watering fo…

New Limits on Distributed Quantum Advantage: Dequantizing Linear Programs
Alkida Balliu, Corinna Coupette, Antonio Cruciani, Francesco d'Amore, Massimo Equi, Henrik Lievonen, Augusto Modanese, Dennis Olivetti, Jukka Suomela
https://arxiv.org/abs/2506.07574

New Limits on Distributed Quantum Advantage: Dequantizing Linear Programs
In this work, we give two results that put new limits on distributed quantum advantage in the context of the LOCAL model of distributed computing. First, we show that there is no distributed quantum advantage for any linear program. Put otherwise, if there is a quantum-LOCAL algorithm $\mathcal{A}$ that finds an $α$-approximation of some linear optimization problem $Π$ in $T$ communication rounds, we can construct a classical, deterministic LOCAL algorithm $\mathcal{A}'$ that finds an $α$-ap…

Provincial parks staff will be stationed at the Joffre Lakes parking lot to redirect visitors to alternate locations, such as Nairn Falls, so that the local First Nations can use their traditional lands in the absence of hordes of day trippers visiting the park’s turquoise mountain waters.
This in 2025!

SECNEURON: Reliable and Flexible Abuse Control in Local LLMs via Hybrid Neuron Encryption
Zhiqiang Wang, Haohua Du, Junyang Wang, Haifeng Sun, Kaiwen Guo, Haikuo Yu, Chao Liu, Xiang-Yang Li
https://arxiv.org/abs/2506.05242

SECNEURON: Reliable and Flexible Abuse Control in Local LLMs via Hybrid Neuron Encryption
Large language models (LLMs) with diverse capabilities are increasingly being deployed in local environments, presenting significant security and controllability challenges. These locally deployed LLMs operate outside the direct control of developers, rendering them more susceptible to abuse. Existing mitigation techniques mainly designed for cloud-based LLM services are frequently circumvented or ineffective in deployer-controlled environments. We propose SECNEURON, the first framework that se…

“‘It’s very difficult to not take corporate money … we’ve hired grant writers who have asked, “Well, how about Bank of America, how about Apple?” How about no,’ laughed Sullivan, who explained, ‘Even if a sponsor never asks you to edit any of your work, you are going to be censoring yourself, like, “If we say this, maybe they won’t give us money next year.”’”

Another eclectic collection of books has been dropped off at the local “Little Free Library” with their “please don’t sell me” stamps and QR codes to the various books pages at https://Bookwyrm.social (Fedi GR alt) & @thestorygraph.com (Black owned GR alt) so that people can read about/review the books.

Got my first call from "PECO" (local electric company) threatening to disconnect my service. I was pretty sure it was fake from the start, but when they gave me an address that 1) I haven't lived at since 2008, and 2) didn't have any utilities in my name....
Up your game, fellas...

Classically psh and pluriharmonic functions on Berkovich spaces
Walter Gubler, Joseph Rabinoff
https://arxiv.org/abs/2506.13548 https://

Classically psh and pluriharmonic functions on Berkovich spaces
First we extend the theory of subharmonic functions on smooth strictly $k$-analytic curves from Thuillier's thesis to the case of possibly singular analytic curves over a non-archimedean field. Classically psh functions are then defined as in complex geometry by using pullbacks to analytic curves (and requiring compatibility with base change). We give various properties of classically psh functions including a local and a global maximum principle. As a consequence, we show that the space of plu…

Extremal process of the local time of simple random walk on a regular tree
Yoshihiro Abe, Marek biskup
https://arxiv.org/abs/2506.09592 https://

Extremal process of the local time of simple random walk on a regular tree
We study a continuous-time simple random walk on a regular rooted tree of depth $n$ in two settings: either the walk is started from a leaf vertex and run until the tree root is first hit or it is started from the root and run until it has spent a prescribed amount of time there. In both cases we show that the extremal process associated with centered square-root local time on the leaves tends, as $n\to\infty$, to a decorated Poisson point process with a random intensity measure. While the inte…

Predictions of flow distortions inside a serpentine diffuser from large-eddy simulations
Rahul Agrawal, Chad Winkler, Sanjeeb Bose, Parviz Moin
https://arxiv.org/abs/2506.15646

Predictions of flow distortions inside a serpentine diffuser from large-eddy simulations
This work examines the flow separation and the resulting pressure distortions at the exit plane of a serpentine diffuser operating at both subsonic and transonic conditions. Wallmodeled large-eddy simulations (WMLES) using the charLES flow solver are performed at three exit-plane Mach numbers, Ma_AIP ~ {0.36, 0.46, 0.54}. First, it is shown that the onset of flow separation inside a serpentine diffuser may likely experience strong, non-local history effects. A grid refinement study consisting o…

I recorded something in the Furality Somna lobby to use in a montage and just now I realized the camera was in local photo mode and it's just first person footage of me barely looking at the camera screen 💀💀💀

"This breakthrough enables each pixel of an OLED display to simultaneously emit different sounds, essentially allowing the display to function as a multichannel speaker array"
https://www.sciencedaily.com/releases/2025/05/250521125055.htm

Yay, @… made it so :gitannex: #gitAnnex pushes the current branch first (not the git-annex or synced/* branches). This is awesome when you want to push-to-create a local repo to your @…

PoseGRAF: Geometric-Reinforced Adaptive Fusion for Monocular 3D Human Pose Estimation
Ming Xu, Xu Zhang
https://arxiv.org/abs/2506.14596 https://

PoseGRAF: Geometric-Reinforced Adaptive Fusion for Monocular 3D Human Pose Estimation
Existing monocular 3D pose estimation methods primarily rely on joint positional features, while overlooking intrinsic directional and angular correlations within the skeleton. As a result, they often produce implausible poses under joint occlusions or rapid motion changes. To address these challenges, we propose the PoseGRAF framework. We first construct a dual graph convolutional structure that separately processes joint and bone graphs, effectively capturing their local dependencies. A Cross…

Two Tiling is Undecidable
Jack Stade
https://arxiv.org/abs/2506.11628 https://arxiv.org/pdf/2506.11628…

Two Tiling is Undecidable
We show that the following problem is undecidable: given two polygonal prototiles, determine whether the plane can be tiled with rotated and translated copies of them. This improves a result of Demaine and Langerman [SoCG 2025], who showed undecidability for three tiles. Along the way, we show that tiling with one prototile is undecidable if there can be edge-to-edge matching rules. This is the first result to show undecidability for monotiling with only local matching constraints.

Some global properties of umbilic points of Willmore immersions in the $3$-sphere
Nicolas Marque, Dorian Martino
https://arxiv.org/abs/2506.10720 https://

Some global properties of umbilic points of Willmore immersions in the $3$-sphere
We study the umbilic points of Willmore surfaces in codimension 1 from the viewpoint of the conformal Gauss map. We first study the local behaviour of the conformal Gauss map near umbilic curves and prove that they are geodesics up to a conformal transformation if and only if the Willmore immersion is, up to a conformal transformation, the gluing of minimal surfaces in the 3-dimensional hyperbolic space. Then, we prove a Gauss--Bonnet formula for the conformal Gauss map of Willmore surfaces whi…

Multi-Timescale Gradient Sliding for Distributed Optimization
Junhui Zhang, Patrick Jaillet
https://arxiv.org/abs/2506.15387 https://…

Multi-Timescale Gradient Sliding for Distributed Optimization
We propose two first-order methods for convex, non-smooth, distributed optimization problems, hereafter called Multi-Timescale Gradient Sliding (MT-GS) and its accelerated variant (AMT-GS). Our MT-GS and AMT-GS can take advantage of similarities between (local) objectives to reduce the communication rounds, are flexible so that different subsets (of agents) can communicate at different, user-picked rates, and are fully deterministic. These three desirable features are achieved through a block-d…

Flowing Loops
Great Australian Pods Podcast Directory: #GreatAusPods

Flowing Loops | Great Australian Pods Podcast Directory
Podcast: Flowing Loops Host: Dan Koop Category: Arts Sub-Category: Crafts & Creativity, Local News & Stories, Places & Travel First Episode: 2024 Dan Koop and six artists have been walking and talking…

Survey: local news outlets make up 51% of INN's 500 members, digital-first outlets employ ~3,200 journalists, foundation funding is 49% of revenue, and more (INN News)
https://news.inn.org/highlights-2025-inn-index/

Increase in local members and topical news coverage: Highlights from the 2025 INN Index survey - INN News
For the first time, local news outlets make up the largest segment of the Institute for Nonprofit News’ member network, according to the latest Index survey.

This https://arxiv.org/abs/2506.00140 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csAI_…

Balancing Profit and Fairness in Risk-Based Pricing Markets
Dynamic, risk-based pricing can systematically exclude vulnerable consumer groups from essential resources such as health insurance and consumer credit. We show that a regulator can realign private incentives with social objectives through a learned, interpretable tax schedule. First, we provide a formal proposition that bounding each firm's \emph{local} demographic gap implicitly bounds the \emph{global} opt-out disparity, motivating firm-level penalties. Building on this insight we introduce …

Scalable Neural Quantum State based Kernel Polynomial Method for Optical Properties from the First Principle
Wei Liu, Rui-Hao Bi, Wenjie Dou
https://arxiv.org/abs/2506.07430

Scalable Neural Quantum State based Kernel Polynomial Method for Optical Properties from the First Principle
Variational optimization of neural-network quantum state representations has achieved FCI-level accuracy for ground state calculations, yet computing optical properties involving excited states remains challenging. In this work, we present a neural-network-based variational quantum Monte Carlo approach for ab-initio absorption spectra. We leverage parallel batch autoregressive sampling and GPU-supported local energy parallelism to efficiently compute ground states of complex systems. By integra…

Optimal Task Offloading with Firm Deadlines for Mobile Edge Computing Systems
Khai Doan, Wesley Araujo, Evangelos Kranakis, Ioannis Lambadaris, Yannis Viniotis, Wonjae Shin
https://arxiv.org/abs/2506.09180

Optimal Task Offloading with Firm Deadlines for Mobile Edge Computing Systems
Under a dramatic increase in mobile data traffic, a promising solution for edge computing systems to maintain their local service is the task migration that may be implemented by means of Autonomous mobile agents (AMA). In designing an optimal scheme for task offloading to AMA, we define a system cost as a minimization objective function that comprises two parts. First, an offloading cost which can be interpreted as the cost of using computational resources from the AMA. Second, a penalty cost …

This https://arxiv.org/abs/2405.06314 has been replaced.
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Applications of the Painlevé-Kuratowski convergence: Lipschitz functions with converging Clarke subdifferentials and convergence of sets defined by converging equations
In this note we investigate some applications of the Painlevé-Kuratowski convergence of closed sets in analysis that are motivated also by questions from singularity theory. First, we generalise to Lipschitz functions the classical theorem stating that given a sequence of smooth functions with locally uniformly convergent derivatives, we obtain the local uniform convergence of the functions themselves (provided they were convergent at one point). We use Clarke subdifferentials instead of deriv…

Among my very first memories of #StarWars was the marketing campaign of Episode III and the TV reruns of Episode IV 25 years ago.. it was a pleasure finally seeing this in a cinema with my friends.

If you're ever going to pay attention to local government elections in England and Wales, these are the ones to watch. (But remember a lot of counts don't even begin until Friday morning - staying up all night would be a bad move, unless you wake up at midnight.)
In a nutshell, first past the post just about copes with two major parties. With three, it can throw up wild swings depending on how support is distributed across constituencies. With FIVE parties polling within a few …

DACN: Dual-Attention Convolutional Network for Hyperspectral Image Super-Resolution
Usman Muhammad, Jorma Laaksonen
https://arxiv.org/abs/2506.05041 https:…

DACN: Dual-Attention Convolutional Network for Hyperspectral Image Super-Resolution
2D convolutional neural networks (CNNs) have attracted significant attention for hyperspectral image super-resolution tasks. However, a key limitation is their reliance on local neighborhoods, which leads to a lack of global contextual understanding. Moreover, band correlation and data scarcity continue to limit their performance. To mitigate these issues, we introduce DACN, a dual-attention convolutional network for hyperspectral image super-resolution. Specifically, the model first employs au…

Direct Estimation of Earthquake Source Properties from a Single CCTV Camera
Soumaya Latour, Mathias Lebihain, Harsha S. Bhat, C\'edric Twardzik, Quentin Bletery, Kenneth W. Hudnut, Fran\c{c}ois Passel\`egue
https://arxiv.org/abs/2505.15461

Direct Estimation of Earthquake Source Properties from a Single CCTV Camera
We present the first direct measurement of the slip-rate function during a natural coseismic rupture, recorded during the 28 March 2025, Mw 7.7 Mandalay earthquake (Myanmar). This measurement was made on a video footage of the surface rupture captured by a security camera located only meters away from the fault trace. Using direct image analysis, we measured the relative slip at each time step and deduced the slip rate. Our results show a local slip duration of 1.3 s, and that the surface slip …

Brain-wide interpolation and conditioning of gene expression in the human brain using Implicit Neural Representations
Xizheng Yu, Justin Torok, Sneha Pandya, Sourav Pal, Vikas Singh, Ashish Raj
https://arxiv.org/abs/2506.11158

Brain-wide interpolation and conditioning of gene expression in the human brain using Implicit Neural Representations
In this paper, we study the efficacy and utility of recent advances in non-local, non-linear image interpolation and extrapolation algorithms, specifically, ideas based on Implicit Neural Representations (INR), as a tool for analysis of spatial transcriptomics data. We seek to utilize the microarray gene expression data sparsely sampled in the healthy human brain, and produce fully resolved spatial maps of any given gene across the whole brain at a voxel-level resolution. To do so, we first obt…

Faithful-Newton Framework: Bridging Inner and Outer Solvers for Enhanced Optimization
Alexander Lim, Fred Roosta
https://arxiv.org/abs/2506.13154 https://

Faithful-Newton Framework: Bridging Inner and Outer Solvers for Enhanced Optimization
While Newton-type methods are known for their fast local convergence and strong empirical performance, achieving theoretically favorable global convergence compared to first-order methods remains a key challenge. For instance, surprisingly, for simple strongly convex problems, no straightforward variant of Newton's method matches the global complexity of gradient descent. Although sophisticated variants can improve iteration complexity over gradient descent for various problems, they often invo…

A look at The Daily, which runs 14 UK lifestyle titles with a model where contributors keep the first £500 and then split revenue 50/50 with founder Marc Astley (Killian Faith-Kelly/Press Gazette)
https://pressgazette.co.uk/p…

Former editor switches from local news to lifestyle with launch of 14 titles
Marc Astley's Daily model offers his editors a 50/50 revenue share.

Ab initio functional-independent calculations of the clamped Pockels tensor of tetragonal barium titanate
Virginie de Mestral, Lorenzo Bastonero, Michele Kotiuga, Marko Mladenovic, Nicola Marzari, Mathieu Luisier
https://arxiv.org/abs/2506.13209

Ab initio functional-independent calculations of the clamped Pockels tensor of tetragonal barium titanate
We present an ab initio method to calculate the clamped Pockels tensor of ferroelectric materials from density-functional theory, the modern theory of polarization exploiting the electric-enthalpy functional, and automated first- and second-order finite-difference derivatives of the polarizations and the Hellmann-Feynman forces. Thanks to the functional-independent capabilities of our approach, we can determine the Pockels tensor of tetragonal barium titanate (BTO) beyond the local density appr…

Sequential Dynamics in Ising Spin Glasses
Yatin Dandi, David Gamarnik, Francisco Pernice, Lenka Zdeborov\'a
https://arxiv.org/abs/2506.09877 https://…

Sequential Dynamics in Ising Spin Glasses
We present the first exact asymptotic characterization of sequential dynamics for a broad class of local update algorithms on the Sherrington-Kirkpatrick (SK) model with Ising spins. Focusing on dynamics implemented via systematic scan -- encompassing Glauber updates at any temperature -- we analyze the regime where the number of spin updates scales linearly with system size. Our main result provides a description of the spin-field trajectories as the unique solution to a system of integro-diff…

This https://arxiv.org/abs/2411.15174 has been replaced.
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Regularity for Weak Solutions to First-Order Local Mean Field Games
We establish interior regularity results for first-order, stationary, local mean-field game (MFG) systems. Specifically, we study solutions of the coupled system consisting of a Hamilton-Jacobi-Bellman equation $H(x, Du, m) = 0$ and a transport equation $-\operatorname{div}(m D_pH(x, Du, m)) = 0$ in a domain $Ω\subset \mathbb{R}^d$. Under suitable structural assumptions on the Hamiltonian $H$, without requiring monotonicity of the system, convexity of the Hamiltonian, separability in variables…

This https://arxiv.org/abs/2407.01353 has been replaced.
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Isotropic constants and regular polytopes
We discuss first-order optimality conditions for the isotropic constant and combine them with RS-movements to obtain structural information about polytopal maximizers. Strengthening a result by Rademacher, it is shown that a polytopal local maximizer with a simplicial vertex must be a simplex. A similar statement is shown for a centrally symmetric local maximizer with a simplicial vertex: it has to be a cross-polytope. Moreover, we show that a zonotope that maximizes the isotropic constant and …

Comment on "Long-range crossed Andreev reflection in a topological insulator nanowire proximitized by a superconductor" by Junya Feng et al
E. S. Tikhonov, V. S. Khrapai
https://arxiv.org/abs/2505.23490

Comment on "Long-range crossed Andreev reflection in a topological insulator nanowire proximitized by a superconductor" by Junya Feng et al
We argue that the interpretation of the experiment [Nature Physics 21, 708-715 (2025)] is misleading in two respects. First, the bias voltages impact the non-local differential conductance randomly, rather than systematically, and the bias symmetry of the non-local conductance in Fig. 3 can be explained by a fine tuned self-gating effect. Second, the full knowledge of the conductance matrix is insufficient to conclude on the relative values of the crossed-Andreev and elastic cotunneling probabi…

Glocal Smoothness: Line Search can really help!
Curtis Fox, Aaron Mishkin, Sharan Vaswani, Mark Schmidt
https://arxiv.org/abs/2506.12648 https://

Glocal Smoothness: Line Search can really help!
Iteration complexities for first-order optimization algorithms are typically stated in terms of a global Lipschitz constant of the gradient, and near-optimal results are achieved using fixed step sizes. But many objective functions that arise in practice have regions with small Lipschitz constants where larger step sizes can be used. Many local Lipschitz assumptions have been proposed, which have lead to results showing that adaptive step sizes and/or line searches yield improved convergence ra…

Quadratic Segre indices
Felipe Espreafico, Stephen McKean, Sabrina Pauli
https://arxiv.org/abs/2506.01547 https://arxiv.org/pdf/2506.…

Quadratic Segre indices
We prove that the local Euler class of a line on a degree $2n-1$ hypersurface in projective $n+1$ space is given by a product of indices of Segre involutions. Segre involutions and their associated indices were first defined by Finashin and Kharlamov over the reals. Our result is valid over any field of characteristic not 2 and gives an infinite family of problems in enriched enumerative geometry with a shared geometric interpretation for the local type.

Rev\^etements du demi-plan de Drinfeld et Langlands p-adique cat\'egorique
Yang Pei
https://arxiv.org/abs/2506.08845 https://arxi…

Revêtements du demi-plan de Drinfeld et Langlands p-adique catégorique
We generalize to all levels of the tower of coverings of the Drinfeld upper plane an exact sequence established by Lue Pan for the first covering. Furthermore, we introduce two functors, inspired by the categorification of the $p$-adic local Langlands correspondence, in Banach and locally analytic versions respectively. We then compute the sheaves associated with the representations appearing in our sequence. As an application, we show that all proper quotients of the universal unitary completi…

Benchmarking Adelaide
Great Australian Pods Podcast Directory: #GreatAusPods

Benchmarking Adelaide | Great Australian Pods Podcast Directory
Podcast: Benchmarking Adelaide Host: Sam Dighton Category: Society & Culture Sub-Category: Entrepreneurship, Local News & Stories, Mathematics & Data Science First Episode: 2024 We sit down with…

This https://arxiv.org/abs/2502.09951 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepe…

Search for Pcs(4459) and Pcs(4338) in Upsilon(1S,2S) inclusive decays at Belle
Using data samples of 102 million Upsilon(1S) events and 158 million Upsilon(2S) events collected by the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider, we search for [udsccbar] pentaquark states decaying to Jpsi Lambda. Using the first observations of Upsilon(1S, 2S) inclusive decays to Jpsi Lambda, we find evidence of the P_ccbars(4459)0 state with a local significance of 3.3 standard deviations, including statistical and systematic uncertainties. We measure the mass and width…

This https://arxiv.org/abs/2503.16393 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Multiplicity $=$ Volume formula and Newton non-degenerate ideals in regular local rings
We develop the notions of Newton non-degenerate (NND) ideals and Newton polyhedra for regular local rings. These concepts were first defined in the context of complex analysis. We show that the characterization of NND ideals via their integral closures known in the analytical setting extends to regular local rings. We use the limiting body $\mathcal{C}(\mathcal{I})$ associated to a graded family $\mathcal{I}$ of ideals to provide a new understanding of the celebrated "Multiplicity $=$ Volume" f…

Balancing Profit and Fairness in Risk-Based Pricing Markets
Jesse Thibodeau, Hadi Nekoei, Afaf Ta\"ik, Janarthanan Rajendran, Golnoosh Farnadi
https://arxiv.org/abs/2506.00140

Balancing Profit and Fairness in Risk-Based Pricing Markets
Dynamic, risk-based pricing can systematically exclude vulnerable consumer groups from essential resources such as health insurance and consumer credit. We show that a regulator can realign private incentives with social objectives through a learned, interpretable tax schedule. First, we provide a formal proposition that bounding each firm's \emph{local} demographic gap implicitly bounds the \emph{global} opt-out disparity, motivating firm-level penalties. Building on this insight we introduce …

Pairwise similarity method for majority domination problem
N. I. Shushko, D. V. Lemtyuzhnikova
https://arxiv.org/abs/2506.08886 https://

Pairwise similarity method for majority domination problem
The paper considers the problem of finding the number of dominant voters in two-level voting procedures. At the first stage, voting is conducted among local groups of voters, and at the second stage, the results are aggregated to form a final decision. The goal is to determine the minimum proportion of voters supporting a proposal for it to be accepted. The paper uses the method of pairwise comparisons to analyze the structure of the problem and develop heuristic algorithms with guaranteed accu…

PBS and one of its local affiliates sue the Trump administration, saying his executive order to cut federal funding violated PBS' First Amendment rights (Sara Fischer/Axios)
https://www.axios.com/2025/05/30/pbs-funding-sue-trump

PBS sues Trump administration over funding cuts
The filing argues the president's executive order violates PBS' First Amendment rights.

MIGHTEE-HI: The direct detection of neutral hydrogen in galaxies at $z>0.25$
Matt J. Jarvis, Madalina N. Tudorache, I. Heywood, Anastasia A. Ponomareva, M. Baes, Natasha Maddox, Kristine Spekkens, Andreea Varasteanu, C. L. Hale, Mario G. Santos, R. G. Varadaraj, Elizabeth A. K. Adams, Alessandro Bianchetti, Barbara Catinella, Jacinta Delhaize, M. Maksymowicz-Maciata, Pavel E. Mancera Pi\~na, Hengxing Pan, Am\'elie Saintonge, Gauri Sharma, O. Ivy Wong

MIGHTEE-HI: The direct detection of neutral hydrogen in galaxies at $z>0.25$
Atomic hydrogen constitutes the gas reservoir from which molecular gas and star formation in galaxies emerges. However, the weakness of the line means it has been difficult to directly detect in all but the very local Universe. Here we present results from the first search using the MeerKAT International Tiered Extragalactic Exploration (MIGHTEE) Survey for high-redshift ($z>0.25$) H{\sc i} emission from individual galaxies. By searching for 21-cm emission centered on the position and redshift …

Convergence of linear programming hierarchies for Gibbs states of spin systems
Hamza Fawzi, Omar Fawzi
https://arxiv.org/abs/2506.06125 https://

Convergence of linear programming hierarchies for Gibbs states of spin systems
We consider the problem of computing expectation values of local functions under the Gibbs distribution of a spin system. In particular, we study two families of linear programming hierarchies for this problem. The first hierarchy imposes local spin flip equalities and has been considered in the bootstrap literature in high energy physics. For this hierarchy, we prove fast convergence under a spatial mixing (decay of correlations) condition. This condition is satisfied for example above the cri…

This https://arxiv.org/abs/2503.16393 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Multiplicity $=$ Volume formula and Newton non-degenerate ideals in regular local rings
We develop the notions of Newton non-degenerate (NND) ideals and Newton polyhedra for regular local rings. These concepts were first defined in the context of complex analysis. We show that the characterization of NND ideals via their integral closures known in the analytical setting extends to regular local rings. We use the limiting body $\mathcal{C}(\mathcal{I})$ associated to a graded family $\mathcal{I}$ of ideals to provide a new understanding of the celebrated "Multiplicity $=$ Volume" f…

This https://arxiv.org/abs/2401.09337 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Gravity Coupled with Scalar, SU$(n)$, and Spinor Fields on Manifolds with Null-Boundary
In this paper, we present a theory for gravity coupled with scalar, SU$(n)$ and spinor fields on manifolds with null-boundary. We perform the symplectic reduction of the space of boundary fields and give the constraints of the theory in terms of local functionals of boundary vielbein and connection. For the three different couplings, the analysis of the constraint algebra shows that the set of constraints does not form a first class system.

This https://arxiv.org/abs/2411.03812 has been replaced.
initial toot: https://mastoxiv.page/@a…

Deeper understandings of the gauge theory for the first order inhomogeneous linear elasticity
Our previous study [1] has demonstrated that the gauge theory is a proper framework for characterizing the local temporal and spatial interactions in inhomogeneous elastic media. However, in that study temporal interactions were interpreted as the compensation for the loss of kinetic energy resulting from homogenization process, distinct from damping effects. In addition, that study did not account for the integration of temporal and spatial transformations, leading to the omission of some cruc…

This https://arxiv.org/abs/2503.21653 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

$α$-scaled strong convergence and stability of stochastic theta method for time-changed stochastic differential equations with local Lipschitz coefficients
We propose the first $α$-parameterized framework for solving time-changed stochastic differential equations (SDEs), explicitly linking convergence rates and key driving parameter of the underlying stochastic processes. Theoretically, we derive exact moment estimates and exponential moment estimate of inverse $α$-stable subordinator $E$ using Mittag-Leffler functions. The stochastic theta (ST) method is investigated for a class of SDEs driven by a time-changed Brownian motion, whose coefficien…

This https://arxiv.org/abs/2503.11568 has been replaced.
initial toot: https://mastoxiv.page/@a…

Probing the Limit of Heat Transfer in Inorganic Crystals with Deep Learning
Heat transfer is a fundamental property of matter. Research spanning decades has attempted to discover materials with exceptional thermal conductivity, yet the upper limit remains unknown. Using deep learning accelerated crystal structure prediction and first-principles calculation, we systematically explore the thermal conductivity landscape of inorganic crystals. We brute-force over half a million ordered crystalline structures, encompassing an extensive coverage of local energy minima in bin…

Boundary bilinear control of semilinear parabolic PDEs: quadratic convergence of the SQP method
Eduardo Casas, Mariano Mateos
https://arxiv.org/abs/2505.24237

Boundary bilinear control of semilinear parabolic PDEs: quadratic convergence of the SQP method
We analyze a bilinear control problem governed by a semilinear parabolic equation. The control variable is the Robin coefficient on the boundary. First-order necessary and second-order sufficient optimality conditions are derived. A sequential quadratic programming algorithm is then proposed to compute local solutions. Starting the iterations from an initial point in an $L^2$-neighborhood of the local solution we prove stability and quadratic convergence of the algorithm in $L^p$ ($p < \infty$)…

This https://arxiv.org/abs/2504.13373 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Geometric adaptive smoothed aggregation multigrid for discontinuous Galerkin discretisations
We present a geometric multigrid solver based on adaptive smoothed aggregation suitable for Discontinuous Galerkin (DG) discretisations. Mesh hierarchies are formed via domain decomposition techniques, and the method is applicable to fully unstructured meshes using arbitrary element shapes. Furthermore, the method can be employed for a wide range of commonly used DG numerical fluxes for first- and second-order PDEs including the Interior Penalty and the Local Discontinuous Galerkin methods. We …

Critical scattering for the nonlinear Schr\"odinger equation on waveguide manifolds
Yongming Luo
https://arxiv.org/abs/2506.00442 https://

Critical scattering for the nonlinear Schrödinger equation on waveguide manifolds
We study the small data scattering problem in critical spaces for the nonlinear Schrödinger equation (NLS) on waveguide manifolds. Our work is primarily inspired by the recent paper of Kwak and Kwon \cite{KwakKwon} that established the local well-posedness of the periodic NLS with possibly non-algebraic nonlinearity. While we adopt a framework similar to \cite{KwakKwon} for our problem, two main obstacles prevent its direct adaptation to the waveguide setting. First, the classical Strichartz e…

An emergence-oriented approach to cyclic pursuit
Zhaozhan Yao, Yuhua Yao, Xiaoming Hu
https://arxiv.org/abs/2506.05157 https://arxiv.…

An emergence-oriented approach to cyclic pursuit
In this paper, we explore the cyclic pursuit problem of unicycles and study circular formation from an emergence perspective. We first establish a systematic study on such formation and derive a necessary and sufficient condition for its existence. Building on this theoretical foundation, we design a distributed control law that enables the spontaneous formation of circular formations through only local interactions. Notably, key geometric features -- including the radius and agent spacing -- a…

This https://arxiv.org/abs/2502.07662 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Exploring the mysterious high-ionization source powering [Ne V] in high-z analog SBS0335-052 E with JWST/MIRI
Nearby blue compact dwarf galaxies (BCDs) share similar properties with objects from the Epoch of Reionization revealed by JWST, in terms of low stellar mass, low metallicity and high specific star-formation rate. Thus, they represent ideal local laboratories for detailed multi-wavelength studies to understand their properties and the mechanisms shaping them. We report the first JWST MIRI/MRS observations of the BCD SBS 0335-052 E, analyzing MIR emission lines tracing different levels of ioniza…

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.…