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Computer Science Preprint PDF DOI

Users' Activity Logs: the Good, the Bad, the Misconception, and the Disastrous

Eman Alashwali · 2026

Most service providers, such as Google, save logs from data generated by users while using the service. Many service providers provide users with privacy controls to manage whether, how, and for how l…

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Mathematics Preprint PDF DOI

A half-space theorem for nonlocal minimal surfaces

Matteo Cozzi, Jack Thompson · 2026

We establish a half-space theorem \`a la Hoffman and Meeks for nonlocal minimal surfaces. Differently from the classical case, our result holds in every dimension.…

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Mathematics Preprint PDF DOI

Monodromy action of mirror stops for toric Calabi-Yau surfaces

Michela Barbieri, Andrew Hanlon, Jeff Hicks · 2026

Mirror symmetry predicts an action by the fundamental group of a conjectural stringy K\"ahler moduli space on the derived category of an algebraic variety. For a toric variety, a model for this space …

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Physics Preprint PDF DOI

A benchmark for binary star interaction with a supermassive black hole in general relativity

Megha Sharma, Alexander Heger, Daniel J. Price, Emilio Tejeda, Evgeni Grishin, Luis A. Manzaneda, Alessandro A. Trani · 2026

Most galaxies have supermassive black holes (SMBH) at their centres, surrounded by stars with binary systems also present in this environment. We use two schemes - post-Newtonian (PN) and a scalar per…

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Physics Preprint PDF DOI

First Observation of Multiple Very-Near-Earth Reconnection Events During a Single Storm Main Phase

Fekireselassie Beyene, Vassilis Angelopoulos, Christine Gabrielse, Yoshizumi Miyoshi, Iku Shinohara, Shoichiro Yokota, Satoshi Kasahara, Kunihiro Keika, Tomoaki Hori, Yasumasa Kasaba, Yoshiya Kasahara, Ayako Matsuoka, Mariko Teramoto, Kazuhiro Yamamoto · 2026

For the first time, this paper presents three very-near-Earth reconnection (VNERX) events observed within the same 12-hour-long storm main phase. The THEMIS inner probes observed the hallmarks of thre…

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Mathematics Preprint PDF DOI

On a conjecture of distance spectral extremal problems

Hongzhang Chen, Jianxi Li, Yongtao Li · 2026

Brualdi and Hoffman proposed a well-known problem of determining the graph with maximum adjacency spectral radius among all graphs with given size $m$. Early work by Friedland and Stanley addressed so…

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Mathematics Preprint PDF DOI

A mathematical study of an elastic-viscous-plastic sea-ice model with the Kelvin-Voigt rheology

Daniel W. Boutros, Xin Liu, Marita Thomas, Edriss S. Titi · 2026

Motivated by the elastic-viscous-plastic (EVP) sea-ice model [E. C. Hunke and J. K. Dukowicz, J. Phys. Oceanogr., 27, 9 (1997), 1849--1867], which is used in large-scale numerical climate simulations,…

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Physics Preprint PDF DOI

Neural-Network-Based Variational Method in Nuclear Density Functional Theory: Application to the Extended Thomas-Fermi Model

Kenta Yoshimura · 2026

We propose a neural-network-based variational framework for nuclear Density Functional Theory based on the extended Thomas--Fermi (ETF) model, in which proton and neutron number densities are represen…

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Computer Science Preprint PDF DOI

An Empirical Analysis of Mobile Energy Consumption Across User Configurations

Wellington Oliveira · 2026

Mobile devices have become ubiquitous tools for communication, entertainment, and productivity, yet battery autonomy remains a constraint. While energy-saving tips exist, they are often generic, anecd…

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Mathematics Preprint PDF DOI

On rates of convergence for sample average approximations without smoothness

Hien Duy Nguyen, Jacob Westerhout, Xin Guo · 2026

Sample average approximation (SAA) replaces an intractable expected objective by an empirical average and is a basic device of modern stochastic optimization. We develop a rate theory for optimal valu…

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Computer Science Preprint PDF DOI

Barriers and Enablers of Online Instruction in Hospitality Education in the Philippines: An Exploratory Study

Maria Anna D. Cruz, Jeaneth D. Serna, Lloyd D. Feliciano, Mike Haizon M. David, Ma. Ferna Bel L. Punsalan, Glen Brian L. Lacsa, Michelle C. Castro, John Paul P. Miranda · 2026

This study examined the barriers and enablers of online instruction in hospitality education. A sequential exploratory design was implemented with hospitality teachers from both public and private hig…

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Physics Preprint PDF DOI

Solar Energetic Particle Reflection by Precursor ICMEs: Multi-spacecraft Observations of Bi-Directional Electron Beams at 1 AU

Lucas Liuzzo, Wenwen Wei, Andrew R. Poppe, Christina O. Lee, Vassilis Angelopoulos · 2026

We present case studies of two impulsive solar energetic electron (SEE) events during which particles at energies from 1-600 keV were detected by THEMIS-ARTEMIS orbiting the Moon, Wind at Earth's firs…

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Education Preprint PDF DOI

Six textbook mistakes in quantum field theory

Alexandros Gezerlis · 2026

This article discusses incorrect statements appearing in textbooks on quantum field theory (QFT); some of these mistakes also appear in the research literature. The focus is not on errors made by an i…

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Physics Preprint PDF DOI

Optimal paths across potentials on scalar field space

Saskia Demulder, Dieter Lust, Carmine Montella, Thomas Raml · 2026

Motivated by the Swampland Distance Conjecture, we study distances in field space using the framework of Optimal Transport. The associated optimisation problem naturally leads to a notion of distance …

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Computer Science Preprint PDF DOI

Workplace Demands and Emotional Expression Among Early Childhood Educators: A Computational Analysis of Professional Online Discourse

Hailong Jiang · 2026

Early childhood educators work in settings characterized by heavy regulation, emotional labor, staffing instability, and low pay. Although these conditions are well documented in survey-based research…

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Mathematics Preprint PDF DOI

Topological and differentiable aspects of Clifford semigroups

Stefano Bonzio, Andrea Loi, Giuseppe Zecchini · 2026

This paper investigates the interplay between algebraic structure, topology, and differentiability in Clifford semigroups. The study is developed along three main themes. First, in the compact Hausdor…

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Physics Preprint PDF DOI

Scissors modes in generalized Gross-Pitaevskii equations

Neelam Shukla, Oleksandr V. Marchukov, Bastien Humbert, Jan Arlt, Jeremy Armstrong, Artem G. Volosniev · 2026

We investigate scissors modes in nonlinear systems with arbitrary power-law dependence of the nonlinear term. Through analytical derivation, we establish a general expression demonstrating that, in th…

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Computer Science Preprint PDF DOI

Visual Accessibility in a Virtual Kitchen: Effects of Open Shelving on Performance, Cognitive Load, and Experience in Older Adults with and without MCI

Ibrahim Bilau, Eunhwa Yang, Hyeokhyen Kwon, Stacie Smith, Bruce Walker, Hui Cai, Ece Erdogmus, Omobolanle Ogunseiju · 2026

This study examines how visual accessibility through cabinet design influences task performance, cognitive load, physical activity level, motivation, and user experience in a virtual kitchen among old…

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Mathematics Preprint PDF DOI

The coloured mutation class of $\mathbb{D}_n$- quivers and their application to $m$-cluster tilted algebras

Viviana Gubitosi, Claudio Qureshi · 2026

In this paper, we present an explicit and purely combinatorial characterization of the $m$-coloured quivers that appear within the $m$-coloured mutation class of a quiver of type $\mathbb{D}_n$. The $…

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Computer Science Preprint PDF DOI

An algebraic characterisation of Eve-positional languages

Thomas Colcombet, Olivier Idir · 2026

We present a new algebraic characterisation of Eve-positionality for $\omega$-regular languages. It involves only a limited number of elementary local properties to be checked. An $\omega$-regular l…

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