Tootfinder

Genetic Influences on Brain Aging: Analyzing Sex Differences in the UK Biobank using Structural MRI
Karen Ardila, Aashka Mohite, Abdoljalil Addeh, Amanda V. Tyndall, Cindy K. Barha, Quan Long, M. Ethan MacDonald
https://arxiv.org/abs/2505.20344

Genetic Influences on Brain Aging: Analyzing Sex Differences in the UK Biobank using Structural MRI
Brain aging trajectories differ between males and females, yet the genetic factors underlying these differences remain underexplored. Using structural MRI and genotyping data from 40,940 UK Biobank participants (aged 45-83), we computed Brain Age Gap Estimates (BrainAGE) for total brain, hippocampal, and ventricular volumes. We conducted sex-stratified genome-wide association studies (GWAS) and Post-GWAS analyses to identify genetic variants associated with accelerated brain aging. Distinct gen…

hdbayes: An R Package for Bayesian Analysis of Generalized Linear Models Using Historical Data
Ethan M. Alt, Xinxin Chen, Luiz M. Carvalho, Joseph G. Ibrahim
https://arxiv.org/abs/2506.20060

hdbayes: An R Package for Bayesian Analysis of Generalized Linear Models Using Historical Data
There has been increased interest in the use of historical data to formulate informative priors in regression models. While many such priors for incorporating historical data have been proposed, adoption is limited due to access to software. Where software does exist, the implementations between different methods could be vastly different, making comparisons between methods difficult. In this paper, we introduce the R package hdbayes, an implementation of the power prior, normalized power prior…

Remember the #Cohen brothers #film "The Mann Who Wasn't There"?
Here is such a good writeup about the #emotion

Infinite polynomial patterns in large subsets of the rational numbers
Ethan Ackelsberg
https://arxiv.org/abs/2506.19667 https://arxiv…

Infinite polynomial patterns in large subsets of the rational numbers
Inspired by a question of Kra, Moreira, Richter, and Robertson, we prove two new results about infinite polynomial configurations in large subsets of the rational numbers. First, given a finite coloring of $\mathbb{Q}$, we show that there exists an infinite set $B = \{b_n : n \in \mathbb{N}\} \subseteq \mathbb{Q}$ such that $\{b_i, b_i^2 + b_j : i < j\}$ is monochromatic. Second, we prove that every subset of positive density in the rational numbers contains a translate of such an infinite conf…

On gap sets in arbitrary Kummer extensions of $K(x)$
Ethan Cotterill, Erik A. R. Mendoza, Pietro Speziali
https://arxiv.org/abs/2506.19169 https://

On gap sets in arbitrary Kummer extensions of $K(x)$
Let $K$ be an algebraically closed field, and let $F/K(x)$ be a Kummer extension of function fields of genus $g$. We provide a compact and explicit description of the gap set $G(Q)$ at any totally ramified place $Q$ of the extension $F/K(x)$. As a consequence, we deduce structural properties of the Weierstrass semigroup $H(Q)$; in particular, we determine a generating set for $H(Q)$, and we characterize its symmetry in certain cases. We also generalize a formula due to Towse that describes the …

New zero-free regions for Dedekind zeta-functions at small and large ordinates
Sourabhashis Das, Swati Gaba, Ethan Simpson Lee, Aditi Savalia, Peng-Jie Wong
https://arxiv.org/abs/2506.19319

New zero-free regions for Dedekind zeta-functions at small and large ordinates
Given a number field $L\neq \mathbb{Q}$, we obtain new and explicit zero-free regions for Dedekind zeta-functions of $L$, which refine the previous works of Ahn--Kwon, Kadiri, and Lee. In particular, for low-lying zeros, we extend Kadiri's result to all number fields while improving the main constant.

Holomorphic Unified Field Theory of Gravity and the Standard Model
John. W. Moffat, Ethan. J. Thompson
https://arxiv.org/abs/2506.19161 https://

Holomorphic Unified Field Theory of Gravity and the Standard Model
We present a holomorphic framework in which gravity, gauge interactions, and their couplings to charges and currents emerge from a single geometric action on a four-complex-dimensional manifold. The Hermitian metric yields on the real slice $y^μ= 0$, a real symmetric metric $g_{(μν)}$ giving the vacuum Einstein equations, and an antisymmetric part $g_{[μν]}$ that reproduces Maxwell's equations with sources. A single holomorphic gauge connection for $G_{\text{GUT}}$, such as $SU(5)$ or $SO(…

🇺🇦 #NowPlaying on #BBC6Music's #AmbientFocus
Sam Gendel & Ethan Braun:
🎵 1/2 SCULPTURE
#SamGendel #EthanBraun
https://ulyssa.bandcamp.com/track/1-2-sculpture
https://open.spotify.com/track/4Ko0SCeXU64R5kCpD4q8al

Q&A with Seth Meyers on why he might be one of the last late-night TV hosts, how podcasts affected late-night talk shows, expanding SNL to the UK, and more (Ethan Shanfeld/Variety)
https://variety.com/2025/tv/news/seth-meyers-snl-uk-no-n…

Seth Meyers on SNL UK, No New Late-Night Hosts, Cut Weekend Update Joke
Seth Meyers explains why there won't be a new 'wave' of late-night talk show hosts and gives his thoughts on the upcoming U.K. version of 'SNL.

Shaping Boundaries to Control and Transport Topological Defects in Colloidal Nematic Liquid Crystals
Gerardo Campos-Villalobos, Andr\'e F. V. Matias, Ethan I. L. Jull, Lisa Tran, Marjolein Dijkstra
https://arxiv.org/abs/2506.18664

Shaping Boundaries to Control and Transport Topological Defects in Colloidal Nematic Liquid Crystals
Anisotropic rod-like particles form liquid crystalline phases with varying degrees of orientational and translational order. When confined geometrically, these phases can give rise to topological defects, which can be selected and controlled by tuning how the rods align near boundaries, known as anchoring. While anchoring in molecular liquid crystals can be controlled through surface functionalization, this approach is not easily applicable to microscale colloidal systems, which have so far bee…

Embedding $\mathrm{SL}(2,\mathbb{C})/\mathbb{Z}_2$ in Complex Riemannian Geometry
John. W. Moffat, Ethan. J. Thompson
https://arxiv.org/abs/2506.19158 http…

Embedding $\mathrm{SL}(2,\mathbb{C})/\mathbb{Z}_2$ in Complex Riemannian Geometry
We present a unified framework demonstrating how the spinor complex Lorentz group SL(2,C)/Z\_2 is realized as a canonical subgroup within a four-dimensional complex Riemannian manifold. Building on the complex, holomorphic metric extension and contour-integration regularization of classical singularities, we show that promoting the metric to a complex-valued tensor on a complex 4-fold enlarges the frame bundle to SO(4,C). Its spin double cover factorizes as a product of two independent SL(2,C) …

Electrostatic control of quantum phases in KTaO3-based planar constrictions
Jordan T. McCourt, Ethan G. Arnault, Merve Baksi, Samuel J. Poage, Salva Salmani-Rezaie, Divine P. Kumah, Kaveh Ahadi, Gleb Finkelstein
https://arxiv.org/abs/2506.18894

Electrostatic control of quantum phases in KTaO3-based planar constrictions
Two-dimensional electron gases (2DEGs) formed at complex oxide interfaces offer a unique platform to engineer quantum nanostructures. However, scalable fabrication of locally addressable devices in these materials remains challenging. Here, we demonstrate an efficient fabrication approach by patterning narrow constrictions in a superconducting KTaO3-based heterostructure. The constrictions are individually tunable via the coplanar side gates formed within the same 2DEG plane. Our technique leve…

Explicit conditional bounds for the residue of a Dedekind zeta-function at $s=1$
Stephan Ramon Garcia, Ethan Simpson Lee
https://arxiv.org/abs/2506.17416 h…

Explicit conditional bounds for the residue of a Dedekind zeta-function at $s=1$
We prove new explicit conditional bounds for the residue at $s=1$ of the Dedekind zeta-function associated to a number field. Our bounds are concrete and all constants are presented with explicit numerical values.

Toward Practical Privacy in XR: Empirical Analysis of Multimodal Anonymization Mechanisms
Azim Ibragimov, Ethan Wilson, Kevin R. B. Butler, Eakta Jain
https://arxiv.org/abs/2506.13882

Toward Practical Privacy in XR: Empirical Analysis of Multimodal Anonymization Mechanisms
As extended reality (XR) systems become increasingly immersive and sensor-rich, they enable the collection of fine-grained behavioral signals such as eye and body telemetry. These signals support personalized and responsive experiences and may also contain unique patterns that can be linked back to individuals. However, privacy mechanisms that naively pair unimodal mechanisms (e.g., independently apply privacy mechanisms for eye and body privatization) are often ineffective at preventing re-ide…

Dynamically Tunable Helical Antenna
Ethan Chien, Jan Steckel
https://arxiv.org/abs/2506.14065 https://arxiv.org/pdf/2506.14065…

Dynamically Tunable Helical Antenna
Unmanned aerial FPV systems demand ultra-low latency, high-reliability communication links. At high speeds and in cluttered environments, Doppler shifts and rapid multipath changes can dramatically raise packet error rates. This paper investigates these phenomena in the context of ExpressLRS (ELRS) long-range FPV control links and demonstrates a novel solution: real-time geometry tuning of a circularly polarized helical antenna array. This study integrates Maxwell-equation-based full-wave simul…

Identifying and Investigating Global News Coverage of Critical Events Such as Disasters and Terrorist Attacks
Erica Cai, Xi Chen, Reagan Grey Keeney, Ethan Zuckerman, Brendan O'Connor, Przemyslaw A. Grabowicz
https://arxiv.org/abs/2506.12925

Identifying and Investigating Global News Coverage of Critical Events Such as Disasters and Terrorist Attacks
Comparative studies of news coverage are challenging to conduct because methods to identify news articles about the same event in different languages require expertise that is difficult to scale. We introduce an AI-powered method for identifying news articles based on an event FINGERPRINT, which is a minimal set of metadata required to identify critical events. Our event coverage identification method, FINGERPRINT TO ARTICLE MATCHING FOR EVENTS (FAME), efficiently identifies news articles about…

How does everything corrupt in NYC somehow end up leading back to Eric Adams? https://masto.nyc/@EthanHarp/114593406205972506

Choreographic Quick Changes: First-Class Location (Set) Polymorphism
Ashley Samuelson, Andrew K. Hirsch, Ethan Cecchetti
https://arxiv.org/abs/2506.10913 h…

Choreographic Quick Changes: First-Class Location (Set) Polymorphism
Choreographic programming is a promising new paradigm for programming concurrent systems where a developer writes a single centralized program that compiles to individual programs for each node. Existing choreographic languages, however, lack critical features integral to modern systems, like the ability of one node to dynamically compute who should perform a computation and send that decision to others. This work addresses this gap with $λ_{QC}$, the first typed choreographic language with \e…

Eye, Robot: Learning to Look to Act with a BC-RL Perception-Action Loop
Justin Kerr, Kush Hari, Ethan Weber, Chung Min Kim, Brent Yi, Tyler Bonnen, Ken Goldberg, Angjoo Kanazawa
https://arxiv.org/abs/2506.10968

Eye, Robot: Learning to Look to Act with a BC-RL Perception-Action Loop
Humans do not passively observe the visual world -- we actively look in order to act. Motivated by this principle, we introduce EyeRobot, a robotic system with gaze behavior that emerges from the need to complete real-world tasks. We develop a mechanical eyeball that can freely rotate to observe its surroundings and train a gaze policy to control it using reinforcement learning. We accomplish this by first collecting teleoperated demonstrations paired with a 360 camera. This data is imported in…

Discovering Coordinated Processes From Social Online Networks
Anna Kalenkova, Lewis Mitchell, Ethan Johnson
https://arxiv.org/abs/2506.12988 https://

Discovering Coordinated Processes From Social Online Networks
The rapid growth of social media presents a unique opportunity to study coordinated agent behavior in an unfiltered environment. Online processes often exhibit complex structures that reflect the nature of the user behavior, whether it is authentic and genuine, or part of a coordinated effort by malicious agents to spread misinformation and disinformation. Detection of AI-generated content can be extremely challenging due to the high quality of large language model-generated text. Therefore, ap…

Replaced article(s) found for nlin.CG. https://arxiv.org/list/nlin.CG/new
[1/1]:
- Fast offline decoding with local message-passing automata
Ethan Lake

Analysis of LLM Bias (Chinese Propaganda & Anti-US Sentiment) in DeepSeek-R1 vs. ChatGPT o3-mini-high
PeiHsuan Huang, ZihWei Lin, Simon Imbot, WenCheng Fu, Ethan Tu
https://arxiv.org/abs/2506.01814

Analysis of LLM Bias (Chinese Propaganda & Anti-US Sentiment) in DeepSeek-R1 vs. ChatGPT o3-mini-high
Large language models (LLMs) increasingly shape public understanding and civic decisions, yet their ideological neutrality is a growing concern. While existing research has explored various forms of LLM bias, a direct, cross-lingual comparison of models with differing geopolitical alignments-specifically a PRC-system model versus a non-PRC counterpart-has been lacking. This study addresses this gap by systematically evaluating DeepSeek-R1 (PRC-aligned) against ChatGPT o3-mini-high (non-PRC) for…

HabSim: Architecture for modelling disruptions, propagation, detection and repair in deep space habitats
Luca Vaccino, Alana K. Lund, Shirley J. Dyke, Mohsen Azimi, Ethan Vallerga
https://arxiv.org/abs/2506.08903

HabSim: Architecture for modelling disruptions, propagation, detection and repair in deep space habitats
Establishing long-term human settlements in deep space presents significant challenges. Harsh environmental conditions, such as extreme temperature fluctuations, micrometeorite impacts, seismic activity, and exposure to solar and cosmic radiation pose obstacles to the design and operation of habitat systems. Prolonged mission duration and the vast distances from Earth introduce further complications in the form of delayed communication and limited resources, making autonomy especially desirable…

Learning Correlated Astrophysical Foregrounds with Denoising Diffusion Probabilistic Models
Karthik Prabhu, Srinivasan Raghunathan, Ethan B. Anderes, Lloyd E. Knox
https://arxiv.org/abs/2506.09036

Learning Correlated Astrophysical Foregrounds with Denoising Diffusion Probabilistic Models
Extragalactic foregrounds -- most notably the Cosmic Infrared Background (CIB) and the thermal Sunyaev-Zel'dovich (tSZ) effect -- exhibit complex, non-Gaussian structure and correlations that can bias analyses of small-scale cosmic microwave background (CMB) temperature anisotropies. These foregrounds can introduce mode coupling at small-scales (multipoles $\ell \geq 3000$) that mimic true lensing signals, thereby complicating analyses such as CMB lensing reconstruction. We present a novel appr…

An illustration of formal moduli problems with differential graded Lie algebras
Ethan Eugene Wynner
https://arxiv.org/abs/2506.12977 https://

An illustration of formal moduli problems with differential graded Lie algebras
This article provides an exposition to the topic of formal moduli problems, emphasizing its connections with differential graded Lie algebras, and mainly following from Jacob Lurie's DAG X: Formal Moduli Problems. As such, this paper should not be viewed as a presentation of original work, but rather a concise introduction to the subject in the form of a set of organized notes. I hoped to make this paper feel welcoming and insightful for the non-expert enjoyer of derived algebraic geometry, lik…

Fronts and patterns with a dynamic parameter ramp
Montie Avery, Odalys Garcia-Lopez, Ryan Goh, Benjamin Hosek, Ethan Shade
https://arxiv.org/abs/2506.12142

Fronts and patterns with a dynamic parameter ramp
We examine the effect of a slowly-varying time-dependent parameter on invasion fronts for which an unstable homogeneous equilibrium is invaded by either another homogeneous state or a spatially periodic state. We first explain and motivate our approach by studying asymptotically constant invasion fronts in a scalar FKPP equation with time-dependent parameter which controls the stability of the trivial state. Following recent works in the area, we use a linearized analysis to derive formal predi…

How does everything corrupt in NYC somehow end up leading back to Eric Adams? https://masto.nyc/@EthanHarp/114593406205972506

My favourite thing about iDubbbz bringing Content Cop/Deputy back and on H3 is that through pure habit of contrarianism the Sam Hyde fans have to vouch for Ethan Klein of all people.

SkyLB: A Locality-Aware Cross-Region Load Balancer for LLM Inference
Tian Xia, Ziming Mao, Jamison Kerney, Ethan J. Jackson, Zhifei Li, Jiarong Xing, Scott Shenker, Ion Stoica
https://arxiv.org/abs/2505.24095

SkyLB: A Locality-Aware Cross-Region Load Balancer for LLM Inference
Serving Large Language Models (LLMs) efficiently in multi-region setups remains a challenge. Due to cost and GPU availability concerns, providers typically deploy LLMs in multiple regions using instance with long-term commitments, like reserved instances or on-premise clusters, which are often underutilized due to their region-local traffic handling and diurnal traffic variance. In this paper, we introduce SkyLB, a locality-aware multi-region load balancer for LLM inference that aggregates regi…

A Real K3 Automorphism with Most of Its Entropy in the Real Part
Ethan Cohen
https://arxiv.org/abs/2506.03479 https://arxiv.org/pdf/2…

A Real K3 Automorphism with Most of Its Entropy in the Real Part
This article describes an example of a real projective K3 surface admitting a real automorphism $f$ satisfying $h_{top}(f, X(\mathbb{C})) < 2 h_{top}(f, X(\mathbb{R}))$. The example presented is a $(2,2,2)$-surface in $\mathbb{P}^1 \times \mathbb{P}^1 \times \mathbb{P}^1$ given by the vanishing set of $(1 + x^2)(1 + y^2)(1 + z^2) + 10xyz - 2$, first considered by McMullen. Along the way, we develop an ad hoc shadowing lemma for $C^2$ (real) surface diffeomorphisms, and apply it to estimate the …

Automated Symmetric Constructions in Discrete Geometry
Bernardo Subercaseaux, Ethan Mackey, Long Qian, Marijn J. H. Heule
https://arxiv.org/abs/2506.00224 …

Automated Symmetric Constructions in Discrete Geometry
We present a computational methodology for obtaining rotationally symmetric sets of points satisfying discrete geometric constraints, and demonstrate its applicability by discovering new solutions to some well-known problems in combinatorial geometry. Our approach takes the usage of SAT solvers in discrete geometry further by directly embedding rotational symmetry into the combinatorial encoding of geometric configurations. Then, to realize concrete point sets corresponding to abstract designs …

Few-Shot Speech Deepfake Detection Adaptation with Gaussian Processes
Neta Glazer, David Chernin, Idan Achituve, Sharon Gannot, Ethan Fetaya
https://arxiv.org/abs/2505.23619

Few-Shot Speech Deepfake Detection Adaptation with Gaussian Processes
Recent advancements in Text-to-Speech (TTS) models, particularly in voice cloning, have intensified the demand for adaptable and efficient deepfake detection methods. As TTS systems continue to evolve, detection models must be able to efficiently adapt to previously unseen generation models with minimal data. This paper introduces ADD-GP, a few-shot adaptive framework based on a Gaussian Process (GP) classifier for Audio Deepfake Detection (ADD). We show how the combination of a powerful deep e…

On the sum of a prime and a square-free number with divisibility conditions
Ethan S. Lee, Rowan O'Clarey
https://arxiv.org/abs/2506.11814 https://

On the sum of a prime and a square-free number with divisibility conditions
We prove that every natural number greater than $2$ can be written as the sum of a prime and a square-free number that is co-prime to any prime $q > 3$. We also demonstrate that this result can be extended in a natural way, by assuming the Generalised Riemann Hypothesis is true.

Sorrel: A simple and flexible framework for multi-agent reinforcement learning
Rebekah A. Gelp\'i, Yibing Ju, Ethan C. Jackson, Yikai Tang, Shon Verch, Claas Voelcker, William A. Cunningham
https://arxiv.org/abs/2506.00228

Sorrel: A simple and flexible framework for multi-agent reinforcement learning
We introduce Sorrel (https://github.com/social-ai-uoft/sorrel), a simple Python interface for generating and testing new multi-agent reinforcement learning environments. This interface places a high degree of emphasis on simplicity and accessibility, and uses a more psychologically intuitive structure for the basic agent-environment loop, making it a useful tool for social scientists to investigate how learning and social interaction leads to the development and change of group dynamics. In thi…

Geometric Visual Servo Via Optimal Transport
Ethan Canzini, Simon Pope, Ashutosh Tiwari
https://arxiv.org/abs/2506.02768 https://arxi…

Geometric Visual Servo Via Optimal Transport
When developing control laws for robotic systems, the principle factor when examining their performance is choosing inputs that allow smooth tracking to a reference input. In the context of robotic manipulation, this involves translating an object or end-effector from an initial pose to a target pose. Robotic manipulation control laws frequently use vision systems as an error generator to track features and produce control inputs. However, current control algorithms don't take into account the …

pH-Dependent Zeta Potential Induces Diffusiophoretic Focusing in an Acid-Base Reaction
Ethan Coleman, Ankur Gupta
https://arxiv.org/abs/2506.05731 https://…

pH-Dependent Zeta Potential Induces Diffusiophoretic Focusing in an Acid-Base Reaction
Diffusiophoresis of charged particles in the presence of electrolytes has been extensively studied in the literature. However, in these setups, particles typically move in a single direction, either up or down the electrolyte gradient. Here, we theoretically investigate the conditions under which a particle can reverse its diffusiophoretic direction within the same setup, leading to the formation of a focusing band under steady-state concentration gradients. Using multi-ion diffusiophoresis cal…