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arXiv preprints from January 1, 2026 through September 23, 2026 — 19:45:15 EST

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Posted in cs.CL · 2026-01-13 · Yao Tang, Li Dong, Yaru Hao, Qingxiu Dong, Furu Wei, Jiatao Gu

Multiplex Thinking: Reasoning via Token-wise Branch-and-Merge

Large language models often solve complex reasoning tasks more effectively with Chain-of-Thought (CoT), but at the cost of long, low-bandwidth token sequences. Humans, by contrast, often reason softly by maintaining a distribution over plausible next steps. Motivated by this, we propose Multiplex Thinking, a stochastic soft reasoning...

💬 0 commentsarXiv:2601.08808v1PDF
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Posted in cs.CV · 2026-01-13 · Tamas Endrei, Gyorgy Cserey

S3-CLIP: Video Super Resolution for Person-ReID

Tracklet quality is often treated as an afterthought in most person re-identification (ReID) methods, with the majority of research presenting architectural modifications to foundational models. Such approaches neglect an important limitation, posing challenges when deploying ReID systems in real-world, difficult scenarios. In this...

💬 0 commentsarXiv:2601.08807v1PDF
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Posted in cs.SE · 2026-01-13 · Abhi Kottamasu, Chirag Mahapatra, Sam Lee, Ben Pan, Aakash Barthwal, Akul Datta, Anurag Gupta, Pranav Mehta, Ajay Arun, Silas Alberti, Adarsh Hiremath, Brendan Foody, Bertie Vidgen

APEX-SWE

We introduce the AI Productivity Index for Software Engineering (APEX-SWE), a benchmark for assessing whether frontier AI models can execute economically valuable software engineering work. Unlike existing evaluations that focus on narrow, well-defined tasks, APEX-SWE assesses two novel task types that reflect real-world software...

💬 0 commentsarXiv:2601.08806v3PDF
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Posted in math.GT · 2026-01-13 · Cristina Ana-Maria Anghel, András Juhász

Quantum Heegaard diagrams and knot Floer Homology

Given a knot presented as a braid closure, we construct a unified intersection model for the Alexander and Jones polynomials of the knot via what we call quantum Heegaard diagrams. These diagrams are obtained by stabilising the disc model of the first author, which we show are doubly-pointed Heegaard diagrams of the knot together with...

💬 0 commentsarXiv:2601.08805v2PDF
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Posted in math.DG · 2026-01-13 · Luca F. Di Cerbo, Hayden Hunter, Aaron K. Thrasher

Price Inequality and the Growth of Harmonic Functions on Non-Positively Curved Manifolds

We obtain effective estimates for the growth rate of the $L^2$-energy of harmonic functions on geodesic balls in complete simply connected non-positively curved Riemannian manifolds with pinched sectional curvature. Our study relies upon a double-sided Price inequality for harmonic functions. Finally, we apply this circle of ideas to...

💬 0 commentsarXiv:2601.08804v2PDF
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Posted in econ.GN · 2026-01-13 · Carina I. Hausladen, Marcel H. Schubert, Christoph Engel

Identifying Latent Intentions via Inverse Reinforcement Learning in Repeated Linear Public Good Games

Behavior in repeated public goods games continues to challenge standard theory: heterogeneous social preferences can explain first-round contributions, but not the substantial volatility observed across repeated interactions. Using 50,390 decisions from 2,938 participants, we introduce two methodological advances to address this gap....

💬 0 commentsarXiv:2601.08803v1PDF
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Posted in math.AT · 2026-01-13 · William Balderrama, Piotr Pstrągowski

Unstable synthetic deformations I: Malcev theories

This paper is the first in a series of articles devoted to the construction and study of synthetic deformations of $\infty$-categories in the unstable context: that is, deformations of $\infty$-categories that categorify spectral sequence or obstruction-theoretic information. This paper sets up the foundations of our study. We...

💬 0 commentsarXiv:2601.08802v1PDF
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Posted in math.DS · 2026-01-13 · Pranav Agarwal, Gheorghe Craciun, Abhishek Deshpande, Jiaxin Jin

Extinction in Reaction Network Models

In this paper, we study extinction in dynamical systems generated by reaction networks. We introduce two notions: weak extinction and strong extinction, and relate them to the structure of the underlying network through Lyapunov functions and LaSalle's invariance principle. In particular, for all deficiency-zero networks that are not...

💬 0 commentsarXiv:2601.08801v1PDF
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Posted in cs.DC · 2026-01-13 · Bowen Zhou, Jinrui Jia, Wenhao He, Yong Zhang, Fang Dong

MixServe: An Automatic Distributed Serving System for MoE Models with Hybrid Parallelism Based on Fused Communication Algorithm

The Mixture of Experts (MoE) models are emerging as the latest paradigm for Large Language Models (LLMs). However, due to memory constraints, MoE models with billions or even trillions of parameters can only be deployed in multi-GPU or even multi-node & multi-GPU based serving systems. Thus, communication has became a major bottleneck...

💬 0 commentsarXiv:2601.08800v1PDF
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Posted in physics.flu-dyn · 2026-01-13 · Marlone Vernet, Eric Falcon

Collapse of statistical equilibrium in large-scale hydroelastic turbulent waves

At scales larger than the forcing scale, some out-of-equilibrium turbulent systems (such as hydrodynamic turbulence, wave turbulence, and nonlinear optics) exhibit a state of statistical equilibrium where energy is equipartitioned among large-scale modes, in line with the Rayleigh-Jeans spectrum. Key open questions now pertain to...

💬 0 commentsarXiv:2601.08799v1PDF
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Posted in cs.CV · 2026-01-13 · Maayan Yesharim, R. G. Bina Perl, Uri Roll, Sarig Gafny, Eli Geffen, Yoav Ram

Near-perfect photo-ID of the Hula painted frog with zero-shot deep local-feature matching

Accurate individual identification is essential for monitoring rare amphibians, yet invasive marking is often unsuitable for critically endangered species. We evaluate state-of-the-art computer-vision methods for photographic re-identification of the Hula painted frog (Latonia nigriventer) using 1,233 ventral images from 191...

💬 0 commentsarXiv:2601.08798v1PDF
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Posted in cs.CV · 2026-01-13 · Zhi Qin Tan, Xiatian Zhu, Owen Addison, Yunpeng Li

DentalX: Context-Aware Dental Disease Detection with Radiographs

Diagnosing dental diseases from radiographs is time-consuming and challenging due to the subtle nature of diagnostic evidence. Existing methods, which rely on object detection models designed for natural images with more distinct target patterns, struggle to detect dental diseases that present with far less visual support. To address...

💬 0 commentsarXiv:2601.08797v1PDF
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Posted in math-ph · 2026-01-13 · Long Li, Wei Wang, Shiwen Zhang

Upper and Lower Bounds for The Quantum Dynamics of One-Dimensional Divergence-Type Random Jacobi Operators

We study quantum transport for the discrete one-dimensional random Jacobi operator of divergence-gradient type. For strictly positive and bounded random variables, we analyze the q-moments of the position operator and establish both upper and lower power-law bounds on their growth. Our approach relies on the asymptotic behavior of the...

💬 0 commentsarXiv:2601.08796v2PDF
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Posted in physics.flu-dyn · 2026-01-13 · Ankit Bajpai, Jagadeesh Gopalan

Turbulent spots in hypersonic transitional planar and axisymmetric boundary layers

Experiments were conducted to investigate characteristics of turbulent spots formed in transitional boundary layers developed over a flat plate and an axisymmetric cone placed in similar hypersonic freestream environment of Mach number 5.85. The freestream Reynolds number in the present work varied between $3.0-6.0\times10^6$/m. Heat...

💬 0 commentsarXiv:2601.08795v1PDF
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Posted in gr-qc · 2026-01-13 · Seth Major, Daniel Rodriguez, Thomas Takis

Black hole entropy from the quantum atmosphere of bound gravitational fluctuations

Black hole entropy is identified with the counting of the dynamical degrees of freedom of trapped gravitational modes continually sourced by the Hawking-Unruh process. In the context of linear perturbations of Schwarzschild spacetime the density of states is derived from the orthogonality of states in the solution space of the...

💬 0 commentsarXiv:2601.08794v1PDF
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Posted in physics.optics · 2026-01-13 · Oren Cohen

Attosecond Path Qubits in Strong-Field Physics

This perspective introduces attosecond path qubits: measurement-defined two-level subsystems that arise naturally in strong-field physics from the coherent interference of distinguishable quantum pathways. These effective qubits are dynamical superposition states formed during laser-driven sub-cycle electron motion and appear in...

💬 0 commentsarXiv:2601.08793v1PDF
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Posted in cond-mat.mes-hall · 2026-01-13 · Eslam Ahmed, Ryoi Ohashi, Hiroki Isobe, Kentaro Nomura, Yukio Tanaka

Universal Transport Theory for Paired Fractional Quantum Hall States in the Quantum Point Contact Geometry

Even-denominator fractional quantum Hall (FQH) states can be viewed as topological superconductors of composite fermions, supporting a charged chiral mode and $|\mathcal{C}_{cf}|$ neutral Majorana modes set by the Chern number $\mathcal{C}_{cf}$. Despite ongoing efforts, distinguishing the many competing paired phases remains an open...

💬 0 commentsarXiv:2601.08792v2PDF
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Posted in econ.GN · 2026-01-13 · Petri P. Kärenlampi

Economics of Douglas fir management revisited

A recent Douglas fir management investigation is repeated in terms of accounting measures. The rotation times become much shorter than in earlier results. Thinnings do not become feasible, provided the thinning effects on the volumetric yield function do not evolve in time. Evolving prices and expenses break the periodic boundary...

💬 0 commentsarXiv:2601.14284v1PDF
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Posted in astro-ph.GA · 2026-01-13 · Justin A. Kader, Vivian U, Loreto Barcos-Muñoz, Marina Bianchin, Sean T. Linden, Yiqing Song, Gabriela Canalizo, Archana Aravindan, George C. Privon Tanio Díaz-Santos, Christopher Hayward, Matthew A. Malkan, Lee Armus, Rosalie C. McGurk, Jeffrey A. Rich, Anne M. Medling, Sabrina Stierwalt, Claire E. Max, Aaron S. Evans, Christopher J. Agostino, Vassilis Charmandaris, Tianmu Gao, Justin H. Howell, Hanae Inami, Thomas S. -Y. Lai, Kirsten L. Larson, Christopher D. Martin, Mateusz Matuszewski, Joseph M. Mazzarella, James D. Neill, Nikolaus Z. Prusinski, Raymond Remigio, David B. Sanders, Jason Surace

A precessing jet from an active galactic nucleus drives gas outflow from a disk galaxy

To reproduce observed galaxy properties, cosmological simulations require that massive galaxies experience feedback from active galactic nuclei, which regulates star formation within those galaxies. However, the energetics and timescales of these feedback processes are poorly constrained. We combine optical, infrared, sub-millimeter...

💬 0 commentsarXiv:2601.08791v1PDF
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Posted in cs.CV · 2026-01-13 · Lei Tan, Shuwei Li, Mohan Kankanhalli, Robby T. Tan

Aggregating Diverse Cue Experts for AI-Generated Image Detection

The rapid emergence of image synthesis models poses challenges to the generalization of AI-generated image detectors. However, existing methods often rely on model-specific features, leading to overfitting and poor generalization. In this paper, we introduce the Multi-Cue Aggregation Network (MCAN), a novel framework that integrates...

💬 0 commentsarXiv:2601.08790v1PDF
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Posted in math.QA · 2026-01-13 · Stéphane Baseilhac, Matthieu Faitg, Philippe Roche

On the structure and representations of quantum graph algebras at roots of unity

We study the specializations $\mathcal{L}_{g,n}^ε$ at roots of unity $ε$ of odd order of the graph algebras, associated to a simply-connected complex semi-simple algebraic group $G$ and a compact oriented surface $Σ_{g,n}^{\circ}$ with genus $g$, $n$ punctures, and one boundary component. We prove that the central localizations of...

💬 0 commentsarXiv:2601.08789v2PDF
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Posted in gr-qc · 2026-01-13 · Ryley McGovern, Seth Major, Trevor Scheuing, Thomas Takis

Condensation of area quanta ensembles with quantum statistics in Schwarzschild spacetimes

As is well known, near-horizon (equivalently high acceleration) observers in spherically symmetric black hole spacetimes have a particularly simple form of the quasi-local energy. Using this energy and indistinguishable area quanta satisfying quantum statistics a statistical mechanical description of the Schwarzschild black hole...

💬 0 commentsarXiv:2601.08788v2PDF
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Posted in math.NA · 2026-01-13 · F. Dai, V. Temlyakov

A survey on sampling recovery

The reconstruction of unknown functions from a finite number of samples is a fundamental challenge in pure and applied mathematics. This survey provides a comprehensive overview of recent developments in sampling recovery, focusing on the accuracy of various algorithms and the relationship between optimal recovery errors, nonlinear...

💬 0 commentsarXiv:2601.08787v1PDF
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Posted in math.PR · 2026-01-13 · Guido Lagos, Jorge Navarro, Hector Olivero

Simple repair policies and decompositions for semi-coherent systems with simultaneous failures

We consider semi-coherent binary systems that are subject to simultaneous failures of its components. These are systems whose components can be either working or failed; the system can also be working or failed depending on the state of the components; and repairing a component cannot cause the system to fail. We consider that one or...

💬 0 commentsarXiv:2601.08786v1PDF
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Posted in cs.AI · 2026-01-13 · Jieying Chen, Karen de Jong, Andreas Poole, Jan Burakowski, Elena Elderson Nosti, Joep Windt, Chendi Wang

Uncovering Political Bias in Large Language Models using Parliamentary Voting Records

As large language models (LLMs) become deeply embedded in digital platforms and decision-making systems, concerns about their political biases have grown. While substantial work has examined social biases such as gender and race, systematic studies of political bias remain limited, despite their direct societal impact. This paper...

💬 0 commentsarXiv:2601.08785v1PDF