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arXiv preprints from January 1, 2026 through September 30, 2026 — 14:36:15 EST

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Posted in cs.IT · 2026-01-02 · Zhiheng Guo, Zhaoyang Liu, Zihan Cen, Chenyuan Feng, Xinghua Sun, Xiang Chen, Tony Q. S. Quek, Xijun Wang

CoCo-Fed: A Unified Framework for Memory- and Communication-Efficient Federated Learning at the Wireless Edge

The deployment of large-scale neural networks within the Open Radio Access Network (O-RAN) architecture is pivotal for enabling native edge intelligence. However, this paradigm faces two critical bottlenecks: the prohibitive memory footprint required for local training on resource-constrained gNBs, and the saturation of...

💬 0 commentsarXiv:2601.00549v2PDF
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Posted in eess.SY · 2026-01-02 · Kooktae Lee

Optimal Transport-Based Decentralized Multi-Agent Distribution Matching

This paper presents a decentralized control framework for distribution matching in multi-agent systems (MAS), where agents collectively achieve a prescribed terminal spatial distribution. The problem is formulated using optimal transport (Wasserstein distance), which provides a principled measure of distributional discrepancy and...

💬 0 commentsarXiv:2601.00548v2PDF
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Posted in physics.gen-ph · 2026-01-02 · Sebastián Alí Sacasa-Céspedes

On Geometric Evolution and Microlocal Regularity of the Navier-Stokes Equations

We propose a microlocal-Riemannian framework for the three-dimensional incompressible Navier-Stokes equations on a smooth oriented Riemannian manifold (M,g). The dynamics is lifted to the unit cosphere bundle S*M via a normal-coordinate microlocal transform whose construction is justified by the positive homogeneity of the principal...

💬 0 commentsarXiv:2601.08854v4PDF
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Posted in physics.optics · 2026-01-02 · Evgenii E. Narimanov, Boris Shapiro

Carrier Drift Modulation and the Hyperbolic Time Crystals

We introduce the Carrier Drift Modulation - a new mechanism for creating temporal boundaries and enabling photonic time crystals. This approach opens a direct route to hyperbolic temporal metamaterials and, in particular, hyperbolic time crystals. We demonstrate that the very process responsible for time crystal formation can...

💬 0 commentsarXiv:2601.00547v1PDF
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Posted in physics.gen-ph · 2026-01-02 · Aziza Altaibayeva, Ulbossyn Ualikhanova, Zhanar Umurzakhova, Surajit Chattopadhyay

A Combined Barrow Entropy and QCD Ghost Mechanism for Late-Time Cosmic Acceleration

We investigate a unified dark-energy scenario based on the combined effects of Barrow entropy corrections and the QCD ghost mechanism, referred to as the BH--QCDGDE model. The dark-energy density is constructed in a generalized holographic form that incorporates both Barrow-deformed entropy corrections and low-energy QCD vacuum...

💬 0 commentsarXiv:2601.02408v1PDF
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Posted in cs.RO · 2026-01-02 · Varun Agrawal, Frank Dellaert

Variable Elimination in Hybrid Factor Graphs for Discrete-Continuous Inference & Estimation

Many problems in robotics involve both continuous and discrete components, and modeling them together for estimation tasks has been a long standing and difficult problem. Hybrid Factor Graphs give us a mathematical framework to model these types of problems, however existing approaches for solving them are based on approximations. In...

💬 0 commentsarXiv:2601.00545v4PDF
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Posted in math.AG · 2026-01-02 · Shunya Adachi, Kazuki Hiroe

On the Riemann-Hilbert problem for hyperplane arrangements with a good line

We study a variant of the Riemann-Hilbert problem on the complements of hyperplane arrangements. This problem asks whether a given local system on the complement can be realized as the solution sheaf of a logarithmic Pfaffian system with constant coefficients. In this paper, we generalize Katz's middle convolution as a functor for...

💬 0 commentsarXiv:2601.00544v3PDF
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Posted in cs.CL · 2026-01-02 · Chung-Wei Victor Yuan

ECR: Manifold-Guided Semantic Cues for Compact Language Models

Compact models often lose the structure of their embedding space. The issue shows up when the capacity is tight or the data spans several languages. Such collapse makes it difficult for downstream tasks to build on the resulting representation. Existing compression methods focus on aligning model outputs at a superficial level but...

💬 0 commentsarXiv:2601.00543v1PDF
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Posted in cond-mat.supr-con · 2026-01-02 · DEARDAO DeSci Collaborative Team, Yanhuai Ding

AI-Guided Computational Design of a Room-Temperature, Ambient- Pressure Superconductor Candidate: Grokene

We introduce Grokene, a novel two-dimensional superlattice derived from graphene, which was identified through an AI-guided materials discovery workflow utilizing a large language model. Grokene is predicted to exhibit ambient-pressure, room-temperature superconductivity, with computational simulations revealing a high electron-phonon...

💬 0 commentsarXiv:2601.00931v1PDF
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Posted in cs.IR · 2026-01-02 · Nicolas Bougie, Gian Maria Marconi, Tony Yip, Narimasa Watanabe

AlignUSER: Human-Aligned LLM Agents via World Models for Recommender System Evaluation

Evaluating recommender systems remains challenging due to the gap between offline metrics and real user behavior, as well as the scarcity of interaction data. Recent work explores large language model (LLM) agents as synthetic users, yet they typically rely on few-shot prompting, which yields a shallow understanding of the environment...

💬 0 commentsarXiv:2601.00930v1PDF
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Posted in cs.CV · 2026-01-02 · Jiacheng Sui, Yujie Zhou, Li Niu

DynaDrag: Dynamic Drag-Style Image Editing by Motion Prediction

To achieve pixel-level image manipulation, drag-style image editing which edits images using points or trajectories as conditions is attracting widespread attention. Most previous methods follow move-and-track framework, in which miss tracking and ambiguous tracking are unavoidable challenging issues. Other methods under different...

💬 0 commentsarXiv:2601.00542v1PDF
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Posted in math.ST · 2026-01-02 · Falong Tan, Shan Tang, Lixing Zhu

Asymptotic Distribution-Free Tests for Ultra-high Dimensional Parametric Regressions via Projected Empirical Processes and $p$-value Combination

This paper develops a novel methodology for testing the goodness-of-fit of sparse parametric regression models based on projected empirical processes and p-value combination, where the covariate dimension may substantially exceed the sample size. In such ultra-high dimensional settings, traditional empirical process-based tests often...

💬 0 commentsarXiv:2601.00541v1PDF
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Posted in cond-mat.supr-con · 2026-01-02 · Jicheol Kim, Dong-Hee Kim

Superconductivity in the kagome Hubbard model under the flat-band-preserving disorder

We investigate the disordered flat-band superconductivity within the attractive Hubbard model on the kagome lattice by contrasting the flat-band-preserving disorder [Phys. Rev. B 98, 235109 (2018)] with the random hopping disorder that breaks the flat-band degeneracy. Through Bogoliubov-de Gennes mean-field calculations, we find that...

💬 0 commentsarXiv:2601.00540v1PDF
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Posted in math.CO · 2026-01-02 · Rohit Lohani, Ravi Suthar, Krishnendra Shekhawat

Algorithmic Design and Graph-Based Classification for Rectilinear-Shaped Modules in Floor Plans

We present a graph-theoretic framework for constructing floor plans that support non-rectangular modules, with particular emphasis on L-shaped and T-shaped geometries. Unlike traditional approaches that primarily focus on rectangular modules and outer boundary constraints, our method explicitly incorporates structural restrictions...

💬 0 commentsarXiv:2601.00539v1PDF
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Posted in eess.SP · 2026-01-02 · Chi-Te Kuo, Li-Hsiang Shen, Jyun-Jhe Huang

Parametrized Sharing for Multi-Agent Hybrid DRL for Multiple Multi-Functional RISs-Aided Downlink NOMA Networks

Multi-functional reconfigurable intelligent surface (MF-RIS) is conceived to address the communication efficiency thanks to its extended signal coverage from its active RIS capability and self-sustainability from energy harvesting (EH). We investigate the architecture of multi-MF-RISs to assist non-orthogonal multiple access (NOMA)...

💬 0 commentsarXiv:2601.00538v2PDF
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Posted in cs.CV · 2026-01-02 · Guangqian Guo, Pengfei Chen, Yong Guo, Huafeng Chen, Boqiang Zhang, Shan Gao

Boosting Segment Anything Model to Generalize Visually Non-Salient Scenarios

Segment Anything Model (SAM), known for its remarkable zero-shot segmentation capabilities, has garnered significant attention in the community. Nevertheless, its performance is challenged when dealing with what we refer to as visually non-salient scenarios, where there is low contrast between the foreground and background. In these...

💬 0 commentsarXiv:2601.00537v1PDF
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Posted in gr-qc · 2026-01-02 · M. Sharif, Madiha Ajmal

Exploring Hybrid Star Models with Quark and Hadronic Matter in $f(Q)$ Gravity

In this paper, we develop a model for a static anisotropic hybrid star that includes strange quark matter and hadronic matter. We solve the field equations in the $f(Q)$ gravity framework (where $Q$ is the non-metricity) using the Finch-Skea metric. The relationship between density and pressure for strange quark matter is described...

💬 0 commentsarXiv:2601.00929v1PDF
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Posted in cs.CL · 2026-01-02 · Yuelyu Ji, Zhuochun Li, Rui Meng, Daqing He

Retrieval--Reasoning Processes for Multi-hop Question Answering: A Four-Axis Design Framework and Empirical Trends

Multi-hop question answering (QA) requires systems to iteratively retrieve evidence and reason across multiple hops. While recent RAG and agentic methods report strong results, the underlying retrieval--reasoning \emph{process} is often left implicit, making procedural choices hard to compare across model families. This survey takes...

💬 0 commentsarXiv:2601.00536v1PDF
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Posted in cs.CV · 2026-01-02 · Ruiqiang Zhang, Hengyi Wang, Chang Liu, Guanjie Wang, Zehua Ma, Weiming Zhang

FreeText: Training-Free Text Rendering in Diffusion Transformers via Attention Localization and Spectral Glyph Injection

Large-scale text-to-image (T2I) diffusion models excel at open-domain synthesis but still struggle with precise text rendering, especially for multi-line layouts, dense typography, and long-tailed scripts such as Chinese. Prior solutions typically require costly retraining or rigid external layout constraints, which can degrade...

💬 0 commentsarXiv:2601.00535v1PDF
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Posted in nucl-th · 2026-01-02 · H. Kamada, A. Arslanaliev, Y. Kostylenko, A. V. Shebeko, J. Golak, R. Skibiński, K. Topolnicki, V. Chahar, D. F. Ramírez Jiménez, H. Witała, W. N. Polyzou

Comparison of Relativistic and Non-relativistic Faddeev calculations for Proton-Deuteron Elastic Scattering

This investigation compares non-relativistic and relativistic nucleon-nucleon (NN) potentials in the context of pd scattering. Conventional NN potentials (e.g., CDBonn, AV18) rely on the non-relativistic Schrödinger equation, whereas the Kharkiv potential is intrinsically relativistic. We employ the Coester-Pieper-Serduke (CPS) and...

💬 0 commentsarXiv:2601.00534v1PDF
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Posted in cs.CV · 2026-01-02 · Wenrui Li, Hongtao Chen, Yao Xiao, Wangmeng Zuo, Jiantao Zhou, Yonghong Tian, Xiaopeng Fan

All-in-One Video Restoration under Smoothly Evolving Unknown Weather Degradations

All-in-one image restoration aims to recover clean images from diverse unknown degradations using a single model. But extending this task to videos faces unique challenges. Existing approaches primarily focus on frame-wise degradation variation, overlooking the temporal continuity that naturally exists in real-world degradation...

💬 0 commentsarXiv:2601.00533v2PDF
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Posted in physics.space-ph · 2026-01-02 · Ping-Yen Shen, Ryan J. Caverly

Solar Cruiser Disturbance Torque Estimation and Predictive Momentum Management

This paper presents a novel disturbance-torque-estimation-augmented model predictive control (MPC) framework to perform momentum management on NASA's Solar Cruiser solar sail mission. Solar Cruiser represents a critical step in the advancement of large-scale solar sail technology and includes the innovative use of an active mass...

💬 0 commentsarXiv:2601.00532v3PDF
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Posted in stat.ME · 2026-01-02 · Raphael C. Kim, Rachel C. Nethery, Kevin L. Chen, Falco J. Bargagli-Stoffi

Fair Policy Learning under Bipartite Network Interference: Learning Fair and Cost-Effective Environmental Policies

Numerous studies have shown the harmful effects of airborne pollutants on human health. Vulnerable groups and communities often bear a disproportionately larger health burden due to exposure to airborne pollutants. Thus, there is a need to design policies that effectively reduce the public health burdens while ensuring cost-effective...

💬 0 commentsarXiv:2601.00531v1PDF
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Posted in cs.DC · 2026-01-02 · Ravi Teja Pagidoju

Cost-Performance Analysis of Cloud-Based Retail Point-of-Sale Systems: A Comparative Study of Google Cloud Platform and Microsoft Azure

Althoughthereislittleempiricalresearchonplatform-specific performance for retail workloads, the digital transformation of the retail industry has accelerated the adoption of cloud-based Point-of-Sale (POS) systems. This paper presents a systematic, repeatable comparison of POS workload deployments on Google Cloud Platform (GCP) and...

💬 0 commentsarXiv:2601.00530v1PDF
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Posted in math.CO · 2026-01-02 · Daewoong Cheong, Hunseok Kang, Jinbeom Kim

The Mattila-Sjölin problem for the k-distance over a finite field

Let $\mathbb{F}_q^d$ be a $d$-dimensional vector space over a finite field $\mathbb{F}_q$ with $q$ elements. For $x\in \mathbb{F}_q^d$, let $\|x\| = x_1^2+\dots+x_d^2$. By abuse of terminology, we shall call $\|\cdot\|$ a norm on $\mathbb{F}_q^d$. For a subset $E\subset \mathbb{F}_q^d$, let $Δ(E)$ be the distance set on $E$ defined as...

💬 0 commentsarXiv:2601.00529v1PDF