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AI & Data Science Preprint PDF DOI

DR-MMSearchAgent: Deepening Reasoning in Multimodal Search Agents

Shengqin Wang, Wentao Yan, Huichi Zhou, Yihang Chen, Kun Shao, Zhizhong Zhang, Yuan Xie ยท 2026

Agentic multimodal models have garnered significant attention for their ability to leverage external tools to tackle complex tasks. However, it is observed that such agents often meet premature interaโ€ฆ

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Earth & Environmental Sciences Preprint PDF DOI

The Ophiuchus DIsc Survey Employing ALMA (ODISEA). Substructures as a function of SED Class and disc mass in 100 systems

Trisha Bhowmik, Lucas Cieza, J. M. Miley, P. H. Nogueira, Camilo Gonzalez-Ruilova, Prachi Chavan, Anibal Sierra, Anuroop Dasgupta, Simon Casassus, Grace Batalla-Falcon, Gioele Di Lernia, Antonio S. Hales, Jeff Jennings, Santiago Orcajo, Sebastian Perez, Dary Ruiz-Rodriguez, Yangfan Shi, Jonathan P. Williams, Ke Zhang, Alice Zurlo ยท 2026

Current high-resolution studies of protoplanetary discs are biased toward small samples of the brightest (flux > 50 mJy at 225 GHz) and largest systems. We present a complete flux-limited high-resolutโ€ฆ

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Mathematics Preprint PDF DOI

A Durrmeyer-type variant of Gr\"unwald Interpolation Operators

P. C. Vinaya ยท 2026

In this paper, we construct a Durrmeyer-type variant of Gr\"unwald interpolation operators on the space $L^p[0,{\pi}]$. We prove their fundamental properties, including boundedness and convergence in โ€ฆ

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Mathematics Preprint PDF DOI

Characterizations of Lyapunov domains in terms of Riesz transforms and the Plemelj-Privalov theorem

Juan Jose Marin, Jose Maria Martell, Dorina Mitrea, Marius Mitrea ยท 2026

We prove several characterizations of $\mathscr{C}^{1,\omega}$-domains (aka Lyapunov domains), where $\omega$ is a growth function satisfying natural assumptions. For example, given an Ahlfors regularโ€ฆ

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Physics Preprint PDF DOI

Hamiltonian formulation for scalar and two-form gauge fields coupled to 3d gravity

Omar Rodriguez-Tzompantzi ยท 2026

We develop a systematic Hamiltonian formulation for a gravitating topological matter system in three-dimensional spacetime, coupling a scalar gauge field and a rank-2 antisymmetric gauge field to Einsโ€ฆ

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AI & Data Science Preprint PDF DOI

Policy Gradient Primal-Dual Method for Safe Reinforcement Learning from Human Feedback

Qiang Liu, Adrienne Kline, Ermin Wei ยท 2026

Safe Reinforcement Learning from Human Feedback (Safe RLHF) has recently achieved empirical success in developing helpful and harmless large language models by decoupling human preferences regarding hโ€ฆ

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Mathematics Preprint PDF DOI

Critical points of the second Neumann eigenfunctions on the quadrangles with symmetry

Haiyun Deng, Changfeng Gui, Xuyong Jiang, Xiaoping Yang, Ruofei Yao, Jun Zou ยท 2026

In this paper, we focus primarily on the symmetry properties of the second Neumann eigenfunction $u$ with respect to the symmetry axis or symmetry center of the relevant domain $Q$, such as isosceles โ€ฆ

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Mathematics Preprint PDF DOI

Multifractal Analysis, Liv\v{s}ic Rigidity, and Fluctuation Theorems for Axiom A Diffeomorphisms: The Pesin Formula and the Gallavotti-Cohen Symmetry

Abdoulaye Thiam ยท 2026

This Part develops structural consequences of the thermodynamic formalism for Axiom A diffeomorphisms. The Pesin Entropy Formula equates the metric entropy of the SRB measure to the sum of positive Lyโ€ฆ

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Mathematics Preprint PDF DOI

Transfer Operators and SRB Measures for Axiom A Diffeomorphisms: Spectral Gap, Structural Stability, and the Gibbs Equivalence Theorem

Abdoulaye Thiam ยท 2026

We develop the Ruelle transfer operator theory for Axiom A diffeomorphisms and construct Sinai-Ruelle-Bowen measures, carrying the symbolic spectral results of Part I [64] over to smooth dynamics throโ€ฆ

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AI & Data Science Preprint PDF DOI

Where Fake Citations Are Made: Tracing Field-Level Hallucination to Specific Neurons in LLMs

Yuefei Chen, Yihao Quan, Xiaodong Lin, Ruixiang Tang ยท 2026

LLMs frequently generate fictitious yet convincing citations, often expressing high confidence even when the underlying reference is wrong. We study this failure across 9 models and 108{,}000 generateโ€ฆ

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Mathematics Preprint PDF DOI

Algebraic numbers and Fourier analysis: Salem's third problem

Khoa D. Nguyen ยท 2026

In 1963, Rapha\"el Salem concluded his highly influential book ``Algebraic Numbers and Fourier Analysis'' with a list of four unsolved problems. The first two problems remain wide open while the last โ€ฆ

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AI & Data Science Preprint PDF DOI

ParamBoost: Gradient Boosted Piecewise Cubic Polynomials

Nicolas Salvade, Tim Hillel ยท 2026

Generalized Additive Models (GAMs) can be used to create non-linear glass-box (i.e. explicitly interpretable) models, where the predictive function is fully observable over the complete input space. Hโ€ฆ

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Mathematics Preprint PDF DOI

Regularity of rooftop envelopes

Eleonora Di Nezza, Alexander Rashkovskii ยท 2026

We study continuity, H\"older regularity, and $C^{1,1}$-regularity of geodesics between continuous plurisubharmonic functions on bounded domains of $\mathbb{C}^n$. We then derive regularity propertiesโ€ฆ

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Engineering Preprint PDF DOI

Multiscale Structural Reliability Analysis in high dimensions with Tensor Trains and Physics-Augmented Neural Networks

Aryan Tyagi, Alex de Beer, Tiangang Cui, Jan N. Fuhg ยท 2026

Structural reliability evaluation for composites constitutes a fundamentally high-dimensional multiscale problem, as microscale material uncertainties must propagate to the macroscale and can be quantโ€ฆ

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Physics Preprint PDF DOI

Confinement in a finite duality cascade

Fabrizio Aramini, Riccardo Argurio, Matteo Bertolini, Pietro Moroni, Valdo Tatitscheff ยท 2026

We provide several consistency checks of confining dynamics in a recently conjectured holographic dual of a four-dimensional ${\cal N}=1$ supersymmetric gauge theory that flows from a conformal manifoโ€ฆ

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Physics Preprint PDF DOI

Magnetism and symmetry of superconducting gap in LaFeAsO from dynamical mean-field theory

S. L. Skornyakov, V. I. Anisimov, A. A. Katanin ยท 2026

By employing a combined method of density functional theory and dynamical mean field theory (DFT+DMFT) we investigate the effect of electronic correlations on the magnetic and superconducting propertiโ€ฆ

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Physics Preprint PDF DOI

Fractional motions of an active particle on the quantum vortex

Yun Jeong Kang, Sung Kyu Seo, Kyungsik Kim ยท 2026

We analytically investigate the diffusive motion inferred from experimental observations of active particles driven by quantum vortices on the surface of superfluid helium. We first study the dynamicaโ€ฆ

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Physics Preprint PDF DOI

New bounds for the area of MOTS and generalized ultra-massive spacetimes

Jose M. M. Senovilla ยท 2026

Bounds for the area of general closed marginally trapped surfaces (MTSs) are presented. They do not require any stability condition, and are determined by a constant that depends on a particular compoโ€ฆ

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Physics Preprint PDF DOI

Bose metal near pair-density-wave order in a spin-orbit-coupled Kondo lattice

Piers Coleman, Aaditya Panigrahi, Alexei Tsvelik ยท 2026

We show that a three-dimensional superconductor with a non-Abelian SU(2) order parameter can support an extended resistive regime a Bose metal, in which transport is carried by bosonic electron-Majoraโ€ฆ

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Mathematics Preprint PDF DOI

Real-Time Algorithms for Model Predictive Control of Hybrid Dynamical Systems

Armin Nurkanovic, Anton Pozharskiy, Moritz Diehl ยท 2026

Model predictive control (MPC) of hybrid dynamical systems is challenging because the associated optimization problem is nonsmooth and the resulting feedback law is discontinuous. This paper develops โ€ฆ

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