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AI & Data Science Preprint PDF DOI

ARMA approximation of a Non-separable Spatio-Temporal Model with Fractional Smoothnesses in Space and Time

S. Knutsen Furset, Geir-Arne Fuglstad, Espen R. Jakobsen · 2026

The Mat\'ern covariance model is ubiquitous in spatial modelling, but there is no default choice for spatio-temporal modelling. In this paper, we consider the recently proposed ``diffusion-based'' ext…

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Earth & Environmental Sciences Preprint PDF DOI

Measuring Apsidal Clustering

Amir Siraj, Christopher F. Chyba, Scott Tremaine · 2026

The decade-long debate over the existence of apsidal clustering in the outer solar system is poised for reignition given the plethora of distant trans-Neptunian object (TNO) discoveries expected from …

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Mathematics Preprint PDF DOI

Stability of Multiplicities in Symmetry Breaking: The sl_2 Case

Toshiyuki Kobayashi · 2026

This expository paper explains, in the case of $\mathfrak{sl}_2$, the ideas introduced in the preprints (arXiv:2509.17007, 2604.22262), which develop a new framework for the study of multiplicities in…

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Physics Preprint PDF DOI

Beyond the Final Label: Exploiting the Untapped Potential of Classification Histories in Astronomical Light Curve Analysis

Zhuoyang Zhou, Alex I. Malz, Chad M. Schafer, Konstantin Malanchev, Guillermo Cabrera-Vives, Christopher Hernandez · 2026

The Legacy Survey of Space and Time (LSST) on the Vera C. Rubin Observatory will generate a massive collection of time series (light curves) of the measured flux of transient and variable astronomical…

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Physics Preprint PDF DOI

Linear feedback control of liquid film on moving substrate via free-surface stresses

Fabio Pino, Benoit Scheid, Miguel A. Mendez, Demetrios T. Papageorgiou · 2026

Liquid films on moving substrates are used in dip-coating processes to form uniform protective layers. Controlling free-surface waves is essential due to the film's inherent linear instability. Theref…

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AI & Data Science Preprint PDF DOI

One Identity, Many Roles: Multimodal Entity Coreference for Enhanced Video Situation Recognition

Balaji Darur, Amanmeet Garg, Makarand Tapaswi · 2026

Video Situation Recognition (VidSitu) addresses the challenging problem of "who did what to whom, with what, how, and where" in a video. It tests thorough video understanding by requiring identificati…

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AI & Data Science Preprint PDF DOI

PExA: Parallel Exploration Agent for Complex Text-to-SQL

Tanmay Parekh, Ella Hofmann-Coyle, Shuyi Wang, Sachith Sri Ram Kothur, Srivas Prasad, Yunmo Chen · 2026

LLM-based agents for text-to-SQL often struggle with latency-performance trade-off, where performance improvements come at the cost of latency or vice versa. We reformulate text-to-SQL generation with…

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Mathematics Preprint PDF DOI

Stability of Branching Multiplicities for Orthogonal Gelfand Pairs

Toshiyuki Kobayashi · 2026

We propose a structural framework for branching multiplicities in representation theory, emphasizing their behavior under variation of infinitesimal characters. For the orthogonal reductive pairs $(G,…

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Engineering Preprint PDF DOI

Characterizing pitch and roll torque coupling in insect-sized flapping-wing robots using a microfabricated gimbal

Aaron Weber, Daksh Dhingra, Sawyer B. Fuller · 2026

Sub-gram flapping-wing flying insect robots (FIRs) are challenging to model because of mechanical complexity in their wings, unsteady aerodynamic flow, and the difficulty of making precise measurement…

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AI & Data Science Preprint PDF DOI

Rethinking Cross-Domain Evaluation for Face Forgery Detection with Semantic Fine-grained Alignment and Mixture-of-Experts

Yuhan Luo, Tao Chen, Decheng Liu · 2026

Nowadays, visual data forgery detection plays an increasingly important role in social and economic security with the rapid development of generative models. Existing face forgery detectors still can'…

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Physics Preprint PDF DOI

Twisted traces and quantization of moduli stacks of 3d $\mathcal{N}=4$ Chern-Simons-matter theories

Leonardo Santilli · 2026

We conjecture, and show in a plethora of examples, that the sphere partition function of 3d $\mathcal{N}=4$ Chern-Simons-matter theories equals a sum of twisted traces on tensor products of Verma modu…

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Physics Preprint PDF DOI

Photometric Super-Resolution for Improving Galaxy Morphological Measurements using Conditional Generative Adversarial Networks

Samuel Kahn (UCSC), Ryan Hausen (Johns Hopkins), Hubert Bretonniere (UCSC), Nicole Drakos (UH), Brant Robertson (UCSC) · 2026

The measurement of galaxy morphological parameters from astronomical images features in a wide range of modern analyses, including galaxy evolution and cosmological weak lensing studies. The precision…

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AI & Data Science Preprint PDF DOI

Bayesian inference for disease transmission models informed by viral dynamics

Dylan J. Morris, Lauren Kennedy, Andrew J. Black · 2026

Infectious disease dynamics operate across multiple biological scales, with within-host viral dynamics being a key driver of between-host transmission. However, while models that explicitly link these…

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Computer Science Preprint PDF DOI

Geometric Comparisons of Electoral Rules Under Feedback

Sumit Mukherjee · 2026

We study how electoral rules shape polarization dynamics when voters and candidates both adapt to repeated election outcomes. We introduce two geometric primitives for comparing rules under this feedb…

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Physics Preprint PDF DOI

Calibration-Induced Systematics in SALT3 Training and Their Impact on Dark Energy Constraints from Stage IV Supernova Surveys

Kene Anumba, David 0. Jones, Richard Kessler, Daniel Scolnic, W. D'Arcy Kenworthy, Rebecca C. Chen, Bastien Carreres, Maria Vincenzi, Erik R. Peterson, Maria Acevedo, Ben Rose, Dillon Brout, Jillian Paulin, Rujuta A. Purohit, Rebekah Hounsell, The Roman Supernova Cosmology Project Infrastructure Team · 2026

In the coming years, the Vera Rubin Observatory's Legacy Survey of Space and Time (Rubin-LSST) and the Nancy Grace Roman Space Telescope's (Roman) High Latitude Time Domain Survey (HLTDS) are expected…

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Mathematics Preprint PDF DOI

Verma Bases for finite dimensional Representations of the orthosymplectic Lie superalgebra $\mathfrak{spo}(4|1)$

Bintao Cao, Ye Huang · 2026

We define the Verma vector system for each finite dimensional irreducible representation of the orthosymplectic Lie superalgebra $\mathfrak{spo}(4|1)$ with the highest weight $\lambda,$ via the condit…

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Mathematics Preprint PDF DOI

Verma Bases and Kashiwara-Nakashima Tableaux of $\mathfrak{sp}_4$

Bintao Cao, Ye Huang · 2026

We construct a one-to-one correspondence between the Verma basis vectors of a finite dimensional irreducible representation $L(\lambda)$ of the symplectic Lie algebra $\mathfrak{sp}_4$ and the Kashiwa…

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AI & Data Science Preprint PDF DOI

Plausible Reasoning and First-Order Plausible Logic

David Billington · 2026

Defeasible statements are statements that are likely, or probable, or usually true, but may occasionally be false. Plausible reasoning makes conclusions from statements that are either facts or defeas…

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Physics Preprint PDF DOI

Testing $\Lambda$CDM versus dynamical dark energy in one year: A DESI spectroscopic follow-up program for Rubin supernovae

Jannik Truong, Greg Aldering, Saul Perlmutter, David Rubin, David Schlegel · 2026

Combined cosmological probes currently indicate that best-fit values in the $w_0-w_a$ parametrization of dynamical dark energy deviate from $\Lambda$CDM by $\sim3\sigma$. In this work, we present a su…

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Physics Preprint PDF DOI

Smokescreen: A Python package for data vector blinding and encryption in cosmological analyses

Arthur Loureiro, Jessica Muir, Jonathan Blazek, Nora Elisa Chisari, Pedro H. Costa Ribeiro, Christos Georgiou, C. Danielle Leonard, Bruno Moraes, Marc Paterno, Nikolina Sarcevic, Tilman Troster, Sandro D. P. Vitenti, the LSST Dark Energy Science Collaboration · 2026

Smokescreen is an open-source Python library for data-vector concealment (blinding) in cosmological analyses. Data-vector blinding works by applying cosmology-dependent shifts to the observed data vec…

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