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Physics Preprint PDF DOI

Compartment Modelling of Multiphase Reactors using Unsupervised Clustering

Michael Mitterlindner, Maximilian Graber, Regina Kratzer, Markus Reichhartinger, Stefan Radl · 2026

Detailed Computational Fluid Dynamics (CFD) simulations are too computationally expensive for the real-time control and design optimization of multiphase flow reactors. To address these limitations, w…

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AI & Data Science Preprint PDF DOI

Leverage Laws: A Per-Task Framework for Human-Agent Collaboration

Stan Loosmore · 2026

We propose a per-task leverage ratio for human-agent collaboration: human work displaced by an agent, divided by the human time required to specify the task, resolve mid-run interrupts, and review the…

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AI & Data Science Preprint PDF DOI

A New Kind of Network? Review and Reference Implementation of Neural Cellular Automata

Martin Spitznagel, Janis Keuper · 2026

Stephen Wolfram proclaimed in his 2003 seminal work "A New Kind Of Science" that simple recursive programs in the form of Cellular Automata (CA) are a promising approach to replace currently used math…

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AI & Data Science Preprint PDF DOI

The Effects of Population Size on the Performance of BEAGLE GPU-Based Genetic Programming Runs

Nathan Haut, Ilya Basin, Ruchika Gupta, Marzieh Kianinejad, Zachary Perrico, Elijah Smith, Wolfgang Banzhaf · 2026

The Beagle framework, through GPU-based Genetic Programming, enables population dynamics previously unattainable (within practical time frames) by CPU-constrained Genetic Programming systems. This wor…

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Computer Science Preprint PDF DOI

Strategic Bidding in 6G Spectrum Auctions with Large Language Models

Ismail Lotfi, Ali Ghrayeb · 2026

Efficient and fair spectrum allocation is a central challenge in 6G networks, where massive connectivity and heterogeneous services continuously compete for limited radio resources. We investigate the…

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Mathematics Preprint PDF DOI

Malliavin calculus for signatures with applications to finance

Eduardo Abi Jaber, Clement Rey, Dimitri Sotnikov · 2026

Malliavin calculus is a powerful and general framework for the analysis of square-integrable random variables, but it often suffers from a lack of tractability and explicit representations. To address…

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Mathematics Preprint PDF DOI

Curve Closest to Sphere

Thando Nkomozake · 2026

We propose a solution to the tenth of Professor Clark Kimberling's unsolved problems found on https://faculty.evansville.edu/ck6/integer/unsolved.html. We are required to find the parametric equations…

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Mathematics Preprint PDF DOI

A provably stable numerical method for the anisotropic diffusion equation in confined magnetic fields: Curvilinear coordinates and multi-block domains

Dean Muir, Kenneth Duru, Stuart Hudson, Matthew Hole · 2026

We present a robust and accurate numerical method for the anisotropic diffusion equation in curvilinear coordinates. This study extends the recent work [Muir et al., Computer Physics Communications, 2…

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Mathematics Preprint PDF DOI

Composition operators and Rational Inner Functions on the bidisc: A geometric approach

Athanasios Beslikas · 2026

We study composition operators acting on the weighted Bergman spaces on the bidisc, i.e. $C_{\Phi}:A^2_{\beta}(\mathbb{D}^2)\to A^2_{\beta}(\mathbb{D}^2)$ where $\Phi$ is induced by rational inner fun…

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Physics Preprint PDF DOI

Closing the Loop: Deploying Auto-Generating Digital Twins for Particle Accelerators

A. D. Brynes, M. King, K. R. L. Baker, R. Banerjee, R. Clarke, D. J. Dunning, J. K. Jones, M. Leputa, A. E. Pollard, M. Romanovschi, M. Shaw, N. Ziyan · 2026

The simulation of a physical system in a virtual replica, known as a digital twin, is a useful way to interrogate the system non-invasively, providing the ability to perform predictive maintenance and…

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Physics Preprint PDF DOI

Brillouin-Enhanced Photonic Stepped-Frequency Radar

Ziqian Zhang, Ryan L. Russell, Choon Kong Lai, Benjamin J. Eggleton · 2026

Photonic stepped-frequency (SF) radar offers high range resolution and only requires low-speed driving electronics, but existing architectures face challenges in achieving low phase noise and uniform …

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AI & Data Science Preprint PDF DOI

LogosKG: Hardware-Optimized Scalable and Interpretable Knowledge Graph Retrieval

He Cheng, Yifu Wu, Saksham Khatwani, Maya Kruse, Dmitriy Dligach, Timothy A. Miller, Majid Afshar, Yanjun Gao · 2026

Knowledge graphs (KGs) are increasingly integrated with large language models (LLMs) to provide structured, verifiable reasoning. A core operation in this integration is multi-hop retrieval, yet exist…

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Economics & Finance Preprint PDF DOI

From Exposure to Adoption: Generative AI in European Workplaces

Golo Henseke · 2026

This study examines who adopts generative AI and whether early adoption has begun to reshape the task content of jobs across 35 European countries. Adoption ranges from under 3% to 25%. Occupational e…

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Mathematics Preprint PDF DOI

An elementary proof of Sierksma's conjecture for seven points in the plane

Pablo Soberon · 2026

We give a new simple geometric proof that any seven points in the plane have four Tverberg partitions into three sets. This is the only confirmed non-trivial case of Sierksma's conjecture. Earlier pro…

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AI & Data Science Preprint PDF DOI

Which Small-Sample Correction Should Be Used When Analyzing Stepped-Wedge Designs with Time-Varying Treatment Effects?

Yongdong Ouyang, Monica Taljaard, James P. Hughes, Fan Li · 2026

Stepped-wedge cluster randomized trials (SW-CRTs) evaluate interventions rolled out across clusters over time. Standard analyses typically use immediate-treatment (IT) models, which assume effects beg…

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Engineering Preprint PDF DOI

A Model and Estimation of the Bitcoin Transaction Fee

Daniel Aronoff, Kristian Praizner, Armin Sabouri · 2026

Bitcoin transaction fees will become more important as the block subsidy declines, but fee formation is hard to study with blockchain data alone because the relevant queueing environment is unobserved…

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Mathematics Preprint PDF DOI

On convergence rates of subgradient descent on semialgebraic functions

Evgenii Chzhen, Sholom Schechtman · 2026

We analyze the constant step size subgradient method on nonsmooth, nonconvex functions. We identify geometric assumptions on the objective function under which i) its domain admits a partition (strati…

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Mathematics Preprint PDF DOI

\texorpdfstring{$D$}{D}-maximal many-one degrees contain least finite-one degrees

Patrizio Cintioli · 2026

Richter, Stephan, and Zhang asked whether every nonrecursive many-one degree contains a least finite-one degree. We prove this for every nonrecursive \ce\ many-one degree containing a $D$-maximal set.…

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Physics Preprint PDF DOI

Sensing of Low-Frequency Electric Fields Using Rydberg EIT within the Fisher Information Framework

Tianyu Zhou, Haipeng Xie, Xin Wang · 2026

Rydberg atoms, which possess exceptionally large electric dipole moments, offer a promising route for electric field sensing as well as metrology traceable to the International System of Units (SI); h…

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Computer Science Preprint PDF DOI

Orthogonal Strip Partitioning of Polygons: Lattice-Theoretic Algorithms and Lower Bounds

Jaehoon Chung · 2026

We study a variant of a polygon partition problem, introduced by Chung, Iwama, Liao, and Ahn [ISAAC'25]. Given orthogonal unit vectors $\mathbf{u},\mathbf{v}\in \mathbb{R}^2$ and a polygon $P$ with $n…

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