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Mathematics Preprint PDF DOI

Rational characteristic classes of bundles with fibre a product of spheres

Jan McGarry-Furriol · 2026

We prove the existence of many non-trivial characteristic classes of smooth oriented bundles with fibre a product $ S^{n}\times S^{n} $ of odd-dimensional spheres. We do so by proving injectivity of t…

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Mathematics Preprint PDF DOI

Multiscale Modeling for Time-harmonic Maxwell equations with impedance boundary conditions in highly heterogeneous media

Xiang Zhong, Eric T. Chung, Xingguang Jin · 2026

Modeling time-harmonic Maxwell problems in heterogeneous media presents significant mathematical and computational challenges. Due to the inherent non-elliptic structure and non-coercive nature of Max…

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Mathematics Preprint PDF DOI

Components of strata of k-differentials and their orbit closures

Paul Apisa, Juliet Aygun · 2026

We obtain a complete classification of components of strata of holomorphic and meromorphic k-differentials. We show that, when genus is at least two and outside of explicit exceptions when k < 4, ther…

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Physics Preprint PDF DOI

Proximity Ferroelectricity Driven by Mobile High-Miller-Index Domain Walls

Changming Ke, Shi Liu · 2026

Wurtzite ferroelectrics such as scandium-doped aluminum nitride (AlScN) are promising for next-generation memory because of their compatibility with semiconductor processes and strong spontaneous pola…

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Mathematics Preprint PDF DOI

On a Keller-Segel type equation to model Brain Microvascular Endothelial Cells growth's patterns

B Ambrosio, A Garroudji, S Fitzsimons, H Zaag, F.M. Elahi · 2026

This article presents a partial differential equation (PDE) of Keller-Segel (KS) type that reproduces patterns commonly observed during the growth of brain microvasculature. We provide mathematical in…

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Mathematics Preprint PDF DOI

On Additive Representations of Integers by Binomial Coefficients

Alexander Povolotsky · 2026

For a fixed integer $k \ge 0$, consider representations of positive integers as sums of binomial coefficients of the form $\binom{n}{k}$. While exact minimal bounds for the number of required summands…

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AI & Data Science Preprint PDF DOI

NeSyCat: A Monad-Based Categorical Semantics of the Neurosymbolic ULLER Framework

Daniel Romero Schellhorn, Till Mossakowski · 2026

ULLER (Unified Language for LEarning and Reasoning) offers a unified first-order logic (FOL) syntax, enabling its knowledge bases to be used directly across a wide range of neurosymbolic systems. The …

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Computer Science Preprint PDF DOI

A Theory of Hanoi Omega-Automata and Games

Emmanuel Filiot, Allen Joseph, Guillermo A. Perez, Saina Sunny · 2026

The Hanoi Omega-Automata (HOA) format has established itself as the definitive standard for encoding $\omega$-regular automata in modern synthesis tools. While HOA is widely adopted due to its succinc…

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Physics Preprint PDF DOI

Geometry selective colossal negative dielectric permittivity in CaFe2O4 nanostructures

Sourav Sarkar, Kalyan Mandal · 2026

Negative permittivity metamaterial is a scientifically rich avenue due to its tremendous application in several arena of materials research including novel superlens, band-gap materials, invisibility …

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Computer Science Preprint PDF DOI

Prism-Reranker: Beyond Relevance Scoring -- Jointly Producing Contributions and Evidence for Agentic Retrieval

Dun Zhang · 2026

Modern retrieval pipelines increasingly serve downstream consumers like retrieval-augmented generation (RAG) and autonomous agents that need more than a scalar relevance score. A reranker that only te…

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Physics Preprint PDF DOI

Two Exciting High-redshift Galaxy Candidates Turn Out to Be Two Exciting Ultra-cool Brown Dwarfs

Marusa Bradac, Chris Willott, Yoshihisa Asada, Loic Albert, Gregor Rihtarsic, Anishya Harshan, Jon Judez, Nicholas S. Martis, Andrea Ferrara, Abdurro'uf, Joseph F. V. Allingham, Volker Bromm, John Chisholm, Dan Coe, Guillaume Desprez, Jose M. Diego, Andreas L. Faisst, Seiji Fujimoto, Tiger Yu-Yang Hsiao, Kohei Inayoshi, Anton M. Koekemoer, Vasily Kokorev, Brian C. Lemaux, Paulo A. A. Lopes, Danilo Marchesini, Vladan Markov, Gael Noirot, Richard Pan, Scott W. Randall, Johan Richard, Luke Robbins, Ghassan T. E. Sarrouh, Marcin Sawicki, Tim Schrabback, Roberta Tripodi, Eros Vanzella, Rogier A. Windhorst · 2026

From the onset of observations of JWST we have discovered unexpectedly luminous galaxies at redshifts $z>10$ and as high as $z=14$. With their discovery, the question immediately followed as to where …

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Economics & Finance Preprint PDF DOI

Rigidity and default in production networks

Giacomo Como, Fabio Fagnani, Elisa Luciano, Alessandro Milazzo, Marco Scarsini · 2026

This paper studies the transmission of productivity shocks in general equilibrium production networks, when firms in different sectors operate under informational rigidity and rely on external debt. R…

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Mathematics Preprint PDF DOI

Super-Chevalley Restriction and Relative Lie Algebra Cohomology over the 2|3 Algebra

Chi-Ming Chang · 2026

Let $A:=\mathbb{C}[z_+,z_-]\otimes \Lambda(\theta_1,\theta_2,\theta_3)$, with $z_\pm$ even and $\theta_1,\theta_2,\theta_3$ odd. For a reductive Lie algebra $\mathfrak g$, let $\mathfrak g[A]:=\mathfr…

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Physics Preprint PDF DOI

Supermassive stars with embedded stellar black hole cores: dense assembling star clusters as faint multiple Little Red Dot systems

Antti Rantala · 2026

Numerical simulations have established that star clusters with densities comparable to the high redshift ($z>6$-$10$) James Webb Space Telescope (JWST) proto globular clusters may build up extremely m…

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Physics Preprint PDF DOI

The Effects of Accretion Feedback on Stellar Evolution in AGN Disks

Alexander J. Dittmann, Matteo Cantiello · 2026

Stars embedded in the accretion disks of active galactic nuclei (AGN) can accrete rapidly from their surroundings, dramatically altering their structure and evolution. However, feedback from the relea…

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Physics Preprint PDF DOI

Retrieving intrinsic polarization anisotropies of nanostructures using differential Mueller matrix polarimetry

Jeeban Kumar Nayak, Ebru Buhara, Olivier J.F. Martin · 2026

Accurate characterization of polarization dependent light matter interactions in nanostructured systems is paramount for the development of chiral metasurfaces. It is also often challenging, because m…

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Physics Preprint PDF DOI

High Dynamic Range enhancement in Mueller matrix polarimetry

Lourdes Camblor-Navarro, Iago Pardo, Oriol Arteaga · 2026

Mueller matrix (MM) polarimetry is an effective, non-invasive tool for retrieving information from complex media. However, the finite dynamic range of optical detectors poses a significant challenge w…

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AI & Data Science Preprint PDF DOI

Optimal Stopping in Sequential Clinical Prediction

Hui-Mean Foo, Yuan-chin Ivan Chang · 2026

Most clinical prediction studies are developed from retrospective cohorts and reported as if all patient information were observed at once. In practice, clinicians face a more consequential question: …

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Computer Science Preprint PDF DOI

Call-Chain-Aware LLM-Based Test Generation for Java Projects

Guancheng Wang, Qinghua Xu, Lionel C. Briand, Zhaoqiang Guo, Kui Liu · 2026

Large language models (LLMs) have recently shown strong potential for generating project-level unit tests. However, existing state-of-the-art approaches primarily rely on execution-path information to…

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Computer Science Preprint PDF DOI

Recursive Structure of Hulls of PRM Codes

Yufeng Song, Qin Yue · 2026

For a nonnegative integer $r$ and a positive integer $v$ satisfying \[ \frac{r(q-1)}{2}<v<\frac{(r+1)(q-1)}{2}, \] we define the combinatorial numbers \[ A_r(v)= \begin{cases} \display…

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