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Mathematics Preprint PDF DOI

An improved non-linear Roth-type theorem in finite fields

Mark Lewko ยท 2026

Let $F$ be a finite field of odd characteristic. We prove that any set $A\subset F$ with $|A|\geq C|F|^{5/6}$ contains a nontrivial quadratic progression $(x, x+y, x+y^2), y\neq 0.$ For prime fields, โ€ฆ

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AI & Data Science Preprint PDF DOI

DGLight: DQN-Guided GRPO Fine-Tuning of Large Language Models for Traffic Signal Control

Chenbo Yu ยท 2026

Traffic signal control (TSC) plays a central role in reducing congestion and maintaining urban mobility. This dissertation introduces DGLight, a critic-guided reinforcement-learning framework for adapโ€ฆ

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Physics Preprint PDF DOI

Non-Abelian Particle-Loop, Fracton, and Planon Condensation in Cage-Net Models

Yifei Wang, Yu Zhao, Yingcheng Li, Hao Song, Yidun Wan ยท 2026

We present a framework for non-Abelian p-loop, fracton, and planon condensation in 3+1 dimensions by constructing extended cage-net fracton models using decoupled layers of the Hu-Geer-Wu (HGW) stringโ€ฆ

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Physics Preprint PDF DOI

Active Jurin's law

Birendra Mandal, Joydip Chaudhuri ยท 2026

Capillary rise is one of the classical problems in fluid mechanics and is traditionally described by Jurin's law, which balances capillary suction against hydrostatic pressure. Here we extend this claโ€ฆ

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Physics Preprint PDF DOI

Energy Loss of Newborn Magnetars by Schwinger Process

Chul Min Kim, Sang Pyo Kim, Remo Ruffini, Yu Wang, Shurui Zhang ยท 2026

We investigate electron--positron pair creation through the Schwinger process in newborn magnetars with millisecond spin periods and surface dipole fields close to or above the QED critical field, $B_โ€ฆ

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Physics Preprint PDF DOI

Two-Way Feedback Mechanisms between the Madden-Julian Oscillation and Mesoscale Convective Systems

Haobo Yang, Qiu Yang ยท 2026

The Madden-Julian Oscillation (MJO) is a planetary-scale convective system characterized by large-scale envelopes of enhanced and suppressed convection that contain numerous mesoscale convective systeโ€ฆ

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Mathematics Preprint PDF DOI

On Scott's odd induced subgraph conjecture and a related problem

Bo Ning ยท 2026

For a graph $G$, let $f_o(G)$ denote the maximum order of an induced subgraph of $G$ all of whose vertices have odd degree, and let $\chi(G)$ denote the chromatic number of $G$. Scott (CPC, 1992) provโ€ฆ

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Physics Preprint PDF DOI

Landauer-based study of transport in Chern insulator heterostructures

J. Luna-Ramos, A. Martin-Ruiz ยท 2026

We study charge transport through a trivial-topological-trivial junction described by the continuous Qi-Wu-Zhang model, which realizes a two-dimensional Chern-insulating phase. The central region is tโ€ฆ

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AI & Data Science Preprint PDF DOI

From Experience to Skill: Multi-Agent Generative Engine Optimization via Reusable Strategy Learning

Beining Wu, Fuyou Mao, Jiong Lin, Cheng Yang, Jiaxuan Lu, Yifu Guo, Siyu Zhang, Yifan Wu, Ying Huang, Fu Li ยท 2026

Generative engines (GEs) are reshaping information access by replacing ranked links with citation-grounded answers, yet current Generative Engine Optimization (GEO) methods optimize each instance in iโ€ฆ

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Computer Science Preprint PDF DOI

Tadabur: A Large-Scale Quran Audio Dataset

Faisal Alherran ยท 2026

Despite growing interest in Quranic data research, existing Quran datasets remain limited in both scale and diversity. To address this gap, we present Tadabur, a large-scale Quran audio dataset. Tadabโ€ฆ

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Mathematics Preprint PDF DOI

Deformation rigidity for Z/2 eigensections

Andriy Haydys, Siqi He, Willem Adriaan Salm ยท 2026

We prove a rigidity result for certain critical Z/2 eigensections of the Laplacian on S^2 associated to a flat real line bundle determined by a branch-point configuration. More precisely, we show thatโ€ฆ

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Mathematics Preprint PDF DOI

Chevalley property of module-finite Hopf algebras and discriminant ideals

Yimin Huang, Tiancheng Qi, Quanshui Wu, Ruipeng Zhu ยท 2026

In this paper, we study the Chevalley property of Cayley-Hamilton Hopf algebras in the sense of De Concini-Procesi-Reshetikhin-Rosso using discriminant ideals. For any affine Cayley-Hamilton Hopf algeโ€ฆ

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Physics Preprint PDF DOI

Efficient $n$-qubit entangling operations via a superconducting quantum router

Xuntao Wu, Haoxiong Yan, Gustav Andersson, Alexander Anferov, Christopher R. Conner, Yash J. Joshi, Bayan Karimi, Amber M. King, Shiheng Li, Howard L. Malc, Jacob M. Miller, Harsh Mishra, Hong Qiao, Minseok Ryu, Jian Shi, Andrew N. Cleland ยท 2026

Quantum algorithms on near-term quantum processors are typically executed using shallow quantum circuits composed of one- and two-qubit gates. However, as circuit depth and gate number increase, gate โ€ฆ

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Mathematics Preprint PDF DOI

Formalizing Wu-Ritt Method in Lean 4

Yuxuan Xiao, Hao Shen, Junyu Guo, Dingkang Wang, Lihong Zhi ยท 2026

We formalize the Wu-Ritt characteristic set method for the triangular decomposition of polynomial systems in the Lean 4 theorem prover. Our development includes the core algebraic notions of the methoโ€ฆ

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Mathematics Preprint PDF DOI

New results on proper orientation number of graphs

Xiaolin Wang, Guangmiao Yu ยท 2026

A proper orientation $D$ of an undirected graph $G$ is an orientation of $G$ such that $d_D^+(u)\not=d_D^+(v)$ for any edge $uv\in E(G)$. Denote the proper orientation number $\vec{\chi}(G)$ of an undโ€ฆ

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Mathematics Preprint PDF DOI

Equitable tree colouring of graphs

Yuping Gao, Allan Lo, Songling Shan ยท 2026

Let $k \in \mathbb{N}$ and let $G$ be a simple graph with maximum degree $\Delta$. A $k$-colouring $\varphi$ of $G$ is an assignment of colours from $\{1,2,\ldots,k\}$ to the vertices of $G$. We call โ€ฆ

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Mathematics Preprint PDF DOI

A Fixed-Prime Criterion for Reciprocals in Missing-Digit Sets

Scott Duke Kominers ยท 2026

We prove a structural upper bound on the $p$-adic valuation of denominators of rationals belonging to a missing-digit set $K_{m,D}$, generalizing a key step in recent work of Lin, Wu, and Yang [arXiv:โ€ฆ

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AI & Data Science Preprint PDF DOI

Online Covariance Estimation in Averaged SGD: Improved Batch-Mean Rates and Minimax Optimality via Trajectory Regression

Yijin Ni, Xiaoming Huo ยท 2026

We study online covariance matrix estimation for Polyak--Ruppert averaged stochastic gradient descent (SGD). The online batch-means estimator of Zhu, Chen and Wu (2023) achieves an operator-norm conveโ€ฆ

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Physics Preprint PDF DOI

Local topological markers for Chern insulators in ribbon geometry

Maks Repse, Tomaz Rejec, Jernej Mravlje ยท 2026

Local topological markers are used to characterize Chern insulators in the presence of spatial inhomogeneities, such as boundaries and disorder. In this paper, we study the local Chern marker in systeโ€ฆ

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AI & Data Science Preprint PDF DOI

Topological Characterization of Churn Flow and Unsupervised Correction to the Wu Flow-Regime Map in Small-Diameter Vertical Pipes

Brady Koenig, Sushovan Majhi, Atish Mitra, Abigail Stein, Burt Todd ยท 2026

Churn flow-the chaotic, oscillatory regime in vertical two-phase flow-has lacked a quantitative mathematical definition for over $40$ years. We introduce the first topology-based characterization usinโ€ฆ

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