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Computer Science Preprint PDF DOI

Akita: A High Usability Simulation Framework for Computer Architecture

Sabila Al Jannat, Ying Li, Mengyang He, Xuzhong Wang, Huizhi Zhao, Jingxiang Sun, Daoxuan Xu, Enze Xu, Yifan Sun · 2026

Computer architecture simulation is essential for evaluating new designs without the need for costly tapeout. The community has developed dozens of valuable simulators that have enabled significant ar…

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Economics & Finance Preprint PDF DOI

Distributionally Robust Insurance under Bregman-Wasserstein Divergence

Wenjun Jiang, Qingqing Zhang, Yiying Zhang · 2026

This paper investigates two optimal insurance contracting problems under distributional uncertainty from the perspective of a potential policyholder, utilizing a Bregman-Wasserstein (BW) ball to chara…

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Mathematics Preprint PDF DOI

Expected hyperbolic volumes of random beta polytopes

Zakhar Kabluchko, Philipp Schange · 2026

Let $X_1,\ldots,X_n$ be independent random points in the closed unit ball of $\mathbb{R}^d$. Assume that each $X_i$ has a beta distribution with parameter $\beta_i \ge -1$: if $\beta_i>-1$, then $X_i$…

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Mathematics Preprint PDF DOI

Finite-time blow-up in a class of chemotaxis systems with spatially heterogeneous diffusion sensitivity

Yashuang Zhao, Shijun Li, Shaopeng Xu · 2026

\indent In this paper, we study a class of parabolic-elliptic Keller-Segel systems with diffusion sensitivity dependent on spatial position, given by type \begin{equation} \left\{ \begin{array}{ll…

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Mathematics Preprint PDF DOI

Exotic Surfaces in 4-manifolds and Surface Corks

Cindy Zhang · 2026

A fundamental result in 4-manifold topology asserts that every exotic smooth structure on a simply connected closed 4-manifold is determined by a cork -- a codimension-zero compact, contractible subma…

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Mathematics Preprint PDF DOI

On the monotonicity of affine quermassintegrals

Shibing Chen, Yuanyuan Li, Xianduo Wang · 2026

Lutwak's affine quermassintegral theory is a foundational component of modern affine Brunn--Minkowski theory. Developed in the 1980s, it provides affine analogues of the classical quermassintegrals an…

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Mathematics Preprint PDF DOI

A note on quantitative stability in Hilbert spaces

Yifan Jing · 2026

We study stability theory in Hilbert spaces quantitatively. We prove that the inner product on the unit ball is $(k,\epsilon)$-stable for all $k\ge \exp(\pi/\epsilon)$, and it is not $(k,\epsilon)$-st…

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Mathematics Preprint PDF DOI

$\mathcal H$-Harmonic Bergman-Besov Spaces on the Real Hyperbolic Ball

A. Ersin Ureyen · 2026

Using the characterizations in terms of various differential operators including partial, normal, and tangential derivatives, we extend the family of Bergman spaces of $\mathcal H$-harmonic functions …

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AI & Data Science Preprint PDF DOI

SynSur: An end-to-end generative pipeline for synthetic industrial surface defect generation and detection

Paul Julius Kuhn, Mika Pommeranz, Arjan Kuijper, Saptarshi Neil Sinha · 2026

The bottleneck in learning-based industrial defect detection is often limited not by model capacity, but by the scarcity of labeled defect data: defects are rare, annotations are expensive, and collec…

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Mathematics Preprint PDF DOI

The Neumann problem for the generalized H\'enon equation. Local analysis

Alexander I. Nazarov, Alexandra P. Shcheglova · 2026

For the boundary value problem $$\left\{ \begin{array}{rcll} -\Delta_p u+u^{p-1}&=&|x|^{\alpha}u^{q-1}&\mbox{in }\Omega,\\ \frac{\displaystyle\partial u}{\displaystyle\partial{\bf n}}&=&0&\mbox{on }\p…

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Mathematics Preprint PDF DOI

On the geometry of circumcentric directions of cones

Yunier Bello-Cruz · 2026

Behling, Bello-Cruz, Lara-Urdaneta, Oviedo, and Santos showed that the circumcentric direction $d$ of a finitely generated polyhedral cone $\KK\subset\RR^n$ admits an inscribed Euclidean ball of radiu…

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Physics Preprint PDF DOI

Chemical transformation of MgH2/V2O5 composite to Mg-V-O rock salt and its influence on the electrochemical Li conversion and hydrogen storage characteristics of MgH2

D. Pukazhselvan, Ihsan Caha, Francisco J.A. Loureiro, Francis Leonard Deepak, Catarina de Lemos, Aliaksandr L. Shaula, Sergey M. Mikhalev, Duncan Paul Fagg · 2026

This study investigates the lithium conversion behavior of a hydrogen storage material based on vanadium oxide added magnesium hydride. To understand the chemical interaction between vanadium oxide an…

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Computer Science Preprint PDF DOI

Correcting One Deletion and One Substitution with a Constant Number of Reads

Yuling Li, Yubo Sun, Gennian Ge · 2026

In this paper, we investigate the problem of designing $(n, N; \mathcal{B})$-reconstruction codes for $N\in \{14,11,9,5\}$, where $\mathcal{B}$ is the single-deletion single-substitution ball function…

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Physics Preprint PDF DOI

Early-Time Nonlinear Growth in an Unstable Q-Ball Hairy Black Hole

Lang Cheng, Guangzhou Guo, Peng Wang, Haitang Yang · 2026

Early-time evolution away from an unstable equilibrium in a nonlinear system is often expected to be governed by the associated linear instability. Combining full nonlinear evolution with first- and s…

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Mathematics Preprint PDF DOI

Banach-compact operators, $\mathcal A$-precompactness, and frames in Hilbert $C^*$-modules

Denis Fufaev, Evgenij Troitsky · 2026

For a couple $\mathcal M$, $\mathcal N$ of Hilbert $C^*$-modules over a $C^*$-algebra $\mathcal A$, one has two notions of ``$\mathcal A$-rank 1 operators'': $\theta_{x,y}:\mathcal M\to\mathcal N$, $\…

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Mathematics Preprint PDF DOI

A Proof of Bala's General-$m$ Representation of the Harmonic Numbers

Tong Niu · 2026

For every nonzero integer $m$ and every integer $n \ge 1$, the $n$\textsuperscript{th} harmonic number $H_n = 1 + \tfrac12 + \dots + \tfrac1n$ satisfies the identity \[ H_n \;=\; \frac{1}{m}\,\sum_{…

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AI & Data Science Preprint PDF DOI

HubRouter: A Pluggable Sub-Quadratic Routing Primitive for Hybrid Sequence Models

Abhinaba Basu · 2026

We introduce HubRouter, a pluggable module that replaces O(n^2) attention layers with O(nM) hub-mediated routing, where M << n is a small number of learned hub tokens. We demonstrate it in two from-sc…

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Physics Preprint PDF DOI

Spontaneous spherical symmetry breaking of black holes with resonant hair

Jose Ferreira, Carlos A. R. Herdeiro, Eugen Radu, Miguel Zilhao · 2026

Black holes with resonant hair are static, spherical, electrically charged solutions of the Einstein-Maxwell-(gauged-)scalar system. Scalar self-interactions are mandatory for their existence. Initial…

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AI & Data Science Preprint PDF DOI

SketchVLM: Vision language models can annotate images to explain thoughts and guide users

Brandon Collins, Logan Bolton, Hung Huy Nguyen, Mohammad Reza Taesiri, Trung Bui, Anh Totti Nguyen · 2026

When answering questions about images, humans naturally point, label, and draw to explain their reasoning. In contrast, modern vision-language models (VLMs) such as Gemini-3-Pro and GPT-5 only respond…

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AI & Data Science Preprint PDF DOI

AUDITA: A New Dataset to Audit Humans vs. AI Skill at Audio QA

Tasnim Kabir, Dmytro Kurdydyk, Aadi Palnitkar, Liam Dorn, Ahmed Haj Ahmed, Jordan Lee Boyd-Graber · 2026

Existing audio question answering benchmarks largely emphasize sound event classification or caption-grounded queries, often enabling models to succeed through shortcut strategies, short-duration cues…

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