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Mathematics Preprint PDF DOI

On numerical semigroups with embedding dimension four

Kazimierz Chomicz · 2026

We develop a geometric procedure for finding the Ap\'ery set of any numerical semigroup with embedding dimension four. We use this method to find the Frobenius numbers, genera, Betti elements, minimal…

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AI & Data Science Preprint PDF DOI

One Refiner to Unlock Them All: Inference-Time Reasoning Elicitation via Reinforcement Query Refinement

Yixiao Zhou, Dongzhou Cheng, zhiliang wu, Yi Yang, Yu Cheng, Hehe Fan · 2026

Large Language Models (LLMs) often fail to utilize their latent reasoning capabilities due to a distributional mismatch between ambiguous human inquiries and the structured logic required for machine …

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Mathematics Preprint PDF DOI

Generalized Howe curves of genus 4, 5, and 6 with completely decomposable Jacobians

Ryo Ohashi · 2026

Superspecial curves are important objects in number theory and algebraic geometry, and the existence in genus $g \geq 4$ remains an open problem for all but finitely many characteristics $p > 0$. As a…

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AI & Data Science Preprint PDF DOI

The Illusion of Learning from Observational Data: An Empirical Bayes Perspective

Bohan Wu, Sebastian Salazar, Donald P. Green, David M. Blei · 2026

Randomized experiments have long been the gold standard for scientists seeking to learn about cause and effect. When randomized experiments are infeasible, scientists often resort to observational stu…

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Computer Science Preprint PDF DOI

NIRVANA: A Comprehensive Dataset for Reproducing How Students Use Generative AI for Essay Writing

Andrew Jelson, Daniel Manesh, Sangwook Lee, Alice Jang, Daniel Dunlap, Tamara Maddox, Young-Ho Kim, Sang Won Lee · 2026

With the rapid adoption of AI writing assistants in education, educators and researchers need empirical evidence to understand the impact on student writing and inform effective pedagogical design. De…

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Mathematics Preprint PDF DOI

Normal-Euler excess for disjoint nonorientable surfaces in a closed $4$-manifold

Bennett Chow, Michael Freedman · 2026

Let \(M\) be a closed connected oriented topological \(4\)-manifold. We prove that if \(F_1,\dots,F_r\subset M\) are pairwise disjoint connected locally flat topologically embedded nonorientable surfa…

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Mathematics Preprint PDF DOI

Genus three Ceresa cycles and limit of archimedean heights

Souvik Goswami, Irene Spelta · 2026

For a one-parameter variation of biextension mixed Hodge structures, Brosnan and Pearlstein showed that the limit of the asymptotic height of the variation is given by a certain limit height of the ni…

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AI & Data Science Preprint PDF DOI

MIRANDA: MId-feature RANk-adversarial Domain Adaptation toward climate change-robust ecological forecasting with deep learning

Yuchang Jiang, Jan Dirk Wegner, Vivien Sainte Fare Garnot · 2026

Plant phenology modelling aims to predict the timing of seasonal phases, such as leaf-out or flowering, from meteorological time series. Reliable predictions are crucial for anticipating ecosystem res…

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Mathematics Preprint PDF DOI

Bordisms and unbounded $KK$-theory

Robin J. Deeley, Magnus Goffeng, Bram Mesland · 2026

This monograph studies $KK$-theory in its unbounded model. The central object is the $KK$-bordism group obtained by imposing the $KK$-bordism relation on unbounded $KK$-cycles. In the paradigm of nonc…

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Physics Preprint PDF DOI

Wilson loop in AdS$_3 \times S^3 \times T^4$ from quantum M2 brane

Arkady A. Tseytlin, Zihan Wang · 2026

Type IIB string theory on AdS$_3 \times S^3\times T^4$ with RR flux as the near-horizon limit of the D1-D5 solution is expected to be dual to a (4,4) supersymmetric 2d CFT parametrized by the integers…

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AI & Data Science Preprint PDF DOI

SEVerA: Verified Synthesis of Self-Evolving Agents

Debangshu Banerjee, Changming Xu, Eugene Ie, Ming Zhang, Daiyi Peng, Chu-Cheng Lin, Gagandeep Singh · 2026

Recent advances have shown the effectiveness of self-evolving LLM agents on tasks such as program repair and scientific discovery. In this paradigm, a planner LLM synthesizes an agent program that inv…

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Physics Preprint PDF DOI

Unlocking HST's Stellar Treasure Trove: Stellar Activity Minima for HAT-P-11 Offer Prime Windows for Transmission Spectroscopy

Prajwal Niraula, Benjamin V. Rackham, Julien de Wit, Daniel Apai, Mark S. Giampapa, David Berardo, Chia-Lung Lin · 2026

HAT-P-11 is a well-studied, active K dwarf hosting an eccentric, misaligned transiting sub-Neptune. As part of the HST Stellar Treasure Trove program (HST-AR-17551), we analyze absolutely calibrated o…

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Computer Science Preprint PDF DOI

Automating Sexual Injustice: Epistemic Injustice in Fembot Design and Feminist Directions for Equitable HRI

Surabhi Bhardwaj · 2026

Current AI-enabled female sex robots, or "fembots," are primarily designed to simulate female sexual responses through a lens of male-centric bias and pornographic stereotypes. This paper analyses fem…

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Mathematics Preprint PDF DOI

A Logvinenko-Sereda theorem for lacunary spectra

Miquel Saucedo, Sergey Tikhonov · 2026

For a function $F$ represented as $F(x)=\sum_{n=0}^\infty{f_n (x) e^{2 \pi i \lambda_n x}},$ where each $f_n$ satisfies $\operatorname{spec}(f_n) \subset [0, 1]$ and $(\lambda_n)_{n\geq 0}\subset \mat…

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AI & Data Science Preprint PDF DOI

Cerebra: A Multidisciplinary AI Board for Multimodal Dementia Characterization and Risk Assessment

Sheng Liu, Long Chen, Zeyun Zhao, Qinglin Gou, Qingyue Wei, Arjun Masurkar, Kevin M. Spiegler, Philip Kuball, Stefania C. Bray, Megan Bernath, Deanna R. Willis, Jiang Bian, Lei Xing, Eric Topol, Kyunghyun Cho, Yu Huang, Ruogu Fang, Narges Razavian, James Zou · 2026

Modern clinical practice increasingly depends on reasoning over heterogeneous, evolving, and incomplete patient data. Although recent advances in multimodal foundation models have improved performance…

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Mathematics Preprint PDF DOI

On superspecial hyperelliptic curves of genus 5 whose automorphism groups contain $(\mathbb{Z}/2\mathbb{Z})^3$

Ryo Ohashi, Momonari Kudo · 2026

While the numbers of superspecial curves of genus at most 3 are well understood, and several computational approaches have been developed to count superspecial curves of genus 4 with large automorphis…

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Computer Science Preprint PDF DOI

Cerebra: Aligning Implicit Knowledge in Interactive SQL Authoring

Yunfan Zhou, Qiming Shi, Zhongsu Luo, Xiwen Cai, Yanwei Huang, Dae Hyun Kim, Di Weng, Yingcai Wu · 2026

LLM-driven tools have significantly lowered barriers to writing SQL queries. However, user instructions are often underspecified, assuming the model understands implicit knowledge, such as dataset sch…

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Mathematics Preprint PDF DOI

Buchstaber, Ochanine, Krichever, and Witten genera

Mikhail Kornev · 2026

We introduce a new class of formal group laws whose modulus square construction yields Buchstaber's family of polynomials. This class is related to, but does not coincide with, the family of formal gr…

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Earth & Environmental Sciences Preprint PDF DOI

A Panchromatic JWST Spectrum of a Giant Starspot on the Fully Convective M-dwarf TOI-3884

C. A. Murray, L. Garcia, B. V. Rackham, Z. Berta-Thompson, A. D. Feinstein, S. J. Mercier, B. Charnay, L. Hebb, J. E. Libby-Roberts, Y. Rotman, A. Stephens, M. Timmermans, L. Welbanks, K. Barkaoui, Caleb I. Canas, M. Delamer, E. Ducrot, S. Kanodia, S. Mahadevan, J. P. Ninan, J. de Wit · 2026

TOI-3884 b is a rare super-Neptune transiting a fully convective M dwarf that hosts a persistent giant polar spot. Because the planet occults this active region during every transit, the system offers…

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Physics Preprint PDF DOI

Investigating quark star properties through baryon number density $(n)$ within the framework of $f(Q)$ gravity

Sourav Biswas, Debadri Bhattacharjee, Pradip Kumar Chattopadhyay, Nawal H. Siddig, Euaggelos E. Zotos, Laila Abdulaziz Al-Essa · 2026

In this paper, we construct a viable strange star model in the framework of the equation of state, $p_r=\frac{1}{3}(\rho-4B)$, proposed in the MIT bag model, where $B$ is termed as the bag constant. C…

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