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Mathematics Preprint PDF DOI

Kazhdan-Lusztig Basis and Optimization

Tom Goertzen, Geordie Williamson ยท 2026

We describe a conjectural approach to obtaining canonical bases of the Hecke algebra at $q=1$ via continuous quadratic optimization. We focus on Specht modules $S^\lambda$ and proper cones inside $S^\โ€ฆ

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AI & Data Science Preprint PDF DOI

Prioritizing the Best: Incentivizing Reliable Multimodal Reasoning by Rewarding Beyond Answer Correctness

Mengzhao Jia, Zhihan Zhang, Meng Jiang ยท 2026

Reinforcement Learning with Verifiable Rewards (RLVR) improves multimodal reasoning by rewarding verifiable final answers. Yet answer-correct trajectories may still rely on incomplete derivations, weaโ€ฆ

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Physics Preprint PDF DOI

String-inspired Gauss-Bonnet Gravity Inflation and ACT

S.D. Odintsov, V.K. Oikonomou, Pyotr Tsyba, Olga Razina, Dauren Rakhatov ยท 2026

In this article we present a systematic observational verification of the ghost-free string-inspired $f(R,\mathcal{G})$ model, where the Gauss-Bonnet invariant is non-minimally coupled to an auxiliaryโ€ฆ

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AI & Data Science Preprint PDF DOI

An Empirical Study of Multi-Generation Sampling for Jailbreak Detection in Large Language Models

Hanrui Luo, Shreyank N Gowda ยท 2026

Detecting jailbreak behaviour in large language models remains challenging, particularly when strongly aligned models produce harmful outputs only rarely. In this work, we present an empirical study oโ€ฆ

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Computer Science Preprint PDF DOI

A taxonomy for controlling (in)consistency

Marcelo E. Coniglio, Rafael Ongaratto ยท 2026

In this article, the hierarchy of LFIs L$_n^k$, Logics of Controlled Consistency (LCC), is introduced. Inspired by da Costa's original C$_n$ systems, this hierarchy can represent different degrees of โ€ฆ

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AI & Data Science Preprint PDF DOI

JASPER: Joint Bayesian Analysis of Spatial Expression via Regression

Pritam Dey, Rajarshi Guhaniyogi, Yang Ni, Bani K. Mallick ยท 2026

Spatially resolved transcriptomics is a fast-developing set of technologies that enables the measurement of localized gene expression across spatial locations in a sample. Detecting spatially varying โ€ฆ

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AI & Data Science Preprint PDF DOI

Beyond One Output: Visualizing and Comparing Distributions of Language Model Generations

Emily Reif, Claire Yang, Jared Hwang, Deniz Nazar, Noah A. Smith, Jeff Heer ยท 2026

Users typically interact with and evaluate language models via single outputs, but each output is just one sample from a broad distribution of possible completions. This interaction hides distributionโ€ฆ

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Physics Preprint PDF DOI

Non-supersymmetric heterotic strings on $AdS_{4}\times S^{3}\times S^{3}$

Ivano Basile, Daniel Robbins, Hassaan Saleem ยท 2026

We analyze the stability properties of a family of anti-de Sitter flux compactifications of the tachyon-free non-supersymmetric heterotic string in ten dimensions. In contrast with simpler such solutiโ€ฆ

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Physics Preprint PDF DOI

If at First You Don't Succeed, Trispectrum: I. Estimating the Matter Power Spectrum Covariance with Higher-Order Statistics

Samuel Goldstein, Kendrick M. Smith, Utkarsh Giri, Moritz Munchmeyer ยท 2026

We present a method to estimate non-Gaussian power spectrum covariance matrices by directly measuring the response of the small-scale power spectrum to long-wavelength perturbations via bispectrum andโ€ฆ

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AI & Data Science Preprint PDF DOI

T-REN: Learning Text-Aligned Region Tokens Improves Dense Vision-Language Alignment and Scalability

Savya Khosla, Sethuraman T V, Aryan Chadha, Alex Schwing, Derek Hoiem ยท 2026

Despite recent progress, vision-language encoders struggle with two core limitations: (1) weak alignment between language and dense vision features, which hurts tasks like open-vocabulary semantic segโ€ฆ

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AI & Data Science Preprint PDF DOI

Back into Plato's Cave: Examining Cross-modal Representational Convergence at Scale

A. Sophia Koepke, Daniil Zverev, Shiry Ginosar, Alexei A. Efros ยท 2026

The Platonic Representation Hypothesis suggests that neural networks trained on different modalities (e.g., text and images) align and eventually converge toward the same representation of reality. Ifโ€ฆ

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Physics Preprint PDF DOI

New Physics in inclusive $\bar{B} \to X_c \ell \bar{\nu}$ decays

Alexandre Carvunis, Gael Finauri, Paolo Gambino, Martin Jung, Sandro Machler ยท 2026

We present the first global phenomenological fit of inclusive $\bar B\to X_c\ell\bar\nu$ observables to all available experimental data allowing for generic dimension-six New Physics interactions in tโ€ฆ

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Mathematics Preprint PDF DOI

Unirational algebraic groups and tame ramification

Otto Overkamp, Ismaele Vanni ยท 2026

Let $\mathcal{O}_K$ be a complete discrete valuation ring with field of fractions $K$ and algebraically closed residue field $k.$ Let $G$ be a smooth connected commutative algebraic group over $K$ whiโ€ฆ

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Physics Preprint PDF DOI

Active-region Modulation of Subsurface Meridional Flows and Magnetic Flux Transport on the Sun

Anisha Sen, S.P. Rajaguru, Ruizhu Chen, Junwei Zhao, Shukur Kholikov ยท 2026

Using time-distance helioseismology applied to 14-years of SDO/HMI observations spanning solar cycle 24 and rising phase of cycle 25, we present evidence that meridional flows in the lower half of theโ€ฆ

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AI & Data Science Preprint PDF DOI

StepPO: Step-Aligned Policy Optimization for Agentic Reinforcement Learning

Daoyu Wang, Qingchuan Li, Mingyue Cheng, Jie Ouyang, Shuo Yu, Qi Liu, Enhong Chen ยท 2026

General agents have given rise to phenomenal applications such as OpenClaw and Claude Code. As these agent systems (a.k.a. Harnesses) strive for bolder goals, they demand increasingly stronger agenticโ€ฆ

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Computer Science Preprint PDF DOI

Co-Located Tests, Better AI Code: How Test Syntax Structure Affects Foundation Model Code Generation

Eric Jacopin ยท 2026

AI coding assistants increasingly generate code alongside tests. How developers structure test code, whether inline with the implementation or in separate blocks, has traditionally been a matter of teโ€ฆ

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Physics Preprint PDF DOI

From Gaia to GaiaNIR: II. A new view of the Milky Way bar

O. Jimenez-Arranz, M. Scholch, S. Khanna, L. Chemin, M. Romero-Gomez, J. A. S. Hunt, R. Drimmel, E. Poggio, D. Hobbs, P. J. McMillan, I. Henum, R. P. Church ยท 2026

The Milky Way (MW) hosts a central bar whose pattern speed, orientation, and length remain uncertain, largely due to observational biases and selection effects, despite the transformative data provideโ€ฆ

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Mathematics Preprint PDF DOI

On Coble surfaces and their automorphisms

Federico Pieroni ยท 2026

Given a complex Coble surface $X$ with irreducible boundary $C$, we consider a specific automorphism $T : X \to X$, initially defined by Pompilj. We show that there are two families of Coble surfaces โ€ฆ

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AI & Data Science Preprint PDF DOI

On the Importance and Evaluation of Narrativity in Natural Language AI Explanations

Mateusz Cedro, David Martens ยท 2026

Explainable AI (XAI) aims to make the behaviour of machine learning models interpretable, yet many explanation methods remain difficult to understand. The integration of Natural Language Generation inโ€ฆ

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Earth & Environmental Sciences Preprint PDF DOI

Sensitivity of Dry Lava Planet Atmospheric Emission Spectra to Changes in Lava Compositions

Christiaan P. A. van Buchem, Rojita Buddhacharya, Mantas Zilinskas, Sebastian Zieba, Yamila Miguel, Wim van Westrenen ยท 2026

The atmospheres of hot rocky exoplanets are among the first primary targets of the JWST. Interpreting their atmospheric spectra requires understanding the link between silicate lava compositions and oโ€ฆ

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