Tootfinder

Higher-order Stirling cycle and subset triangles: Total positivity, continued fractions and real-rootedness
Bishal Deb, Alan D. Sokal
https://arxiv.org/abs/2507.18959 https://…

Higher-order Stirling cycle and subset triangles: Total positivity, continued fractions and real-rootedness
Given a lower-triangular matrix of real numbers, one can ask the following four total-positivity questions: total positivity of the triangle itself; total positivity of its row-reversal; Toeplitz-total positivity of its row sequences (equivalent to negative-real-rootedness of the row-generating polynomials); and coefficientwise Hankel-total positivity of the sequence of row-generating polynomials. In this paper, we introduce two infinite families of lower-triangular matrices generalising the St…

Assessment of tabulated-chemistry models for lean premixed strained hydrogen flames with low-dimensional manifolds
Alessandro Porcarelli, Pasquale Eduardo Lapenna, Francesco Creta, Ivan Langella
https://arxiv.org/abs/2510.03324

Assessment of tabulated-chemistry models for lean premixed strained hydrogen flames with low-dimensional manifolds
This study presents a comprehensive a priori analysis of tabulated-chemistry models for both laminar and turbulent lean premixed hydrogen flames in strained counterflow configuration. Particular focus is drawn on differential and preferential diffusion effects and the synergistic interaction of thermodiffusive instabilities and turbulence that existing models struggle to capture. Through detailed assessment of various modelling approaches at unfiltered and filtered grids, we identify significan…

Differential Analysis of Pseudo Haptic Feedback: Novel Comparative Study of Visual and Auditory Cue Integration for Psychophysical Evaluation
Nishant Gautam, Somya Sharma, Peter Corcoran, Kaspar Althoefer
https://arxiv.org/abs/2510.09570

Differential Analysis of Pseudo Haptic Feedback: Novel Comparative Study of Visual and Auditory Cue Integration for Psychophysical Evaluation
Pseudo-haptics exploit carefully crafted visual or auditory cues to trick the brain into "feeling" forces that are never physically applied, offering a low-cost alternative to traditional haptic hardware. Here, we present a comparative psychophysical study that quantifies how visual and auditory stimuli combine to evoke pseudo-haptic pressure sensations on a commodity tablet. Using a Unity-based Rollball game, participants (n = 4) guided a virtual ball across three textured terrains while their…

ODYSSEY: Open-World Quadrupeds Exploration and Manipulation for Long-Horizon Tasks
Kaijun Wang, Liqin Lu, Mingyu Liu, Jianuo Jiang, Zeju Li, Bolin Zhang, Wancai Zheng, Xinyi Yu, Hao Chen, Chunhua Shen
https://arxiv.org/abs/2508.08240

ODYSSEY: Open-World Quadrupeds Exploration and Manipulation for Long-Horizon Tasks
Language-guided long-horizon mobile manipulation has long been a grand challenge in embodied semantic reasoning, generalizable manipulation, and adaptive locomotion. Three fundamental limitations hinder progress: First, although large language models have improved spatial reasoning and task planning through semantic priors, existing implementations remain confined to tabletop scenarios, failing to address the constrained perception and limited actuation ranges of mobile platforms. Second, curre…

Forgotten treasures in the HST/FOC UV imaging polarimetric archives of active galactic nuclei -- IV. 5 Orphaned AGNs
Thibault Barnouin (Observatoire Astronomique de Strasbourg, Universit\'e de Strasbourg, France), Fr\'ed\'eric Marin (Observatoire Astronomique de Strasbourg, Universit\'e de Strasbourg, France), Enrique Lopez-Rodriguez (Department of Physics and Astronomy, University of South Carolina, USA, Kavli Institute for Particle Astrophysics and Cosmology, Stanford…

Forgotten treasures in the HST/FOC UV imaging polarimetric archives of active galactic nuclei -- IV. 5 Orphaned AGNs
The Faint Object Camera (FOC) onboard the Hubble Space Telescope (HST) acquired high-resolution, spatially resolved polarimetric images of nearby Active Galactic Nuclei (AGNs) in the near ultraviolet (near-UV) band. Among the 25 individual targets in the polarized archives, 8 had no published analysis until the beginning of this series of papers. We tackle the last 5 targets in the following. In this paper, we finalize the publication of near-UV imaging polarimetry of AGNs in the HST/FOC archiv…

Generative KI f\"ur TA
Wolfgang Eppler, Reinhard Heil
https://arxiv.org/abs/2509.02053 https://arxiv.org/pdf/2509.02053…

Generative KI für TA
Many scientists use generative AI in their scientific work. People working in technology assessment (TA) are no exception. TA's approach to generative AI is twofold: on the one hand, generative AI is used for TA work, and on the other hand, generative AI is the subject of TA research. After briefly outlining the phenomenon of generative AI and formulating requirements for its use in TA, the following article discusses in detail the structural causes of the problems associated with it. Although …