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Maximal prepositive cones on quaternion algebras with involution
Andrew Leader
https://arxiv.org/abs/2506.13426 https://arxiv.org/pdf…

Maximal prepositive cones on quaternion algebras with involution
We give a description of prepositive cones -- a notion of ordering on algebras with involution introduced by Astier and Unger -- in the specific context of quaternion algebras with involution. Our main result establishes that, for a broad class of quaternion algebras with involution, every prepositive cone is maximal.

Multi-wavelength ghost imaging: a review
Tong Tian, Sukyoon Oh, Christian Spielmann
https://arxiv.org/abs/2506.13423 https://arxiv.or…

Multi-wavelength ghost imaging: a review
Ghost imaging (GI) forms images from intensity-correlation data collected by a single-pixel detector, decoupling illumination and sensing. Since its quantum-photon origins, the technique has evolved through classical pseudothermal, computational and deep-learning variants to span an unprecedented spectral range--from extreme-ultraviolet (XUV) to terahertz (THz) waves and even matter waves. This review traces that evolution, highlighting how wavelength dictates modulators, detectors and propagat…

Betti numbers in the Random Connection Model for higher-dimensional simplicial complexes and the Boolean model
Dominik Pabst
https://arxiv.org/abs/2506.13429

Betti numbers in the Random Connection Model for higher-dimensional simplicial complexes and the Boolean model
Random simplicial complexes, as generalizations of random graphs, have become increasingly popular in the literature in recent years. In this paper, we consider a new model for a random simplicial complex that was introduced in arXiv:2506.11918, which generalizes the Random Connection Model in a natural way and includes several models used in the literature as special cases. We focus on the marked stationary case with vertices in $R^d\times A$, where the mark space $A$ is an arbitrary Borel spa…

This https://arxiv.org/abs/2411.13425 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csCR_…

Watermark under Fire: A Robustness Evaluation of LLM Watermarking
Various watermarking methods (``watermarkers'') have been proposed to identify LLM-generated texts; yet, due to the lack of unified evaluation platforms, many critical questions remain under-explored: i) What are the strengths/limitations of various watermarkers, especially their attack robustness? ii) How do various design choices impact their robustness? iii) How to optimally operate watermarkers in adversarial environments? To fill this gap, we systematize existing LLM watermarkers and water…

Sodium induced beneficial effects in wide bandgap Cu(In,Ga)S2 solar cell with 15.7% efficiency
Arivazhagan Valluvar Oli, Kulwinder Kaur, Michele Melchiorre, Aubin Jean-Claude Mireille Prot, Sevan Gharabeiki, Yucheng Hu, Gunnar Kusch, Adam Hultqvist, Tobias T\"orndahl, Wolfram Hempel, Wolfram Witte, Rachel A. Oliver, Susanne Siebentritt
https://

Sodium induced beneficial effects in wide bandgap Cu(In,Ga)S2 solar cell with 15.7% efficiency
This study underscores the pivotal role of sodium (Na) supply in optimizing the optoelectronic properties of wide bandgap (~1.6 eV) Cu(In,Ga)S2 (CIGS) thin film absorbers for high efficiency solar cells. Our findings demonstrate that the synergistic use of Na from the glass substrate, in conjunction with in-situ sodium fluoride (NaF) co-evaporation, significantly enhances the structural and optoelectronic properties of the CIGS. CIGS grown under either Na-deficient or excess conditions exhibits…

This https://arxiv.org/abs/2504.13423 has been replaced.
link: https://scholar.google.com/scholar?q=a

Mixed Fractional Information: Consistency of Dissipation Measures for Stable Laws
Symmetric alpha-stable (S alpha S) distributions with alpha<2 lack finite classical Fisher information. Building on Johnson's framework, we define Mixed Fractional Information (MFI) via the initial rate of relative entropy dissipation during interpolation between S alpha S laws with differing scales, v and s. We demonstrate two equivalent formulations for MFI in this specific S alpha S-to-S alpha S setting. The first involves the derivative D'(v) of the relative entropy between the two S alpha …

Replaced article(s) found for physics.hist-ph. https://arxiv.org/list/physics.hist-ph/new
[1/1]:
Evidence of Dark Energy Prior to its Discovery