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@arXiv_mathOC_bot@mastoxiv.page
2025-09-03 11:59:43

Subgradient Splitting Methods for Nonsmooth Fractional Programming with Fixed-Point Constraints
Mootta Prangprakhon, Nimit Nimana
arxiv.org/abs/2509.01151

Subgradient Splitting Methods for Nonsmooth Fractional Programming with Fixed-Point Constraints
We consider a class of nonsmooth fractional programming problems with fixed-point constraints, where the numerator is convex and the denominator is concave. To solve this problem, we propose splitting algorithms that compute subgradient steps separately for the convex numerator and the concave denominator. These methods offer a straightforward approach by eliminating the need to solve subproblems at each iteration. By leveraging fixed-point constraints, the proposed algorithms are particularly …

@arXiv_physicschemph_bot@mastoxiv.page
2025-10-01 08:10:07

Natural Excitation Framework for Defining the External Space: Uncontracted and Internally Contracted Multireference Nonorthogonal Wavefunction Theories
Matheus M. F. Moraes, Lee M. Thompson
arxiv.org/abs/2509.25436

Natural Excitation Framework for Defining the External Space: Uncontracted and Internally Contracted Multireference Nonorthogonal Wavefunction Theories
In this communication, we examine new formalisms for the construction of the external space when correlating reference wavefunctions built from nonorthogonal determinant expansions. Defining the external space in nonorthogonal approaches is challenging, as every substitution from the reference wavefunction can potentially mix both internal and external configurations. As a result, post-nonorthogonal methods are plagued by internal contamination and linear dependencies in the external space, whi…

@arXiv_csCV_bot@mastoxiv.page
2025-10-03 10:27:11

kabr-tools: Automated Framework for Multi-Species Behavioral Monitoring
Jenna Kline, Maksim Kholiavchenko, Samuel Stevens, Nina van Tiel, Alison Zhong, Namrata Banerji, Alec Sheets, Sowbaranika Balasubramaniam, Isla Duporge, Matthew Thompson, Elizabeth Campolongo, Jackson Miliko, Neil Rosser, Tanya Berger-Wolf, Charles V. Stewart, Daniel I. Rubenstein

kabr-tools: Automated Framework for Multi-Species Behavioral Monitoring
A comprehensive understanding of animal behavior ecology depends on scalable approaches to quantify and interpret complex, multidimensional behavioral patterns. Traditional field observations are often limited in scope, time-consuming, and labor-intensive, hindering the assessment of behavioral responses across landscapes. To address this, we present kabr-tools (Kenyan Animal Behavior Recognition Tools), an open-source package for automated multi-species behavioral monitoring. This framework in…

@arXiv_csSD_bot@mastoxiv.page
2025-09-03 08:35:22

Algorithms for Collaborative Harmonization
Eyal Briman, Eyal Leizerovich, Nimrod Talmon
arxiv.org/abs/2509.00120 arxiv.org/pdf/2509.00120…

Algorithms for Collaborative Harmonization
We consider a specific scenario of text aggregation, in the realm of musical harmonization. Musical harmonization shares similarities with text aggregation, however the language of harmony is more structured than general text. Concretely, given a set of harmonization suggestions for a given musical melody, our interest lies in devising aggregation algorithms that yield an harmonization sequence that satisfies the following two key criteria: (1) an effective representation of the collective sugg…

@arXiv_physicscompph_bot@mastoxiv.page
2025-10-01 08:38:57

The uniqueness of inverse scattering problems, reciprocity principles, and nonradiating sources related to low-signature structures
Johan Helsing, Anders Karlsson
arxiv.org/abs/2509.26304

The uniqueness of inverse scattering problems, reciprocity principles, and nonradiating sources related to low-signature structures
This paper is about perfectly electrically conducting structures designed to produce negligible scattered power when exposed to a time-harmonic plane electromagnetic wave. The structures feature cavities capable of concealing objects. Theoretical investigations of the properties of the structures combined with accurate numerical computations lead to three key findings: the first concerns the uniqueness of the solution to an inverse scattering problem, the second establishes a reciprocity relati…

@axbom@axbom.me
2025-10-29 12:27:59
@… Ja det där underlättar en del. Fick mig att minnas “kreditkortet” med genomskinliga rutor för att lättare avskilja delar av OCR-numret när man skrev av det. Och så hittade jag den här manicken! 😄

https://www.smartasaker.se/sv/ocr-lasare
@arXiv_hepth_bot@mastoxiv.page
2025-09-30 11:36:01

Loop-Level Double Copy Relations from Forward Limits
Qu Cao, Song He, Yong Zhang, Fan Zhu
arxiv.org/abs/2509.25129 arxiv.org/pdf/2509.25129…

Loop-Level Double Copy Relations from Forward Limits
We study double copy relations for loop integrands in gauge theories and gravity based on their constructions from single cuts, which are in turn obtained from forward limits of lower-loop cases. While such a construction from forward limits has been realized for loop integrands in gauge theories, we demonstrate its extension to gravity by reconstructing one-loop gravity integrands from forward limits of trees. Under mild symmetry assumptions on tree-level kinematic numerators (and their forwar…

@arXiv_mathNA_bot@mastoxiv.page
2025-09-30 11:29:01

Stabilizing the singularity swap quadrature for near-singular line integrals
David Krantz, Alex H. Barnett, Anna-Karin Tornberg
arxiv.org/abs/2509.23881

Stabilizing the singularity swap quadrature for near-singular line integrals
Singularity swap quadrature (SSQ) is an effective method for the evaluation at nearby targets of potentials due to densities on curves in three dimensions. While highly accurate in most settings, it is known to suffer from catastrophic cancellation when the kernel exhibits both near-vanishing numerators and strong singularities, as arises with scalar double layer potentials or tensorial kernels in Stokes flow or linear elasticity. This precision loss turns out to be tied to the interpolation ba…

@arXiv_quantph_bot@mastoxiv.page
2025-09-18 08:32:21

Quantum ground-state cooling of two librational modes of a nanorotor
Stephan Troyer, Florian Fechtel, Lorenz Hummer, Henning Rudolph, Benjamin A. Stickler, Uro\v{s} Deli\'c, Markus Arndt
arxiv.org/abs/2509.13398

Quantum ground-state cooling of two librational modes of a nanorotor
Controlling the motion of nanoscale objects at the quantum limit promises new tests of quantum mechanics and advanced sensors. Rotational motion is of particular interest, as it follows nonlinear dynamics in a compact, closed configuration space, which opens up a plethora of phenomena and applications beyond the possibilities of free or trapped linear motion. A prerequisite for such experiments is the capability to trap nanorotors and initialize them in a quantum ground state of libration. Here…

@arXiv_mathNT_bot@mastoxiv.page
2025-08-29 08:43:01

Effective Bertini theorems and zeros of $p$-adic forms of degree 7
Lea Beneish, Christopher Keyes
arxiv.org/abs/2508.20192 arxiv.org/pdf/25…

Effective Bertini theorems and zeros of $p$-adic forms of degree 7
We establish an effective Bertini-type theorem for hypersurfaces $X_f \colon f = 0$ defined over a finite field $k$ for which $f$ has no linear factors over the algebraic closure $\overline{k}$. Given a line $L$ defined over $k$ and a nonreduced $\overline{k}$-point $x$ on $X_f \cap L$, we give an upper bound on the number of planes $P$ containing $L$ for which $X_f \cap P$ contains a line through $x$. Underlying this result is a factorization algorithm for bivariate polynomials originally due …