Tootfinder

cs_department: Aarhus Computer Science department relationships
Multiplex network consisting of 5 edge types corresponding to online and offline relationships (Facebook, leisure, work, co-authorship, lunch) between employees of the Computer Science department at Aarhus. Data hosted by Manlio De Domenico.
This network has 61 nodes and 620 edges.
Tags: Social, Relationships, Multilayer, Unweighted

The non-unit conjecture for Misiurewicz parameters
Robert L. Benedetto, Vefa Goksel
https://arxiv.org/abs/2506.05254 https://arxiv.or…

The non-unit conjecture for Misiurewicz parameters
A Misiurewicz parameter is a complex number $c$ for which the orbit of the critical point $z=0$ under $z^2+c$ is strictly preperiodic. Such parameters play the same role in dynamical moduli spaces as singular moduli (corresponding to CM elliptic curves) play on modular curves. Building on our earlier work, we investigate whether the difference of two Misiurewicz parameters can be an algebraic unit. (The corresponding question for singular moduli was recently answered in the negative by Li.) We …

Visual mental imagery and #aphantasia lesions map onto a convergent brain network https://www.medrxiv.org/content/10.1101/2025.05.23.25328072v1 by @…

Visual Mental Imagery and Aphantasia Lesions Map onto a Convergent Brain Network
Background Visual mental imagery, the ability to volitionally form perceptual representations without corresponding external stimuli, allows reliving of past events, solving problems and imagining the future. The absence of visual mental imagery, called aphantasia, has recently been recognized to occur in about 1% of the general population but the cause is uncertain. By studying rare cases of acquired aphantasia we can identify regions that when injured cause loss of visual mental imagery. Met…

A great article by Maxim Kelly at the Galway Advertiser on this weekend's racist & fascist march through town and our corresponding anti-racist & anti-fascist counter-protest from the people of Galway.
https://www.advertiser.ie/galway/article/1

Sparsity and Total Variation Constrained Multilayer Linear Unmixing for Hyperspectral Imagery
Gang Yang
https://arxiv.org/abs/2508.03403 https://arxiv.org/…

Sparsity and Total Variation Constrained Multilayer Linear Unmixing for Hyperspectral Imagery
Hyperspectral unmixing aims at estimating material signatures (known as endmembers) and the corresponding proportions (referred to abundances), which is a critical preprocessing step in various hyperspectral imagery applications. This study develops a novel approach called sparsity and total variation (TV) constrained multilayer linear unmixing (STVMLU) for hyperspectral imagery. Specifically, based on a multilayer matrix factorization model, to improve the accuracy of unmixing, a TV constraint…

This https://arxiv.org/abs/2502.09755 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csCR_…

Jailbreak Attack Initializations as Extractors of Compliance Directions
Safety-aligned LLMs respond to prompts with either compliance or refusal, each corresponding to distinct directions in the model's activation space. Recent works show that initializing attacks via self-transfer from other prompts significantly enhances their performance. However, the underlying mechanisms of these initializations remain unclear, and attacks utilize arbitrary or hand-picked initializations. This work presents that each gradient-based jailbreak attack and subsequent initializatio…

Uncertainty-aware Accurate Elevation Modeling for Off-road Navigation via Neural Processes
Sanghun Jung, Daehoon Gwak, Byron Boots, James Hays
https://arxiv.org/abs/2508.03890 h…

Uncertainty-aware Accurate Elevation Modeling for Off-road Navigation via Neural Processes
Terrain elevation modeling for off-road navigation aims to accurately estimate changes in terrain geometry in real-time and quantify the corresponding uncertainties. Having precise estimations and uncertainties plays a crucial role in planning and control algorithms to explore safe and reliable maneuver strategies. However, existing approaches, such as Gaussian Processes (GPs) and neural network-based methods, often fail to meet these needs. They are either unable to perform in real-time due to…

Intermediate-temperature topological Uhlmann phase on IBM quantum computers
Christopher Mastandrea, Costin Iancu, Hao Guo, Chih-Chun Chien
https://arxiv.org/abs/2508.02915 https…

Intermediate-temperature topological Uhlmann phase on IBM quantum computers
A spin-1 system can exhibit an intermediate-temperature topological regime with a quantized Uhlmann phase sandwiched by topologically trivial low- and high-temperature regimes. We present a quantum circuit consisting of system and ancilla qubits plus a probe qubit which prepares an initial state corresponding to the purified state of a spin-1 system at finite temperature, evolves the system according to the Uhlmann process, and measures the Uhlmann phase via expectation values of the probe qubi…

When Are Standard Graph Products Isomorphic?
Priti Prasanna Mondal, M. Rajesh Kannan, Fouzul Atik
https://arxiv.org/abs/2508.04137 https://arxiv.org/pdf/25…

When Are Standard Graph Products Isomorphic?
This article investigates the isomorphism problem for graphs derived from the four standard graph products: Cartesian, Kronecker (direct), strong, and lexicographic product. We provide a complete characterization of all simple connected graphs for which their corresponding products are isomorphic. As a by-product, we identify a novel family of non-distance-regular graphs that possess fewer than d+1 distinct distance eigenvalues, where d represents the diameter of the graph. This result offers a…

Tropical cluster varieties of type C
Igor Makhlin
https://arxiv.org/abs/2508.02941 https://arxiv.org/pdf/2508.02941…

Tropical cluster varieties of type C
We explicitly describe the tropicalization of a cluster variety of finite type C, realizing it as the space of axially symmetric phylogenetic trees. We also find all occurring sign patterns of coordinates, for both the cluster variety and the cluster configuration space. We realize the corresponding signed tropicalizations as subfans of the tropicalization, with each such subfan dual to either a cyclohedron or an associahedron. As additional results, we construct Gröbner and tropical bases for…

Russian state media reported that during the Trump-Putin call, Putin reiterated his determination to continue pursuing the Kremlin's goals in Ukraine -- despite mounting international calls for a ceasefire.
Zelensky called on Ukraine's allies, particularly the United States,
to apply massive and immediate pressure on Russia.
"We need to ensure that for every such attack on people and lives, they (Russia) feel the corresponding sanctions and other blows to thei…

'Deliberately massive and cynical' — Russian attack on Ukraine began as Trump and Putin spoke, Zelensky says
"Patriots and their missiles are real defenders of life," President Volodymyr Zelensky said. "It is very important to maintain the support of partners in ballistic missile defense."

Love beyond Einstein: Metric reconstruction and Love number in quadratic gravity using WEFT
Arpan Bhattacharyya, Saptaswa Ghosh, Naman Kumar, Shailesh Kumar, Sounak Pal
https://arxiv.org/abs/2508.02785

Love beyond Einstein: Metric reconstruction and Love number in quadratic gravity using WEFT
We study tidal Love numbers of static black holes in four-dimensional quadratic theory of gravity, extending the result of GR. We use worldline effective field theory (WEFT) methods to compute metric perturbations from one-point functions, treating the higher-derivative terms perturbatively. We show that insertions of scalar fields on the worldline induce non-zero tidal tails, and the corresponding Love number displays no RG running. The same conclusion holds for the insertions of tensor fields…

This https://arxiv.org/abs/2504.00155 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Monte Carlo phase space integration of multiparticle cross sections with carlomat_4.5
Multidimensional phase space integrals must be calculated in order to obtain predictions for total or differential cross sections, or to simulate unweighted events of multiparticle reactions. The corresponding matrix elements, already in the leading order, receive contributions typically from dozens of thousands of the Feynman diagrams, many of which often involve strong peaks due to denominators of some Feynman propagators approaching their minima. As the number of peaks exceeds by far the num…

Grapheme-Coherent Phonemic and Prosodic Annotation of Speech by Implicit and Explicit Grapheme Conditioning
Hien Ohnaka, Yuma Shirahata, Byeongseon Park, Ryuichi Yamamoto
https://arxiv.org/abs/2506.04527

Grapheme-Coherent Phonemic and Prosodic Annotation of Speech by Implicit and Explicit Grapheme Conditioning
We propose a model to obtain phonemic and prosodic labels of speech that are coherent with graphemes. Unlike previous methods that simply fine-tune a pre-trained ASR model with the labels, the proposed model conditions the label generation on corresponding graphemes by two methods: 1) Add implicit grapheme conditioning through prompt encoder using pre-trained BERT features. 2) Explicitly prune the label hypotheses inconsistent with the grapheme during inference. These methods enable obtaining p…

Profiles of Critical Flat Ribbon Knots
Jos\'e Ayala
https://arxiv.org/abs/2506.04403 https://arxiv.org/pdf/2506.04403

Profiles of Critical Flat Ribbon Knots
The main open problem in geometric knot theory is to provide a tabulation of knots based on an energy criterion, with the goal of presenting this tabulation in terms of global energy minimisers within isotopy classes, often referred to as ideal knots. Recently, the first examples of minimal length diagrams and their corresponding length values have been determined by Ayala, Kirszenblat, and Rubinstein. This article is motivated by the scarcity of examples despite several decades of intense rese…

On the diameter and girth of zero-divisor graphs of inverse semigroups
Yanhui Wang, Xinyi Zhu, Pei Gao
https://arxiv.org/abs/2508.03632 https://arxiv.org/p…

On the diameter and girth of zero-divisor graphs of inverse semigroups
Let $S$ be an inverse semigroup with zero and let $Z(S)^\times$ be its set of non-zero divisors with respect to the natural partial order $\le $ on $S$, that is, $a \in Z(S)^\times $ if there exists $b\in S\setminus\{0\}$ with $ω(a, b) = \{c \in S: c \leq a\ \mbox{and}\ c \leq b\}=\{0\}$. The set $Z(S)^\times$ makes up the vertices of the corresponding {\it zero-divisor graph} $Γ(S)$, with two distinct vertices $a, b$ forming an edge if $ω(a, b)=\{0\}$. We characterize {\it zero-divisor grap…

This https://arxiv.org/abs/2502.00805 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Constraints on Lorentz Invariance Violation from Gamma-ray Burst rest-frame spectral lags using Profile Likelihood
We reanalyze the spectral lag data for 56 Gamma-Ray Bursts (GRBs) in the cosmological rest frame to search for Lorentz Invariance Violation (LIV) using frequentist inference. For this purpose, we use the technique of profile likelihood to deal with the nuisance parameters, corresponding to a constant time lag in the GRB rest frame and an unknown intrinsic scatter, while the parameter of interest is the energy scale for LIV ($E_{QG}$). With this method, we do not obtain a global minimum for $χ^…

This https://arxiv.org/abs/2411.07970 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

MUltiplexed Survey Telescope: Perspectives for Large-Scale Structure Cosmology in the Era of Stage-V Spectroscopic Survey
The MUltiplexed Survey Telescope (MUST) is a 6.5-meter telescope under development. Dedicated to highly-multiplexed, wide-field spectroscopic surveys, MUST observes over 20,000 targets simultaneously using 6.2-mm pitch positioning robots within a ~5 deg$^2$ field of view. MUST aims to conduct the first Stage-V spectroscopic survey in the 2030s, mapping the 3D Universe with over 100 million galaxies and quasars, spanning from the nearby Universe to a redshift of z ~ 5.5, corresponding to approxi…

Synthetic Reflectionless Mode Exceptional Degeneracies via Emergent Local Symmetries
William Tuxbury, Lucas Fernandez-Alcazar, Tsampikos Kottos
https://arxiv.org/abs/2508.03086 …

Synthetic Reflectionless Mode Exceptional Degeneracies via Emergent Local Symmetries
We propose a new kind of physically realizable exceptional point degeneracies (EPDs) corresponding to synthetic reflectionless modes (SRM). These are solutions of an auxiliary wave operator that is defined in synthetic frequency dimensions and describe incoming reflectionless waves onto a Floquet-driven cavity. The SRM-EPD emerges as a consequence of a spontaneous local PT-symmetry imposed on the auxiliary operator via appropriate Floquet driving. Its presence signifies the possibility to desig…

Renzo's rule revisited: A statistical study of galaxies' baryon - dark matter coupling
Enoch Ko (Astrophysics, University of Oxford, Department of Physics, University of Warwick), Tariq Yasin (Astrophysics, University of Oxford), Harry Desmond (Institute of Cosmology and Gravitation, University of Portsmouth), Richard Stiskalek (Astrophysics, University of Oxford), Matt J. Jarvis (Astrophysics, University of Oxford, Department of Physics and Astronomy, University of the Western…

Renzo's rule revisited: A statistical study of galaxies' baryon - dark matter coupling
We present a systematic statistical analysis of an informal astrophysical phenomenon known as Renzo's rule (or Sancisi's law), which states that "for any feature in a galaxy's luminosity profile, there is a corresponding feature in the rotation curve, and vice versa." This is often posed as a challenge for the standard LCDM model while supporting alternative theories such as MOND. Indeed, we identify clear features in the dwarf spiral NGC 1560 -- a prime example for Renzo's rule -- and find cor…

This https://arxiv.org/abs/2504.10505 has been replaced.
initial toot: https://mastoxiv.page/@ar…

On sloshing in containers with porous baffles
Sloshing eigenvalues are studied for containers with porous baffles extending throughout the constant (possibly infinite) depth. The fluid transmission across the baffles is described by Darcy's law, and so the spectral problem is nonself-adjoint. In particular, much attention is paid to vertical cylinders with circular walls and radial baffles. Explicit solutions are obtained, whose crucial feature is that the corresponding pressure difference vanishes across the baffle. These real solutions c…

Global smooth solutions of 2-D quadratically quasilinear wave equations with null conditions in exterior domains, II
Fei Hou, Huicheng Yin
https://arxiv.org/abs/2508.03348 https…

Global smooth solutions of 2-D quadratically quasilinear wave equations with null conditions in exterior domains, II
In the paper [S. Alinhac, The null condition for quasilinear wave equations in two space dimensions I, Invent. Math. 145 (2001), no. 3, 597-618], S. Alinhac established the global existence of small data smooth solutions to the Cauchy problem of 2-D quadratically quasilinear wave equations with null conditions. However, for the corresponding 2-D initial boundary value problem in exterior domains, it is still open whether the global solutions exist. When the 2-D quadratic nonlinearity admits a s…

Search for dark matter produced in association with a Higgs boson decaying to a $\tau$ lepton pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV
CMS Collaboration
https://arxiv.org/abs/2506.04431

Search for dark matter produced in association with a Higgs boson decaying to a $τ$ lepton pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV
A search for dark matter particles produced in association with a Higgs boson decaying into a pair of $τ$ leptons is performed using data collected in proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector. The analysis is based on a data set corresponding to an integrated luminosity of 101 fb$^{-1}$ collected in 2017$-$2018. No significant excess over the expected standard model background is observed. This result is interpreted within the frameworks of the 2HDM+a…

This https://arxiv.org/abs/2403.04324 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Sublinear expectation structure under countable state space
In this study, we propose the sublinear expectation structure under countable state space. To describe an interesting "nonlinear randomized" trial, based on a convex compact domain, we introduce a family of probability measures under countable state space. Corresponding the sublinear expectation operator introduced by S. Peng, we consider the related notation under countable state space. Within the countable state framework, the sublinear expectation can be explicitly calculated by a novel repe…

This https://arxiv.org/abs/2312.09214 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Shifted coisotropic structures for differentiable stacks
We introduce a notion of coisotropics on 1-shifted symplectic Lie groupoids (i.e. quasi-symplectic groupoids) using twisted Dirac structures and show that it satisfies properties analogous to the corresponding derived-algebraic notion in shifted Poisson geometry. In particular, intersections of 1-coisotropics are 0-shifted Poisson. We also show that 1-shifted coisotropic structures transfer through Morita equivalences, giving a well-defined notion for differentiable stacks. Most results are for…

Strongly Correlated Transport in Topological Y-Junction Devices
E. Novais
https://arxiv.org/abs/2506.05051 https://arxiv.org/pdf/2506…

Strongly Correlated Transport in Topological Y-Junction Devices
I study electron transport through a Y-shaped junction of helical edge states in a two-dimensional topological insulator (2DTI), focusing on the strongly interacting regime. An experimentally accessible device geometry is proposed, and the corresponding conductance tensor is calculated. These results position Y-junctions of 2DTI as promising platforms for interaction-driven transport and nanoscale device applications in spintronics and topological electronics.

The #asteroid discoveries during the commissioning of the #Rubin Observatory - 343,760 observations under station code X05, corresponding to 2103 unique objects, were submitted of which 2096 were indeed unknown, including 5 #NEOs - explained in great detail in https://minorplanetcenter.net/media/newsletters/MPC_Newsletter_Jun2025.pdf on pages 1-5.

IKOD: Mitigating Visual Attention Degradation in Large Vision-Language Models
Jiabing Yang, Chenhang Cui, Yiyang Zhou, Yixiang Chen, Peng Xia, Ying Wei, Tao Yu, Yan Huang, Liang Wang
https://arxiv.org/abs/2508.03469

IKOD: Mitigating Visual Attention Degradation in Large Vision-Language Models
Recent advancements in Large Vision-Language Models (LVLMs) have demonstrated significant progress across multiple domains. However, these models still face the inherent challenge of integrating vision and language for collaborative inference, which often leads to "hallucinations", outputs that are not grounded in the corresponding images. Many efforts have been made to address these issues, but each comes with its own limitations, such as high computational cost or expensive dataset annotation…

Expanding the Standard Diffusion Process to Specified Non-Gaussian Marginal Distributions
Robert Richardson, H. Dennis Tolley, Kenneth Kuttler
https://arxiv.org/abs/2508.03617 h…

Expanding the Standard Diffusion Process to Specified Non-Gaussian Marginal Distributions
We develop a class of non-Gaussian translation processes that extend classical stochastic differential equations (SDEs) by prescribing arbitrary absolutely continuous marginal distributions. Our approach uses a copula-based transformation to flexibly model skewness, heavy tails, and other non-Gaussian features often observed in real data. We rigorously define the process, establish key probabilistic properties, and construct a corresponding diffusion model via stochastic calculus, including pro…

cs_department: Aarhus Computer Science department relationships
Multiplex network consisting of 5 edge types corresponding to online and offline relationships (Facebook, leisure, work, co-authorship, lunch) between employees of the Computer Science department at Aarhus. Data hosted by Manlio De Domenico.
This network has 61 nodes and 620 edges.
Tags: Social, Relationships, Multilayer, Unweighted

This https://arxiv.org/abs/2505.18570 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLG_…

VISTA: Vision-Language Inference for Training-Free Stock Time-Series Analysis
Stock price prediction remains a complex and high-stakes task in financial analysis, traditionally addressed using statistical models or, more recently, language models. In this work, we introduce VISTA (Vision-Language Inference for Stock Time-series Analysis), a novel, training-free framework that leverages Vision-Language Models (VLMs) for multi-modal stock forecasting. VISTA prompts a VLM with both textual representations of historical stock prices and their corresponding line charts to pre…

This https://arxiv.org/abs/2505.15053 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLO_…

Owicki--Gries Logic for Timestamp Semantics
Whereas an extension with non-interference of Hoare logic for sequential programs Owicki--Gries logic ensures the correctness of concurrent programs on strict consistency, it is unsound to weak memory models adopted by modern computer architectures and specifications of programming languages. This paper proposes a novel non-interference notion and provides concurrent program logic sound to timestamp semantics corresponding to a weak memory model that allows delays in the effects of store instru…

Evaluating Transfer Learning Methods on Real-World Data Streams: A Case Study in Financial Fraud Detection
Ricardo Ribeiro Pereira, Jacopo Bono, Hugo Ferreira, Pedro Ribeiro, Carlos Soares, Pedro Bizarro
https://arxiv.org/abs/2508.02702

Evaluating Transfer Learning Methods on Real-World Data Streams: A Case Study in Financial Fraud Detection
When the available data for a target domain is limited, transfer learning (TL) methods can be used to develop models on related data-rich domains, before deploying them on the target domain. However, these TL methods are typically designed with specific, static assumptions on the amount of available labeled and unlabeled target data. This is in contrast with many real world applications, where the availability of data and corresponding labels varies over time. Since the evaluation of the TL met…

Phonon Dynamics in Spherically-Curved Analog-Gravity Bose-Einstein Condensates
J. Austin Chunn, Ruotong Zhai, Daniel E. Sheehy
https://arxiv.org/abs/2508.03683 https://

Phonon Dynamics in Spherically-Curved Analog-Gravity Bose-Einstein Condensates
We study the low energy phonon dynamics of a Bose-Einstein condensate (BEC) with a density profile that is equivalent, via a coordinate transformation, to phonons traveling in a \lq\lq spherical\rq\rq\ curved spacetime that realizes the Friedman-Lemaître-Robertson-Walker (FLRW) metric. The metric of this BEC is characterized by its curvature $κ$ and a time-depdendent scale factor $a(t)$, with an increase in the latter corresponding to an expansion of the analog FLRW universe. We study the pro…

Generalized product formulas for Whittaker's functions and a novel class of index transforms
Semyon Yakubovich
https://arxiv.org/abs/2506.05013 https:/…

Generalized product formulas for Whittaker's functions and a novel class of index transforms
Generalized product formulas and index transforms, involving products of Whittaker's functions of different indices are established and investigated. The corresponding inversion formulas are found. Particular cases cover index transforms with products of the modified Bessel and Whittaker's functions. For our goals the Kontorovich-Lebedev and Olevskii transforms of a complex index with nonzero real part are involved.

This https://arxiv.org/abs/2506.01135 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

$\text{TREX}^2$: Dual-Reconstruction Framework for Teleoperated-Robot with EXtended Reality
Robot teleoperation with extended reality (XR teleoperation) enables intuitive interaction by allowing remote robots to mimic user motions with real-time 3D feedback. However, existing systems face significant motion-to-motion (M2M) latency--the delay between the user's latest motion and the corresponding robot feedback--leading to high teleoperation error and mission completion time. This issue stems from the system's exclusive reliance on network communication, making it highly vulnerable to …

The c-Entropy of non-dissipative L-systems
Sergey Belyi, Konstantin A. Makarov, Eduard Tsekanovskii
https://arxiv.org/abs/2506.05144 https://

The c-Entropy of non-dissipative L-systems
In this paper, we extend the definition of c-entropy to canonical L-systems with non-dissipative state-space operators. We also introduce the concepts of dissipation and accumulation coefficients for such systems. In addition, we examine the coupling of these L-systems and derive closed form expressions for the corresponding c-entropy.

Structure Maintained Representation Learning Neural Network for Causal Inference
Yang Sun, Wenbin Lu, Yi-Hui Zhou
https://arxiv.org/abs/2508.01865 https://…

Structure Maintained Representation Learning Neural Network for Causal Inference
Recent developments in causal inference have greatly shifted the interest from estimating the average treatment effect to the individual treatment effect. In this article, we improve the predictive accuracy of representation learning and adversarial networks in estimating individual treatment effects by introducing a structure keeper which maintains the correlation between the baseline covariates and their corresponding representations in the high dimensional space. We train a discriminator at …

⛽ Floating platform to produce synthetic fuels using wind, seawater, and air
#fuels

Floating platform to produce synthetic fuels using wind, seawater, and air
Off-grid, modular, and seaworthy: KIT (Karlsruhe Institute of Technology) and partners intend to produce synthetic fuels on a floating platform using wind energy, seawater, and ambient air. For this purpose, the "PtX-Wind" project was launched under the H2Mare lead project. A corresponding modular plant was installed on a barge and lies operational at anchor in Bremerhaven. Later this year, it will start producing synthetic fuel directly on the sea just off Helgoland Island.

This https://arxiv.org/abs/2504.19466 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

The partial derivative of ratios of Schur polynomials and applications to symplectic quotients
We show that a ratio of Schur polynomials $s_λ/s_ρ$ associated to partitions $λ$ and $ρ$ such $λ\subsetneqρ$ has a negative partial derivative at any point where all variables are positive. This is accomplished by establishing an injective map between sets of pairs of skew semistandard Young tableaux that preserves the product of the corresponding monomials. We use this result and the description of the first Laurent coefficient of the Hilbert series of the graded algebra of regular funct…

This https://arxiv.org/abs/2503.18789 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

On the Sylvester program and Cayley algorithm for vector partition reduction
A vector partition problem asks for a number of nonnegative integer solutions to a system of several linear Diophantine equations with integer nonnegative coefficients. J.J. Sylvester put forward an idea of reduction of vector partition to a sum of scalar partitions. In the simplest case of two equations with positive coefficients A. Cayley performed a reduction of the corresponding double partition to a sum of scalar partitions using an algorithm subject to a set of conditions on the coefficie…

Boundary Stabilizability of Generalized Burgers-Huxley Equation with Memory
Manika Bag, Wasim Akram, Manil T. Mohan
https://arxiv.org/abs/2508.02654 https://

Boundary Stabilizability of Generalized Burgers-Huxley Equation with Memory
In this paper, we study a generalized Burgers-Huxley equation with memory, subject to nonhomogeneous Dirichlet boundary conditions. We construct a linear, finite-dimensional Dirichlet boundary feedback controller aimed at stabilizing the stationary solution corresponding to the homogeneous boundary condition. This controller is designed using eigenfunctions of the Laplace operator. We begin by analyzing the stabilization of a linear system under the proposed feedback law. Subsequently, we demon…

The equivalent condition for GRL codes to be MDS, AMDS or self-dual
Zhonghao Liang, Qunying Liao
https://arxiv.org/abs/2506.03874 https://

The equivalent condition for GRL codes to be MDS, AMDS or self-dual
It is well-known that MDS, AMDS or self-dual codes have good algebraic properties, and are applied in communication systems, data storage, quantum codes, and so on. In this paper, we focus on a class of generalized Roth-Lempel linear codes, and give an equivalent condition for them or their dual to be non-RS MDS, AMDS or non-RS self-dual and some corresponding examples.

This https://arxiv.org/abs/2412.20113 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qbi…

Intrinsic noise in structured replicator dynamics modelling time delays
We construct and analyze structured replicator dynamics of the Snowdrift game. In our model, the offspring is put in juvenile compartments and then mature and join adult compartments with strategy-dependent rates. This is augmented by death rates and hence the population size is bounded. In the corresponding birth-death Markov jump process, rates of leaving juvenile compartments may be interpreted as inverses of averages of exponentially distributed time delays. We observe a novel behavior: for…

A Generalized Graph Signal Processing Framework for Multiple Hypothesis Testing over Networks
Xingchao Jian, Martin G\"olz, Feng Ji, Wee Peng Tay, Abdelhak M. Zoubir
https://arxiv.org/abs/2506.03496

A Generalized Graph Signal Processing Framework for Multiple Hypothesis Testing over Networks
We consider the multiple hypothesis testing (MHT) problem over the joint domain formed by a graph and a measure space. On each sample point of this joint domain, we assign a hypothesis test and a corresponding $p$-value. The goal is to make decisions for all hypotheses simultaneously, using all available $p$-values. In practice, this problem resembles the detection problem over a sensor network during a period of time. To solve this problem, we extend the traditional two-groups model such that …

Dynamically derived morphology from the recurrence patterns of close binary stars using Kepler data
Anisha R. V. Kashyap, D. Pawar, R. Misra, G. Ambika, Sandip V George
https://arxiv.org/abs/2506.04111

Dynamically derived morphology from the recurrence patterns of close binary stars using Kepler data
In this work, we propose a novel method to classify close binary stars, derived from the dynamical structure inherent in their light curves. We apply the technique to light curves of binaries from the revised Kepler Eclipsing binary catalog, selecting close binaries which have the standard morphology parameter, $c$, $\gt 0.5$ corresponding to semi-detached, over-contact and ellipsoidal systems. Using the method of time delay embedding, we recreate the non-linear dynamics underlying the data and…

This https://arxiv.org/abs/2406.04788 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Detection Prospects of Millicharged Dark Matter in Unconventional Interferometer
We propose a novel idea to discover millicharged particles (mCPs) captured by the earth during its existence. It has been demonstrated that the mCPs accumulation inside the earth leads to the enhancement of its number density much larger than the corresponding virial density. We propose to utilize an unconventional laser interferometer to probe these earth-bound mCPs through the detection of the photons's phase shift. We demonstrate that, for mCPs mass in the range between $1$ GeV to $10^{12}$ …

Twisted conjugacy in $BS(n, 1)$
Oorna Mitra, Mallika Roy, Enric Ventura
https://arxiv.org/abs/2508.04397 https://arxiv.org/pdf/2508.04397

Twisted conjugacy in $BS(n, 1)$
In this article, we solve the twisted conjugacy problem for solvable Baumslag--Solitar groups $BS(n,1)$, i.e., we propose an algorithm which, given two elements $u,v \in BS(n,1)$ and an automorphism $φ\in \Aut(BS(n,1))$, decides whether $v=(wφ)^{-1} u w$ for some $w\in BS(n,1)$. Also we prove that the automorphism group $\Aut(BS(n,1))$ is orbit decidable -- given two words on the generators $u,v\in F(X)$, decide whether the corresponding elements $u,v\in G$ can be mapped to each other by some…

The structural method for Ordinary Differential Equations
S. Clain, M. T. Malheiro, G. J. Machado, R. Costa
https://arxiv.org/abs/2508.02440 https://arxiv.…

The structural method for Ordinary Differential Equations
We design and analyse a new numerical method to solve ODE system based on the structural method. We compute approximations of solutions together with its derivatives up to order $K$ by solving an entire block corresponding to $R$ time steps. We build the physical relations that connect the function and derivative approximations at each time step by using the ODE and its derivatives, and develop the structural equations that establish linear relations between the function and its derivative over…

Quantum entanglement in cosmology
Alessio Belfiglio, Orlando Luongo, Stefano Mancini
https://arxiv.org/abs/2506.03841 https://arxiv.o…

Quantum entanglement in cosmology
We discuss recent progress in the study of entanglement within cosmological frameworks, focusing on both momentum and position-space approaches and also reviewing the possibility to directly extract entanglement from quantum fields. Entanglement generation in expanding spacetimes can be traced back to the phenomenon of gravitational particle production, according to which the background gravitational field may transfer energy and momentum to quantum fields. The corresponding entanglement amount…

This https://arxiv.org/abs/2205.00368 has been replaced.
link: https://scholar.google.com/scholar?q=a

Direct closed-loop identification of continuous-time systems using fixed-pole observer model
This paper provides a method for obtaining a continuous-time model of a target system in closed-loop from input-output data alone, in the case where no knowledge of the controllers nor excitation signals is available and I/O data may suffer from unknown offsets. The proposed method is based on a fixed-pole observer model, which is a reasonable continuous-time version corresponding to the innovation model in discrete-time and allows the identification of unstable target systems. Furthermore, it …

Spectral Energy Correlations of Gamma-Ray Bursts from Structured Jets
X. L. Zhang, Z. B. Zhang, Y. F. Huang, D. Li, X. J. Li, L. M. Song
https://arxiv.org/abs/2508.04487 https:/…

Spectral Energy Correlations of Gamma-Ray Bursts from Structured Jets
Using 148 out-axis gamma-ray bursts, we build their spectrum-energy relations of peak energy versus isotropic energy, peak energy versus peak luminosity and peak energy versus jet-calibrated energy which are corrected for a structured jet model. These relations are found to depend on the observer's viewing angle as long as the observer is within the jet cone. After converting the out-axis energy relations to the in-axis situations, we find that the corresponding in-axis energy relations are uni…

Raiders sign WR Kawaan Baker and TE Albert Okwuegbunam https://www.raiders.com/news/raiders-sign-wr-kawaan-baker-and-te-albert-okwuegbunam

The Nature of an Unidentified X-ray Source in the 7 Ms Chandra Deep Field-South Catalog
Quinn P. Sullivan, Zhibo Yu, William N. Brandt, Bin Luo, Fan Zou
https://arxiv.org/abs/2508.03656

The Nature of an Unidentified X-ray Source in the 7 Ms Chandra Deep Field-South Catalog
In the 7 Ms Chandra Deep Field-South catalog, only one source, XID 912, was highly significantly detected in X-rays but had no formally reported counterparts in the UV, optical, infrared, or radio bands. We identified its potential JWST and VLT VIMOS counterparts and measured the corresponding aperture photometry to construct its spectral energy distribution (SED). We fitted this SED using CIGALE. The results indicate that the source is most likely an off-nuclear ultraluminous X-ray source, rat…

Existence of infinitely many homotopy classes from $\mathbb S^3$ to $\mathbb S^2$ having a minimimzing $W^{s,\frac 3s}$-harmonic map
Adam Grzela, Katarzyna Mazowiecka
https://arxiv.org/abs/2506.05060

Existence of infinitely many homotopy classes from $\mathbb S^3$ to $\mathbb S^2$ having a minimimzing $W^{s,\frac 3s}$-harmonic map
In 1998 T. Rivière proved that there exist infinitely many homotopy classes of $π_3(\mathbb S^2)$ having a minimizing 3-harmonic map. This result is especially surprising taking into account that in $π_3(\mathbb S^3)$ there are only three homotopy classes (corresponding to the degrees $\{-1,0,1\}$) in which a minimizer exists. We extend this theorem in the framework of fractional harmonic maps and prove that for $s\in(0,1)$ there exist infinitely many homotopy classes of $π_{3}(\mathbb S^…

Abstract Model Structures and Compactness Theorems
Sayantan Roy, Sankha S. Basu, Mihir K. Chakraborty
https://arxiv.org/abs/2507.02343 https://

Abstract Model Structures and Compactness Theorems
The compactness theorem for a logic states, roughly, that the satisfiability of a set of well-formed formulas can be determined from the satisfiability of its finite subsets, and vice versa. Usually, proofs of this theorem depend on the syntactic/semantic particularities of the corresponding logic. In this paper, using the notion of \emph{abstract model structures}, we show that one can develop a generalized notion of compactness that is independent of these. Several characterization theorems f…

This https://arxiv.org/abs/2503.21292 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Shell-Core Structural Anisotropy in Starch Granules Revealed by Polarization-Dependent Third-Harmonic Generation Imaging
We investigate the polarization-dependent third-harmonic generation (P-THG) response of starch granules, revealing distinct structural organization between their inner and outer regions. By rotating the linear polarization of the excitation beam, we uncover two characteristic P-THG modulation patterns within single granules, corresponding to an outer shell and a structurally distinct inner core. These patterns are analyzed using a theoretical model based on orthorhombic symmetry, allowing us to…

Cauchy problem for the localized wave propagation in continuous model of the one-dimensional diatomic crystal
Sergey Sergeev
https://arxiv.org/abs/2507.02729

Cauchy problem for the localized wave propagation in continuous model of the one-dimensional diatomic crystal
We study the continuous model of the localized wave propagation corresponding to the one-dimensional diatomic crystal lattice. From the mathematical point of view the problem can be described in terms of the Cauchy problem with localized initial data for a system of two pseudo-differential equations. We assume two small parameters in this formulation -- the lattice step and the size if the initial perturbation. We construct the asymptotic solution of the continuous Cauchy problem with respect t…

Machine Learning for Consistency Violation Faults Analysis
Kamal Giri, Amit Garu
https://arxiv.org/abs/2506.02002 https://arxiv.org/p…

Machine Learning for Consistency Violation Faults Analysis
Distributed systems frequently encounter consistency violation faults (cvfs), where nodes operate on outdated or inaccurate data, adversely affecting convergence and overall system performance. This study presents a machine learning-based approach for analyzing the impact of CVFs, using Dijkstra's Token Ring problem as a case study. By computing program transition ranks and their corresponding effects, the proposed method quantifies the influence of cvfs on system behavior. To address the state…

This https://arxiv.org/abs/2412.05718 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csAI_…

RLZero: Direct Policy Inference from Language Without In-Domain Supervision
The reward hypothesis states that all goals and purposes can be understood as the maximization of a received scalar reward signal. However, in practice, defining such a reward signal is notoriously difficult, as humans are often unable to predict the optimal behavior corresponding to a reward function. Natural language offers an intuitive alternative for instructing reinforcement learning (RL) agents, yet previous language-conditioned approaches either require costly supervision or test-time tr…

When moving or copying large files between hard disks I like to see the progress to make the wait more informative and enjoyable.
If you want to achieve the same thing the "progress" package (present in the repos of all distros) allows you to do it. After installing it add to mv or cp the variable "& progress -mp $!", for example: mv file1 /destination-directory & progress -mp $!
If you like you can add the corresponding alias: alias mv='mv -v &quo…

This https://arxiv.org/abs/2503.20117 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLG_…

Exact and Linear Convergence for Federated Learning under Arbitrary Client Participation is Attainable
This work tackles the fundamental challenges in Federated Learning (FL) posed by arbitrary client participation and data heterogeneity, prevalent characteristics in practical FL settings. It is well-established that popular FedAvg-style algorithms struggle with exact convergence and can suffer from slow convergence rates since a decaying learning rate is required to mitigate these scenarios. To address these issues, we introduce the concept of stochastic matrix and the corresponding time-varyin…

Quantum Bootstrap Approach to a Non-Relativistic Potential for Quarkonium systems
Jairo Alexis Lopez, Carlos Sandoval
https://arxiv.org/abs/2508.02916 https://

Quantum Bootstrap Approach to a Non-Relativistic Potential for Quarkonium systems
The quantum bootstrap method is applied to determine the bound-state spectrum of Quarkonium systems using a non-relativistic potential approximation. The method translates the Schrödinger equation into a set of algebraic recursion relations for radial moments $\langle r^m \rangle$, which are constrained by the positive semidefiniteness of their corresponding Hankel matrices. The numerical implementation is first validated by calculating the $1S$ and $1P$ mass centroids for both charmonium ($c\…

Bosonization, BTZ Black Hole Microstates, and Logarithmic Correction to Entropy
Suvankar Dutta, Shruti Menon, Aayush Srivastav
https://arxiv.org/abs/2508.02663 https://

Bosonization, BTZ Black Hole Microstates, and Logarithmic Correction to Entropy
We study three-dimensional gravity with negative cosmological constant under non-standard boundary conditions where chemical potentials are determined dynamically. Using a boundary Hamiltonian inspired by collective field theory (ColFT), the boundary dynamics reduce to those of a one-dimensional fluid on a circle, with configurations corresponding to bulk geometries such as BTZ black holes. Quantizing the system via bosonization of relativistic fermions, we obtain a microscopic description of b…

Mapping the reddening plane in the Galactic disk through interstellar extinction of open clusters
Yogesh C. Joshi (ARIES)
https://arxiv.org/abs/2506.04460 …

Mapping the reddening plane in the Galactic disk through interstellar extinction of open clusters
As thousands of new open clusters in the Galaxy have recently been reported with reddening or extinction information, we map the distribution and properties of the Galaxy's interstellar material in the Galactic disk as traced by these open clusters. By analyzing the distribution of interstellar extinction for 6215 open clusters located at low Galactic latitude b <= 6 deg, corresponding to the thin Galactic disk, we identify a reddening plane characterized by a dust layer whose thickness varies …

This https://arxiv.org/abs/2505.22403 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Knot invariants from representations of braids by automorphisms of a free group
We describe an alternative way of computing Alexander polynomials of knots/links, based on the Artin representation of the corresponding braids by automorphisms of a free group. Then we apply the same method to other representations of braid groups discovered by Wada and compare the corresponding isotopic invariants to Alexander polynomials.

PARSEC V2.0: Rotating tracks and isochrones for seven addtional metallicities in the range Z=0.0001-0.03
C. T. Nguyen, G. Costa, A. Bressan, L. Girardi, G. Cescutti, A. J. Korn, G. Volpato, Y. Chen, G. Pastorelli, M. Trabucchi, K. G. Shepherd, G. Ettorre, S. Zaggia
https://arxiv.org/abs/2508.02393 …

PARSEC V2.0: Rotating tracks and isochrones for seven addtional metallicities in the range Z=0.0001-0.03
PARSEC v2.0 rotating stellar tracks were previously presented for six values of metallicity from subsolar to solar values, with initial rotation rates ($ω_\mathrm{i}$, defined as the ratio of angular velocity and its critical value) spanning from the non-rotating case to very near the critical velocity (i.e. $ω_\mathrm{i}=0.99$), and for initial masses covering the $\sim 0.7 M_\odot$ to $14 M_\odot$ interval. Furthermore, we provided the corresponding isochrones converted into several photome…

WhiSQA: Non-Intrusive Speech Quality Prediction Using Whisper Encoder Features
George Close, Kris Hong, Thomas Hain, Stefan Goetze
https://arxiv.org/abs/2508.02210 https://

WhiSQA: Non-Intrusive Speech Quality Prediction Using Whisper Encoder Features
There has been significant research effort developing neural-network-based predictors of SQ in recent years. While a primary objective has been to develop non-intrusive, i.e.~reference-free, metrics to assess the performance of SE systems, recent work has also investigated the direct inference of neural SQ predictors within the loss function of downstream speech tasks. To aid in the training of SQ predictors, several large datasets of audio with corresponding human labels of quality have been c…

Inverse harmonic clustering for multi-pitch estimation: an optimal transport approach
Anton Bj\"orkman, Filip Elvander
https://arxiv.org/abs/2508.02471 https://

Inverse harmonic clustering for multi-pitch estimation: an optimal transport approach
In this work, we consider the problem of multi-pitch estimation, i.e., identifying super-imposed truncated harmonic series from noisy measurements. We phrase this as recovering a harmonically-structured measure on the unit circle, where the structure is enforced using regularizers based on optimal transport theory. In the resulting framework, a signal's spectral content is simultaneously inferred and assigned, or transported, to a small set of harmonic series defined by their corresponding fund…

A comprehensive study of the charged Higgs boson in the two Higgs doublet type-II seesaw model
Brahim Ait-Ouazghour, Abdesslam Arhrib, Mohamed Chabab, Khalid Goure
https://arxiv.org/abs/2508.04493

A comprehensive study of the charged Higgs boson in the two Higgs doublet type-II seesaw model
We investigate the phenomenology of the charged Higgs boson within the Two-Higgs-Doublet Type-II Seesaw Model (2HDMcT Type-III) at future $μ^+ μ^-$ colliders. Focusing on $2 \to 2$ processes such as $μ^+ μ^- \to H^+_1 S^-$ ($S^- = H^-_1, H^-_2$) and $μ^+ μ^- \to H^+_1 W^-$, we incorporate both theoretical and experimental constraints to assess their production prospects. We find that $σ(μ^+ μ^- \to H_1^+ H_1^-)$ can reach or exceed the corresponding $e^+ e^-$ cross section, while $σ(�…

The Frobenius number corresponding to the squares of three consecutive Fibonacci numbers: comparison of three algorithmic processes
Aureliano M. Robles-P\'erez, Jos\'e Carlos Rosales
https://arxiv.org/abs/2507.01898

The Frobenius number corresponding to the squares of three consecutive Fibonacci numbers: comparison of three algorithmic processes
We compute the Frobenius number for numerical semigroups generated by the squares of three consecutive Fibonacci numbers. We achieve this by using and comparing three distinct algorithmic approaches: those developed by Ramírez Alfonsín and Rødseth ([15]), Rosales and García-Sánchez ([20]), and Tripathi ([26]).

Measurement of Born Cross Sections and Effective Form Factors of $e^ e^-\to \Omega^{-}\bar{\Omega}^{ }$ from$\sqrt{s}$ = 3.7 to 4.7 GeV
BESIII Collaboration, et al.
https://arxiv.org/abs/2508.01359

Measurement of Born Cross Sections and Effective Form Factors of $e^+e^-\to Ω^{-}\barΩ^{+}$ from$\sqrt{s}$ = 3.7 to 4.7 GeV
Using $e^+e^-$ collision data corresponding to an integrated luminosity of 22.7 fb$^{-1}$, collected at center-of-mass energies between 3.7 and 4.7 GeV with the BESIII detector at the BEPCII storage ring, we measure the energy-dependent Born cross sections of $e^+e^-\to Ω^{-}\barΩ^+$ and the effective form factors of the $Ω^-$ baryon. The analysis employs a single baryon tagging method, and the results are consistent with theoretical predictions, providing critical constraints on the electro…

Raiders sign WR Kawaan Baker and TE Albert Okwuegbunam https://www.raiders.com/news/raiders-sign-wr-kawaan-baker-and-te-albert-okwuegbunam

On the normalization of trigonometric and hyperbolic B-splines
Hendrik Speleers
https://arxiv.org/abs/2508.01817 https://arxiv.org/pdf/2508.01817

On the normalization of trigonometric and hyperbolic B-splines
Trigonometric and hyperbolic B-splines can be computed via recurrence relations analogous to the classical polynomial B-splines. However, in their original formulation, these two types of B-splines do not form a partition of unity and consequently do not admit the notion of control polygons with the convex hull property for design purposes. In this paper, we look into explicit expressions for their normalization and provide a recursive algorithm to compute the corresponding normalization weight…

Upper bounds for the connective constant of weighted self-avoiding walks
Qidong He
https://arxiv.org/abs/2508.01993 https://arxiv.org/pdf/2508.01993…

Upper bounds for the connective constant of weighted self-avoiding walks
Building on an earlier work by Alm, we consider a model of weighted self-avoiding walks on a generic lattice and develop a systematic method for deriving upper bounds on the corresponding weighted connective constant. These bounds are obtained as the dominant eigenvalues of certain matrices and provide detailed information about the domain of convergence of the model's multivariate generating function. We discuss potential applications of this framework to developing Peierls-type estimates for …

Descent sets of cyclic permutations in types B and D
Kevin Liu
https://arxiv.org/abs/2508.02432 https://arxiv.org/pdf/2508.02432

Descent sets of cyclic permutations in types B and D
Elizalde constructed a bijection $ϕ$ from the cyclic permutations $π\in S_{n+1}$ to the symmetric group $S_n$ satisfying $\operatorname{Des}(π)\cap \{1,2,\ldots,n-1\}=\operatorname{Des}(ϕ(π))$. We give a corresponding result on the signed symmetric group $B_n$ by constructing a function $Φ$ from the cyclic signed permutations $π\in B_{n+1}$ to $B_n$ satisfying $\operatorname{Des}(π)\cap \{0,1,\ldots,n-1\}=\operatorname{Des}(Φ(π))$. Moreover, letting $D_{n+1}\subseteq B_{n+1}$ be the s…

Holonomy of affine surfaces
Paul Apisa, Matt Bainbridge, Jane Wang
https://arxiv.org/abs/2508.00100 https://arxiv.org/pdf/2508.00100

Holonomy of affine surfaces
We identify the moduli space of complex affine surfaces with the moduli space of regular meromorphic connections on Riemann surfaces and show that it satisfies a corresponding universal property. As a consequence, we identify the tangent space of the moduli space of affine surfaces, at an affine surface X, with the first hypercohomology of a two-term sequences of sheaves on X. In terms of this identification, we calculate the derivative and coderivative of the holonomy map, sending an affine su…

This https://arxiv.org/abs/2204.08031 has been replaced.
link: https://scholar.google.com/scholar?q=a

Limit theorems of Chatterjee's rank correlation
Establishing the limiting distribution of Chatterjee's rank correlation for a general, possibly non-independent, pair of random variables has been eagerly awaited by many. This paper shows that (a) Chatterjee's rank correlation is asymptotically normal as long as one variable is not a measurable function of the other, (b) the corresponding asymptotic variance is uniformly bounded by 36, and (c) a consistent variance estimator exists. Similar results also hold for Azadkia-Chatterjee's graph-base…

Computability of a Whitney Extension
Andrea Brun, Guido Gherardi, Alberto Marcone
https://arxiv.org/abs/2507.02113 https://arxiv.org/…

Computability of a Whitney Extension
We prove the computability of a version of Whitney Extension, when the input is suitably represented. More specifically, if $F \subseteq \mathbb{R}^n$ is a closed set represented so that the distance function $x \mapsto d(x,F)$ can be computed, and $(f^{(\bar{k})})_{|\bar{k}| \le m}$ is a Whitney jet of order $m$ on $F$, then we can compute $g \in C^{m}(\mathbb{R}^n)$ such that $g$ and its partial derivatives coincide on $F$ with the corresponding functions of $(f^{(\bar{k})})_{|…

A Topological Semantics of Dialogue: Nerve Structures and Logical Extraction
Andreu Ballus Santacana
https://arxiv.org/abs/2506.00615 https://

A Topological Semantics of Dialogue: Nerve Structures and Logical Extraction
We introduce a concise, topologically-motivated semantics for finite dialogues by mapping each utterance to an open set in a fixed semantic space, building the corresponding nerve complex of joint satisfiability, and extracting fundamental combinatorial invariants: 1. The negative nerve, which enumerates all finite collections of utterances whose opens have empty intersection, providing a straightforward criterion for merging separate transcripts without contradiction. 2. The global int…

This https://arxiv.org/abs/2412.15323 has been replaced.
initial toot: https://mastoxiv.page/@a…

Abelian Spectral Topology of Multifold Exceptional Points
The advent of non-Hermitian physics has enriched the plethora of topological phases to include phenomena without Hermitian counterparts. Despite being among the most well-studied uniquely non-Hermitian features, the topological properties of multifold exceptional points, $n$-fold spectral degeneracies (EP$n$s) at which also the corresponding eigenvectors coalesce, were only recently revealed in terms of topological resultant winding numbers and concomitant Abelian doubling theorems. Nevertheles…

This https://arxiv.org/abs/2505.06369 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Yang-Lee Quantum Criticality in Various Dimensions
The Yang-Lee universality class arises when imaginary magnetic field is tuned to its critical value in the paramagnetic phase of the $d<6$ Ising model. In $d=2$, this non-unitary Conformal Field Theory (CFT) is exactly solvable via the $M(2,5)$ minimal model. As found long ago by von Gehlen using Exact Diagonalization, the corresponding real-time, quantum critical behavior arises in the periodic Ising spin chain when the imaginary longitudinal magnetic field is tuned to its critical value from …

Classification by Separating Hypersurfaces: An Entropic Approach
Argimiro Arratia, Mahmoud El Daou, Henryk Gzyl
https://arxiv.org/abs/2507.02732 https://…

Classification by Separating Hypersurfaces: An Entropic Approach
We consider the following classification problem: Given a population of individuals characterized by a set of attributes represented as a vector in ${\mathbb R}^N$, the goal is to find a hyperplane in ${\mathbb R}^N$ that separates two sets of points corresponding to two distinct classes. This problem, with a history dating back to the perceptron model, remains central to machine learning. In this paper we propose a novel approach by searching for a vector of parameters in a bounded $N$-dimensi…

A fast radio burst from the first 3 billion years of the Universe
Manisha Caleb, Themiya Nanayakkara, Benjamin Stappers, In\'es Pastor-Marazuela, Ilya S. Khrykin, Karl Glazebrook, Nicolas Tejos, J. Xavier Prochaska, Kaustubh Rajwade, Lluis Mas-Ribas, Laura N. Driessen, Wen-fai Fong, Alexa C. Gordon, Jordan Hoffmann, Clancy W. James, Fabian Jankowski, Lordrick Kahinga, Michael Kramer, Sunil Simha, Ewan D. Barr, Mechiel Christiaan Bezuidenhout, Xihan Deng, Zeren Lin, Lachlan Marnoch,…

A fast radio burst from the first 3 billion years of the Universe
Fast radio bursts (FRBs) are enigmatic millisecond-duration signals which encode otherwise unattainable information on the plasma which permeates our Universe, providing insights into magnetic fields and gas distributions. Here we report the discovery of FRB 20240304B originating at redshift 2.148 +/- 0.001 corresponding to just 3 billion years after the Big Bang. FRB 2024030 was detected with the MeerKAT radio telescope and localized to a low-mass, clumpy, star forming galaxy using the James W…

A family of regular integral graphs and its application to the $n$-Queens' graph
Domingos M. Cardoso, In\^es Ser\^odio Costa, Rui Duarte
https://arxiv.org/abs/2508.01088 htt…

A family of regular integral graphs and its application to the $n$-Queens' graph
A family of regular integral graphs introduced in [I.F.S. Costa, The $n$-Queens graph and its generalizations, Ph.D. Thesis, University of Aveiro 2024], denoted by ${\cal T}(n)$ and herein called triangular graphs, is analysed. In this analysis, the consistent structure of the graph spectra and the patterns of the corresponding eigenvectors are highlighted. The properties of these graphs are examined and applied to the decomposition of the $n$-Queens' graph into three distinct families: a famil…

Parabolic-elliptic and indirect-direct simplifications in chemotaxis systems driven by indirect signalling
Le Trong Thanh Bui, Thi Kim Loan Huynh, Bao Quoc Tang, Bao-Ngoc Tran
https://arxiv.org/abs/2508.01436

Parabolic-elliptic and indirect-direct simplifications in chemotaxis systems driven by indirect signalling
Under relevant biological situations of the signalling process on a much faster time scale compared to the species diffusion and all interactions, we study two singular limits corresponding to $\varepsilon\to 0^+$ with a fixed $τ>0$, and $(\varepsilon,τ)\to (0^+,0^+)$ arising in the following indirect signalling chemotaxis system with no-flux accross the boundary \begin{align*} \left\{\begin{array}{lllllll} \partial_t n=Δn-\nabla\cdot(n\nabla c)&\text{in }Ω\times(0,\infty),\\ \varepsilon\pa…

This https://arxiv.org/abs/2412.11989 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepe…

Test of lepton flavour universality in $W$-boson decays into electrons and $τ$-leptons using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
A measurement of the ratio of the branching fractions, $R_{τ/e} = B(W \to τν)/ B(W \to e ν)$, is performed using a sample of $W$ bosons originating from top-quark decays to final states containing $τ$-leptons or electrons. This measurement uses $pp$ collisions at $\sqrt{s}=13$ TeV, collected by the ATLAS experiment at the Large Hadron Collider during Run 2, corresponding to an integrated luminosity of 140 fb$^{-1}$. The $W \to τν_τ$ (with $τ\to e ν_e ν_τ$) and $W \to e ν_e$ decays …

libimseti: Libimseti.cz social network (2012)
A network of ratings given between users at Libimseti.cz, a Czech online dating website. A directed edge (i,j) means that user i rate user j, and the corresponding edge weight is the given rating, on a scale of 1-10.
This network has 220970 nodes and 17359346 edges.
Tags: Social, Online, Weighted

This https://arxiv.org/abs/2504.20227 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

On the CFT dual of superstring on AdS$_3$
In this work, we study the proposed duality between superstring on AdS$_3\times$S$^3\times\mathbb{T}^4$ with pure NS-NS flux and a deformed symmetric orbifold CFT. We extract the residues of 3-point string correlators at their next-to-leading poles, which can be expressed as integrals. Because of picture changing, the integrand is not unique. We make an ansatz for its proper form which linearly combines three different picture choices. On the CFT side, we obtain the corresponding residues by do…

The geometry of Frobenius on toric varieties
Javier Carvajal-Rojas, Emre Alp \"Ozavc{\i}
https://arxiv.org/abs/2506.02994 https://

The geometry of Frobenius on toric varieties
We give a geometric description of the positivity of the Frobenius-trace kernel on a $\mathbb{Q}$-factorial projective toric variety. To do so, we define its Frobenius support as well as the notions of $F$-effectiveness for divisors and $1$-cycles. As it turns out, the interaction of the corresponding cone of $F$-effective curves with the Mori cone of curves reflects the type of extremal Mori contractions that the variety can undergo. As a corollary, we obtain that the Frobenius-trace kernel is…

Sparse Gabor representations of metaplectic operators: controlled exponential decay and Schr\"odinger confinement
Elena Cordero, Gianluca Giacchi, Edoardo Pucci, Salvatore Ivan Trapasso
https://arxiv.org/abs/2508.02226

Sparse Gabor representations of metaplectic operators: controlled exponential decay and Schrödinger confinement
Motivated by the phase space analysis of Schrödinger evolution operators, in this paper we investigate how metaplectic operators are approximately diagonalized along the corresponding symplectic flows by exponentially localized Gabor wave packets. Quantitative bounds for the matrix coefficients arising in the Gabor wave packet decomposition of such operators are established, revealing precise exponential decay rates together with subtler dispersive and spreading phenomena. To this aim, we pres…

This https://arxiv.org/abs/2409.09019 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Nonequilibrium Phenomenology of Identified Particle Spectra in Heavy-Ion Collisions at LHC Energies
We employ the Zubarev approach of the non-equilibrium statistical operator to investigate the enhancement of the low-$p_T$ region of pion spectra, introducing an effective pion chemical potential to describe the overpopulation of low-energy pion states. We test a corresponding freeze-out approach by analyzing the transverse-momentum spectra of identified particles measured recently with high precision by the ALICE Collaboration in Pb+Pb collisions at CERN LHC. A blast-wave model and a blast-wav…

Efficient Learning of Balanced Signed Graphs via Sparse Linear Programming
Haruki Yokota, Hiroshi Higashi, Yuichi Tanaka, Gene Cheung
https://arxiv.org/abs/2506.01826

Efficient Learning of Balanced Signed Graphs via Sparse Linear Programming
Signed graphs are equipped with both positive and negative edge weights, encoding pairwise correlations as well as anti-correlations in data. A balanced signed graph is a signed graph with no cycles containing an odd number of negative edges. Laplacian of a balanced signed graph has eigenvectors that map via a simple linear transform to ones in a corresponding positive graph Laplacian, thus enabling reuse of spectral filtering tools designed for positive graphs. We propose an efficient method t…

Vertex-transitive nut graph order-degree existence problem
Ivan Damnjanovi\'c
https://arxiv.org/abs/2507.02481 https://arxiv.org/…

Vertex-transitive nut graph order-degree existence problem
A nut graph is a nontrivial simple graph whose adjacency matrix has a simple eigenvalue zero such that the corresponding eigenvector has no zero entries. It is known that the order $n$ and degree $d$ of a vertex-transitive nut graph satisfy $4 \mid d$, $d \ge 4$, $2 \mid n$ and $n \ge d + 4$; or $d \equiv 2 \pmod 4$, $d \ge 6$, $4 \mid n$ and $n \ge d + 6$. Here, we prove that for each such $n$ and $d$, there exists a $d$-regular Cayley nut graph of order $n$. As a direct consequence, we obtain…

Abstract Formulation of Mean-Field Models and Propagation of Chaos
Tau Shean Lim, Chao Dun Teoh
https://arxiv.org/abs/2508.02224 https://arxiv.org/pdf/2508…

Abstract Formulation of Mean-Field Models and Propagation of Chaos
In this work, we formulate an abstract framework to study mean-field systems. In contrast to most approaches in the available literature which primarily rely on the analysis of SDEs, ours is based on optimal transport and semigroup theory. This allows for the inclusion of a wider range of mean-field particle systems within a unified structure. This new approach involves: (1) constructing an abstract framework using semigroups and generators; (2) formulating a corresponding mean-field evolution …

This https://arxiv.org/abs/2504.15462 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Light front holographic QCD theory in the generalized uncertainty principle framework
In this article, we develop the framework of light-front holographic QCD in the presence of a minimal length scale by incorporating the Generalized Uncertainty Principle (GUP) into the QCD Lagrangian. From this modified theory, we derive a GUP-corrected light-front holographic QCD (LFH QCD) equation and obtain the corresponding hadronic mass spectrum. Our results show that the hadronic mass spectrum acquires an additional GUP-dependent term that increases the masses. This mass enhancement leads…

This https://arxiv.org/abs/2505.20514 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

Spontaneous quantization of the Yang-Mills gradient flow
We apply loop calculus in momentum loop space to the Yang-Mills gradient flow, deriving momentum loop equations for the Wilson loop. These equations possess fixed points corresponding to superpositions of Wilson loops associated with classical Yang-Mills solutions. We identify two distinct classes of solutions: one converging toward a trivial free-field configuration (vanishing field strength) and another converging toward configurations characterized by self-dual field strengths. Both solution…

Multivariate Tutte polynomials of semimatroids
Houshan Fu
https://arxiv.org/abs/2508.00561 https://arxiv.org/pdf/2508.00561

Multivariate Tutte polynomials of semimatroids
We introduce and investigate multivariate Tutte polynomials, dichromatic polynomials, subset-corank polynomials, size-corank polynomials, and rank generating polynomials of semimatroids, which generalize the corresponding polynomial invariants of graphs and matroids. We primarily establish their deletion-contraction recurrences, basis activities expansions, and various convolution identities. These findings naturally extend Kook-Reiner-Stanton's convolution formula and Kung's convolution-multip…

Entanglement spreading and emergent locality in Brownian SYK chains
Onkar Parrikar, Jatin Narde, Harshit Rajgadia, Sandip Trivedi
https://arxiv.org/abs/2508.00060 https://

Entanglement spreading and emergent locality in Brownian SYK chains
The Ryu-Takayanagi (RT) formula and its interpretation in terms of quantum error correction (QEC) implies an emergent locality for the spread of quantum information in holographic CFTs, where information injected at a point in the boundary theory spreads within a sharp light-cone corresponding to the butterfly velocity. This emergent locality is a necessary condition for the existence of a geometric bulk dual with an RT-like formula for entanglement entropy. In this paper, we use tools from QEC…

On 102-avoiding inversion sequences
JiSun Huh, Sangwook Kim, Seunghyun Seo, Heesung Shin
https://arxiv.org/abs/2506.02985 https://arx…

On 102-avoiding inversion sequences
In this article, we provide a bijection between the set of inversion sequences avoiding the pattern 102 and the set of 2-Schröder paths having neither peaks nor valleys and ending with a diagonal step. To achieve this, we introduce two intermediate objects, called UVD paths and labeled $F$-paths, and establish bijections among all four families. For each of these combinatorial objects, we define a natural statistic and enumerate the corresponding structures with respect to this statistic. In a…