Tootfinder

Just finished "Lunar New Year Love Story" written by Gene Luen Yang and illustrated by LeUyen Pham. Despite having just written a big thread about what media get wrong about love and finding a share of those same issues here, I enjoyed it a lot. I've been reading a lot of romance these days and it's got above-average advice, plus lovely illustrations and a mix of interesting Asian-American cultures.
#AmReading

Refugees, intergenerational trauma, child death, abusive family
Also just finished "The Best We Could Do" by Thi Bui, which is the second memoir I've stumbled upon recently that deals with the Vietnamese exodus after the end of the war (House Without Walls by Ching Yeung Russel is the other one, which is written in verse, not illustrated). Bui traces more of the political landscape and history of Vietnam through the stories of both of her parents, and also unpacks a lot of intergenerational trauma, but has less focus on the boat trip out and refugee camp experience, presumably because hers were easier than Russel's.
My thoughts after reading this return repeatedly to all of the impacts that patriarchy and toxic masculinity had on her father, from setting up his father and grandfather to be abusive towards him and the women in their lives, to pushing him deep into depression when he feels unable to fulfill the role of a protective husband, ironically leaving his wife to pick up the slack and ultimately ruining their relationship, to how it teaches him to despise and shirk the caregiver role he's left with, ultimately passing on some measure of trauma to his children. For sure war, abusive family, and child death can happen in the absence of patriarchy and those are in some ways perhaps bigger factors here, but at the same time, Bui's mom copes with most of the same factors in healthier ways.
#AmReading

6: that is illustrated or drawn.
#30AlbumCovers #HipHopCoverArt

6: that is illustrated or drawn.
#30AlbumCovers #HipHopCoverArt

Exponential Discounting under Partial Efficiency
Charles Gauthier
https://arxiv.org/abs/2508.20249 https://arxiv.org/pdf/2508.20249

Exponential Discounting under Partial Efficiency
This paper derives a novel representation of the exponential discounting model that allows one to assess departures from the model via a measure of efficiency. The approach uses a revealed preference methodology that does not make any parametric assumption on the utility function and allows for unrestricted heterogeneity. The method is illustrated using longitudinal data from checkout scanners and gives insights into sources of departure from exponential discounting.

FlexMUSE: Multimodal Unification and Semantics Enhancement Framework with Flexible interaction for Creative Writing
Jiahao Chen, Zhiyong Ma, Wenbiao Du, Qingyuan Chuai
https://arxiv.org/abs/2508.16230 …

FlexMUSE: Multimodal Unification and Semantics Enhancement Framework with Flexible interaction for Creative Writing
Multi-modal creative writing (MMCW) aims to produce illustrated articles. Unlike common multi-modal generative (MMG) tasks such as storytelling or caption generation, MMCW is an entirely new and more abstract challenge where textual and visual contexts are not strictly related to each other. Existing methods for related tasks can be forcibly migrated to this track, but they require specific modality inputs or costly training, and often suffer from semantic inconsistencies between modalities. Th…

Robust Tail Index Estimation under Random Censoring via Minimum Density Power Divergence
Nour Elhouda Guesmia, Abdelhakim Necir, Djamel Meraghni
https://arxiv.org/abs/2507.18737

Robust Tail Index Estimation under Random Censoring via Minimum Density Power Divergence
Based on the minimum density power divergence approach, we propose a robust estimator of the tail index for randomly right-censored data from a Pareto-type distribution. We establish its consistency and asymptotic normality. An extensive simulation study is performed to assess the finite-sample behavior of the estimator in comparison with existing ones. The methodology is further illustrated through an application to a real AIDS survival dataset.

The Gemini mobile app now lets users create "personalized, illustrated storybooks complete with read-aloud narration" that can incorporate uploaded photos (Abner Li/9to5Google)
https://9to5google.com/2025/08/05/gemini-storybooks/

Gemini app can now create custom storybooks, comics, and more
The latest Gemini app feature lets you create “personalized, illustrated storybooks complete with read-aloud narration.” 

Advanced Applications of Generative AI in Actuarial Science: Case Studies Beyond ChatGPT
Simon Hatzesberger, Iris Nonneman
https://arxiv.org/abs/2506.18942

Advanced Applications of Generative AI in Actuarial Science: Case Studies Beyond ChatGPT
This article demonstrates the transformative impact of Generative AI (GenAI) on actuarial science, illustrated by four implemented case studies. It begins with a historical overview of AI, tracing its evolution from early neural networks to modern GenAI technologies. The first case study shows how Large Language Models (LLMs) improve claims cost prediction by deriving significant features from unstructured textual data, significantly reducing prediction errors in the underlying machine learning…

Through the Looking-Glass, by Lewis Carroll. Illustrated by John Tenniel - Standard Ebooks
https://standardebooks.org/ebooks/lewis-carroll/through-the-looking-glass/john-tenniel

Super and Weak Poincar\'e Inequalities for Sticky-Reflected Diffusion Processes
Feng-Yu Wang
https://arxiv.org/abs/2508.18846 https://arxiv.org/pdf/250…

Super and Weak Poincaré Inequalities for Sticky-Reflected Diffusion Processes
As a continuation to \cite{MRW} where the Poincaré and log-Sobolev inequalities were studied for the sticky-reflected Brownian motion on Riemannian manifolds with boundary, this paper establishes the super and weak Poincaré inequalities for more general sticky-reflected diffusion processes. As applications, the convergence rate and uniform integrability of the associated diffusion semigroups are characterized. The main results are illustrated by concrete examples.

Some new properties of the PamPa scheme
R\'emi Abgrall, Philipp \"Offner, Yongle Liu
https://arxiv.org/abs/2508.17147 https://arxiv.org/pdf/2508.1…

Some new properties of the PamPa scheme
In this paper, we provide a few new properties of Active Flux (AF)/Point-Average-Moment PolynomiAl-interpreted (PAMPA) schemes. First, we show, in full generality, that the Active Flux (AF)/Point-Average-Moment PolynomiAl-interpreted (PAMPA) schemes can be interpreted in such a way that the discontinuous Galerkin (dG) scheme is one of their building blocks. Secondly we provide some intrinsic bound preserving properties. This is also illustrated numericaly. Last, we show, at least in one dimensi…

Lack-of-fit reduction in the path-integral formalism
Katerina Mlada, Michal Pavelka, Vaclav Klika
https://arxiv.org/abs/2506.20242 https://

Lack-of-fit reduction in the path-integral formalism
We present a reformulation of the lack-of-fit reduction in non-equilibrium thermodynamics using the path-integral formalism. The reformulation is based on the Onsager-Machlup variational principle, and it allows us to minimize the action while keeping only thermodynamically relevant solutions. The reduced evolution consists of a Hamiltonian vector field and a gradient flow. The reformulation is illustrated on the Kac-Zwanzig model, where we show how irreversibility emerges from purely Hamiltoni…

The good guy with a gun problem, illustrated:
https://www.sfgate.com/news/article/what-to-know-about-the-shooting-death-at-a-utah-20380356.php

The good guy with a gun problem, illustrated:
https://www.sfgate.com/news/article/what-to-know-about-the-shooting-death-at-a-utah-20380356.php

BoSS: Beyond-Semantic Speech
Qing Wang, Zehan Li, Hang Lv, Hongjie Chen, Yaodong Song, Jian Kang, Jie Lian, Jie Li, Yongxiang Li, Zhongjiang He, Xuelong Li
https://arxiv.org/abs/2507.17563

BoSS: Beyond-Semantic Speech
Human communication involves more than explicit semantics, with implicit signals and contextual cues playing a critical role in shaping meaning. However, modern speech technologies, such as Automatic Speech Recognition (ASR) and Text-to-Speech (TTS) often fail to capture these beyond-semantic dimensions. To better characterize and benchmark the progression of speech intelligence, we introduce Spoken Interaction System Capability Levels (L1-L5), a hierarchical framework illustrated the evolution…

Design Analysis of an Innovative Parallel Robot for Minimally Invasive Pancreatic Surgery
Doina Pisla (CESTER), Alexandru Pusca (CESTER, Technical University of Cluj-Napoca), Andrei Caprariu (CESTER, Technical University of Cluj-Napoca), Adrian Pisla (CESTER, Technical University of Cluj-Napoca), Bogdan Gherman (LS2N, LS2N - \'equipe RoMas), Calin Vaida (LS2N, LS2N - \'equipe RoMas), Damien Chablat (LS2N, LS2N - \'equipe RoMas)

Design Analysis of an Innovative Parallel Robot for Minimally Invasive Pancreatic Surgery
This paper focuses on the design of a parallel robot designed for robotic assisted minimally invasive pancreatic surgery. Two alternative architectures, called ATHENA-1 and ATHENA-2, each with 4 degrees of freedom (DOF) are proposed. Their kinematic schemes are presented, and the conceptual 3D CAD models are illustrated. Based on these, two Finite Element Method (FEM) simulations were performed to determine which architecture has the higher stiffness. A workspace quantitative analysis is perfor…

Shoutout on International Non-Binary People’s Day! 💛🤍💜🖤
Celebrating all the amazing non-binary folks out there, especially my favorite LGBTQIA content creator, Lynn Saga!
https://www.youtube.com/@lynnsaga1397
🏳️‍🌈 🏳️‍⚧️

“And note the rare special case illustrated by Harry S Truman: the S in this name never takes a full stop, because it's not an abbreviation for anything; President #Truman's parents actually gave him the middle name S.”
Wow, just wow. Didn't know. My world view is crumbling.

Orchestration of Music by Grammar Systems
Jozef Maki\v{s} (Faculty of Information Technology, Brno University of Technology), Alexander Meduna (Faculty of Information Technology, Brno University of Technology), Zbyn\v{e}k K\v{r}ivka (Faculty of Information Technology, Brno University of Technology)
https://arxiv.org/abs/2507.15314

Orchestration of Music by Grammar Systems
This application-oriented study concerns computational musicology, which makes use of grammar systems. We define multi-generative rule-synchronized scattered-context grammar systems (without erasing rules) and demonstrates how to simultaneously make the arrangement of a musical composition for performance by a whole orchestra, consisting of several instruments. Primarily, an orchestration like this is illustrated by examples in terms of classical music. In addition, the orchestration of jazz co…

“This considers how two modern cameras handle a difficult color challenge, illustrated by photos of a perfect rose and a piano.” https://www.tbray.org/ongoing/When/202x/2025/05/31/Colors

Perfectly Different Colors

And what you need to do is to call your representatives and make sure these cuts don't happen
https://bsky.app/profile/johnmoralestv.bsky.social/post/3lqo2siaanc2b

Certain geometric properties of planar harmonic mapping involving four parameter Wright functions
Anish Kumar
https://arxiv.org/abs/2506.18180 https://

Certain geometric properties of planar harmonic mapping involving four parameter Wright functions
The primary aim of this paper is to construct harmonic mapping associated with four parameter Wright functions. Further sufficient conditions have been established so that this harmonic mapping satisfies geometric properties such as harmonic starlikeness and convexity. Moreover, we examine relation between several subclasses of family of harmonic close-to-convexity mappings. The results obtained in this paper are novel and their significance is illustrated by several consequences.

From Paranoia to Compliance: The Bumpy Road of System Hardening Practices on Stack Exchange
Niklas Busch (CISPA Helmholtz Center for Information Security), Philip Klostermeyer (CISPA Helmholtz Center for Information Security), Jan H. Klemmer (CISPA Helmholtz Center for Information Security), Yasemin Acar (Paderborn University), Sascha Fahl (CISPA Helmholtz Center for Information Security)

From Paranoia to Compliance: The Bumpy Road of System Hardening Practices on Stack Exchange
Hardening computer systems against cyberattacks is crucial for security. However, past incidents illustrated, that many system operators struggle with effective system hardening. Hence, many computer systems and applications remain insecure. So far, the research community lacks an in-depth understanding of system operators motivation, practices, and challenges around system hardening. With a focus on practices and challenges, we qualitatively analyzed 316 Stack Exchange (SE) posts related to sy…

A potential theory approach to the capillarity-driven Hele-Shaw problem
Bogdan-Vasile Matioc, Christoph Walker
https://arxiv.org/abs/2508.15491 https://arx…

A potential theory approach to the capillarity-driven Hele-Shaw problem
In this paper, we demonstrate that potential theory provides a powerful framework for analyzing quasistationary fluid flows in bounded geometries, where the bulk dynamics are governed by elliptic equations with constant coefficients. This approach is illustrated by the two-dimensional Hele-Shaw problem with surface tension, for which we derive local well-posedness and parabolic smoothing in (almost) optimal function spaces. In addition, we establish a generalized principle of linearized stabili…

Image2Net: Datasets, Benchmark and Hybrid Framework to Convert Analog Circuit Diagrams into Netlists
Haohang Xu, Chengjie Liu, Qihang Wang, Wenhao Huang, Yongjian Xu, Weiyu Chen, Anlan Peng, Zhijun Li, Bo Li, Lei Qi, Jun Yang, Yuan Du, Li Du
https://arxiv.org/abs/2508.13157

Image2Net: Datasets, Benchmark and Hybrid Framework to Convert Analog Circuit Diagrams into Netlists
Large Language Model (LLM) exhibits great potential in designing of analog integrated circuits (IC) because of its excellence in abstraction and generalization for knowledge. However, further development of LLM-based analog ICs heavily relies on textual description of analog ICs, while existing analog ICs are mostly illustrated in image-based circuit diagrams rather than text-based netlists. Converting circuit diagrams to netlists help LLMs to enrich the knowledge of analog IC. Nevertheless, pr…

Electron charge dynamics and charge separation: A response theory approach
Lionel Lacombe, Lucia Reining, Vitaly Gorelov
https://arxiv.org/abs/2508.14551 https://

Electron charge dynamics and charge separation: A response theory approach
This study applies response theory to investigate electron charge dynamics, with a particular focus on charge separation. We analytically assess the strengths and limitations of linear and quadratic response theories in describing charge density and current, illustrated by a model that simulates charge transfer systems. While linear response accurately captures optical properties, the quadratic response contains the minimal ingredients required to describe charge dynamics and separation. Notabl…

Eigenmode-Guided Amplification via Spatiotemporal Active Acoustic Metamaterials
Wai Chun Wong, Greggory Chaplain, Jensen Li
https://arxiv.org/abs/2506.17687

Eigenmode-Guided Amplification via Spatiotemporal Active Acoustic Metamaterials
We present a spatiotemporal gain-loss framework for selective acoustic mode amplification illustrated using coupled Helmholtz resonators. In our scheme, the gain or loss in each resonator is determined by the amplitude in adjacent cavities, forming a non-Hermitian yet energy-conserving system. Our scheme enables the system to collapse toward the eigenstate of an effective linear Hamiltonian with the eigenvalue of largest imaginary part, serving as a fixed-point attractor. In dimer systems, we i…

Ce graphe dit tout...
This graph says it all...
Source (in French but nicely illustrated) https://www.lemonde.fr/les-decodeurs/visuel/2025/07/02/comprendre-le-rechauffement-climatiq…

Comprendre le réchauffement climatique : comment nous avons bouleversé la planète
Deux siècles ont suffi à l’humanité pour dérégler le climat et enclencher une hausse des températures aux effets potentiellement dramatiques. Dans ce format visuel, « Le Monde » retrace cette évolution et les mécanismes à l’œuvre dans ce bouleversement.

Robust Resource Allocation for Pinching-Antenna Systems under Imperfect CSI
Ming Zeng, Xianbin Wang, Yuanwei Liu, Zhiguo Ding, George K. Karagiannidis, H. Vincent Poor
https://arxiv.org/abs/2507.12582

Robust Resource Allocation for Pinching-Antenna Systems under Imperfect CSI
Pinching-antenna technology has lately showcased its promising capability for reconfiguring wireless propagation environments, especially in high-frequency communication systems like millimeter-wave and terahertz bands. By dynamically placing the antenna over a dielectric waveguide, line-of-sight (LoS) connections can be made to significantly improve system performance. Although recent research have illustrated the advantages of pinching-antenna-assisted designs, they mainly presuppose complete…

Quantifying coherence of quantum channels based on the generalized $\alpha$-$z$-relative R\'{e}nyi entropy
Jiaorui Fan, Zhaoqi Wu, Shao-Ming Fei
https://arxiv.org/abs/2506.10796

Quantifying coherence of quantum channels based on the generalized $α$-$z$-relative Rényi entropy
By using the Choi-Jamiołkowski isomorphism, we propose a well-defined coherence measure of quantum channels based on the generalized $α$-$z$-relative Rényi entropy. In addition, we present an alternative coherence measure of quantum channels by quantifying the commutativity between the channels and the completely dephasing channels with the generalized $α$-$z$-relative Rényi entropy. Some elegant properties of the measures are illustrated in detail. Explicit formulas of these coherence mea…

Oscillator Algebra in Complex Position-Dependent Mass Systems
M. I. Estrada-Delgado, Z. Blanco-Garcia
https://arxiv.org/abs/2508.09260 https://arxiv.org/pd…

Oscillator Algebra in Complex Position-Dependent Mass Systems
This work introduces non-Hermitian position-dependent mass Hamiltonians characterized by complex ladder operators and real, equidistant spectra. By imposing the Heisenberg-Weyl algebraic structure as a constraint, we derive the corresponding potentials, ladder operators, and eigenfunctions. The method provides a systematic procedure for constructing exactly solvable models for arbitrary mass profiles. Specific cases are illustrated for quadratic, cosenoidal, and exponential mass functions.

Starobinsky in Stereo: SKA-CMB Synergy in SBI
Benedikt Schosser, Caroline Heneka, Bj\"orn Malte Sch\"afer
https://arxiv.org/abs/2508.10094 https://

Starobinsky in Stereo: SKA-CMB Synergy in SBI
Modern machine learning techniques can unlock the vast cosmological information encoded in forthcoming Square Kilometre Array (SKA) observations. We show that tomographic 21 cm data from the reionisation era can yield stringent tests of inflationary models - here illustrated with Starobinsky $R+R^2$ inflation. Using a simulation-based inference (SBI) framework, we compare neural summaries (convolutional network and vision transformer) with a traditional power spectrum summary and perform a full…

Existence results for the Cox-Ingersoll-Ross model with variable exponent diffusion
Mustafa Avci
https://arxiv.org/abs/2507.17173 https://arxiv.org/pdf/250…

Existence results for the Cox-Ingersoll-Ross model with variable exponent diffusion
We propose a new stochastic model where the diffusion coefficient involves a state-dependent variable exponent function $p(\cdot)$. This new theoretically flexible framework generalizes the classical Cox-Ingersoll-Ross model. The existence, uniqueness, higher moment and martingale properties of solutions are analyzed. The validity and efficiency of the model is illustrated with numerical experiments.

On a novel probabilistic Sampling Kantorovich operators and their application
Digvijay Singh, Rahul Shukla, Karunesh Kumar Singh
https://arxiv.org/abs/2506.12053

On a novel probabilistic Sampling Kantorovich operators and their application
This article starts with the fundamental theory of stochastic type convergence and the significance of uniform integrability in the context of expectation value. A novel probabilistic sampling kantorovich (PSK-operators) is established with the help of classical sampling operators (SK-operators). We establish the proof of the fundamental theorem of approximation and a lemma corresponding to the PSK- operators. Moreover, some examples are illustrated not only in numerical form but also in a deta…

Evaluation of a deliberate-practice informed supplemental intervention in graduate Quantum Mechanics
Michael E. Robbins, Guillaume M. Laurent, Eric W. Burkholder
https://arxiv.org/abs/2508.09917

Evaluation of a deliberate-practice informed supplemental intervention in graduate Quantum Mechanics
Despite the prevalence of physics education research literature related to problem solving, recent studies have illustrated that opportunities for ``authentic'' problem solving -- conceptualized as making decisions with limited information using one's physics knowledge -- are limited at both the graduate and undergraduate levels in physics curricula. Building on one of these studies, we designed a supplemental intervention for a graduate-level quantum mechanics course which scaffolded the pract…

Identifiability through special linear measurements
Fulvio Gesmundo, Alexandros Grosdos, Andr\'e Uschmajew
https://arxiv.org/abs/2505.24328 https://

Identifiability through special linear measurements
We show that one can always identify a point on an algebraic variety $X$ uniquely with $\dim X +1$ generic linear measurements taken themselves from a variety under minimal assumptions. As illustrated by several examples the result is sharp, that is, $\dim X$ measurements are in general not enough for unique identifiability.

Just finished "Decelerate Blue" written by Adam Rapp and illustrated by Mike Cavallaro. It's a dystopian graphic novel that I found... not that great. Maybe the best thing about it was the world-building around the propaganda language everyone is forced to speak, but overall I found the plot construction and characters to be underwhelming.
Despite being a book about resistance to fascist oppression, it doesn't meaningfully engage with any major axes of oppression like patriarchy, racism, capitalism, or colonialism, and it doesn't offer an interesting lessons on how to conduct resistance or what long-term outcomes one might hope for.
First graphic novel I've checked out in a while that I didn't really like that much.
#AmReading

For the toot.community branding, I illustrated two Elephants with their trunks entwined producing a musical note together. This communicates the community values of respect and open dialogue, and their motto "Be excellent to each other!"
#Branding #Design #Mastodon #TootCommunity #Logo

This https://arxiv.org/abs/2506.01932 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Nonlocal pseudo-symmetries and Bäcklund transformations as $\mathcal{C}$-morphisms
In this paper, we show how factorization with respect to nonlocal pseudosymmetries allows one to obtain Bäcklund transformations, interpreted as nonlocal $\mathcal{C}$-morphisms of differential equations. This approach is illustrated through several examples.

Methods for pitch analysis in contemporary popular music: multiple pitches from harmonic tones in Vitalic's music
Emmanuel Deruty, David Meredith, Maarten Grachten, Pascal Arbez-Nicolas, Andreas Hasselholt J{\o}rgensen, Oliver S{\o}nderm{\o}lle Hansen, Magnus Stensli, Christian N{\o}rk{\ae}r Petersen
https://arxiv.org/abs/25…

Methods for pitch analysis in contemporary popular music: multiple pitches from harmonic tones in Vitalic's music
Aims. This study suggests that the use of multiple perceived pitches arising from a single harmonic complex tone is an active and intentional feature of contemporary popular music. The phenomenon is illustrated through examples drawn from the work of electronic artist Vitalic and others. Methods. Two listening tests were conducted: (1) evaluation of the number of simultaneous pitches perceived from single harmonic tones, and (2) manual pitch transcription of sequences of harmonic tones. Relat…

Symmetry Classification for Alternating Excitons in Two-Dimensional Altermagnets
Jiayu David Cao, Konstantin S. Denisov, Yuntian Liu, Igor Zutic
https://arxiv.org/abs/2506.05753

Symmetry Classification for Alternating Excitons in Two-Dimensional Altermagnets
Excitons, bound electron-holes states, often dominate the optical response of two-dimensional (2D) materials and reflect their inherent properties, including spin-orbit coupling, magnetic ordering, or band topology. By focusing on a growing class of collinear antiferromagnets with a nonrelativistic spin splitting, referred to also as altermagnets (AM), we propose a theoretical framework based on the spin space group (SSG) to elucidate their resulting excitons. Our approach is illustrated on 2D …

Scalable Quantum State Preparation for Encoding Genomic Data with Matrix Product States
Floyd M. Creevey, Hitham T. Hassan, James McCafferty, Lloyd C. L. Hollenberg, Sergii Strelchuk
https://arxiv.org/abs/2508.06184

Scalable Quantum State Preparation for Encoding Genomic Data with Matrix Product States
As quantum computing hardware advances, the need for algorithms that facilitate the loading of classical data into the quantum states of these devices has become increasingly important. This study presents a method for producing scalable quantum circuits to encode genomic data using the Matrix Product State (MPS) formalism. The method is illustrated by encoding the genome of the bacteriophage $ΦX174$ into a 15-qubit state, and analysing the trade-offs between MPS bond dimension, reconstruction…

Solutions of the spray flamelet equations in a non-monotonic mixture fraction space
Felipe Huenchuguala, Luis Fuenzalida, Oscar Orellana, Arne Scholtissek, Christian Hasse, Eva Gutheil, Hernan Olguin
https://arxiv.org/abs/2508.00146

Solutions of the spray flamelet equations in a non-monotonic mixture fraction space
Solving the spray flamelet equations in composition space is very challenging, which is attributable to the fact that the maximum value of the mixture fraction, $Z_\mathrm{max}$, is a priori unknown in such flames. In this work, an analytical solution for this quantity is proposed, which allows its determination in spray flames subject to imposed quadratic evaporation profiles. It is then illustrated how the proposed approach allows to effectively cover the solution space of the spray flamelet …

Affinization of algebraic structures: Leibniz algebras
Tomasz Brzezi\'nski, Krzysztof Radziszewski, Brais Ramos P\'erez
https://arxiv.org/abs/2506.23398

Affinization of algebraic structures: Leibniz algebras
A general procedure of affinization of linear algebra structures is illustrated by the case of Leibniz algebras. Specifically, the definition of an affine Leibniz bracket, that is, a bi-affine operation on an affine space that at each tangent vector space becomes a (bi-linear) Leibniz bracket in terms of a tri-affine operation called a Leibnizian, is given. An affine space together with such an operation is called a Leibniz affgebra. It is shown that any Leibniz algebra can be extended to a fam…

Symmetry-preserving neural networks in lattice field theories
Matteo Favoni
https://arxiv.org/abs/2506.12493 https://arxiv.org/pdf/25…

Symmetry-preserving neural networks in lattice field theories
This thesis deals with neural networks that respect symmetries and presents the advantages in applying them to lattice field theory problems. The concept of equivariance is explained, together with the reason why such a property is crucial for the network to preserve the desired symmetry. The benefits of choosing equivariant networks are first illustrated for translational symmetry on a complex scalar field toy model. The discussion is then extended to gauge theories, for which Lattice Gauge Eq…

Convergence of Normal Form Power Series for Infinite-Dimensional Lie Pseudo-Group Actions
Peter J. Olver, Masoud Sabzevari, Francis Valiquette
https://arxiv.org/abs/2506.08869

Convergence of Normal Form Power Series for Infinite-Dimensional Lie Pseudo-Group Actions
We prove the convergence of normal form power series for suitably nonsingular analytic submanifolds under a broad class of infinite-dimensional Lie pseudo-group actions. Our theorem is illustrated by a number of examples, and includes, as a particular case, Chern and Moser's celebrated convergence theorem for normal forms of real hypersurfaces. The construction of normal forms relies on the equivariant moving frame method, while the convergence proof is based on the realization that the normal …

Symmetries of electron interactions in Hubbard models of unconventional superconductors
Sergei Urazhdin, Yiou Zhang
https://arxiv.org/abs/2507.02296 https:…

Symmetries of electron interactions in Hubbard models of unconventional superconductors
We use symmetry arguments to show that the matrix elements of electron-electron interaction on a lattice reach extrema in states composed of wavevectors near high-symmetry points of the Brillouin zone. The mechanism is illustrated by minimal models of cuprates and Fe-based superconductors, where this dependence originates from the wavevector-dependent orbital composition of wavefunctions. We discuss how these dependences can facilitate finite-momentum pairing. Our results provide symmetry-based…

A note on generating Voronoi cells with a given size distribution
Georg Stadler, Gonzalo G. De Diego
https://arxiv.org/abs/2508.06630 https://arxiv.org/pdf…

A note on generating Voronoi cells with a given size distribution
This note describes a simple method to draw random points such that the cells of the corresponding Voronoi tesselation (approximately) satisfy a desired size distribution, for instance, follow a power law. The method is illustrated and numerically verified in two dimensions, and we also provide a simple implementation.

This https://arxiv.org/abs/2410.11544 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Effective Hamiltonians from Spin Adapted Configuration Interaction
A generalised extraction procedure for magnetic interactions using effective Hamiltonians is presented that is applicable to systems with more than two sites featuring local spins $S_i \geq 1$. To this end, closed, non-recursive expressions pertaining to chains of arbitrary equal spins are derived with the graphical method of angular momentum. The method is illustrated by extracting magnetic couplings from ab initio calculations on a [CaMn$_3$$^{(IV)}$O$_4$] cubane. An extension to non-sequenti…

Just finished "Leap" by Simina Popescu. A really wonderful queer teen graphic novel that weaves romantic and platonic relationships together into a beautiful and hopeful story. The way Popescu captures choreography on an illustrated page is kinda magical, and since the whole book is set in a ballet school, we get to see plenty of it.
#AmReading

Nonparametric Estimation For Censored Circular Data
Nicolas Conanec
https://arxiv.org/abs/2508.06150 https://arxiv.org/pdf/2508.06150

Nonparametric Estimation For Censored Circular Data
We study the problem of estimating the probability density function of a circular random variable subject to censoring. To this end, we propose a fully computable quotient estimator that combines a projection estimator on linear sieves with a method-of-moments approach. We derive an upper bound for its mean integrated squared error and establish convergence rates when the underlying density lies in a Sobolev class. The practical performance of the estimator is illustrated through simulated exam…

Nonlocal pseudo-symmetries and B\"acklund transformations as $\mathcal{C}$-morphisms
Diego Catalano Ferraioli, Tarc\'isio Castro Silva
https://arxiv.org/abs/2506.01932

Nonlocal pseudo-symmetries and Bäcklund transformations as $\mathcal{C}$-morphisms
In this paper, we show how factorization with respect to nonlocal pseudosymmetries allows one to obtain Bäcklund transformations, interpreted as nonlocal $\mathcal{C}$-morphisms of differential equations. This approach is illustrated through several examples.

Thinning algorithms for the Monte Carlo simulation of kinetic Ising models
V. I. Tokar, H. Dreyss\'e
https://arxiv.org/abs/2505.24414 https://

Thinning algorithms for the Monte Carlo simulation of kinetic Ising models
The thinning method for numerical generation of the nonhomogeneous Poisson process (NHPP) arrival times has been adapted to accelerate Monte Carlo simulations of the kinetic Ising models (KIMs) with the Glauber spin-flip dynamics. The performance of the suggested algorithms has been illustrated by simulation of the decay of metastable states in stationary KIMs and of hysteresis in KIMs in a periodic external field. The thinning has been implemented by means of piecewise constant majorizing func…

Mixed dynamics from the classical and quantum ergodic hierarchy
Ignacio S. Gomez, Federico H. Holik
https://arxiv.org/abs/2507.05603 https://

Mixed dynamics from the classical and quantum ergodic hierarchy
Based on the classical and quantum ergodic hierarchy, a framework for mixed systems with a phase space composed by two uncorrelated integrable and chaotic regions is presented. It provides some features of mixed systems connecting the intuitive notion of a mixed phase space with the mixing level of the ergodic hierarchy. The formalism is illustrated with the kicked rotator.

Truncating loopy tensor networks by zero-mode gauge fixing
Ihor Sokolov, Yintai Zhang, Jacek Dziarmaga
https://arxiv.org/abs/2508.00338 https://arxiv.org/p…

Truncating loopy tensor networks by zero-mode gauge fixing
Loopy tensor networks have internal correlations that often make their compression inefficient. We show that even local bond optimization can make better use of the insight it has locally into relevant loop correlations. By cutting the bond, we define a set of states whose linear dependence can be used to truncate the bond dimension. The linear dependence is eliminated with zero modes of the states' metric tensor. The method is illustrated by a series of examples for the infinite pair entangled…

Algebraic Framework for Discrete Dynamical Systems over Laurent Series
Ramamonjy Aandriamifidisoa, Loukman Ben Saindou
https://arxiv.org/abs/2508.04708 https://

Algebraic Framework for Discrete Dynamical Systems over Laurent Series
We generalize the framework of discrete algebraic dynamical systems \cite{Andriamifidisoa2014} to Laurent polynomials and series over \(\Z^r\), enabling the modeling of bidirectional discrete systems. By redefining the spaces \(\Dprime\) and \(\Aprime\), introducing a bilinear mapping (defined as the scalar product in Section 3), and extending the shift operator, we preserve the duality and adjoint properties of \cite{Andriamifidisoa2014}. These properties are rigorously proved and illustrated …

Impact of Outreach on Physics Student Development: Qualitative Results from a National Survey
Jonathan D. Perry, Carlee Garrett, Isabella Oaks, James Hirons, Toni Sauncy, Jonan P. Donaldson, Susan White, Rachel L. Ivie, Tatiana Erukhimova
https://arxiv.org/abs/2506.22700

Impact of Outreach on Physics Student Development: Qualitative Results from a National Survey
The role of student experiences in physics beyond the classroom which support their development has been the subject of exciting research in recent years. Results, typically from small studies at single institutions, have illustrated that facilitating informal physics experiences for non-scientists can enhance student disciplinary identity, learning, sense of belonging, and more. However, it is essential to examine whether these impacts are the sole provenance of institutions with well-develope…

On an analogy between the Wiener--Hopf formulations of discrete and continuous diffraction problems
A. I. Korolkov, R. C. Assier, A. V. Kisil
https://arxiv.org/abs/2507.04979

On an analogy between the Wiener--Hopf formulations of discrete and continuous diffraction problems
This article is dedicated to unifying the framework used to derive the Wiener--Hopf equations arising from some discrete and continuous wave diffraction problems.The main tools are the discrete Green's identity and the appropriate notion of discrete normal derivative. The resulting formal analogy between the Wiener--Hopf equations allows one to effortlessly move between the discrete and continuous formulations. The validity of this novel analogy is illustrated through several famous two-dimensi…

This https://arxiv.org/abs/2105.05584 has been replaced.
link: https://scholar.google.com/scholar?q=a

Consistent approximate Q-conditional symmetries of PDEs: application to a hyperbolic reaction-diffusion-convection equation
Within the theoretical framework of a recently introduced approach to approximate Lie symmetries of differential equations containing small terms, which is consistent with the principles of perturbative analysis, we define accordingly approximate Q-conditional symmetries of partial differential equations. The approach is illustrated by considering the hyperbolic version of a reaction-diffusion-convection equation. By looking for its first order approximate Q-conditional symmetries, we are able …