Tootfinder

from my link log —
The evolution of logical replication in PostgreSQL: a historical overview.
https://www.enterprisedb.com/blog/evolution-logical-replication-postgresql-firsthand-account
saved 2025-09-12

The Evolution of Logical Replication in PostgreSQL: A Firsthand Account
PostgreSQL has come a long way from its early days as a single-node database. If you’ve worked with PostgreSQL for a while, you’ll know its journey to robust logical replication was anything but straightforward, shaped by community efforts, creative workarounds, and an ever-evolving need for high availability and flexibility. Having been closely involved in projects like londiste, pglogical, multiple iterations of PGD (BDR) and the built-in logical replication in PostgreSQL itself, I’ve h…

That question is in itself dishonest, but of course even more so if you just recently made the maps very specifically not be to be open source any longer! 😂
So you can have some non-openly licensed maps, developed on GitHub. Or you could have some openly licensed maps, developed on @…, by choosing @… 😉
https://fosstodon.org/@organicmaps/115203780434338817

Moscow on edge: Trump’s shift to support Kyiv sends Kremlin into panic mode as nuclear fears rise: https://benborges.xyz/2025/07/14/moscow-on-edge-trumps-shift.html

Complex three-dimensional rearing environments amplify compensatory plasticity following early blindness https://www.biorxiv.org/content/10.1101/2025.05.02.651847v1 "underscoring the role of experience in directing compensatory plasticity following early sensory loss.&q…

Complex three-dimensional rearing environments amplify compensatory plasticity following early blindness
The neocortex has a remarkable capacity to alter its functional organization and connectivity in response to sensory loss, particularly if this loss occurs early in life. A key question is whether this cross-modal reorganization is driven by sensory deprivation itself or through enhanced use of the spared senses. We investigated how different rearing environments shape neural responses in primary somatosensory cortex (S1) of short-tailed opossums ( Monodelphis domestica) , following elimination…

Looking back at a dramatic Gehrenspitze and its pass (aka "Gehrenjoch")...
Another close-up impression of the pass itself (and view in the opposite direction):
https://mastodon.thi.ng/@toxi/115050332753156722

The PacifAIst Benchmark:Would an Artificial Intelligence Choose to Sacrifice Itself for Human Safety?
Manuel Herrador
https://arxiv.org/abs/2508.09762 https://

The PacifAIst Benchmark:Would an Artificial Intelligence Choose to Sacrifice Itself for Human Safety?
As Large Language Models (LLMs) become increasingly autonomous and integrated into critical societal functions, the focus of AI safety must evolve from mitigating harmful content to evaluating underlying behavioral alignment. Current safety benchmarks do not systematically probe a model's decision-making in scenarios where its own instrumental goals - such as self-preservation, resource acquisition, or goal completion - conflict with human safety. This represents a critical gap in our ability t…

Echoes of Agreement: Argument Driven Opinion Shifts in Large Language Models
Avneet Kaur
https://arxiv.org/abs/2508.09759 https://arxiv.org/pdf/2508.09759

Echoes of Agreement: Argument Driven Opinion Shifts in Large Language Models
There have been numerous studies evaluating bias of LLMs towards political topics. However, how positions towards these topics in model outputs are highly sensitive to the prompt. What happens when the prompt itself is suggestive of certain arguments towards those positions remains underexplored. This is crucial for understanding how robust these bias evaluations are and for understanding model behaviour, as these models frequently interact with opinionated text. To that end, we conduct experim…

On $q$-analogs of the $3x 1$ Dynamical System
Kenneth G. Monks
https://arxiv.org/abs/2508.10153 https://arxiv.org/pdf/2508.10153

On $q$-analogs of the $3x+1$ Dynamical System
The $3x+1$ Conjecture asserts that the $T$-orbit of every positive integer $x$ contains $1$, where $T$ maps $x$ to $x/2$ for $x$ even and to $(3x+1)/2$ for $x$ odd. Several authors have studied the analogous map, $T_q$, which maps $x\in F_2[q]$ to $x/q$ if $q$ divides $x$ and $((1+q)x+1)/q$ otherwise. In particular, they showed that the $T_q$-orbit of every polynomial contains $1$. This seems analogous to the $3x+1$ conjecture, but does not prove the conjecture itself, as the dynamical systems …

A Deep Learning based Signal Dimension Estimator with Single Snapshot Signal in Phased Array Radar Application
Yugang Ma, Yonghong Zeng, Sumei Sun, Gary Lee, Ernest Kurniawan, Francois Chin Po Shin
https://arxiv.org/abs/2508.10263

A Deep Learning based Signal Dimension Estimator with Single Snapshot Signal in Phased Array Radar Application
Signal dimension, defined here as the number of copies with different delays or angular shifts, is a prerequisite for many high-resolution delay estimation and direction-finding algorithms in sensing and communication systems. Thus, correctly estimating signal dimension itself becomes crucial. In this paper, we present a deep learning-based signal dimension estimator (DLSDE) with single-snapshot observation in the example application of phased array radar. Unlike traditional model-based and exi…

Power coupled to the slow wave resonance cone in cold plasma
Wouter Tierens
https://arxiv.org/abs/2509.10276 https://arxiv.org/pdf/2509.10276

Power coupled to the slow wave resonance cone in cold plasma
We consider the power coupled to the plasma from a cylindrical source emitting resonance cones, propagative slow waves which exist in low density magnetized plasmas when the signs of the Stix parameters S and P differ. In this work, we calculate this power for the first time for any collisionality, and show that it remains finite in the cold collisionless limit, even as the radiofrequency electric field itself, and the associated power absorption density, is singular. We give the main parameter…

Sparse Polyak: an adaptive step size rule for high-dimensional M-estimation
Tianqi Qiao, Marie Maros
https://arxiv.org/abs/2509.09802 https://arxiv.org/pdf…

Sparse Polyak: an adaptive step size rule for high-dimensional M-estimation
We propose and study Sparse Polyak, a variant of Polyak's adaptive step size, designed to solve high-dimensional statistical estimation problems where the problem dimension is allowed to grow much faster than the sample size. In such settings, the standard Polyak step size performs poorly, requiring an increasing number of iterations to achieve optimal statistical precision-even when, the problem remains well conditioned and/or the achievable precision itself does not degrade with problem size.…

#proton

Multipulse Soliton Attractors Facilitated by High-Birefringence Fibers
Xuepeng Wang, Haoyu Feng, Zhentao Ju, Boris A. Malomed, Chaoqing Dai
https://arxiv.org/abs/2508.10274 http…

Multipulse Soliton Attractors Facilitated by High-Birefringence Fibers
The stability of optical solitons is a crucial factor in various applications. This work reveals a novel stable multipulse soliton attractor in fiber lasers. The attractor represents a bound state of multiple solitons, pulling other dynamical states toward itself. By introducing a polarization-maintaining fiber (PMF), the enhanced birefringence in the cavity induces the differential group delay (DGD) between the polarization components of the pulse, leading to soliton splitting and, ultimately,…

"[F]ormer national security officer Tom Nichols argued that this quest manifests itself in several ways, most prominently in the politicization of the intelligence community. ...Kash Patel and ...Tulsi Gabbard are reportedly using artificial intelligence and lie detector tests to determine whether their employees are aligned with Trump."
Trump's quest for MAGA purity is built on a 'flatly ridiculous' idea: analyst - Raw Story
https://www.rawstory.com/trump-2673149478/

On the $(k,\ell)$-multiset anonymity measure for social graphs
Alejandro Estrada-Moreno, Elena Fern\'andez, Dorota Kuziak, Manuel Mu\~noz-M\'arquez, Rolando Trujillo-Rasua, Ismael G. Yero
https://arxiv.org/abs/2507.08433

On the $(k,\ell)$-multiset anonymity measure for social graphs
The publication of social graphs must be preceded by a rigorous analysis of privacy threats against social graph users. When the threat comes from inside the social network itself, the threat is called an active attack, and the de-facto privacy measure used to quantify the resistance to such an attack is the $(k,\ell)$-anonymity. The original formulation of $(k,\ell)$-anonymity represents the adversary's knowledge as a vector of distances to the set of attacker nodes. In this article, we argue …

Post-reduction inference for confidence sets of models
Heather Battey, Daniel Garcia Rasines, Yanbo Tang
https://arxiv.org/abs/2507.10373 https://

Post-reduction inference for confidence sets of models
Sparsity in a regression context makes the model itself an object of interest, pointing to a confidence set of models as the appropriate presentation of evidence. A difficulty in areas such as genomics, where the number of candidate variables is vast, arises from the need for preliminary reduction prior to the assessment of models. The present paper considers a resolution using inferential separations fundamental to the Fisherian approach to conditional inference, namely, the sufficiency/co-suf…

Speculative politics
As an anarchist (okay, maybe not in practice), I'm tired of hearing why we have to suffer X and Y indignity to "preserve the rule of law" or "maintain Democratic norms." So here's an example of what representative democracy (a form of government that I believe is inherently flawed) could look like if its proponents had even an ounce of imagination, and/or weren't actively trying to rig it to favor a rich donor class:
1. Unicameral legislature, where representatives pass laws directly. Each state elects 3 statewide representatives: the three most-popular candidates in a statewide race where each person votes for one candidate (ranked preference voting would be even better but might not be necessary, and is not a solution by itself). Instead of each representative getting one vote in the chamber, they get N votes, where N is the number of people who voted for them. This means that in a close race, instead of the winner getting all the power, the power is split. Having 3 representatives trades off between leisure size and ensuring that two parties can't dominate together.
2. Any individual citizen can contact their local election office to switch or withdraw their vote at any time (maybe with a 3-day delay or something). Voting power of representatives can thus shift even without an election. They are limited to choosing one of the three elected representatives, or "none of the above." If the "none of the above" fraction exceeds 20% of eligible voters, a new election is triggered for that state. If turnout is less than 80%, a second election happens immediately, with results being final even at lower turnout until 6 months later (some better mechanism for turnout management might be needed).
3. All elections allow mail-in ballots, and in-person voting happens Sunday-Tuesday with the Monday being a mandatory holiday. (Yes, election integrity is not better in this system and that's a big weakness.)
4. Separate nationwide elections elect three positions for head-of-state: one with diplomatic/administrative powers, another with military powers, and a third with veto power. For each position, the top three candidates serve together, with only the first-place winner having actual power until vote switches or withdrawals change who that is. Once one of these heads loses their first-place status, they cannot get it again until another election, even if voters switch preferences back (to avoid dithering). An election for one of these positions is triggered when 20% have withdrawn their votes, or if all three people initially elected have been disqualified by losing their lead in the vote count.
5. Laws that involve spending money are packaged with specific taxes to pay for them, and may only be paid for by those specific revenues. Each tax may be opted into or out of by each taxpayer; where possible opting out of the tax also opts you out of the service. (I'm well aware of a lot of the drawbacks of this, but also feel like they'd not necessarily be worse than the drawbacks of our current system.) A small mandatory tax would cover election expenses.
6. I'm running out of attention, but similar multi-winner elections could elect panels of judges from which a subset is chosen randomly to preside in each case.
Now I'll point out once again that this system, in not directly confronting capitalism, racism, patriarchy, etc., is probably doomed to the same failures as our current system. But if you profess to want a "representative democracy" as opposed to something more libratory, I hope you'll at least advocate for something like this that actually includes meaningful representation as opposed to the current US system that's engineered to quash it.
Key questions: "Why should we have winner-take-all elections when winners-take-proportionately-to-votes is right there?" and "Why should elected officials get to ignore their constituents' approval except during elections, when vote-withdrawal or -switching is possible?"
2/2
#Democracy

Lawmakers push for ban on dangerous food packaging to protect health and the environment. #climatechange #climatesolutions #climate

Lawmakers push for ban on dangerous food packaging: 'We must curb anything that will negatively impact the health and environment of the citizens'
Following similar bans in Africa, one Nigerian state may soon add itself to the list of locations that no longer allow Styrofoam for food packaging.

Hilbert schemes of elliptic surfaces: group actions and derived categories
David Zhiyuan Bai
https://arxiv.org/abs/2508.09065 https://arxiv.org/pdf/2508.09…

Hilbert schemes of elliptic surfaces: group actions and derived categories
Let $X\to C$ be an elliptic surface with integral fibers and a section. The Hilbert scheme $X^{[n]}$ fibers over $C^{[n]}$. We construct a commutative group scheme over the entire base $C^{[n]}$ that embeds as an open subscheme of the Hilbert scheme, such that its action on itself extends to the entirety of $X^{[n]}$. We show that the action is $δ$-regular in the sense of Ngô. Using the derived McKay correspondence, we construct an exact autoequivalence of $D^b\operatorname{Coh}(X^{[n]})$ who…

😷 Viruses hidden within fungi could be secret drivers of deadly lung infections
#medicine

Viruses hidden within fungi could be secret drivers of deadly lung infections
Researchers have discovered that a virus living inside the fungus Aspergillus fumigatus significantly boosts the fungus's ability to survive stress and cause severe infections in mammals. Removing the virus made the fungus weaker and less virulent, while antiviral treatments improved survival outcomes. This finding reveals a hidden factor driving the deadliness of fungal infections and opens the door to potential new treatments that target the virus rather than the fungus itself.

Vector-Centric Machine Learning Systems: A Cross-Stack Approach
Wenqi Jiang
https://arxiv.org/abs/2508.08469 https://arxiv.org/pdf/2508.08469

Vector-Centric Machine Learning Systems: A Cross-Stack Approach
Today, two major trends are shaping the evolution of ML systems. First, modern AI systems are becoming increasingly complex, often integrating components beyond the model itself. A notable example is Retrieval-Augmented Generation (RAG), which incorporates not only multiple models but also vector databases, leading to heterogeneity in both system components and underlying hardware. Second, with the end of Moore's Law, achieving high system efficiency is no longer feasible without accounting for…

Support measures in fractal geometry
Goran Radunovi\'c (University of Zagreb), Steffen Winter (Karlsruhe Institute of Technology)
https://arxiv.org/abs/2508.08780 https://…

Support measures in fractal geometry
We introduce two novel families of geometric functionals-basic contents and support contents-for investigating the fractal properties of compact subsets in Euclidean space. These functionals are derived from the support measures arising in connection with the general Steiner formula due to Hug, Last, and Weil, and offer new tools for extracting geometric information beyond classical fractal dimensions. The basic contents are constructed from the support measures of the set itself, while the sup…

Old Galactic novae in the eROSITA All Sky Survey
Gloria Sala, Frank Haberl, Axel Schwope, Dus\'an Tub\'in-Arenas, Elif \c{S}afak, Chandreyee Maitra, Jochen Greiner
https://arxiv.org/abs/2509.08944

Old Galactic novae in the eROSITA All Sky Survey
Nova explosions occur on accreting white dwarfs. A thermonuclear runaway in the H-rich accreted envelope causes its ejection without destroying the white dwarf, and an increase in the luminosity by several magnitudes. Accretion is re-established some time after the explosion. The explosion of the nova itself is expected to affect the mass-transfer rate from the secondary and the accretion rate, but these effects have been little explored observationally. Most novae are observed only in outburst…

Genericity of Polyak-Lojasiewicz Inequalities for Entropic Mean-Field Neural ODEs
Samuel Daudin, Fran\c{c}ois Delarue
https://arxiv.org/abs/2507.08486 http…

Genericity of Polyak-Lojasiewicz Inequalities for Entropic Mean-Field Neural ODEs
We address the behavior of idealized deep residual neural networks (ResNets), modeled via an optimal control problem set over continuity (or adjoint transport) equations. The continuity equations describe the statistical evolution of the features in the asymptotic regime where the layers of the network form a continuum. The velocity field is expressed through the network activation function, which is itself viewed as a function of the statistical distribution of the network parameters (weights …

New superpower unlocked: procrastinate until a solution suggests itself over night. I think I'll change my middle name to “Calvin”?
#AcademicChatter

Iterative energy reduction Galerkin methods and variational adaptivity
Pascal Heid, Thomas P. Wihler
https://arxiv.org/abs/2509.09600 https://arxiv.org/pdf…

Iterative energy reduction Galerkin methods and variational adaptivity
Critical points of energy functionals, which are of broad interest, for instance, in physics and chemistry, in solid and quantum mechanics, in material science, or in general diffusion-reaction models arise as solutions to the associated Euler-Lagrange equations. While classical computational solution methods for such models typically focus solely on the underlying partial differential equations, we propose an approach that also incorporates the energy structure itself. Specifically, we examine…

Differentiable simulations for particle tracking in accelerators: analysis, benchmarking and optimization
Francisco Huhn, Francesco M. Velotti
https://arxiv.org/abs/2507.08476

Differentiable simulations for particle tracking in accelerators: analysis, benchmarking and optimization
Optimization of beamlines and lattices is a common problem in accelerator physics, which is usually solved with semi-analytical methods and numerical optimization routines. However, these are usually of the gradient-free or finite-differences type, whose computational cost grows quickly with the number of optimization parameters. On the other hand, the cost of gradient-based optimization can scale well with the number of parameters, but only if the computation of the gradient is itself efficien…

Putin can choose to send some drones now and then into Poland or the Baltic states and what can NATO do against this? It will not attack targets in Russia for sure. It can only defend itself or are there other options?
#nato #russia

Gravitational constant as a conserved charge in black hole thermodynamics
Wontae Kim, Mungon Nam
https://arxiv.org/abs/2509.08390 https://arxiv.org/pdf/250…

Gravitational constant as a conserved charge in black hole thermodynamics
Recent work has demonstrated that coupling constants in a given action can be promoted to the role of conserved charges. This is achieved by introducing pairs of field variables constructed from combinations of scalar and gauge fields. This framework naturally suggests that the gravitational constant itself can be interpreted as a conserved charge, arising from an associated gauge symmetry. In a modified four-dimensional Einstein-Hilbert action, we explicitly show that the gravitational constan…

Sources: Amazon weighs another multibillion-dollar investment in Anthropic, as it seeks to position itself ahead of Google, which has invested $3B in Anthropic (Financial Times)
https://www.ft.com/content/3e569928-dc0e-4baa-80c3-b51d24facb23

The Hiraga-Ichino-Ikeda conjecture on formal degrees for classical groups
Rapha\"el Beuzart-Plessis
https://arxiv.org/abs/2508.08470 https://arxiv.org…

The Hiraga-Ichino-Ikeda conjecture on formal degrees for classical groups
We prove a conjecture of Hiraga-Ichino-Ikeda relating formal degrees of square-integrable representations to adjoint gamma factors for symplectic and even orthogonal groups over characteristic zero non-Archimedean local fields. The proof is based on the twisted endoscopic characterization of the local Langlands correspondence for such groups and extends an approach already appearing in the original paper of Hiraga-Ichino-Ikeda itself inspired from earlier work of Shahidi. Namely, the argument c…

Enhancing Systematic Interoperability: Convergences and Mismatches between Web 3.0 and the EU Data Act
Linyi Xu, Zihao Li
https://arxiv.org/abs/2508.07356 https://

Enhancing Systematic Interoperability: Convergences and Mismatches between Web 3.0 and the EU Data Act
Interoperability is increasingly recognised as a foundational principle for fostering innovation, competition, and user autonomy in the evolving digital ecosystem. Existing research on interoperability predominantly focuses either on technological interoperability itself or on the legal regulations concerning interoperability, with insufficient exploration of their interdisciplinary intersection. This paper compares the technological interoperability in Web 3.0 with the theoretical framework of…

Kanbara - Evening Snow
Utagawa Hiroshige, about 1833-5
#SilentSunday

Weighted, Multiphase, Volume-Preserving Mean Curvature Flow as Limit of the MBO Scheme on Manifolds
Fabius Kr\"amer
https://arxiv.org/abs/2508.09064 https://

Weighted, Multiphase, Volume-Preserving Mean Curvature Flow as Limit of the MBO Scheme on Manifolds
The famous thresholding scheme by Merriman, Bence, and Osher (Motion of multiple junctions: A level set approach. Journal of Computational Physics 112.2 (1994): 334-363.) proved itself as a very efficient time discretization of mean curvature flow. The present paper studies a multiphase, volume constrained version on a weighted manifold that naturally arises in the context of data science. The main result of this work proves convergence to multiphase, weighted, volume-preserving mean curvature …

Path to Intelligence: Measuring Similarity between Human Brain and Large Language Model Beyond Language Task
Doai Ngo, Mingxuan Sun, Zhengji Zhang, Ashwin G Ramayya, Mark Schnitzer, Zhe Zhao
https://arxiv.org/abs/2509.08831

Path to Intelligence: Measuring Similarity between Human Brain and Large Language Model Beyond Language Task
Large language models (LLMs) have demonstrated human-like abilities in language-based tasks. While language is a defining feature of human intelligence, it emerges from more fundamental neurophysical processes rather than constituting the basis of intelligence itself. In this work, we study the similarity between LLM internal states and human brain activity in a sensory-motor task rooted in anticipatory and visuospatial behavior. These abilities are essential for cognitive performance that cons…

My kid made this for me at camp
He says "this is what a real #wug looks like, dad."
#linguistics

Non-classifiability of mixing zero-entropy diffeomorphisms up to isomorphism
Marlies Gerber, Philipp Kunde
https://arxiv.org/abs/2509.09003 https://arxiv.o…

Non-classifiability of mixing zero-entropy diffeomorphisms up to isomorphism
We show that the problem of classifying, up to isomorphism, the collection of zero-entropy mixing automorphisms of a standard non-atomic probability space, is intractible. More precisely, the collection of isomorphic pairs of automorphisms in this class is not Borel, when considered as a subset of the Cartesian product of the collection of measure-preserving automorphisms with itself. This remains true if we restrict to zero-entropy mixing automorphisms that are also $C^{\infty}$ diffeomorphism…

Said goodbye to two people in my lab today: my first employee & (completed) PhD student our admin assistant 😢 all the emotions... 😭 🤩
That's another side of academic mobility - every few years a lab has to completely reinvent itself... that's tough #academicChatter

Shift Before You Learn: Enabling Low-Rank Representations in Reinforcement Learning
Bastien Dubail, Stefan Stojanovic, Alexandre Prouti\`ere
https://arxiv.org/abs/2509.05193 htt…

Shift Before You Learn: Enabling Low-Rank Representations in Reinforcement Learning
Low-rank structure is a common implicit assumption in many modern reinforcement learning (RL) algorithms. For instance, reward-free and goal-conditioned RL methods often presume that the successor measure admits a low-rank representation. In this work, we challenge this assumption by first remarking that the successor measure itself is not low-rank. Instead, we demonstrate that a low-rank structure naturally emerges in the shifted successor measure, which captures the system dynamics after bypa…

Procedural Mixture Sets
Hendrik Rommeswinkel
https://arxiv.org/abs/2508.07588 https://arxiv.org/pdf/2508.07588

Procedural Mixture Sets
The paper characterizes the Shannon (1948) and Tsallis (1988) entropies in a standard framework of decision theory, mixture sets. Procedural mixture sets are introduced as a variant of mixture sets in which it is not necessarily true that a mixture of two identical elements yields the same element. This allows the process of mixing itself to have an intrinsic value. The paper proves the surprising result that simply imposing the standard axioms of von Neumann-Morgenstern on preferences on a pro…

History doesn’t repeat itself, but it often rhymes. IG Farben initially wasn’t keen on working with the Nazis, but it just made business sense to adapt to the new political environment ¯\_(ツ)_/¯
https://daringfireball.net/2025/08/gold_frankincense_and_silicon

Iterative model of self-referential quantum evolution
Andrei Galiautdinov
https://arxiv.org/abs/2509.07940 https://arxiv.org/pdf/2509.07940

Iterative model of self-referential quantum evolution
We introduce and analyze a toy model of a quantum physical device capable of internal, self-referential deliberation, realized through iterative, branch-dependent unitary evolution tracked by control, memory, and policy registers. The key idea is to represent ``deliberation'' as a coherent branching process, in which alternative candidate evolutions are maintained in superposition across registers, rather than by placing the system itself under a literal superposition of Hamiltonians. We provid…

Exact solution of the DeWitt-Brehme-Hobbs equation in copropagating electromagetic and gravitational waves
Giulio Audagnotto, Antonino Di Piazza
https://arxiv.org/abs/2509.07052

Exact solution of the DeWitt-Brehme-Hobbs equation in copropagating electromagetic and gravitational waves
An accelerated charge interacts with itself through the electromagnetic field that it sources, a phenomenon known as electromagnetic radiation reaction. The DeWitt-Brehme-Hobbs (DWBH) equation describes the motion of a charged mass in the presence of combined electromagnetic and gravitational fields, taking into account electromagnetic radiation-reaction effects. Here, we find the first exact analytical solution of the DWBH equation in the case of a charged mass in the presence of copropagating…

CP violation in decays into states with neutral kaons
Yuval Grossman, Paolo Leo, Alberto Martini, Guglielmo Papiri, Armine Rostomyan
https://arxiv.org/abs/2509.07071 https://

CP violation in decays into states with neutral kaons
CP violation in the kaon system can manifest itself in decays to final states containing neutral kaons. The effect is governed by an efficiency function that reflects the specific experimental setup. We demonstrate that this efficiency function factorizes into two components: the kaon energy spectrum and a universal detector-dependent factor. We show that matter effects on kaon oscillations can have a significant effect on CP asymmetries. We provide estimates of the theoretical prediction for s…

Fox News isn't banned in Canada, despite viral posts claiming otherwise – but it could be | Fact Checking | #thecanadianpressnews
so there's hope. they cite Fox has 66% market share for US cable news, but what is the market share of cable news itself? Nielsen's says streaming share for "TV" is now more than the combined share of cable and broadcast.
https://www.thecanadianpressnews.ca/fact_checking/fox-news-isnt-banned-in-canada-despite-viral-posts-claiming-otherwise-but-it-could-be/article_3566ffe6-45a5-54bf-981a-51f72ba0eada.html

Ravens snatch defeat from the jaws of victory with a series of big mistakes in big spots against Bills

https://www.cbssports.com/nfl/news/ravens-

Do (Or Don't!) Look Down... into the beautiful valley (Rappenalptal) 😍
#FootpathFriday #LandscapePhotography #Video

Why’d they call it “agentic AI” when Russian roulette was right there?
(Ah, because Russian roulette doesn’t destroy our habitat, drink all our water, and doom our species. I get it now, my bad.) https://front-end.social/@ariel/114675226611700916

Ariel Salminen (@ariel@front-end.social)
Attached: 1 image “Cursor […] tried to delete some old files, didn’t work at the first time and it decided to end up deleting everything on my computer, including itself.” 😶‍🌫️ https://forum.cursor.com/t/cursor-yolo-deleted-everything-in-my-computer/103131

Hybrid Diffusion Policies with Projective Geometric Algebra for Efficient Robot Manipulation Learning
Xiatao Sun, Yuxuan Wang, Shuo Yang, Yinxing Chen, Daniel Rakita
https://arxiv.org/abs/2507.05695

Hybrid Diffusion Policies with Projective Geometric Algebra for Efficient Robot Manipulation Learning
Diffusion policies have become increasingly popular in robot learning due to their reliable convergence in motion generation tasks. At a high level, these policies learn to transform noisy action trajectories into effective ones, conditioned on observations. However, each time such a model is trained in a robotics context, the network must relearn fundamental spatial representations and operations, such as translations and rotations, from scratch in order to ground itself and operate effectivel…

An adjunction inequality for Real embedded surfaces
David Baraglia
https://arxiv.org/abs/2507.05667 https://arxiv.org/pdf/2507.05667

An adjunction inequality for Real embedded surfaces
A Real structure on a $4$-manifold $X$ is an orientation preserving smooth involution $σ$. We say that an embedded surface $Σ\subset X$ is Real if $σ$ maps $Σ$ to itself orientation reversingly. We prove that a cohomology class $u \in H^2(X ; \mathbb{Z})$ can be represented by a Real embedded surface if and only if $u$ can be lifted to a class in equivariant cohomology $H^2_{\mathbb{Z}_2}(X ; \mathbb{Z}_-)$. We prove that if the Real Seiberg--Witten invariants of $X$ are non-zero then the g…

And another question: Say I want to watch, comment and share videos from #Peertube (and nothing else like microblogging). Where should I create an account, which platform/software has @… in mind? It's not Peertube itself, right? Because that's for publishing…

Hmmmm… here is a problem I did not anticipate.
Every time I empty the main pond hole of water, (the actual hole under the liner) water returns within an hour or two. I’ve done it 4 times now, and it keeps filling back up with water.
Obviously there is water underground infiltrating into the pond hole, and/or the water table itself is above the bottom of the hole. It is not coming from either of the other holes because they both have the same amount of water in them as they did this morning.
I have “watered” the blueberry patch and hazelnut tree a lot with the water that I have been cleaning the filter with… and we also had lots of water flying around outside the liners yesterday as I tested the pump. So it is quite possible that the ground around the pond is simply well saturated.
I think I am going to have to just keep removing the water (and putting it into the sewer) until it does not refill. We have a week of hot weather coming. Surely that will be enough time for everything to dry out completely.
Otherwise I might run into some issues if the rains return before I can anchor down the pond liner with gravel and get the plumbing in!
How is time already running short!?
Never underestimate the ability of water to find a place where it is not wanted. 😆
#poolpond #backyardProject #diy

Distribution Dependent Birth-Death Processes: $\mathbb{W}_p$-Estimate, Ergodicity and Propagation of Chaos
Feng-Yu Wang, Yi Zhao
https://arxiv.org/abs/2508.06198 https://…

Distribution Dependent Birth-Death Processes: $\mathbb{W}_p$-Estimate, Ergodicity and Propagation of Chaos
For a class of time inhomogenous distribution dependent birth-death processes, we derive the well-posedness, $\mathbb{W}_p$-estimate, exponential ergodicity, and uniform in time propagation of chaos. These extend the corresponding results derived for distribution dependent SDEs and mean field particle systems. As preparation, a criterion on the well-posedness of inhomogenous jump process is presented in the end of the paper, which should be interesting by itself.

On the Detection of Exorings in Reflected Light with JWST NIRCam
Rachel Bowens-Rubin, Mary Anne Limbach, Sam Hopper, Klaus Subbotina Stephenson, Matson Garza, Leigh N. Fletcher, Matthew Hedman
https://arxiv.org/abs/2509.07118

On the Detection of Exorings in Reflected Light with JWST NIRCam
When directly imaging a cold giant exoplanet hosting a ring system, the reflected light from the rings can outshine the planet's thermal emission and reflected-light in the near-infrared. Consequently, an exoring may be detectable at a significantly lower contrasts than is required to image the exoplanet itself. Here we investigate the detectability of exorings in near-infrared reflected light using NIRCam coronagraphy PanCAKE simulations of two nearby mature stars, Proxima Centauri and Tau Cet…

Composition laws of binary quadratic forms and isolations of quadratic forms
Jangwon Ju, Daejun Kim, Kyoungmin Kim, Mingyu Kim, Byeong-Kweon Oh
https://arxiv.org/abs/2508.07916 …

Composition laws of binary quadratic forms and isolations of quadratic forms
A positive definite and integral quadratic form $f$ is called irrecoverable if there is a quadratic form $F$ such that it represents all proper subforms of $f$, whereas it does not represent $f$ itself. In this case, $F$ is called an isolation of $f$. In this article, we prove that there does not exist a binary isolation of any unary quadratic form. We also prove that there does not exist a ternary isolation of any binary quadratic form. Furthermore, if the form class group of a primitive binar…

Dienstmededelung:
De pruimentaart staat in de oven
Ik herhaal:
De pruimentaart staat in de oven!
https://cooking.nytimes.com/recipes/3783-original-plum-torte?unlocked_article_code=1.jk8.7rf0.mSIJOO7HJ6Aw

Original Plum Torte Recipe (Gift Recipe)
The Times published Marian Burros’s recipe for Plum Torte every September from 1983 until 1989, when the editors determined that enough was enough. The recipe was to be printed for the last time that year. “To counter anticipated protests,” Ms. Burros wrote a few years later, “the recipe was printed in larger type than usual with a broken-line border around it to encourage clipping.” It didn’t help. The paper was flooded with angry letters. “The appearance of the recipe, like the…

AI is flooding libraries with generated content just as budgets and staff are at their most precarious. This Thursday at 10am EDT my ASIS&T webinar asks if we need to ban it, label it, absorb it—or rethink the library itself.
https://www.asist.org/meetings-events/webi

I run a gloriously dysfunctional website over at Codeberg, where the HTML cries itself to sleep every night:
You can check it out here: #WebsiteDevelopment…

Entropy production in non-reciprocal polar active mixtures
Kim L. Kreienkamp, Sabine H. L. Klapp
https://arxiv.org/abs/2508.05209 https://arxiv.org/pdf/250…

Entropy production in non-reciprocal polar active mixtures
The out-of-equilibrium character of active systems is often twofold, arising from both the activity itself and from non-reciprocal couplings between constituents. A well-established measure to quantify the system's distance from equilibrium is the informatic entropy production rate. Here, we ask the question whether and how the informatic entropy production rate reflects collective behaviors and transitions in an active mixture with non-reciprocal polar couplings. In such systems, non-reciproca…

as a local resident, the "fear not" in the headline is bullshit. the diner will no longer be there & it'll be just another bland ass corner. https://greenpointers.com/2025/08/06/wythe-avenue-diner-site-officially-sells-for-12-5-mill…

Wythe Avenue Diner Site Officially Sells for $12.5 Million - Greenpointers
Fear not—the diner itself is getting a new home.

Today in "Ironic Porn Purchase Leads To Unironic Ejaculation"
https://kotaku.com/black-mirror-memecoin-crypto-web3-2000624006

Reality Eats Itself As Black Mirror Releases A Damn Memecoin
The owners of the satirical Netflix series don't quite seem to have picked up on its messages

Let's not fool ourselves, no country in Europe, except Ukraine, is able to defend itself (a bit) effectively against a massive drone assault, think about that... An F-35 is great but quite useless when you face hundreds of small drones...
#EU #europe

Hilbert manifold structures on path spaces
Urs Frauenfelder, Joa Weber
https://arxiv.org/abs/2507.03782 https://arxiv.org/pdf/2507.03…

Hilbert manifold structures on path spaces
In Floer theory one has to deal with two-level manifolds like for instance the space of $W^{2,2}$ loops and the space of $W^{1,2}$ loops. Gradient flow lines in Floer theory are then trajectories in a two-level manifold. Inspired by our endeavor to find a general setup to construct Floer homology we therefore address in this paper the question if the space of paths on a two-level manifold has itself the structure of a Hilbert manifold. In view of the two topologies on a two-level manifold it is…

The new TV came in and it has been beat to absolute hell. The TV itself is now slightly out-of-square, the front bezel was shattered (the top bit is kinda just stuck there as is the left-hand side), and the outer shell is pretty bent.
However, the tube is perfect and the TV is 100% functional (composite and S-video) which is absolute insanity. I'm not sure how I want to proceed on this one.

'NeuroPriest' is a roguelite that's played as a Notepad plugin on 64 bit Windows (tested on Windows 10 and 11).
Grab it here to try it out (there's install instructions here, too - to add the font, theme, and plugin itself): https://github.com/thelowsunoverthemoon/Neur…

Position: The Pitfalls of Over-Alignment: Overly Caution Health-Related Responses From LLMs are Unethical and Dangerous
Wenqi Marshall Guo, Yiyang Du, Heidi J. S. Tworek, Shan Du
https://arxiv.org/abs/2509.08833

Position: The Pitfalls of Over-Alignment: Overly Caution Health-Related Responses From LLMs are Unethical and Dangerous
Large Language Models (LLMs) are usually aligned with "human values/preferences" to prevent harmful output. Discussions around the alignment of Large Language Models (LLMs) generally focus on preventing harmful outputs. However, in this paper, we argue that in health-related queries, over-alignment-leading to overly cautious responses-can itself be harmful, especially for people with anxiety and obsessive-compulsive disorder (OCD). This is not only unethical but also dangerous to the user, both…

Accept-Reject Lasso
Yanxin Liu, Yunqi Zhang
https://arxiv.org/abs/2508.04646 https://arxiv.org/pdf/2508.04646

Accept-Reject Lasso
The Lasso method is known to exhibit instability in the presence of highly correlated features, often leading to an arbitrary selection of predictors. This issue manifests itself in two primary error types: the erroneous omission of features that lack a true substitutable relationship (falsely redundant features) and the inclusion of features with a true substitutable relationship (truly redundant features). Although most existing methods address only one of these challenges, we introduce the A…

The media focus on this one criticism is insane, just massive focus on ensuring everybody is quoted as being against Bob's chant.
The manufacturing of consent in plain view. No support of Bob allowed to be quoted, only condemnation. No focus at all on the horrors committed by the army itself, just condemnation and contrition from all corners.
And all so much louder than the coverage of death and hunger and destruction and genocide being committed by that army.
Our media environment is so focused and in lock-step, even though it's in theory free. Yet not a single newspaper saying, you know, the Vylan character has a point! Maybe we should disband a criminal army!
Got confused about the date in the show here, but the reading's about right. The bandwagon rolls on because it's a victory for everyone. The media gets to condemn someone, and they don't have to condemn Israel.
https://wordcloudtarot.com/readings/2025-07-01-gazaandglastonbury/

Mastercard Claims NSFW Game Bans Aren’t From Them, Valve Explains How Mastercard Launders Its Control
https://www.techdirt.com/2025/08/05/mastercard-claims-nsfw-game-bans-arent-from-them-valve-explains-ho…

Mastercard Claims NSFW Game Bans Aren’t From Them, Valve Explains How Mastercard Launders Its Control
This whole attempted censorship of adult games on gaming platforms is becoming a thing. Collective Shout—a group out of Australia that wraps itself in a feminist flag while behaving like the religi…

Learning Barycenters from Signature Matrices
Carlos Am\'endola, Leonard Schmitz
https://arxiv.org/abs/2509.07815 https://arxiv.org/pdf/2509.07815

Learning Barycenters from Signature Matrices
The expected signature of a family of paths need not be a signature of a path itself. Motivated by this, we consider the notion of a Lie group barycenter introduced by Buser and Karcher to propose a barycenter on path signatures. We show that every element of the free nilpotent Lie group is a barycenter of a group sample, where all but one sample element can be fixed arbitrarily. In the case of piecewise linear paths, we study the problem of recovering an underlying path corresponding to the ba…

Perfect Edge Domination in $P_6$-free Graphs and in Graphs Without Efficient Edge Dominating Sets
Luciano N. Grippo, Min Chih Lin, Camila Vera
https://arxiv.org/abs/2509.04598 h…

Perfect Edge Domination in $P_6$-free Graphs and in Graphs Without Efficient Edge Dominating Sets
An edge of a graph dominates itself along with any edge that shares an endpoint with it. An efficient edge dominating set (also called a dominating induced matching, DIM) is a subset of edges such that each edge of the graph is dominated by exactly one edge in the subset. A perfect edge dominating set is a subset of edges in which every edge outside the subset is dominated by exactly one edge within it. In this article, we establish the NP-completeness of deciding whether a graph that does not …

Gluon amplitudes in first quantization
Fiorenzo Bastianelli, Roberto Bonezzi, Olindo Corradini, Filippo Fecit
https://arxiv.org/abs/2508.05486 https://arxi…

Gluon amplitudes in first quantization
We compute tree-level gluon amplitudes as worldline correlators of vertex operators in a bosonic spinning particle model. In this framework, the particle's position degrees of freedom are extended by complex bosonic variables that encode its spin. In the free theory, the model exhibits a first-class constraint algebra whose gauging ensures the unitarity of the quantum theory. This algebra is a contraction of the $sl(2,\mathbb{R})$ algebra, which is by itself a subalgebra of the Virasoro algebra…

Starve-attract-shoot-kill-repeat.
Western governments: "Israel has the right to defend itself."
https://www.pbs.org/newshour/world/officials-say-73-palestinians-killed-in-gaza-while-…

Officials say 73 Palestinians killed in Gaza while seeking aid as Israel widens evacuation orders
At least 73 Palestinians were killed while trying to reach aid at locations across Gaza on Sunday, the territory's Health Ministry said, in one of the deadliest days yet for aid-seekers in over 21 months of war.

Wave Mechanics and C-equivalence
Satyanad Kichenassamy (LMR)
https://arxiv.org/abs/2507.07069 https://arxiv.org/pdf/2507.07069…

Wave Mechanics and C-equivalence
We establish that de Broglie's wave, as it is introduced in his Thesis, is not a wave on a given space, but on the contrary itself determines a system in which Special Relativity is locally valid. This local system is a physical object, that defines its own units of length and time. C-equivalence provides a natural framework both for its mathematical description and its physical interpretation.

just split seconds apart, almost the same yet completely different images, just because a leaf or three moved in the wind
#bloomScrolling #photography #cornflower

🗷 Gerrymandering erodes confidence in democracy
#politics

Gerrymandering erodes confidence in democracy
When politicians redraw congressional district maps to favor their party, they may secure short-term victories. But those wins can come at a steep price—a loss of public faith in elections and, ultimately, in democracy itself.

And the prize for the most painful #acronym in an astronomy paper's title in the past few weeks goes to ... ASTRONAUT = A databaSe of millimeTeR ObservatioNs of Asteroids Using acT (which itself stands for the Atacama Cosmology Telescope the regular acronym of which is ACT): https://arxiv.org/abs/2508.18300.

An older writeup, but interesting nevertheless.
In-kernel windowing makes sense in certain environments.
https://github.com/8l/fbui
The problem then is though that for general purpose OSes (where a port is *not* a modified copy, but additional runtime evaluation!) this makes the kernel itself comp…

Testing for correlation between network structure and high-dimensional node covariates
Alexander Fuchs-Kreiss, Keith Levin
https://arxiv.org/abs/2509.03772 https://

Testing for correlation between network structure and high-dimensional node covariates
In many application domains, networks are observed with node-level features. In such settings, a common problem is to assess whether or not nodal covariates are correlated with the network structure itself. Here, we present four novel methods for addressing this problem. Two of these are based on a linear model relating node-level covariates to latent node-level variables that drive network structure. The other two are based on applying canonical correlation analysis to the node features and ne…

even more famous!
https://english.elpais.com/people/2024-02-10/that-ferrari-isnt-going-to-pay-for-itself-the-controversial-rise-of-jeremy-fragrance-the-perfume-influencer.html

A US jury finds Tesla partially liable for Autopilot's role in a fatal 2019 crash in Florida, and orders the company to pay $200M in punitive damages (Washington Post)
https://www.washingtonpost.c…

Tesla found partially liable for fatal 2019 crash, hit with $243 million in damages
The outcome is a stunning rebuke for Tesla, which for years has fought to absolve itself of responsibility when its technology is involved in a crash.

NATO caught with its 'pants down' if China, Russia try two-front war, experts say: https://benborges.xyz/2025/07/07/nato-caught-with-its-pants.html

Energy Estimates for Fractional Evolution Equations
Paulo M. Carvalho-Neto, Cicero L. Frota, Juan C. Oyola Ballesteros, Pedro G. P. Torelli
https://arxiv.org/abs/2508.05780 http…

Energy Estimates for Fractional Evolution Equations
This work presents a more broadly applicable version of an energy inequality for weak solutions of evolution equations involving fractional time derivatives. Unlike the classical identity that relates the time derivative of the squared norm to the inner product of the derivative and the function itself, its fractional analogue typically requires a regularity condition that is difficult to verify in practice. We revisit this inequality in the setting of square integrable functions over an open d…

Iterative Sparse Asymptotic Minimum Variance Based Channel Estimation in Fluid Antenna System
Zhen Chen, Jianqing Li, Xiu Yin Zhang, Kai-Kit Wong, Chan-Byoung Chae, Yangyang Zhang
https://arxiv.org/abs/2507.05625

Iterative Sparse Asymptotic Minimum Variance Based Channel Estimation in Fluid Antenna System
With fluid antenna system (FAS) gradually establishing itself as a possible enabling technology for next generation wireless communications, channel estimation for FAS has become a pressing issue. Existing methodologies however face limitations in noise suppression. To overcome this, in this paper, we propose a maximum likelihood (ML)-based channel estimation approach tailored for FAS systems, designed to mitigate noise interference and enhance estimation accuracy. By capitalizing on the inhere…

The Role of Magnetospheric Rebound in Breaking Resonant Chains of Super-Earths and Mini-Neptunes
Mengrui Pan, Andre Izidoro, Sho Shibata
https://arxiv.org/abs/2509.07866 https:/…

The Role of Magnetospheric Rebound in Breaking Resonant Chains of Super-Earths and Mini-Neptunes
Stellar magnetic fields are thought to truncate the inner regions of protoplanetary disks around T Tauri stars, creating a magnetospheric cavity near the star. As the disk evolves and disperses, the truncation radius is expected to move outward as the balance between magnetic and viscous forces shifts. Planets migrating inward can become trapped near the inner edge, but as the edge itself moves outward, the evolving disk torques can drive planets to migrate outward as well. We employ N-body sim…

A note on Global Positioning System (GPS) and Euclidean distance matrices
A. Y. Alfakih
https://arxiv.org/abs/2507.04358 https://arxi…

A note on Global Positioning System (GPS) and Euclidean distance matrices
Let $D$ be an $n \times n$ Euclidean distance matrix (EDM) with embedding dimension $r$; and let $d \in R^n$ be a given vector. In this note, we consider the problem of finding a vector $y \in R^n$, that is closest to d in Euclidean norm, such that the augmented matrix $\left[ \begin{array}{cc} 0 & y^T \\ y & D \end{array}\right]$ is itself an EDM of embedding dimension $r$. This problem is motivated by applications in Global Positioning System (GPS). We present a fault detection criterion and …

Surpassing the wave-particle duality relation via feed-forward of phase information
Elisabeth Meusert, Uwe Schilling, Marc-Oliver Pleinert, Joachim von Zanthier
https://arxiv.org/abs/2509.04989

Surpassing the wave-particle duality relation via feed-forward of phase information
Complementarity constitutes a central aspect of quantum theory. It manifests itself, for example, in a two-way interferometer, where the simultaneous observation of an interference pattern and the acquisition of which-way information are limited by an inequality known as the duality relation. Here, we investigate which-way information in a double-slit interferometer and show that it can be correlated to the phase of the quantum object at the detection screen, leading to a phase-dependent which-…

Kahan's Automatic Step-Size Control for Unconstrained Optimization
Yifeng Meng, Chungen Shen, Linuo Xue, Lei-Hong Zhang
https://arxiv.org/abs/2508.06002 https://

Kahan's Automatic Step-Size Control for Unconstrained Optimization
The Barzilai and Borwein (BB) gradient method is one of the most widely-used line-search gradient methods. It computes the step-size for the current iterate by using the information carried in the previous iteration. Recently, William Kahan [Kahan, Automatic Step-Size Control for Minimization Iterations, Technical report, University of California, Berkeley CA, USA, 2019] proposed new Gradient Descent (KGD) step-size strategies which iterate the step-size itself by effectively utilizing the info…

from my link log —
CSS font-size-adjust is useful.
https://matklad.github.io/2025/07/16/font-size-adjust.html
saved 2025-07-23

Could veterans change Ukraine’s politics forever?: https://benborges.xyz/2025/07/07/could-veterans-change-ukraines-politics.html

But doesn’t israel have the right to defend itself against the people it is starving?
https://www.theguardian.com/world/2025/jun/17/dozens-killed-in-gaza-waiting-for-food-trucks-says-health-ministry
…

Governing AI R&D: A Legal Framework for Constraining Dangerous AI
Alex Mark, Aaron Scher
https://arxiv.org/abs/2509.05361 https://arxiv.org/pdf/2509.05…

Governing AI R&D: A Legal Framework for Constraining Dangerous AI
As AI advances, governing its development may become paramount to public safety. Lawmakers may seek to restrict the development and release of AI models or of AI research itself. These governance actions could trigger legal challenges that invalidate the actions, so lawmakers should consider these challenges ahead of time. We investigate three classes of potential litigation risk for AI regulation in the U.S.: the First Amendment, administrative law, and the Fourteenth Amendment. We discuss exi…

Connectedness of independence attractors of graphs with independence number three
Moumita Manna, Tarakanta Nayak
https://arxiv.org/abs/2508.04083 https://a…

Connectedness of independence attractors of graphs with independence number three
An independent set in a simple graph $G$ is a set of pairwise non-adjacent vertices in $G$. The independence polynomial of $G$, denoted by $I_G$ is defined as $1 + a_1 z + a_2 z^2+\cdots+a_d z^{d}$, where $a_i$ denotes the number of independent sets with cardinality $i$ and $d$ is the cardinality of a largest independent set in $G$. This $d$ is known as the independence number of $G$. Let $G^m$ denote the $m$-times lexicographic product of $G$ with itself. The independence attractor of $G$, den…

Resurgence of CO in a warm bubble around accreting protoplanets and its observability
O. Chrenko, S. Casassus, R. O. Chametla
https://arxiv.org/abs/2507.03370

Resurgence of CO in a warm bubble around accreting protoplanets and its observability
The cold outer regions of protoplanetary disks are expected to contain a midplane-centered layer in which gas-phase CO molecules freeze-out and their overall abundance is low. The layer then manifests itself as a void in the channel maps of CO rotational emission lines. We explore whether the frozen-out layer can expose the circumplanetary environment of embedded accreting protoplanets to observations. To this end, we performed 3D radiative gas-dust hydrodynamic simulations, directly linking op…

The Marin Community Foundation sold 13.4M Figma shares for $440M in the IPO; source: the foundation had received the shares from Figma co-founder Evan Wallace (Allie Garfinkle/Fortune)
https://fortune.com/2025/08/02/figma-ipo-surpris…

Figma IPO’s surprise winner is a charity with 13 million shares—and a famous backstory that sparked a bitter feud over an oil fortune decades ago
The Marin Community Foundation netted $440 million as the IPO's largest selling shareholder. The philanthropic organization is itself the product of a previous generation of big business—and a famous legal fight for control of the money.

A dimensional mass transference principle from balls to open sets and applications to dynamical Diophantine approximation
Yubin He
https://arxiv.org/abs/2508.03359 https://

A dimensional mass transference principle from balls to open sets and applications to dynamical Diophantine approximation
The mass transference principle of Beresnevich and Velani is a powerful mechanism for determining the Hausdorff dimension/measure of $\limsup$ sets that arise naturally in Diophantine approximation. However, in the setting of dynamical Diophantine approximation, this principle often fails to apply effectively, as the radii of the balls defining the dynamical $\limsup$ sets generally depend on the orbit of the point $x$ itself. In this paper, we develop a dimensional mass transference principl…

Quantum Leap in Finance: Economic Advantages, Security, and Post-Quantum Readiness
Gerhard Hellstern, Esra Yeniaras
https://arxiv.org/abs/2508.21548 https://

Quantum Leap in Finance: Economic Advantages, Security, and Post-Quantum Readiness
This paper provides an in-depth review of the evolving role of quantum computing in the financial sector, emphasizing both its computational potential and cybersecurity implications. Distinguishing itself from existing surveys, this work integrates classical quantum computing applications - such as portfolio optimization, risk analysis, derivative pricing, and Monte Carlo simulations with a thorough examination of blockchain technologies and post-quantum cryptography (PQC), which are crucial fo…