Tootfinder

Sources: an internal OpenAI paper on AI stages is affecting Microsoft talks by complicating OpenAI's ability to declare AGI and block Microsoft from its tech (Kylie Robison/Wired)
https://www.wired.com/story/openai-five-levels-agi-paper-microso…

OpenAI’s Unreleased AGI Paper Could Complicate Microsoft Negotiations
The partnership between OpenAI and Microsoft in many ways hinges on the definition of artificial general intelligence, creating a tension that has spilled over into OpenAI research that has not been made public.

Once AI takes over the billionaire elite will try and get the definition of what a human is redefined.

Extended $\mathcal{O}$-operators, Novikov Yang-Baxter equations and post-Novikov algebras
Jianfeng Yu, Yanyong Hong
https://arxiv.org/abs/2505.20735 https:…

Extended $\mathcal{O}$-operators, Novikov Yang-Baxter equations and post-Novikov algebras
In this paper, we introduce the definition of extended $\mathcal{O}$-operators on a Novikov algebra $(A,\circ)$ associated to an $A$-bimodule Novikov algebra which is a generalization of the definition of $\mathcal{O}$-operators and show that there are new Novikov algebra structures on the $A$-bimodule Novikov algebra obtained from extended $\mathcal{O}$-operators. We also introduce the definition of post-Novikov algebras and show that there is a close relationship between post-Novikov algebras…

Of course, my definition of binging is watching two episodes in a row and waking up drooling in front of the TV. So when I am saying Poker Face is binge-worthy, it means I am into my third episode for today. Time of the Monkey was better than Game of Thrones.

Ah, frequency illusion bias/Baader-Meinhof phenomenon! I have been learning about the nation-state Treaty of Westphalia stuff.
I'm finding it a bit odd that I'm so late to learn about this ... is it less emphasised in Australia? Why is it emphasised in the US?
At my current stage of learning, Australia's self-definition feels heavily 'state', with any discussion of 'nation' often being tied to racism.
More to learn I guess!
#NationState #TreatyOfWestphalia

This https://arxiv.org/abs/2502.20991 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLO_…

Domains, Information Frames, Rough Sets: An Equivalence of Categories
A generalization of Scott's information systems~\cite{sco82} is presented that captures exactly all continuous domains. The global consistency predicate in Scott's definition is relativized. Now, for every atomic statement, there is a consistency predicate that states which finite sets of statements express information that is consistent with the given statement. The category of information frames is shown to be equivalent to the category of domains. Moreover, the relationship with CF-approxima…

soc_net_comms: Networks with group metadata
Snapshots of LiveJournal, Friendster, Orkut, and YouTube online social networks, as well as DBLP and Amazon. Node metadata represents a post hoc definition of a 'community' that a node belongs to, derived from topical labels of the node or interest-based 'groups' that a node links to.
This network has 317080 nodes and 1049866 edges.
Tags: Online, Social, Collaboration, Informational, Relatedness, Unweighted, Metada…

A Framework for Quantum Advantage
Olivia Lanes, Mourad Beji, Antonio D. Corcoles, Constantin Dalyac, Jay M. Gambetta, Loic Henriet, Ali Javadi-Abhari, Abhinav Kandala, Antonio Mezzacapo, Christopher Porter, Sarah Sheldon, John Watrous, Christa Zoufal, Alexandre Dauphin, Borja Peropadre
https://arxiv.org/abs/2506.20658

A Framework for Quantum Advantage
As quantum computing approaches the threshold where certain tasks demonstrably outpace their classical machines, the need for a precise, clear, consensus-driven definition of quantum advantage becomes essential. Rapid progress in the field has blurred this term across companies, architectures, and application domains. Here, we aim to articulate an operational definition for quantum advantage that is both platform-agnostic and empirically verifiable. Building on this framework, we highlight the …

Holography with Null Boundaries
Christian Ferko, Savdeep Sethi
https://arxiv.org/abs/2506.20765 https://arxiv.org/pdf/2506.20765

Holography with Null Boundaries
One of the key issues in holography is going beyond $\mathrm{AdS}$ and defining quantum gravity in spacetimes with a null boundary. Recent examples of this type involve linear dilaton asymptotics and are related to the $T \overline{T}$ deformation. We present a holographic correspondence derived from string theory, which is an example of a kind of celestial holography. The holographic definition is a spacetime non-commutative open string theory supported on D1-D5 branes together with fundamenta…

Machine Learning with Privacy for Protected Attributes
Saeed Mahloujifar, Chuan Guo, G. Edward Suh, Kamalika Chaudhuri
https://arxiv.org/abs/2506.19836 htt…

Machine Learning with Privacy for Protected Attributes
Differential privacy (DP) has become the standard for private data analysis. Certain machine learning applications only require privacy protection for specific protected attributes. Using naive variants of differential privacy in such use cases can result in unnecessary degradation of utility. In this work, we refine the definition of DP to create a more general and flexible framework that we call feature differential privacy (FDP). Our definition is simulation-based and allows for both additio…

According to Republicans, ICE just murdered a baby.
But of course it's a Guatemalan baby, so Republicans don't care.
Anyone still supporting this party is by definition a despicable racist worthless piece of shit.
No, you're not an exception. You're either opposed to the GOP fascists or you're a despicable racist worthless piece or shit. It's a binary question.

George Conway 👊🇺🇸🔥 (@gtconway.bsky.social)

This https://arxiv.org/abs/2412.03554 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_eco…

Categorize and randomize: a permissive model of stochastic choice
We model stochastic choices with categorization. The agent preliminarly groups alternatives in homogenous disjoint classes, then randomly chooses one class and randomly picks an item within the selected class. We give a formal definition of a choice generated by this procedure, and provide an axiomatic characterization. The characterizing properties allow an external analyst to elicit that categorization is applied. In a broader interpretation, the model allows to describe the observed choice a…

PSALM-V: Automating Symbolic Planning in Interactive Visual Environments with Large Language Models
Wang Bill Zhu, Miaosen Chai, Ishika Singh, Robin Jia, Jesse Thomason
https://arxiv.org/abs/2506.20097

PSALM-V: Automating Symbolic Planning in Interactive Visual Environments with Large Language Models
We propose PSALM-V, the first autonomous neuro-symbolic learning system able to induce symbolic action semantics (i.e., pre- and post-conditions) in visual environments through interaction. PSALM-V bootstraps reliable symbolic planning without expert action definitions, using LLMs to generate heuristic plans and candidate symbolic semantics. Previous work has explored using large language models to generate action semantics for Planning Domain Definition Language (PDDL)-based symbolic planners.…

Wild Galois representations: elliptic curves with wild cyclic reduction
Nirvana Coppola
https://arxiv.org/abs/2506.20562 https://arxi…

Wild Galois representations: elliptic curves with wild cyclic reduction
In 1990, Kraus classified all possible inertia images of the $\ell$-adic Galois representation attached to an elliptic curve over a non-archimedean local field. In previous work, the author computed explicitly the Galois representation of elliptic curves having non-abelian inertia image, a phenomenon which only occurs when the residue characteristic of the field of definition is $2$ or $3$ and the curve attains good reduction over some non-abelian ramified extension. In this work, the computati…

On flexibility of trinomial varieties
Mikhail Ignatev, Timofey Vilkin
https://arxiv.org/abs/2506.20524 https://arxiv.org/pdf/2506.205…

On flexibility of trinomial varieties
Trinomial varieties are affine varieties given by a system of equations consisting of polynomials with three terms. Such varieties are total coordinate spaces of normal varieties with torus action of complexity one. For an affine variety $X$ we consider the subgroup $\mathrm{SAut}(X)$ of the automorphism group generated by all algebraic subgroups isomorphic to the additive group of the ground field. By definition, an affine variety is flexible if $\mathrm{SAut}(X)$ acts transitively on its regu…

https://seedlinggames.com/blogging/discourse/grounded_fantasy.html
I wrote a blog post defining "grounded fantasy". At least how I see it - I'm sure it's the sort of thing everyone could come up with their own definition of.

The metric system is 150 years old. The metre originated in the French Revolution, but its definition has changed many times since - ABC News https://www.abc.net.au/news/science/2025-05-20/metre-treaty-anniversary-met…

The metre originated in the French Revolution, but its definition has changed many times since
The next time you pick up a bag of spuds from the supermarket or fill up the car with petrol, you can thank a treaty signed in 1875 for the metric system that underpins daily life.

Elliptic arrangements of complex multiplication type
Luca Moci, Roberto Pagaria, Maddalena Pismataro, Alejandro Vargas
https://arxiv.org/abs/2506.19638 htt…

Elliptic arrangements of complex multiplication type
We provide a natural definition of an elliptic arrangement, extending the classical framework to an elliptic curve E with complex multiplication. We analyse the intersections of elements of the arrangement and their connected components as End(E)-modules. Furthermore, we prove that the combinatorial data of elliptic arrangements define both an arithmetic matroid and a matroid over the ring End(E). In this way, we obtain a class of arithmetic matroids that is different from the class of arithmet…

DefElement: an encyclopedia of finite element definitions
Matthew W. Scroggs, Pablo D. Brubeck, Joseph P. Dean, J{\o}rgen S. Dokken, India Marsden
https://arxiv.org/abs/2506.20188

DefElement: an encyclopedia of finite element definitions
DefElement is an online encyclopedia of finite element definitions that was created and is maintained by the authors of this paper. DefElement aims to make information about elements defined in the literature easily available in a standard format. There are a number of open-source finite element libraries available, and it can be difficult to check that an implementation of an element in a library matches the element's definition in the literature or implementation in another library, especiall…

All Kolmogorov complexity functions are optimal, but are some more optimal?
Bruno Bauwens, Alexander Kozachinskiy, Alexander Shen
https://arxiv.org/abs/2506.16180

All Kolmogorov complexity functions are optimal, but are some more optimal?
Kolmogorov (1965) defined the complexity of a string $x$ as the minimal length of a program generating $x$. Obviously this definition depends on the choice of the programming language. Kolmogorov noted that there exist \emph{optimal} programming languages that make the complexity function minimal up to $O(1)$ additive terms, and we should take one of them -- but which one? Is there a chance to agree on some specific programming language in this definition? Or at least should we add some other…

Beginning later this year, the NSF–DOE Vera C. Rubin Observatory will create the ultimate movie of the night sky,
repeatedly scanning the sky for a decade to create an ultra-wide, ultra-high-definition, time-lapse record of our Universe across space and over time.
The resulting dataset, called the Legacy Survey of Space and Time (LSST), will be the largest ever amassed for optical astronomy.
This enormous, all-purpose dataset will bring the night sky to life,
enabli…

Towards Provable (In)Secure Model Weight Release Schemes
Xing Yang, Bingtao Wang, Yuhao Wang, Zimo Ji, Terry Jingchen Zhang, Wenyuan Jiang
https://arxiv.org/abs/2506.19874

Towards Provable (In)Secure Model Weight Release Schemes
Recent secure weight release schemes claim to enable open-source model distribution while protecting model ownership and preventing misuse. However, these approaches lack rigorous security foundations and provide only informal security guarantees. Inspired by established works in cryptography, we formalize the security of weight release schemes by introducing several concrete security definitions. We then demonstrate our definition's utility through a case study of TaylorMLP, a prominent secure…

Lunar Time Ephemeris LTE440: User Manual
Xu Lu, Tian-Ning Yang, Yi Xie
https://arxiv.org/abs/2506.19213 https://arxiv.org/pdf/2506.19…

Lunar Time Ephemeris LTE440: User Manual
We present the numerical lunar time ephemeris LTE440 based on the definition of Lunar Coordinate Time (TCL) given by the International Astronomical Union (IAU) in IAU 2024 Resolution II. LTE440 can be used to obtain the numerical transformation between TCL and Solar System Barycentric Dynamical Time (TCL-TDB) or Solar System Barycentric Coordinate Time (TCL-TCB). The theoretical model, numerical method, and performance of LTE440 are discussed. The secular drifts between TCL and TDB and between …

It seems that Mayor Adams of #NYC is willing to giving up our First Amendment rights to protest the nation of Israel. I normally really appreciate @… reporting, but the passing mention of the problems of the IHRA definition is not good.

Mayor Adams signs executive order adopting antisemitism definition, urges Council to make it law
It follows the city’s launch of a dedicated office to combat anti-Jewish hate.

Advice to the Players - Frank Bidart
There is something missing in our definition, vision, of a human being:
the need to make.
We are creatures who need to make.
Because existence is willy-nilly thrust into our hands, our fate is to
make something— if nothing else, the shape cut by the arc of our lives.
My parents saw corrosively the arc of their lives.
Making is the mirror in which we see ourselves...

Top Links 777 Standout productivity. China bottoms out. AIDS deaths & the "Californian Ideology"
Great links, images, and reading from Chartbook Newsletter by Adam Tooze

Why AI can't possibly make you more productive; long
#AI and "productivity", some thoughts:
Productivity is a concept that isn't entirely meaningless outside the context of capitalism, but it's a concept that is heavily inflected in a capitalist context. In many uses today it effectively means "how much you can satisfy and/or exceed your boss' expectations." This is not really what it should mean: even in an anarchist utopia, people would care about things like how many shirts they can produce in a week, although in an "I'd like to voluntarily help more people" way rather than an "I need to meet this quota to earn my survival" way. But let's roll with this definition for a second, because it's almost certainly what your boss means when they say "productivity", and understanding that word in a different (even if truer) sense is therefore inherently dangerous.
Accepting "productivity" to mean "satisfying your boss' expectations," I will now claim: the use of generative AI cannot increase your productivity.
Before I dive in, it's imperative to note that the big generative models which most people think of as constituting "AI" today are evil. They are 1: pouring fuel on our burning planet, 2: psychologically strip-mining a class of data laborers who are exploited for their precarity, 3: enclosing, exploiting, and polluting the digital commons, and 4: stealing labor from broad classes of people many of whom are otherwise glad to give that labor away for free provided they get a simple acknowledgement in return. Any of these four "ethical issues" should be enough *alone* to cause everyone to simply not use the technology. These ethical issues are the reason that I do not use generative AI right now, except for in extremely extenuating circumstances. These issues are also convincing for a wide range of people I talk to, from experts to those with no computer science background. So before I launch into a critique of the effectiveness of generative AI, I want to emphasize that such a critique should be entirely unnecessary.
But back to my thesis: generative AI cannot increase your productivity, where "productivity" has been defined as "how much you can satisfy and/or exceed your boss' expectations."
Why? In fact, what the fuck? Every AI booster I've met has claimed the opposite. They've given me personal examples of time saved by using generative AI. Some of them even truly believe this. Sometimes I even believe they saved time without horribly compromising on quality (and often, your boss doesn't care about quality anyways if the lack of quality is hard to measure of doesn't seem likely to impact short-term sales/feedback/revenue). So if generative AI genuinely lets you write more emails in a shorter period of time, or close more tickets, or something else along these lines, how can I say it isn't increasing your ability to meet your boss' expectations?
The problem is simple: your boss' expectations are not a fixed target. Never have been. In virtue of being someone who oversees and pays wages to others under capitalism, your boss' game has always been: pay you less than the worth of your labor, so that they can accumulate profit and this more capital to remain in charge instead of being forced into working for a wage themselves. Sure, there are layers of manservant caught in between who aren't fully in this mode, but they are irrelevant to this analysis. It matters not how much you please your manager if your CEO thinks your work is not worth the wages you are being paid. And using AI actively lowers the value of your work relative to your wages.
Why do I say that? It's actually true in several ways. The most obvious: using generative AI lowers the quality of your work, because the work it produces is shot through with errors, and when your job is reduced to proofreading slop, you are bound to tire a bit, relax your diligence, and let some mistakes through. More than you would have if you are actually doing and taking pride in the work. Examples are innumerable and frequent, from journalists to lawyers to programmers, and we laugh at them "haha how stupid to not check whether the books the AI reviewed for you actually existed!" but on a deeper level if we're honest we know we'd eventually make the same mistake ourselves (bonus game: spot the swipe-typing typos I missed in this post; I'm sure there will be some).
But using generative AI also lowers the value of your work in another much more frightening way: in this era of hype, it demonstrates to your boss that you could be replaced by AI. The more you use it, and no matter how much you can see that your human skills are really necessary to correct its mistakes, the more it appears to your boss that they should hire the AI instead of you. Or perhaps retain 10% of the people in roles like yours to manage the AI doing the other 90% of the work. Paradoxically, the *more* you get done in terms of raw output using generative AI, the more it looks to your boss as if there's an opportunity to get enough work done with even fewer expensive humans. Of course, the decision to fire you and lean more heavily into AI isn't really a good one for long-term profits and success, but the modern boss did not get where they are by considering long-term profits. By using AI, you are merely demonstrating your redundancy, and the more you get done with it, the more redundant you seem.
In fact, there's even a third dimension to this: by using generative AI, you're also providing its purveyors with invaluable training data that allows them to make it better at replacing you. It's generally quite shitty right now, but the more use it gets by competent & clever people, the better it can become at the tasks those specific people use it for. Using the currently-popular algorithm family, there are limits to this; I'm not saying it will eventually transcend the mediocrity it's entwined with. But it can absolutely go from underwhelmingly mediocre to almost-reasonably mediocre with the right training data, and data from prompting sessions is both rarer and more useful than the base datasets it's built on.
For all of these reasons, using generative AI in your job is a mistake that will likely lead to your future unemployment. To reiterate, you should already not be using it because it is evil and causes specific and inexcusable harms, but in case like so many you just don't care about those harms, I've just explained to you why for entirely selfish reasons you should not use it.
If you're in a position where your boss is forcing you to use it, my condolences. I suggest leaning into its failures instead of trying to get the most out of it, and as much as possible, showing your boss very clearly how it wastes your time and makes things slower. Also, point out the dangers of legal liability for its mistakes, and make sure your boss is aware of the degree to which any of your AI-eager coworkers are producing low-quality work that harms organizational goals.
Also, if you've read this far and aren't yet of an anarchist mindset, I encourage you to think about the implications of firing 75% of (at least the white-collar) workforce in order to make more profit while fueling the climate crisis and in most cases also propping up dictatorial figureheads in government. When *either* the AI bubble bursts *or* if the techbros get to live out the beginnings of their worker-replacement fantasies, there are going to be an unimaginable number of economically desperate people living in increasingly expensive times. I'm the kind of optimist who thinks that the resulting social crucible, though perhaps through terrible violence, will lead to deep social changes that effectively unseat from power the ultra-rich that continue to drag us all down this destructive path, and I think its worth some thinking now about what you might want the succeeding stable social configuration to look like so you can advocate towards that during points of malleability.
As others have said more eloquently, generative AI *should* be a technology that makes human lives on average easier, and it would be were it developed & controlled by humanists. The only reason that it's not, is that it's developed and controlled by terrible greedy people who use their unfairly hoarded wealth to immiserate the rest of us in order to maintain their dominance. In the long run, for our very survival, we need to depose them, and I look forward to what the term "generative AI" will mean after that finally happens.

Note that nowhere in that definition is there actually any attempt to define or measure “intelligence” — a term which we are scarcely able to define and to measure even for humans!
Note also that the definition is inherently a broad one and a shifting one. It’s relative to humans •and• relative to recent history.
4/

Kid1: Dad, if you're bald, is your whole head your forehead?
Me: Um...
Kid1: I mean, the definition of a forehead is the space between your eyes and your hair, right?

To Flow or Not To Flow? The granular Bond number to predict clogging in low gravity
Oliver Gaida, Olfa D'Angelo, Jonathan E. Kollmer
https://arxiv.org/abs/2506.18771

To Flow or Not To Flow? The granular Bond number to predict clogging in low gravity
In granular hopper flow, is the clogging probability influenced by gravity? Clogging, the spontaneous arrest of granular flow through a constriction, is a fundamental and widespread phenomenon in granular processing. Accurately predicting clogging risk is essential for space-related activities. Yet, conflicting results leave us without a reliable way to extrapolate terrestrial data to low gravity. We introduce an in-bulk definition of the dimensionless granular Bond number, B, to scale clogging…

Observational Constraints on Scalar Field--Matter Interaction in Weyl Integrable Spacetime
Andronikos Paliathanasis
https://arxiv.org/abs/2506.16223 https:…

Observational Constraints on Scalar Field--Matter Interaction in Weyl Integrable Spacetime
We test an analytic cosmological solution within the framework of Weyl Integrable Spacetime using current observational data. In this model, dark energy is described by a pressureless fluid, while a scalar field arises naturally through the definition of the connection. This gravitational theory reveals a Chameleon Mechanism leading to a nonzero interaction between the scalar field and the matter sector. This model extends the standard $Λ$CDM cosmology by introducing one additional degree of f…

qa_user: User interactions on Q&A websites (2016)
Networks of interactions among users from four online Q&A sites: Stack Overflow, Math Overflow, Super User, and Ask Ubuntu. A directed edge (i,j) indicates a user i responded to user j's post. Edges are timestamped. For each Q&A site, four differently defined networks are provided, based on the definition of an edge: (i) a user answered a question, (ii) a user commented on a question, (iii) a user commented on an answer…

Characterization of Higher-Order Sobolev Spaces on the Sphere via Generalized Averaging of Function
Ikhsan Maulidi, Hiroshi Ohtsuka
https://arxiv.org/abs/2506.17736

Characterization of Higher-Order Sobolev Spaces on the Sphere via Generalized Averaging of Function
We present a new characterization of higher-order Sobolev spaces on the sphere. Building on the approach of Barceló et al. (2020), we refine the square function they introduced for this purpose. In particular, we provide a detailed analysis of the weight function and the averaging range in its definition. Our results demonstrate that averaging can be performed using a weight function from a broad class, and that the averaging domain can be restricted to a local coordinate patch on the sphere.

Wavefunction branches demand a definition!
C. Jess Riedel
https://arxiv.org/abs/2506.15663 https://arxiv.org/pdf/2506.15663

Wavefunction branches demand a definition!
Under unitary evolution, a typical macroscopic quantum system is thought to develop wavefunction branches: a time-dependent decomposition into orthogonal components that (1) form a tree structure forward in time, (2) are approximate eigenstates of quasiclassical macroscopic observables, and (3) exhibit effective collapse of feasibly measurable observables. If they could be defined precisely, wavefunction branches would extend the theory of decoherence beyond the system-environment paradigm and …

(Re)-Defining Planets -- the Fundamental Plane of Planets
Madhu Kashyap Jagadeesh, Arkil D. Parikh, Margarita Safonova, Bernard Foing
https://arxiv.org/abs/2506.16063

(Re)-Defining Planets -- the Fundamental Plane of Planets
6000+ exoplanets are now detected using various techniques, with estimates of billions of planets existing in our Galaxy alone. They are called super-Earths, hot Earths, mini-Neptunes, hot Neptunes, sub-Neptunes, Saturns, Jupiters, hot Jupiters, gas giants, ice giants, rocky, terran, subterran, superterran, and so on. This prompted the emergence of many recent works on taxonomy, or classification, of exoplanets. However, there is still no basic, fundamental definition of 'What is a planet?'. IA…

Pattern formation Statistics on Fermat Quotients
Cristian Cobeli, Alexandru Zaharescu, Zhuo Zhang
https://arxiv.org/abs/2506.17684 https://

Pattern formation Statistics on Fermat Quotients
Despite their simple definition as $\mathfrak{q}_p(b):=\frac{b^{p-1}-1}{p} \pmod p$, for $0\le b \le p^2-1$ and $\gcd(b,p)=1$, and their regular arrangement in a $p\times(p-1)$ Fermat quotient matrix $\mathtt{FQM}(p)$ of integers from $[0,p-1]$, Fermat quotients modulo $p$ are well known for their overall lack of regularity. Here, we discuss this contrasting effect by proving that, on the one hand, any line of the matrix behaves like an analogue of a randomly distributed sequence of numbers, an…

What Really is a Member? Discrediting Membership Inference via Poisoning
Neal Mangaokar, Ashish Hooda, Zhuohang Li, Bradley A. Malin, Kassem Fawaz, Somesh Jha, Atul Prakash, Amrita Roy Chowdhury
https://arxiv.org/abs/2506.06003

What Really is a Member? Discrediting Membership Inference via Poisoning
Membership inference tests aim to determine whether a particular data point was included in a language model's training set. However, recent works have shown that such tests often fail under the strict definition of membership based on exact matching, and have suggested relaxing this definition to include semantic neighbors as members as well. In this work, we show that membership inference tests are still unreliable under this relaxation - it is possible to poison the training dataset in a way…

#PhantastikPrompts 16.06.:
Bist du Mitglied in einer Schreibgruppe?
Schwer zu beantworten. Ich bin in ein paar Foren/Discord-Servern mit Schreibbezug, aber irgendwie passt die Definition da für mich nicht so recht und ich bin derzeit nicht sonderlich aktiv dort.

Russel Vought meets my definition of pure evil, through and through.
"Russell Vought, Director of the Office of Management and Budget, told appropriators last week that the administration is seeking to take “an analytical look” at Aids prevention and instead prioritize funding for “life-saving treatment” for sufferers as part of its scaling back of PEPFAR."
White House says it will spare some Aids programs that were on the chopping block | The Independent
https://www.independent.co.uk/news/world/americas/us-politics/white-house-aids-prevention-funding-b2767327.html

Causes in neuron diagrams, and testing causal reasoning in Large Language Models. A glimpse of the future of philosophy?
Louis Vervoort, Vitaly Nikolaev
https://arxiv.org/abs/2506.14239

Causes in neuron diagrams, and testing causal reasoning in Large Language Models. A glimpse of the future of philosophy?
We propose a test for abstract causal reasoning in AI, based on scholarship in the philosophy of causation, in particular on the neuron diagrams popularized by D. Lewis. We illustrate the test on advanced Large Language Models (ChatGPT, DeepSeek and Gemini). Remarkably, these chatbots are already capable of correctly identifying causes in cases that are hotly debated in the literature. In order to assess the results of these LLMs and future dedicated AI, we propose a definition of cause in neur…

Convexity in tensor triangular geometry
Changhan Zou
https://arxiv.org/abs/2506.12429 https://arxiv.org/pdf/2506.12429

Convexity in tensor triangular geometry
We classify the dualizable localizing ideals of rigidly-compactly generated tt-$\infty$-categories that are cohomologically stratified. By definition, these are the localizing ideals that are dualizable with respect to the Lurie tensor product. We prove that these ideals correspond to the convex subsets of the Balmer spectrum. More generally, we establish this classification for categories which are locally cohomologically stratified and whose Balmer spectrum is noetherian. The classification t…

from my link log —
Alan Kay did not invent object-oriented programming.
https://www.hillelwayne.com/post/alan-kay/
saved 2025-05-11 https://

Quadratic estimates for the $H^\infty$-functional calculus of bisectorial Clifford operators
Fabrizio Colombo, Francesco Mantovani, Peter Schlosser
https://arxiv.org/abs/2506.16783

Quadratic estimates for the $H^\infty$-functional calculus of bisectorial Clifford operators
The $H^\infty$-functional calculus is a two-step procedure, introduced by A. McIntosh, that allows the definition of functions of sectorial operators in Banach spaces. It plays a crucial role in the spectral theory of differential operators, as well as in their applications to evolution equations and various other fields of science. An extension of the $H^\infty$-functional calculus also exists in the hypercomplex setting, where it is based on the notion of $S$-spectrum. Originally this was don…

"This so-called big, beautiful bill pushes 16 million people off of health care and literally takes food from the mouths of hungry children. An enormous tax cut for the very wealthiest is the definition of an immoral bill," said Sen. Coons, a Presbyterian and graduate of Yale Divinity School.

Episcopalians join other faith leaders, lawmakers, in DC rally against budget bill
[Religion News Service – Washington] Religious leaders are ramping up pressure on lawmakers to reject the Republican-led budget bill currently before the U.S. Senate, arguing proposed cuts to healt…

#jukeboxfridaynight
#FunkyMusic
One more for this week. Not quite the definition of Funk, but still awesome.
You Louisiana Man by Rhiannon Giddens
https://youtu.be/j2oiQtAjcPk?si=vH293uLYv6WCJzVZ

Meta Optimality for Demographic Parity Constrained Regression via Post-Processing
Kazuto Fukuchi
https://arxiv.org/abs/2506.13947 https://

Meta Optimality for Demographic Parity Constrained Regression via Post-Processing
We address the regression problem under the constraint of demographic parity, a commonly used fairness definition. Recent studies have revealed fair minimax optimal regression algorithms, the most accurate algorithms that adhere to the fairness constraint. However, these analyses are tightly coupled with specific data generation models. In this paper, we provide meta-theorems that can be applied to various situations to validate the fair minimax optimality of the corresponding regression algori…

Cosmology Constraints from Type Ia Supernova Simulations of the Nancy Grace Roman Space Telescope Strategy Recommended by the High Latitude Time Domain Survey Definition Committee
Richard Kessler, Rebekah Hounsell, Bhavin Joshi, David Rubin, Masao Sako, Rebecca Chen, Vivian Miranda, Benjamin. M. Rose
https://arxiv.org/abs/2506.0…

Cosmology Constraints from Type Ia Supernova Simulations of the Nancy Grace Roman Space Telescope Strategy Recommended by the High Latitude Time Domain Survey Definition Committee
Within the next few years, the upcoming Nancy Grace Roman Space Telescope will be gathering data for the High Latitude Time Domain Survey (HLTDS) that will be used to significantly improve the Type Ia supernova measurement of the dark energy equation of state parameters w0 and wa. Here we generate a catalog-level simulation of the in-guide strategy recommended by the HLTDS definition committee, and determine dark energy parameter constraints using a detailed analysis that includes light curve f…

@… Noticed an issue with the definition box for "flash loan attack" on @… (all other definition boxes work)

Controller Synthesis for Parametric Timed Games
Mikael Bisgaard Dahlsen-Jensen (Aarhus University, Aarhus, Denmark), Baptiste Fievet (Universit\'e Sorbonne Paris Nord CNRS, Villetaneuse, France), Laure Petrucci (Universit\'e Sorbonne Paris Nord CNRS, Villetaneuse, France), Jaco van de Pol (Aarhus University, Aarhus, Denmark)
https://

Controller Synthesis for Parametric Timed Games
We present a (semi)-algorithm to compute winning strategies for parametric timed games. Previous algorithms only synthesized constraints on the clock parameters for which the game is winning. A new definition of (winning) strategies is proposed, and ways to compute them. A transformation of these strategies to (parametric) timed automata allows for building a controller enforcing them. The feasibility of the method is demonstrated by an implementation and experiments for the Production Cell cas…

"UK must consider food and climate part of national security, say top ex-military figures"
#UK #UnitedKingdom #Climate

50 years ago tonight in san rafael, the only circulating tape of the full seastones ensemble featuring ned lagin, phil lesh, jerry garcia, david crosby, & mickey hart (in orchestra pit), celebrating the newly released LP. definition of a fully blended quintet & the last circulating lagin/garcia tape. one of the gems of the tape canon. owsley tape, tracks 34-42:

"I Hadn't Thought About That": Creators of Human-like AI Weigh in on Ethics And Neurodivergence
Naba Rizvi, Taggert Smith, Tanvi Vidyala, Mya Bolds, Harper Strickland, Andrew Begel, Rua Williams, Imani Munyaka
https://arxiv.org/abs/2506.12098

"I Hadn't Thought About That": Creators of Human-like AI Weigh in on Ethics And Neurodivergence
Human-like AI agents such as robots and chatbots are becoming increasingly popular, but they present a variety of ethical concerns. The first concern is in how we define humanness, and how our definition impacts communities historically dehumanized by scientific research. Autistic people in particular have been dehumanized by being compared to robots, making it even more important to ensure this marginalization is not reproduced by AI that may promote neuronormative social behaviors. Second, th…

Note that nowhere in that definition is there actually any attempt to define or measure “intelligence” — a term which we are scarcely able to define and to measure even for humans!
Note also that the definition is inherently a broad one and a shifting one. It’s relative to humans •and• relative to recent history.
4/

This https://arxiv.org/abs/2411.11867 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qbi…

Stability in Reaction Network Models via an Extension of the Next Generation Matrix Method
In this essay, we investigate some relations between Chemical Reaction Networks (CRN) and Mathematical Epidemiology (ME) and report on several pleasant surprises which we had simply by putting these two topics together. Firstly, we propose a definition of ME models as a subset of CRN models. Secondly, we review a fundamental stability result for boundary points, known in ME as the NGM method since it replaces the investigation of the Jacobian by that of a matrix whose origins lie in probabi…

Diagrams of links and bands on 3-manifold spines and flow-spines
Carlo Petronio
https://arxiv.org/abs/2506.14320 https://arxiv.org/pd…

Diagrams of links and bands on 3-manifold spines and flow-spines
The Reidemeister theorem states that any link in $3$-space can be encoded by a diagram (a suitably decorated projection) on a plane, and provides a finite set of combinatorial moves relating two diagrams of the same link up to isotopy. In this note we replace $3$-space by any 3-manifold $M$ and we extend the Reidemeister theorem (definition of the decoration and description of the combinatorial moves) in four situations, taking diagrams either of links or of bands (collections of cylinders and …

@…
I stumbled over "pointed sets" a couple decades ago, and my friend Andras Kornai said that coincidentally he was using them very profitably in his research. (He's a mathematical linguist; I don't recall if you two ever met online.)
I know their definition is pretty trivial, but have you ever had occasion to nonetheles…

Partial Group Symmetry in Figures I: Semidirect Products and the Six Coins
Takahiro Hayashi
https://arxiv.org/abs/2506.14304 https://…

Partial Group Symmetry in Figures I: Semidirect Products and the Six Coins
In this paper, we construct a partial group \(\mathcal{P}(F)\) that represents the "partial symmetry" inherent in a subset \(F\) of \(d\)-dimensional Euclidean space. In cases where \(F\) is not connected, \(\mathcal{P}(F)\) captures more detailed information than the conventional symmetry group \(G(F)\). To establish a stronger connection between \(\mathcal{P}(F)\) and \(F\), we introduce a novel definition of partial group action. Furthermore, to characterize \(\mathcal{P}(F)\) in specific ca…

ambassador: Philippines Ambassador bombing (2000)
A temporal network representing snapshots of relationships among individuals directly or indirectly associated with Philippines Ambassador Residence Bombing 2000, Jakarta. Nodes are people, and an edge exists if they are associated with each other. Definition of the edge weight is unknown.
This network has 16 nodes and 13 edges.
Tags: Social, Offline, Weighted, Temporal

A generalization of the ADM mass for asymptotically Euclidean manifolds of weak regularity
Stig Lundgren, Benjamin Meco
https://arxiv.org/abs/2506.02670 ht…

A generalization of the ADM mass for asymptotically Euclidean manifolds of weak regularity
We propose a new definition of the ADM mass for asymptotically Euclidean manifolds inspired by the definition of mass for weakly regular asymptotically hyperbolic manifolds by Gicquaud and Sakovich. This version of the mass allows one to work with metrics of local Sobolev regularity $ W^{1,2}_\text{loc} \cap L^\infty $ and we show, under suitable asymptotic assumptions, that the mass is finite, invariant under a change of coordinates at infinity and that it agrees with the classical ADM mass in…

This https://arxiv.org/abs/2504.20262 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csCC_…

On closure properties of TotP
The class TotP consists of functions that count the number of all paths of a nondeterministic polynomial-time Turing machine. In this paper, we give a second definition of the class TotP in terms of certificates and verifiers, and present a few natural closure properties of this class. From the second definition of TotP it follows that TotP = #P if and only if P = NP. We also prove that the closure of TotP under left composition with the class FP+ is equivalent to TotP = FP+ and P = PP, and giv…

Delighted to see these two new papers come out in Nature (they've been on bioRxiv for a while).
How does Pavlov's dog learn that the bell predicts the food? One answer is that the bell appears ``close'' in time to the food and that enables learning. We're certain that dopamine has something to do with learning these kinds of associations. But the definition of ``close'' in time is actually really difficult to pin down. You can get associations over prett…

Very, very useful:
https://abyssdomain.expert/@filippo/114496179105976467

New definition of bloatware?
The Ubuntu 25.04 desktop iso is 5.84 Gb.
I guess I'll be updating you from my new kitchensink soon.

$\beta$-integrated local depth and corresponding partitioned local depth representation
Siyi Wang, Alexandre Leblanc, Paul D. McNicholas
https://arxiv.org/abs/2506.14108

$β$-integrated local depth and corresponding partitioned local depth representation
A novel local depth definition, $β$-integrated local depth ($β$-ILD), is proposed as a generalization of the local depth introduced by Paindaveine and Van Bever \cite{paindaveine2013depth}, designed to quantify the local centrality of data points. $β$-ILD inherits desirable properties from global data depth and remains robust across varying locality levels. A partitioning approach for $β$-ILD is introduced, leading to the construction of a matrix that quantifies the contribution of one poin…

Stereotype graph: A mathematical framework of category stereotypes via graph theory
Yijia Yan
https://arxiv.org/abs/2506.12533 https://

Stereotype graph: A mathematical framework of category stereotypes via graph theory
In social psychology and cognitive science, there has been much interest in studying category stereotypes. However, we still lack a consensual mathematical definition or framework, which is necessary for us to hold a deeper understanding of stereotypes in human cognition. In this paper, we use graph theory to portray category stereotypes in human cognition, based on pairs of labels having special relations. By using methods and conclusions in graph theory (including algebraic graph theory and v…

System-Aware Unlearning Algorithms: Use Lesser, Forget Faster
Linda Lu, Ayush Sekhari, Karthik Sridharan
https://arxiv.org/abs/2506.06073 https://

System-Aware Unlearning Algorithms: Use Lesser, Forget Faster
Machine unlearning addresses the problem of updating a machine learning model/system trained on a dataset $S$ so that the influence of a set of deletion requests $U \subseteq S$ on the unlearned model is minimized. The gold standard definition of unlearning demands that the updated model, after deletion, be nearly identical to the model obtained by retraining. This definition is designed for a worst-case attacker (one who can recover not only the unlearned model but also the remaining data samp…

On measure-valued solutions for a structured population model with transfers
Pierre Magal (IMB), Ga\"el Raoul (CMAP, MERGE)
https://arxiv.org/abs/2506.13225

On measure-valued solutions for a structured population model with transfers
We consider a transfer operator where two interacting cells carrying non-negative traits transfer a random fraction of their trait to each other. These transfers can lead to population having singular distributions in trait. We extend the definition of the transfer operator to non-negative measures with a finite second moment, and we discuss the regularity of the fixed distributions of that transfer operator. Finally, we consider a dynamic transfer model where an initial population distribution…

More ghost modules I
Kiyoshi Igusa
https://arxiv.org/abs/2506.12904 https://arxiv.org/pdf/2506.12904…

More ghost modules I
Ghost modules were introduced in [I3] without definitions or proofs. We also introduced stability diagrams or "relative pictures" for torsion classes and torsion-free classes for representations of Dynkin quivers. Modules which were not in the chosen class reappeared as "ghosts", in fact one missing module produced two ghosts. In this short paper, we give a precise definition of ghost modules. We give several examples and prove basis properties of ghosts and pictures for torsion and torsion-fre…

The definition of egregious
#StacyKamano
S11E18 "The Return of Jessie"
#BaywatchHawaii #RandomBaywatch

This https://arxiv.org/abs/2404.08210 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

The Inverse Carson's Equations Problem: Definition, Implementation and Numerical Experiments
In recent years, with the increase in renewable energy and storage penetration, power flow studies in low-voltage networks have become of interest in both industry and academia. Many studies use impedance represented by sequence components due to the lack of datasets with fully parameterized impedance matrices. This assumes that the network impedance is balanced, which is typically not the case in the low-voltage network and therefore risks the accuracy of the study. This paper proposes a metho…

Here’s the real actual definition of “artificial intelligence,” the true technical meaning in research and engineering circles when it’s not being used as marketing hype.
Artificial intelligence is anything that
1. humans are generally good at, and
2. computers were recently bad at.
That’s it. That’s all it means. You’ll hear people refine it and dress it up, but that’s the heart of the definition. (Check Wikipedia!)
3/

#PhantastikPrompts 14.6.: Sex sells heißt es. Wie sehr gehst du in die Details?
Ja.
Im Ernst, ich schreibe bewusst und mit Absicht Texte, bei denen ich beabsichtige (oder zumindest billigend in Kauf nehme), dass dafür empfängliche Leute sexuell erregt werden.
Das ist meine Definition für "pornografisches Schreiben" und dazu gehören sehr ausführliche Beschreib…

Positive Geometry of Polytopes and Polypols
Simon Telen
https://arxiv.org/abs/2506.05510 https://arxiv.org/pdf/2506.05510

Positive Geometry of Polytopes and Polypols
These are lecture notes supporting a minicourse taught at the Summer School in Total Positivity and Quantum Field Theory at CMSA Harvard in June 2025. We give an introduction to positive geometries and their canonical forms. We present the original definition by Arkani-Hamed, Bai and Lam, and a more recent definition suggested by work of Brown and Dupont. We compute canonical forms of convex polytopes and of quasi-regular polypols, which are nonlinear generalizations of polygons in the plane. T…

General and Estimable Learning Bound Unifying Covariate and Concept Shifts
Hongbo Chen, Li Charlie Xia
https://arxiv.org/abs/2506.12829 https://

General and Estimable Learning Bound Unifying Covariate and Concept Shifts
Generalization under distribution shift remains a core challenge in modern machine learning, yet existing learning bound theory is limited to narrow, idealized settings and is non-estimable from samples. In this paper, we bridge the gap between theory and practical applications. We first show that existing bounds become loose and non-estimable because their concept shift definition breaks when the source and target supports mismatch. Leveraging entropic optimal transport, we propose new support…

Algebras, Entanglement Islands, and Observers
Hao Geng, Yikun Jiang, Jiuci Xu
https://arxiv.org/abs/2506.12127 https://arxiv.org/pdf/…

Algebras, Entanglement Islands, and Observers
Some recent work has postulated the existence of an "observer" for a consistent definition of subregion algebras in gravitational universes. The subregion algebras consist of operators dressed to this "observer" and are typically Type II von Neumann algebras. Nevertheless, as opposed to standard physical systems, such an "observer" was postulated to have a Hamiltonian $\hat{H}_{\text{obs}}$ linear in phase space variable. This linear form suggests that the complete dynamics of such an "observer…

Even the authors of the definition don’t want it used this way because they recognize that it’s weaponization.
From: @…
https://mastodon.social/@islamoyankee/

Here’s the real actual definition of “artificial intelligence,” the true technical meaning in research and engineering circles when it’s not being used as marketing hype.
Artificial intelligence is anything that
1. humans are generally good at, and
2. computers were recently bad at.
That’s it. That’s all it means. You’ll hear people refine it and dress it up, but that’s the heart of the definition. (Check Wikipedia!)
3/

Curvature-Enhanced Inertia in Curved Spacetimes: An ADM-Based Formalism with Multipole Connections
Ilias Kynigalakis
https://arxiv.org/abs/2506.12983 https…

Curvature-Enhanced Inertia in Curved Spacetimes: An ADM-Based Formalism with Multipole Connections
We propose a covariant definition of an inertia tensor on spatial hypersurfaces in general relativity, constructed via integrals of geodesic distance functions using the exponential map. In the ADM 3+1 decomposition, we consider a spacelike slice (Sigma, gamma_ij) with induced metric gamma_ij, lapse N, shift N^i, and a mass-energy density rho(x) on Sigma. At each point p in Sigma, we define a Riemannian inertia tensor I_p(u,v) as an integral over Sigma involving geodesic distances and the expon…

qa_user: User interactions on Q&A websites (2016)
Networks of interactions among users from four online Q&A sites: Stack Overflow, Math Overflow, Super User, and Ask Ubuntu. A directed edge (i,j) indicates a user i responded to user j's post. Edges are timestamped. For each Q&A site, four differently defined networks are provided, based on the definition of an edge: (i) a user answered a question, (ii) a user commented on a question, (iii) a user commented on an answer…

Surface Minkowski tensors to characterize shapes on curved surfaces
Lea Happel, Hanne Hardering, Simon Praetorius, Axel Voigt
https://arxiv.org/abs/2506.13880

Surface Minkowski tensors to characterize shapes on curved surfaces
We introduce surface Minkowski tensors to characterize rotational symmetries of shapes embedded in curved surfaces. The definition is based on a modified vector transport of the shapes boundary co-normal into a reference point which accounts for the angular defect that a classical parallel transport would introduce. This modified transport can be easily implemented for general surfaces and differently defined embedded shapes, and the associated irreducible surface Minkowski tensors give rise to…

Explainable AI Systems Must Be Contestable: Here's How to Make It Happen
Catarina Moreira, Anna Palatkina, Dacia Braca, Dylan M. Walsh, Peter J. Leihn, Fang Chen, Nina C. Hubig
https://arxiv.org/abs/2506.01662

Explainable AI Systems Must Be Contestable: Here's How to Make It Happen
As AI regulations around the world intensify their focus on system safety, contestability has become a mandatory, yet ill-defined, safeguard. In XAI, "contestability" remains an empty promise: no formal definition exists, no algorithm guarantees it, and practitioners lack concrete guidance to satisfy regulatory requirements. Grounded in a systematic literature review, this paper presents the first rigorous formal definition of contestability in explainable AI, directly aligned with stakeholder …

Ask yourself: How many water bottles thrown at cops are worth keeping one innocent American* teen out of inhumane #ICE detention?
For anyone criticizing the #LA protests or suggesting they should stop for any reason, let's be clear about the stakes. Read this article (or my summary):
https://abcnews.go.com/US/massachusetts-teen-detained-ice-family-video-ice/story?id=122511685
This 18-year-old was snatched without a warrant, because he was in his dad's car and allegedly (possibly a lie or mistake) his dad drove recklessly. He's been in the US since he was 5, originally on a student visa that's since expired. He is an innocent American, by any reasonable definition of those two words*. Thankfully, he's since been released on bail, but he may yet be held indefinitely in ICE detention (in inhumane conditions that have been repeatedly documented) and/or separated from his family & friends and shipped off to Brazil where he last lived when he was 5 (ICE does not care whether he speaks Portuguese, has any family there, etc), all potentially without due process (though he seems to be getting that in this case). Even if this doesn't happen to Marcelo due to the media attention & protests, it is certainly happening to other innocent Americans throughout the country who aren't as lucky to have people standing up for them.
Here's Marcelo speaking about detention conditions and those he was detained with:
https://youtube.com/shorts/ZpZMUb9aEys?si=bpK-022CU7Acb5RY
Do you know how many kids like Marcelo were detained in LA yesterday? Probably zero, because of the protests, including their confrontational tactics. The most "violence" I've seen (from the protestors) is throwing a water bottle at a line of heavily-armored riot police. So the protests are working to protect the community. If you're suggesting a change in tactics, consider whether your suggested tactics (like pre-scheduled non-confrontational protests that have been happening for weeks) will protect the Marcelos of LA.
*Whether he's innocent or American should not in fact matter, but sadly it might to some reading this. If that's you, you've still got some growing up to do.

The Volume-Renormalized Mass from a Hamiltonian Perspective
Mattias Dahl, Klaus Kroencke, Stephen McCormick
https://arxiv.org/abs/2506.11841 https://

The Volume-Renormalized Mass from a Hamiltonian Perspective
We demonstrate that the volume-renormalized mass for asymptotically hyperbolic manifolds recently introduced by the authors can be deduced from a reduced Hamiltonian perspective. In order to do this, we first use Michel's formalism of mass invariants to extend the definition of the volume-renormalized mass to initial data sets. We consider spacetimes that are foliated by asymptotically Poincaré--Einstein Riemannian manifolds in the spirit of the Milne model of cosmology and reduce the ADM Ha…

The Combinatorial Rank of Subsets: Metric Density in Finite Hamming Spaces
Jamolidin K. Abdurakhmanov
https://arxiv.org/abs/2506.13081 https://

The Combinatorial Rank of Subsets: Metric Density in Finite Hamming Spaces
We introduce a novel concept of rank for subsets of finite metric spaces E^n_q (the set of all n-dimensional vectors over an alphabet of size q) equipped with the Hamming distance, where the rank R(A) of a subset A is defined as the number of non-constant columns in the matrix formed by the vectors of A. This purely combinatorial definition provides a new perspective on the structure of finite metric spaces, distinct from traditional linear-algebraic notions of rank. We establish tight bounds f…

Study of $p^{k}$-Eulerian polynomials and $p^{k}$-Fibonacci numbers for every odd prime $p$ and $k\geq0$
M. Parvathi, A. Tamilselvi, D. Hepsi
https://arxiv.org/abs/2506.09941

Study of $p^{k}$-Eulerian polynomials and $p^{k}$-Fibonacci numbers for every odd prime $p$ and $k\geq0$
In this paper, we define the notion of descent for the paths in the $p$-Bratteli diagram. This leads to the definition of $p^{k}$-Eulerian polynomials, whose coefficients count the number of paths with a given number of descents. We provide a method for constructing the $p^{k}$-Eulerian polynomials at each vertex. Furthermore, we compute the total number of descents of all paths ending at a given vertex as the corresponding $p^{k}$-Fibonacci numbers. We show that the derivative of the $p^{k}$-E…

This https://arxiv.org/abs/2411.11867 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qbi…

Stability in Reaction Network Models via an Extension of the Next Generation Matrix Method
In this essay, we investigate some relations between Chemical Reaction Networks (CRN) and Mathematical Epidemiology (ME) and report on several pleasant surprises which we had simply by putting these two topics together. Firstly, we propose a definition of ME models as a subset of CRN models. Secondly, we review a fundamental stability result for boundary points, known in ME as the NGM method since it replaces the investigation of the Jacobian by that of a matrix whose origins lie in probabi…

The definition of egregious
#StacyKamano
S11E18 "The Return of Jessie"
#BaywatchHawaii #RandomBaywatch

Large-Scale-Structure Observables in General Relativity Validated at Second Order
Antoine Villey, Yonadav Barry Ginat, Vincent Desjacques, Donghui Jeong, Fabian Schmidt
https://arxiv.org/abs/2506.11260

Large-Scale-Structure Observables in General Relativity Validated at Second Order
We present a second-order calculation of relativistic large-scale-structure observables in cosmological perturbation theory, specifically the "cosmic rulers and clock", which are the building-blocks of any other large-scale-structure observable, including galaxy number counts, on large scales. We calculate the scalar rulers (longitudinal perturbation and magnification) and the cosmic clock to second order, using a fully non-linear covariant definition of the observables. We validate our formula…

ambassador: Philippines Ambassador bombing (2000)
A temporal network representing snapshots of relationships among individuals directly or indirectly associated with Philippines Ambassador Residence Bombing 2000, Jakarta. Nodes are people, and an edge exists if they are associated with each other. Definition of the edge weight is unknown.
This network has 16 nodes and 69 edges.
Tags: Social, Offline, Weighted, Temporal

This https://arxiv.org/abs/2505.11370 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLG_…

Understanding Nonlinear Implicit Bias via Region Counts in Input Space
One explanation for the strong generalization ability of neural networks is implicit bias. Yet, the definition and mechanism of implicit bias in non-linear contexts remains little understood. In this work, we propose to characterize implicit bias by the count of connected regions in the input space with the same predicted label. Compared with parameter-dependent metrics (e.g., norm or normalized margin), region count can be better adapted to nonlinear, overparameterized models, because it is de…

A closer look at the algebraic-operator correspondence between position and momentum space in Quantum Mechanics
Siddharth Dwivedi
https://arxiv.org/abs/2506.10950

A closer look at the algebraic-operator correspondence between position and momentum space in Quantum Mechanics
In this work we take a closer look at the algebraic-operator correspondence between the momentum ($k$) space and the position ($x$) space which gives us the form of the momentum operator in position space and vice versa in Quantum Mechanics. Taking the definition of the Fourier Transform as the starting point, we present a two parameter generalisation of the form of the momentum operator in position space followed by a generalisation of the momentum eigenfunctions and a few other results. It is…

When I say that the protesters were angry but not violent, I guess I should also say this:
In the sick imagination of white supremacy, for a Black or brown person to be angry •is• for them to be violent, by definition.
So when you hear people saying “they were violent,” those people are flat wrong — but they may also be describing something that is in fact completely real and completely consistent in their mind.

qa_user: User interactions on Q&A websites (2016)
Networks of interactions among users from four online Q&A sites: Stack Overflow, Math Overflow, Super User, and Ask Ubuntu. A directed edge (i,j) indicates a user i responded to user j's post. Edges are timestamped. For each Q&A site, four differently defined networks are provided, based on the definition of an edge: (i) a user answered a question, (ii) a user commented on a question, (iii) a user commented on an answer…

ambassador: Philippines Ambassador bombing (2000)
A temporal network representing snapshots of relationships among individuals directly or indirectly associated with Philippines Ambassador Residence Bombing 2000, Jakarta. Nodes are people, and an edge exists if they are associated with each other. Definition of the edge weight is unknown.
This network has 16 nodes and 69 edges.
Tags: Social, Offline, Weighted, Temporal

Here the addendum. Brown writes:
“There exists no coherent notion of what AI is or could be.”
There is in fact a perfectly coherent definition of AI — one that does not refute Brown’s point, but rather proves it.
2/

Here the addendum. Brown writes:
“There exists no coherent notion of what AI is or could be.”
There is in fact a perfectly coherent definition of AI — one that does not refute Brown’s point, but rather proves it.
2/

ambassador: Philippines Ambassador bombing (2000)
A temporal network representing snapshots of relationships among individuals directly or indirectly associated with Philippines Ambassador Residence Bombing 2000, Jakarta. Nodes are people, and an edge exists if they are associated with each other. Definition of the edge weight is unknown.
This network has 16 nodes and 4 edges.
Tags: Social, Offline, Weighted, Temporal

ambassador: Philippines Ambassador bombing (2000)
A temporal network representing snapshots of relationships among individuals directly or indirectly associated with Philippines Ambassador Residence Bombing 2000, Jakarta. Nodes are people, and an edge exists if they are associated with each other. Definition of the edge weight is unknown.
This network has 16 nodes and 13 edges.
Tags: Social, Offline, Weighted, Temporal

soc_net_comms: Networks with group metadata
Snapshots of LiveJournal, Friendster, Orkut, and YouTube online social networks, as well as DBLP and Amazon. Node metadata represents a post hoc definition of a 'community' that a node belongs to, derived from topical labels of the node or interest-based 'groups' that a node links to.
This network has 317080 nodes and 1049866 edges.
Tags: Online, Social, Collaboration, Informational, Relatedness, Unweighted, Metada…

soc_net_comms: Networks with group metadata
Snapshots of LiveJournal, Friendster, Orkut, and YouTube online social networks, as well as DBLP and Amazon. Node metadata represents a post hoc definition of a 'community' that a node belongs to, derived from topical labels of the node or interest-based 'groups' that a node links to.
This network has 317080 nodes and 1049866 edges.
Tags: Online, Social, Collaboration, Informational, Relatedness, Unweighted, Metada…