Tootfinder

This https://arxiv.org/abs/2502.03210 has been replaced.
initial toot: https://mastoxiv.page/@arX…

From Kernels to Features: A Multi-Scale Adaptive Theory of Feature Learning
Feature learning in neural networks is crucial for their expressive power and inductive biases, motivating various theoretical approaches. Some approaches describe network behavior after training through a change in kernel scale from initialization, resulting in a generalization power comparable to a Gaussian process. Conversely, in other approaches training results in the adaptation of the kernel to the data, involving directional changes to the kernel. The relationship and respective strength…

Interfacial instability of confined 3D active droplets
Bennett C. Sessa, Federico Cao, Robert A. Pelcovits, Thomas R. Powers, Guillaume Duclos
https://arxiv.org/abs/2506.17532

Interfacial instability of confined 3D active droplets
Instabilities of fluid-fluid interfaces are ubiquitous in passive soft matter. Adding activity to the interface or either fluid can dramatically change the stability of the interface. Using experiment and theory, we investigate the interfacial instability of a deformable 3D active nematic liquid crystal droplet in the isotropic phase surrounded by a passive fluid and confined between two parallel plates. Spontaneous active flows drive the growth of undulations along the active/passive interface…

Floquet-like theory and gauge transformations for general smooth dynamical systems
Giuseppe Gaeta, Sebastian Walcher
https://arxiv.org/abs/2506.14982 https…

Floquet-like theory and gauge transformations for general smooth dynamical systems
The classical Floquet theory allows to map a time-periodic system of linear differential equations into an autonomous one. By looking at it in a geometrical way, we extend the theory to a class of non-autonomous non-periodic equations. This is obtained by considering a change of variables which depends on time in a non-trivial way, i.e. introducing gauge transformations, well known in fundamental Physics and Field Theory -- but which seems to have received little attention in this context.

Classically psh and pluriharmonic functions on Berkovich spaces
Walter Gubler, Joseph Rabinoff
https://arxiv.org/abs/2506.13548 https://

Classically psh and pluriharmonic functions on Berkovich spaces
First we extend the theory of subharmonic functions on smooth strictly $k$-analytic curves from Thuillier's thesis to the case of possibly singular analytic curves over a non-archimedean field. Classically psh functions are then defined as in complex geometry by using pullbacks to analytic curves (and requiring compatibility with base change). We give various properties of classically psh functions including a local and a global maximum principle. As a consequence, we show that the space of plu…

Mechanisms of information communication and market price movements. The case of SP 500 market
Inga Ivanova, Grzegorz Rzadkowski
https://arxiv.org/abs/2505.09625

Mechanisms of information communication and market price movements. The case of SP 500 market
In this paper we analyze how market prices change in response to information processing among the market participants and how non-linear information dynamics drive market price movement. We analyze historical data of the SP 500 market for the period 1950 -2025 using the logistic Continuous Wavelet Transformation method. This approach allows us to identify various patterns in market dynamics. These patterns are conceptualized using a new theory of reflexive communication of information in a mark…

This https://arxiv.org/abs/2403.17490 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Reconstruction of hypersurfaces from their invariants
Let $K$ be a field of characteristic $0$. We present an explicit algorithm that, given the invariants of a generic homogeneous polynomial $f$ under the linear action of $\mathrm{GL}_n$ or $\mathrm{SL}_n$, returns a polynomial differing from $f$ only by a linear change of variables with coefficients in a finite extension of $K$. Our approach uses the theory of covariants and the Veronese embeddings to characterize the linear equivalence class of a homogeneous polynomial through equations whose c…

The liberal obsession with optics serves the right and persuades no one. There is literally an active ethnic cleansing happening in the US right now, and the only thing that matters is making that as hard as possible to carry out.
Anarchists destroying intelligence assets saves lives. Every escooter thrown at a cop car is one less escort for a goon too afraid to kidnap random brown people without being flanked by a branch full of bad apples. Spray paint is not violence. Vandalism is not violence. Community self defense in all forms is legitimate.
Make no mistake, these raids are about changing demographics. Demographic trends have been shifting blue for a long time, and the right has, for a long time, been blaming "white replacement." Conspiracy theory aside, Democrats have also been relying on the growth of black and brown voters as a block. The nuances of whiteness as an identity are lost on the current administration and their supporters. They see that "white people will be a minority by 2050" and equate that with the "end of Western Civilization."
The only way to "save Western Civilization" is to change those demographics. Forced birth and forced removal are two sides of the same white nationalist objective. Of course they can't have due process, because they need to be able to kidnap anyone who they see as a threat to their demographic future.
They don't care about optics. The plan is to murder away any threat and flood everyone else with propaganda. There is no mythical middle. There's no one unconvinced. They know this, but they win when democrats buy that myth and save the police the work of policing the protests.
If your protest is 90% "peaceful," they'll take pictures of the 10% that isn't. If it's 99% peaceful, they'll shoot rubber bullets and teargas until someone throws a brick and take 100 pictures from a dozen angles. If its 100% "peaceful" and no one can be provoked, they'll generate pictures with AI or photoshop like they did during the George Floyd uprising and the pictures from the CHOP/CHAZ. Do you have literally no memory?
#USPol #FiftyFiftyOne #50501movenent #resistance #NoKingsDay #NoKingsDayOfAction

This https://arxiv.org/abs/2503.08894 has been replaced.
initial toot: https://mastoxiv.page/@arXi…

Modeling and computation of the effective elastic behavior of parallelogram origami metamaterials
Origami metamaterials made of repeating unit cells of parallelogram panels joined at folds dramatically change their shape through a collective motion of their cells. Here we develop an effective elastic model and numerical method to study the large deformation response of these metamaterials under a broad class of loads. The model builds on an effective plate theory derived in our prior work [64]. The theory captures the overall shape change of all slightly stressed parallelogram origami defor…

Warum ich bei der Klimakrise keine Hoffnung mehr habe? Weil das Wort Kapitalismus nicht mal mehr erwähnt wird.
Was soll das?
https://www.instagram.com/p/DKR8nWlRtZi/

Quarks on Instagram: "🌍🌱 Warum tun wir uns gerade mit dem Klimaschutz so schwer? Wird Klimaschutz immer mehr zum Luxus? . 2️⃣0️⃣1️⃣9️⃣ Erinnert ihr euch noch an 2019? Das Jahr war ein Wendepunkt der globalen Klimabewegung. Millionen Menschen gingen weltweit auf die Straße. Schüler:innen, Studierende, aber auch Wissenschaftler:innen (“Scientists for Future”) demonstrierten dabei für Klimaschutz, die Einhaltung des 1,5-Grad-Ziels des Pariser Abkommens und ein schnelles Ende der Nutzung fossiler Energien. Die Proteste rückten das Klimathema ins Zentrum der weltweiten Aufmerksamkeit. Doch das ist sechs Jahre her. . 🇩🇪🌱 Aktuell scheint den Menschen (in Deutschland) Klimaschutz und Nachhaltigkeit nicht mehr so wichtig, Konsument:innen haben immer seltener Schuldgefühle, wenn sie sich nicht umweltfreundlich verhalten. 2019 gaben das in einer Umfrage eines Marktforschungsunternehmens (NIQ) 30 Prozent an. Im Jahr 2024 waren es nur noch 22 Prozent. 2️⃣0️⃣2️⃣5️⃣ Immerhin: Der Nachhaltigkeitsindex zeigt seit April 2025 wieder einen leichten Aufwärtstrend, liegt aber weit unter den Werten von 2019. Die Menschen seien pragmatischer geworden, so die Umfrage: Klimaschutz dürfe nicht zu viel kosten und dürfe nicht allzu unbequem sein, finden die Konsument:innen. . Unsere Quellen, u.a.: NielsenIQ: „NIQ Consumer Life“-Langzeitstudie: So shoppen (und leben) wir anders als 2019 Osberghaus et al. (2025): The intention-behavior gap in climate change adaptation: Evidence from longitudinal survey data Ajzen I. (1985) From Intentions to Actions: A Theory of Planned Behavior"
2,385 likes, 168 comments - quarks.de on May 30, 2025: "🌍🌱 Warum tun wir uns gerade mit dem Klimaschutz so schwer? Wird Klimaschutz immer mehr zum Luxus? . 2️⃣0️⃣1️⃣9️⃣ Erinnert ihr euch noch an 2019? Das Jahr war ein Wendepunkt der globalen Klimabewegung. Millionen Menschen gingen weltweit auf die Straße. Schüler:innen, Studierende, aber auch Wissenschaftler:innen (“Scientists for Future”) demonstrierten dabei für Klimaschutz, die Einhaltung des 1,5-Grad-Ziels des …

TPHE-Graphene: A First-Principles Study of a New 2D Carbon Allotrope for Hydrogen Storage
Jos\'e A. S. Laranjeira, Nicolas F. Martins, Kleuton A. L. Lima, Luis A. Cabral, Luiz A. Ribeiro, Douglas S. Galv\~ao, Julio R. Sambrano
https://arxiv.org/abs/2506.00609

TPHE-Graphene: A First-Principles Study of a New 2D Carbon Allotrope for Hydrogen Storage
The shift from fossil fuels to renewable energy sources is essential for reducing global carbon emissions and addressing climate change. Developing advanced materials for efficient hydrogen storage enables sustainable energy solutions in this context. Herein, we propose sodium-decorated TPHE-graphene as a high-performance two-dimensional material for hydrogen storage. Density functional theory (DFT) calculations demonstrate that TPHE-graphene exhibits dynamical, thermal, energetic, and mechanic…

Warum ich bei der Klimakrise keine Hoffnung mehr habe? Weil das Wort Kapitalismus nicht mal mehr erwähnt wird.
Was soll das?
https://www.instagram.com/p/DKR8nWlRtZi/

Quarks on Instagram: "🌍🌱 Warum tun wir uns gerade mit dem Klimaschutz so schwer? Wird Klimaschutz immer mehr zum Luxus? . 2️⃣0️⃣1️⃣9️⃣ Erinnert ihr euch noch an 2019? Das Jahr war ein Wendepunkt der globalen Klimabewegung. Millionen Menschen gingen weltweit auf die Straße. Schüler:innen, Studierende, aber auch Wissenschaftler:innen (“Scientists for Future”) demonstrierten dabei für Klimaschutz, die Einhaltung des 1,5-Grad-Ziels des Pariser Abkommens und ein schnelles Ende der Nutzung fossiler Energien. Die Proteste rückten das Klimathema ins Zentrum der weltweiten Aufmerksamkeit. Doch das ist sechs Jahre her. . 🇩🇪🌱 Aktuell scheint den Menschen (in Deutschland) Klimaschutz und Nachhaltigkeit nicht mehr so wichtig, Konsument:innen haben immer seltener Schuldgefühle, wenn sie sich nicht umweltfreundlich verhalten. 2019 gaben das in einer Umfrage eines Marktforschungsunternehmens (NIQ) 30 Prozent an. Im Jahr 2024 waren es nur noch 22 Prozent. 2️⃣0️⃣2️⃣5️⃣ Immerhin: Der Nachhaltigkeitsindex zeigt seit April 2025 wieder einen leichten Aufwärtstrend, liegt aber weit unter den Werten von 2019. Die Menschen seien pragmatischer geworden, so die Umfrage: Klimaschutz dürfe nicht zu viel kosten und dürfe nicht allzu unbequem sein, finden die Konsument:innen. . Unsere Quellen, u.a.: NielsenIQ: „NIQ Consumer Life“-Langzeitstudie: So shoppen (und leben) wir anders als 2019 Osberghaus et al. (2025): The intention-behavior gap in climate change adaptation: Evidence from longitudinal survey data Ajzen I. (1985) From Intentions to Actions: A Theory of Planned Behavior"
2,385 likes, 168 comments - quarks.de on May 30, 2025: "🌍🌱 Warum tun wir uns gerade mit dem Klimaschutz so schwer? Wird Klimaschutz immer mehr zum Luxus? . 2️⃣0️⃣1️⃣9️⃣ Erinnert ihr euch noch an 2019? Das Jahr war ein Wendepunkt der globalen Klimabewegung. Millionen Menschen gingen weltweit auf die Straße. Schüler:innen, Studierende, aber auch Wissenschaftler:innen (“Scientists for Future”) demonstrierten dabei für Klimaschutz, die Einhaltung des 1,5-Grad-Ziels des …