Tootfinder

The completed Kirillov model and local-global compatibility for functions on Igusa varieties
Sean Howe
https://arxiv.org/abs/2506.24089 https://

The completed Kirillov model and local-global compatibility for functions on Igusa varieties
We describe the cuspidal functions $\mathbb{V}_b^{\mathrm{cusp}}$ on the ordinary Caraiani-Scholze Igusa variety for $\mathrm{GL}_2$ as a completion of the smooth Kirillov model for classical cuspidal modular forms, and identify a variant of Hida's ordinary $p$-adic modular forms with the coinvariants of an action of $\tildeμ_{p^\infty}$ on $\mathbb{V}_b^{\mathrm{cusp}}$. As a consequence of these results, we establish a weak local-global compatibility theorem for eigenspaces in $\mathbb{V}_b^…

The effect of local magnetic fields in quiet regions of stellar atmospheres simulated with MANCHA
Andrea Perdomo Garc\'ia, Nikola Vitas, Elena Khomenko, Manuel Collados
https://arxiv.org/abs/2507.00636

The effect of local magnetic fields in quiet regions of stellar atmospheres simulated with MANCHA
Our aim is to characterize the effects of the local magnetic fields in quiet regions of stellar atmospheres. We compute magneto-hydrodynamic and purely hydrodynamic simulations of G2V, K0V and M2V star. The magnetic simulations are started from the hydrodynamical ones, adding the Biermann battery term in the induction equation to produce a magnetic seed, that is enhanced by the action of the small-scale dynamo. Once the magnetic field is saturated, we compare the simulations with and without ma…

Computational Analysis of Climate Policy
Carolyn Hicks
https://arxiv.org/abs/2506.22449 https://arxiv.org/pdf/2506.22449

Computational Analysis of Climate Policy
This thesis explores the impact of the Climate Emergency movement on local government climate policy, using computational methods. The Climate Emergency movement sought to accelerate climate action at local government level through the mechanism of Climate Emergency Declarations (CEDs), resulting in a series of commitments from councils to treat climate change as an emergency. With the aim of assessing the potential of current large language models to answer complex policy questions, I first bu…

Impact of the Social Action, Responsibility and Heroism Act 2015
"If a standard of care in relation to risk assessment which is too high is imposed [...], people may be put off contributing for free or at all. Insurance premiums will rise. Volunteers are not looking to be sued, they are looking to help others"

Law firm hails "important judgement" for local cycling events after judge throws out claim club was liable for driver seriously injuring time trial participant
High Court judge rules negligent driver solely at fault and club's risk assessment was carried out "properly and sufficiently", the ruling said to provide reassurance and "sensible guidance for those who give their free time to help organise events"

The local supersymmetries of a stack of branes
Rapha\"el Dulac, Yixuan Li
https://arxiv.org/abs/2507.18702 https://arxiv.org/pdf/2507.18702

The local supersymmetries of a stack of branes
Local supersymmetries have been a guiding principle to construct smooth horizonless supergravity solutions. By computing brane densities from the brane low-energy effective action, we classify which BPS solutions have the maximal local supersymmetry structure, with sixteen supersymmetries. We find that whenever the gauge group is broken to its maximal abelian subgroup, the brane construction becomes purely geometric and one can identify the preserved local supercharges. This class of solution i…

Mom of teen detained in Arleta announces legal action – NBC Los Angeles
https://www.nbclosangeles.com/news/local/legal-claim-arleta-teen-detained/3770321/

Connecting mean-field theory with dynamo simulations
Petri J. K\"apyl\"a (KIS)
https://arxiv.org/abs/2507.00632 https://arx…

Connecting mean-field theory with dynamo simulations
Mean-field dynamo theory, describing the evolution of large-scale magnetic fields, has been the mainstay of theoretical interpretation of magnetism in astrophysical objects such as the Sun for several decades. More recently, three-dimensional magnetohydrodynamic simulations have reached a level of fidelity where they capture dynamo action self-consistently on local and global scales without resorting to parametrization of unresolved scales. Recent global simulations also capture many of the obs…

Good Morning #Canada
Summer is over, and this morning, approximately 5.5 million primary and secondary Canadian students go back to school. Lunches are packed, stylish new backpacks have a light load, and sneakers are fashionably untied. Stay alert for school busses, crosswalks, and that speed camera newly installed outside your local school. Yes, it's hectic today as you relearn how to get your kids out the door on time. Enjoy the change of pace because soon you'll be shoveling snow.
#CanadaIsAwesome #BackToSchool #WinterIsComing
https://www150.statcan.gc.ca/t1/tbl1/en/tv.action?pid=3710010901

@… Would love to see this integrate with GitHub more, particularly the classroom functionality.
I’ve spent a good few hours on and off over the years helping one of our local CompSci teachers with all of the work around “How do I go from an exercise I want students to complete, to an actual assignment in GH Classroom, a template repo, and a GH Action pip…

Deep Extragalactic VIsible Legacy Survey (DEVILS): Satellite Quenching at Intermediate Redshift
L. J. M. Davies, M. F. Fuentealba-Fuentes, R. J. Wright, M. Bravo, S. Wagh, M. Siudek
https://arxiv.org/abs/2507.20822

Deep Extragalactic VIsible Legacy Survey (DEVILS): Satellite Quenching at Intermediate Redshift
Determining the processes by which galaxies transition from a star-forming to a quiescent state (quenching) is paramount to our understanding of galaxy evolution. One of the key mechanisms by which this takes place is via a galaxy's interactions with a local, over-dense environment (satellite or environmental quenching). In the very local Universe, we see these processes in action, and can also observe their effects via the distribution of satellite galaxy properties. However, extending similar…

Distributed Detection of Adversarial Attacks in Multi-Agent Reinforcement Learning with Continuous Action Space
Kiarash Kazari, Ezzeldin Shereen, Gy\"orgy D\'an
https://arxiv.org/abs/2508.15764

Distributed Detection of Adversarial Attacks in Multi-Agent Reinforcement Learning with Continuous Action Space
We address the problem of detecting adversarial attacks against cooperative multi-agent reinforcement learning with continuous action space. We propose a decentralized detector that relies solely on the local observations of the agents and makes use of a statistical characterization of the normal behavior of observable agents. The proposed detector utilizes deep neural networks to approximate the normal behavior of agents as parametric multivariate Gaussian distributions. Based on the predicted…

Organize on Your Home Turf
Fascists depend on you believing you're alone and powerless.
But when individuals come together, we create real power.
If you're ready to join a local Indivisible group or start your own local group to fight against the Trump agenda,
fill out the form below.
Our team will connect you with resources, guidance, and others nearby who are eager to take action.

Designing Doable and Locally-adapted Action Cards for an Interactive Tabletop Game To Support Bottom-Up Flood Resilience
Linda Hirsch, James Fey, Katherine Isbister
https://arxiv.org/abs/2508.16480

Designing Doable and Locally-adapted Action Cards for an Interactive Tabletop Game To Support Bottom-Up Flood Resilience
Serious games can support communities in becoming more flood resilient. However, the process of identifying and integrating locally relevant and doable actions into gameplay is complex and underresearched. We approached the challenge by collaborating with a community-led education center and applying an iterative and participatory design process of identifying and defining actions that may increase local applicability and relevance. The process comprised a field observation, two expert focus gr…

"Peatland Rewilding: Finnish Community Turns Abandoned Mine into Vibrant Bird Sanctuary"
#Finland #Peatland #Environment

Peatland Rewilding: Finnish Community Turns Abandoned Mine into Vibrant Bird Sanctuary | Happy Eco News
Finland's peatland rewilding project transforms former mining wasteland into a wildlife sanctuary, home to over 190 bird species. A local community action project creates a carbon-storing wetland ecosystem within one year.

We proudly share our Call for Cases for the 2nd #stsing conference, hosted in #Bochum. A case-based format is a way of conferencing that is local, small, and oriented towards the concrete.
Make your case, fit your case, hop on.

What does the public want their local government to hear? A data-driven case study of public comments across the state of Michigan
Chang Ge, Justine Zhang, Haofei Xu, Yanna Krupnikov, Jenna Bednar, Sabina Tomkins
https://arxiv.org/abs/2507.18431

What does the public want their local government to hear? A data-driven case study of public comments across the state of Michigan
City council meetings are vital sites for civic participation where the public can speak directly to their local government. By addressing city officials and calling on them to take action, public commenters can potentially influence policy decisions spanning a broad range of concerns, from housing, to sustainability, to social justice. Yet studies of these meetings have often been limited by the availability of large-scale, geographically-diverse data. Relying on local governments' increasing …

After News Media Corporation announced the closure of 31 outlets in five states on August 6, a publishing group bought 8 papers in WY and another bought 4 in SD (Sarah Raza/Associated Press)
https://apnews.com/article/rural-newsp…

Closed newspapers in Wyoming and South Dakota are saved as buyers swoop in
A dozen newspapers in Wyoming and South Dakota are set to publish again after buyers stepped in to keep the communities from becoming news deserts where little or no local media remains. This quick action is notable in an industry where, according to a 2024 report from the Medill School of Journalism, more than two newspapers close each week. Illinois-based News Media Corporation had announced the closure of 31 outlets in five states. Within two weeks, new buyers in Wyoming and North Carolina p…

Almost-concordance of knots in aspherical 3-manifolds
Ryan Stees
https://arxiv.org/abs/2508.14638 https://arxiv.org/pdf/2508.14638

Almost-concordance of knots in aspherical 3-manifolds
In this paper, we study topological concordance modulo local knotting, or almost-concordance, of knots in 3-manifolds $M\neq S^3$. A. Levine, Celoria (arXiv:1602.05476v4), and Friedl-Nagel-Orson-Powell (arXiv:1611.09114v2) conjecture that, absent the presence of an embedded dual 2-sphere, any free homotopy class $x$ of knots in $M$ contains infinitely many concordance classes modulo the action of the concordance group of knots in $S^3$ by local knotting. We develop a method for confirming this …

Detection of non-absolute separability in quantum states and channels through moments
Bivas Mallick, Saheli Mukherjee, Nirman Ganguly, A. S. Majumdar
https://arxiv.org/abs/2508.15700

Detection of non-absolute separability in quantum states and channels through moments
In quantum information and computation, generation of entanglement through unitary gates remains a significant and active area of research. However, there are states termed as absolutely separable, from which entanglement cannot be created through any non-local unitary action. Thus, from a resource-theoretic perspective, non-absolutely separable states are useful as they can be turned into entangled states using some appropriate unitary gates. In this work, we propose an efficient method to det…

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No matter the results, you will also be added automatically to the Run for Something candidate pipeline — check your inbox in the next few days for next steps.
Note: Data includes offices on the ballot in 2025 and 2026. Updates will be made throughout the year as additional information is available.

Where Can I Run — Run for Something Action Fund
Use this tool to find out when, where and how you can run for office.

Local communities are leading the way in climate action! From native plantings to electric equipment, these inspiring initiatives show the power of community engagement in addressing climate change. #climatechange #climatesolutions

Readers Sent Us Hundreds of Local Climate Solutions
As part of our 50 States, 50 Fixes series, more than 2,400 Times readers wrote in to tell us about climate action in their communities.

A Homothetic Gauge Theory
Fereidoun Sabetghadam
https://arxiv.org/abs/2507.06153 https://arxiv.org/pdf/2507.06153

A Homothetic Gauge Theory
While the principle of local gauge invariance forms the bedrock of modern physics, the symmetry of scale invariance has traditionally been treated on a different footing. This paper develops a \emph{homothetic gauge theory} (HGT) that elevates local scale transformations to a genuine gauge symmetry, placing them within the same geometric framework as conventional interactions. We introduce a novel mathematical structure based on an extended vector bundle that linearizes the action of local scal…

Deformations of Standard Locally Homogeneous Spaces
Kazuki Kannaka, Toshiyuki Kobayashi
https://arxiv.org/abs/2507.14832 https://arxi…

Deformations of Standard Locally Homogeneous Spaces
Let $X=G/H$ be a homogeneous space, where $G \supset H$ are reductive Lie groups. We ask: in the setting where $Γ\backslash G/H$ is a standard quotient, to what extent can the discrete subgroup $Γ$ be deformed while preserving the proper discontinuity of the $Γ$-action on $X$? We provide several classification results, including: conditions under which local rigidity holds for compact standard quotients $Γ\backslash X$; criteria for when a standard quotient can be deformed into a nonstand…

CueLearner: Bootstrapping and local policy adaptation from relative feedback
Giulio Schiavi, Andrei Cramariuc, Lionel Ott, Roland Siegwart
https://arxiv.org/abs/2507.04730

CueLearner: Bootstrapping and local policy adaptation from relative feedback
Human guidance has emerged as a powerful tool for enhancing reinforcement learning (RL). However, conventional forms of guidance such as demonstrations or binary scalar feedback can be challenging to collect or have low information content, motivating the exploration of other forms of human input. Among these, relative feedback (i.e., feedback on how to improve an action, such as "more to the left") offers a good balance between usability and information richness. Previous research has shown th…

Wavelet Coorbit Spaces over Local Fields
Kumar Abhinav, Hartmut F\"uhr, Qaiser Jahan
https://arxiv.org/abs/2508.07242 https://arxiv.org/pdf/2508.07242…

Wavelet Coorbit Spaces over Local Fields
This paper studies wavelet coorbit spaces on disconnected local fields $K$, associated to the quasi-regular representation of $G = K \rtimes K^*$ acting on $L^2(K)$. We show that coorbit space theory applies in this context, and identify the homogeneous Besov spaces $\dot{B}_{α,s,t}(K)$ as coorbit spaces. We identify a particularly convenient space $\mathcal{S}_0(K)$ of wavelets that give rise to tight wavelet frames via the action of suitable, easily determined discrete subsets $R \subset G$,…

On the local representation theory of symmetric groups
Greta Tendi
https://arxiv.org/abs/2506.04773 https://arxiv.org/pdf/2506.04773

On the local representation theory of symmetric groups
Given a Sylow $p$-subgroup $P$ of a symmetric group, we describe the action of its normalizer on $\mathrm{Irr}(P)$. To this end, we establish a one-to-one correspondence between the irreducible characters of $P$ and certain equivalence classes of explicitly defined functions, which are also naturally suited to describing the Galois action.

How can we measure the information created by natural selection?
Joel R. Peck, David Waxman
https://arxiv.org/abs/2508.13373 https://arxiv.org/pdf/2508.133…

How can we measure the information created by natural selection?
Natural selection can create information. In particular, because of the action of natural selection, we can often learn something about an environment by examining local organisms, and vice versa. For example, the characteristics of a cactus suggest that the local environment is relatively dry, and if a natural terrestrial environment is dry, then we will generally have an enhanced probability of finding drought-resistant plants (like cacti). Here, we propose a measure that can be used to quant…

There was no cake left in the rain, just a sunny day gone dark as #Drumpf military men mount horseback, don facemasks and occupy #MacArthurPark for show of force, irking #LA mayor

Federal Agents March Through L.A. Park, Spurring Local Outrage
Federal officials said it was an immigration enforcement operation, though it was unclear if anyone had been arrested. “It’s the way a city looks before a coup,” Mayor Karen Bass said as she condemned the action.

Demonstrators gathered Thursday evening in more than 30 protests planned across Colorado as part of a
“Good Trouble Lives On”
nationwide day of action.
The anti-Trump demonstrations marked the fifth anniversary of the death of
civil rights leader and former Rep.
John Lewis of Georgia.
The Colorado protests
were led by organizations including Colorado 50501
and Solidarity Warriors,
and local progressive groups.
Organizers called for…

Tensor perturbations in higher derivative gravity theories in $D$ dimensions
Ercan Kilicarslan
https://arxiv.org/abs/2506.10563 https://

Tensor perturbations in higher derivative gravity theories in $D$ dimensions
We study tensor perturbations of the ghost-free generic non-local gravity theory constructed infinite series of higher derivative terms in $D$ dimensions. The infinite series of higher derivative terms are encoded by form factors, the forms of which can be restricted by requiring that the action remains perturbatively free of ghosts and tachyons around maximally symmetric backgrounds for transverse traceless fluctuations. To demonstrate this, we obtain field equations for AdS plane wave metric …

Reinforcement learning in densely recurrent biological networks
Miles Walter Churchland, Jordi Garcia-Ojalvo
https://arxiv.org/abs/2508.09618 https://arxiv…

Reinforcement learning in densely recurrent biological networks
Training highly recurrent networks in continuous action spaces is a technical challenge: gradient-based methods suffer from exploding or vanishing gradients, while purely evolutionary searches converge slowly in high-dimensional weight spaces. We introduce a hybrid, derivative-free optimization framework that implements reinforcement learning by coupling global evolutionary exploration with local direct search exploitation. The method, termed ENOMAD (Evolutionary Nonlinear Optimization with Mes…

Virtual Polarization Elements for Spatially Varying Jones Matrix Transformations on a Free-Space Plane
Mingyue Wang (Department of Physics, Xiamen University, Xiamen, China), Jiayuan Wang (Department of Physics, Xiamen University, Xiamen, China, Shenzhen Research Institute of Xiamen University, Shenzhen, China)
https://arxiv.org…

Virtual Polarization Elements for Spatially Varying Jones Matrix Transformations on a Free-Space Plane
Precise control over the spatial and polarization properties of light is foundational for advanced photonic systems, yet most conventional approaches are constrained to local, contact-based manipulation at physical interfaces. To overcome these constraints, here we introduce a fundamentally new framework for action-at-a-distance polarization control using virtual polarization elements (VPEs). VPEs apply prescribed local Jones matrix transformations between an input field at the modulation plane…

This https://arxiv.org/abs/2505.04316 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

On local fields invariant under the action of topological defects
In the context of rational conformal field theories (RCFT) we look into the problem of constructing and classifying pairs consisting of a local operator and a topological defect which commutes or anticommutes with it. We discuss the bulk and boundary versions of the problem. In the latter one considers a conformal boundary condition, a boundary operator on it and a junction with a topological defect. In the case of the charge conjugation modular invariant commuting configurations in each proble…

Here are the three primary kinds of community-based events we’ll be sponsoring during 31 Days of Action:

Open/community lab meetings over Zoom or live-streamed lab tours/demos

Teach-ins at local community centers, churches, parks, basically anywhere that’s not a college campus

Stand Up For Science tabling and demos that include “Ask a Scientist” booths,
pond water under a microscope,
strawberry DNA extraction,
egg drop competitions, …

SUFS 31 Days of Action Guidebook
🧬 WHAT IS STAND UP FOR SCIENCE? Stand Up for Science (SUFS) is a 501(c)(4) non-profit organization born from the rallies held in cities throughout the United States and around the world on March 7th, 2025. We believe that science is a public good that benefits everyone, and we’re leading...

Finite Nonlocal Holomorphic Unified Quantum Field Theory
J. W. Moffat, E. J. Thompson
https://arxiv.org/abs/2507.14203 https://arxiv.org/pdf/2507.14203

Finite Nonlocal Holomorphic Unified Quantum Field Theory
In this paper the non-local finite quantum-gravity framework is incorporated into the Complex non-Riemannian Holomorphic Unified Field Theory formulated on a complexified four-dimensional manifold. By introducing entire-function regulators $F(\Box) = \exp\!\bigl(\Box / M_*^2\bigr)$ into the holomorphic Einstein-Hilbert action, we achieve perturbative UV finiteness at all loop orders, while preserving BRST invariance and holomorphic gauge symmetry. We derive the modified gauge-gravity coupling s…

Finitely Correlated States Driven by Topological Dynamics
Eric B. Roon, Jeffrey H. Schenker
https://arxiv.org/abs/2507.07287 https://…

Finitely Correlated States Driven by Topological Dynamics
Let $(Ω, ¶)$ be a standard probability space and let $\vartheta:Ω\to Ω$ be a measure preserving ergodic homeomorphism. Let $\mathcal{A}$ be a $C^*$-algebra with a unit and let $\mathcal{A}_{\mathbb{Z}}$ be the quasi-local algebra associated to the spin chain with one-site algebra $\mathcal{A}$. Equip $\mathcal{A}_{\mathbb{Z}}$ with the group action of translation by $k$-units, $τ_k\in Aut(\mathcal{A}_{\mathbb{Z}})$ for $k\in \mathbb{Z}$. We study the problem of finding a disordered matrix …

Trump sent the National Guard to Los Angeles at a time when state and local officials said they had protests there under control.

The move reflects an increasingly evident pattern of his presidency:
Trump declares an emergency or crisis where many others do not see one,
enabling him to take sweeping actions,
rally supporters and fight on political terrain he finds favorable.

Trump’s declaration of an economic emergency in April enabled sweeping tariffs.
…

For Trump, seizing emergency powers has become central to governing
President Donald Trump has declared emergencies in various areas. He says strong action is needed; critics say the emergencies don’t exist.

In Washington D.C. the National Guard arrived at their headquarters Tuesday
-- For many residents, the prospect of federal troops surging into neighborhoods represented an alarming violation of local agency.
It echoes uncomfortable historical chapters when politicians used racism to paint historically or predominantly Black cities and neighborhoods with bigoted narratives to shape public opinion and justify aggressive police action.

Trump's DC police takeover echoes history of racist narratives about crime
President Donald Trump's rhetoric in his federal takeover of Washington police echoes that of conservative politicians going back decades who've denounced American cities with majority non-white populations or progressive leaders as crime-ridden and in need of outside intervention. The Republican president has taken control of Washington’s law enforcement and ordered National Guard troops to deploy onto the streets of the nation’s capital. Guard troops arrived at their Washington headquarte…

Strongly Coupled Quantum Field Theory in Anti-de Sitter Spacetime
Jon\'a\v{s} Dujava
https://arxiv.org/abs/2507.07111 https://arx…

Strongly Coupled Quantum Field Theory in Anti-de Sitter Spacetime
We introduce the framework of Quantum Field Theories in general backgrounds through the lens of the path integral, in the formulation known as the Functorial QFT. With the aim of studying properties of strongly coupled QFTs, we present key concepts and techniques such as the effective action, renormalization group flow, and the 1/N expansion. At the fixed points of the RG flow we typically find Conformal Field Theories, which are symmetric under local rescaling of the metric. Among other thin…

The Role of Berry Phases in the QCD Vacuum Structure
J. Gamboa
https://arxiv.org/abs/2506.00078 https://arxiv.org/pdf/2506.00078

The Role of Berry Phases in the QCD Vacuum Structure
We revisit the origin of the vacuum angle $θ$ in QCD using the adiabatic approximation combined with Fujikawa's method. By implementing a local chiral transformation and selecting a constant parameter $α(x) = θ$, we show that the QCD $θ$-term emerges naturally in the effective action. This construction provides a non-perturbative interpretation of the axial anomaly and highlights the role of the adiabatic gauge condition in isolating the topological sector of the theory. As a consequence, t…

This https://arxiv.org/abs/2104.03898 has been replaced.
link: https://scholar.google.com/scholar?q=a

A New Form of Soft Supersymmetry Breaking?
Starting with a supersymmetric U(N)xU(N) gauge theory built in N=1 superspace, a nonsupersymmetric theory is obtained by ``twisting'' the gauginos into a different representation of the group than the gauge bosons. Despite the fact that this twisting breaks supersymmetry, it is still possible to construct an action that is holomorphic and invariant to local ``twisted'' gauge transformations in superspace. It is conjectured that these two properties may allow the theory to be free of quadratic d…