Tootfinder

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.

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…

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…

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.

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.

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…

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…

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^…

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…

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This https://arxiv.org/abs/2403.06767 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Continuity and equivariant dimension
We study the local-triviality dimensions of actions on $C^*$-algebras, which are invariants developed for noncommutative Borsuk-Ulam theory. While finiteness of the local-triviality dimensions is known to guarantee freeness of an action, we show that free actions need not have finite weak local-triviality dimension. Moreover, the local-triviality dimensions of a continuous field may be greater than those of its individual fibers, and the dimensions may fail to vary continuously across the fiber…

We went to see the new #MissionImpossible today. I spent the whole thing thinking Hayley Atwell was Kate Beckinsale, which really shows my age. I'm not really an action film girl but I like these. A couple of the trailers looked good, esp a Liam Neeson remake of Naked Gun 🍭
Edited to add we're seeing The Salt Path soon and a showing of 2014's Pride at a local indie cine…

Pride (2014 film) - Wikipedia

This https://arxiv.org/abs/2408.02383 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

A Novel Stabilizer-based Entanglement Distillation Protocol for Qudits
Entanglement distillation, the process of converting weakly entangled states into maximally entangled ones using Local Operations and Classical Communication (LOCC), is pivotal for robust entanglement-assisted quantum information processing in error-prone environments. A construction based on stabilizer codes offers an effective method for designing such protocols. By analytically investigating the effective action of stabilizer protocols for systems of prime dimension $d$, we establish a stand…

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…

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…

This https://arxiv.org/abs/2310.14134 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Endomorphism algebras over commutative rings and torsion in self tensor products
Let $R$ be a commutative Noetherian local ring. We study tensor products involving a finitely generated $R$-module $M$ through the natural action of its endomorphism ring. In particular, we study torsion properties of self tensor products in the case where $\operatorname{End}_R(M)$ has an $R^*$-algebra structure, and prove that if $M$ is indecomposable, then $M \otimes_{\operatorname{End}_R(M)} M$ must always have torsion in this case under mild hypotheses.

"Anti-Net Zero Reform Mayor Andrea Jenkyns Urges Offshore Wind Investment"
#UK #UnitedKingdom #Energy #WindTurbines

Anti-Net Zero Reform Mayor Andrea Jenkyns Urges Offshore Wind Investment
A Reform UK mayor who claims “net zero madness” is “bankrupting Britain” has called for investment in an offshore wind project “to boost growth” in the local economy. Dame Andrea Jenkyns, who was elected as Greater Lincolnshire Mayor in the 1 May local elections, has been a vocal opponent of climate action and renewable energy […]

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 …

This https://arxiv.org/abs/2502.17257 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qbi…

What is a chemostat? Insights from hybrid dynamics and stochastic thermodynamics
At the microscopic scale, open chemical reaction networks are described by stochastic reactions that follow mass-action kinetics and are coupled to chemostats. We show that closed chemical reaction networks -- with specific stoichiometries imposed by mass-action kinetics -- behave like open ones in the limit where the abundances of a subset of species become macroscopic, thus playing the role of chemostats. We prove that this limit is thermodynamically consistent by recovering the local detaile…

This https://arxiv.org/abs/2310.14134 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Endomorphism algebras over commutative rings and torsion in self tensor products
Let $R$ be a commutative Noetherian local ring. We study tensor products involving a finitely generated $R$-module $M$ through the natural action of its endomorphism ring. In particular, we study torsion properties of self tensor products in the case where $\operatorname{End}_R(M)$ has an $R^*$-algebra structure, and prove that if $M$ is indecomposable, then $M \otimes_{\operatorname{End}_R(M)} M$ must always have torsion in this case under mild hypotheses.

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…