Tootfinder

James Cook 'disconnected' from Bills organization amid contract dispute, details on what's next

https://www.cbssports.com/nfl/news/james-c

This https://arxiv.org/abs/2506.04319 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

The Nonperturbative Hilbert Space of Quantum Gravity With One Boundary
We discuss a basis for the nonperturbative Hilbert space of quantum gravity with one asymptotic boundary. We use this basis to show that the Hilbert space for gravity with two disconnected boundaries factorizes into a product of two copies of the single boundary Hilbert space.

Scattering theory on Riemann surfaces I: Schiffer operators, cohomology, and index theorems
Eric Schippers, Wolfgang Staubach
https://arxiv.org/abs/2506.08160

Scattering theory on Riemann surfaces I: Schiffer operators, cohomology, and index theorems
We consider a compact Riemann surface $\mathscr{R}$ with a complex of non-intersecting Jordan curves, whose complement is a pair of Riemann surfaces with boundary, each of which may be possibly disconnected. We investigate conformally invariant integral operators of Schiffer, which act on $L^{2}$ anti-holomorphic one-forms on one of these surfaces with boundary and produce holomorphic one-forms on the disjoint union. These operators arise in potential theory, boundary value problems, approximat…

Don't be Afraid of Cell Complexes! An Introduction from an Applied Perspective
Josef Hoppe, Vincent P. Grande, Michael T. Schaub
https://arxiv.org/abs/2506.09726

Don't be Afraid of Cell Complexes! An Introduction from an Applied Perspective
Cell complexes (CCs) are a higher-order network model deeply rooted in algebraic topology that has gained interest in signal processing and network science recently. However, while the processing of signals supported on CCs can be described in terms of easily-accessible algebraic or combinatorial notions, the commonly presented definition of CCs is grounded in abstract concepts from topology and remains disconnected from the signal processing methods developed for CCs. In this paper, we aim to …

This https://arxiv.org/abs/2501.03465 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csNI_…

Extending Internet Access Over LoRa for Internet of Things and Critical Applications
LoRa bridges the gap between remote locations and mainstream networks, enabling large-scale Internet of Things (IoT) deployments. Despite the recent advancements around LoRa, Internet access over this technology is still largely unexplored. Most existing solutions only handle packets within the local LoRa network and do not interact with web applications. This limits the scalability and the ability to deliver essential web services in disconnected regions. This work proposes and implements ILoR…

Generic infinite generation, fixed-point-poor representations and compact-element abundance in disconnected Lie groups
Alexandru Chirvasitu
https://arxiv.org/abs/2507.04065

Generic infinite generation, fixed-point-poor representations and compact-element abundance in disconnected Lie groups
The semidirect product $\mathbb{G}=\mathbb{L}\rtimes \mathbb{K}$ attached to a compact-group action on a connected, simply-connected solvable Lie group has a dense set of compact elements precisely when the $s\in \mathbb{K}$ operating on $\mathbb{L}$ fixed-point-freely constitute a dense set. This (along with a number of alternative equivalent characterizations) extends the Wu's analogous result for connected Lie $\mathbb{K}$, and also provides ample supplies of examples of almost-connected Lie…

Another set of services has been disconnected from Gmail, including Apple.
#degoogle #degoogleAdventures #apple #ipad

An Ontology for Representing Curriculum and Learning Material
Antrea Christou, Chris Davis Jaldi, Joseph Zalewski, Hande K\"u\c{c}\"uk McGinty, Pascal Hitzler, Cogan Shimizu
https://arxiv.org/abs/2506.05751

An Ontology for Representing Curriculum and Learning Material
Educational, learning, and training materials have become extremely commonplace across the Internet. Yet, they frequently remain disconnected from each other, fall into platform silos, and so on. One way to overcome this is to provide a mechanism to integrate the material and provide cross-links across topics. In this paper, we present the Curriculum KG Ontology, which we use as a framework for the dense interlinking of educational materials, by first starting with organizational and broad pe…

Does anyone know how to get a competent Comcast business support engineer to actually talk to you? I've called their support line three times, each time they tried rebooting the modem (saying they would only do this once, liars) and then disconnected me saying that I could call back if I was still having problems.
I have yet to reach even a level 1 support drone.
I'm trying to a) get my CPE password reset because the password in my password manager doesn't work anymor…

Multi-patch/multiple-scattering frequency-time hybrid solver for interior and exterior wave equation problems
Shuai Pan, Gang Bao, Tao Yin, Oscar P. Bruno
https://arxiv.org/abs/2507.05725

Multi-patch/multiple-scattering frequency-time hybrid solver for interior and exterior wave equation problems
This paper proposes a new multiple-scattering frequency-time hybrid (FTH-MS) integral equation solver for problems of wave scattering by obstacles in two dimensional space, including interior problems in closed cavities and problems exterior to a set of disconnected open or closed scattering obstacles. The multiple-scattering FTH-MS method is based on a partition of the domain boundary into a user-prescribed set of overlapping open arcs, along with a corresponding sequence of multiple-scatterin…

Towards a consistent Semiclassical Theory of Gravity
Francisco Pipa
https://arxiv.org/abs/2507.05237 https://arxiv.org/pdf/2507.05237…

Towards a consistent Semiclassical Theory of Gravity
We argue that semiclassical gravity can be rendered consistent by assuming that quantum systems only emit a gravitational field when they interact with a stable determination chain (SDCs), which are specific chains of interactions modeled via decoherence and test functions obeying a set of conditions. When systems are disconnected from SDCs, they do not emit a gravitational field. This denies the universality of gravity, while upholding a version of the equivalence principle. We argue that this…

This https://arxiv.org/abs/2409.11231 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Positively closed $Sh(B)$-valued models
We study positively closed and strongly positively closed topos-valued models of coherent theories. Positively closed is a global notion (it is defined in terms of all possible outgoing homomorphisms), while strongly positively closed is a local notion (it only concerns the definable sets inside the model). For $\mathbf{Set}$-valued models of coherent theories they coincide. We prove that if $\mathcal{E}=Sh(X)$ for an extremally disconnected Stone space (or equivalently $\mathcal{E}=Sh(B,τ_{…

Commuting self-adjoint extensions of the partial differential operators on disconnected sets
Piyali Chakraborty, Dorin Dutkay
https://arxiv.org/abs/2506.23720

Commuting self-adjoint extensions of the partial differential operators on disconnected sets
In connection with the Fuglede conjecture, we study the existence of commuting self-adjoint extensions of the partial differential operators on arbitrary, possibly disconnected domains in $\br^d$, the associated unitary group, the spectral measure and some geometric properties.

A post from the archive 📫:
Radical amazement
#musings

Analysis of the Plancherel weight and factoriality of the group von Neumann algebras of non-unimodular totally disconnected groups
Yuki Miyamoto
https://arxiv.org/abs/2505.21253

Analysis of the Plancherel weight and factoriality of the group von Neumann algebras of non-unimodular totally disconnected groups
Let $G$ be a locally compact group, $L(G)$ be its group von Neumann algebra equipped with the Plancherel weight $φ_G$. In this paper, we consider the following two questions. (1) When is the restriction of $φ_G$ to the subalgebra generated by a closed subgroup $H$ semifinite? If so, is it equal (up to a constant) to $φ_H$? (2) When is $L(G)$ a factor? We give a complete answer to (1), and when $G$ is second countable, totally disconnected and admits a sufficiently large non-unimodular part, …

In the last couple of months, I've been distracted. Disconnected from the others and me. June was way better. It may be a local maximum. Who knows? But we better enjoy the good times whenever we can.
https://www.davideaversa.it/blog/changelog-june-2025/

The Changelog – June 2025
In this scorching hot June, I started to be myself again and I am again finally able to feel enthusiasm for projects and ideas. And for this reason, I read and watched more things. So let’s explore last month’s books, movie, and my favorite Japanese web radio.

Done for today. I successfully disconnected one of my Google profiles from the third-party services I use. It took some time because I had to create many passwords and then disconnect.
I also deleted several services I no longer use and switched from Gmail to privacy-focused email addresses.
Continuing tomorrow.
#degoogle

Piketty on the need for a wealth tax, with a fairly hilarious French Revolution analogy – Le blog de Thomas Piketty https://www.lemonde.fr/blog/piketty/2025/06/17/the-senate-beside-the-story/

Ultra-wealthy, the Senate beside the story
By opposing the 2% minimum wealth tax on the 1,800 French people whose net worth exceeds €100 million, after the measure was adopted by France's Assemblée nationale (lower house of Parliament), the upper house, the Sénat, has shown just how disconnected it is from the issues of our time. This is nothing new. Between 1896 …

Continuer la lecture

@arXiv_csCG_bot@mastoxiv.page
2025-06-03 16:00:01

This https://arxiv.org/abs/2212.06782 has been replaced.
link: https://scholar.google.com/scholar?q=a

On Computing Vertex Connectivity of 1-Plane Graphs
The vertex connectivity of a graph $G$ is the size of the smallest set of vertices $S$ such that $G \setminus S$ is disconnected. For the class of planar graphs, the problem of vertex connectivity is well-studied, both from structural and algorithmic perspectives. Let $G$ be a plane embedded graph, and $Λ(G)$ be an auxiliary graph obtained by inserting a face vertex inside each face and connecting it to all vertices of $G$ incident with the face. If $S$ is a minimal vertex cut of $G$, then the…

@arXiv_quantph_bot@mastoxiv.page
2025-06-24 12:28:20

State updates and useful qubits in relativistic quantum information
Jos\'e Polo-G\'omez, T. Rick Perche, Eduardo Mart\'in-Mart\'inez
https://arxiv.org/abs/2506.18906

State updates and useful qubits in relativistic quantum information
We address the longstanding challenge of consistently updating quantum states after selective measurements in a relativistic spacetime. Standard updates along the future lightcones preserve causality but break correlations between causally disconnected parties, whereas updates along the past lightcone either imply retrocausality or do not respect the causal propagation of information. We introduce a minimal extension of multipartite states to encode subsystem-specific contextual information. Th…

@castarco@hachyderm.io
2025-04-18 22:17:56

I guess there's no real need to explain why I'm doing this, but there's always someone who was lucky enough to be living in the jungle for a while (or something like that), disconnected from everything.
Hypothetical jungle person: I envy you.
Summary: I'm tired of big corporations stealing everything they can to train their #LLMs, and I'm also tired of companies like #Microsoft being active collaborators of the Trump regime.

@azonenberg@ioc.exchange
2025-06-24 21:58:14

Once again complaining about the state of transit in my area.
I need to catch an early morning flight for work.
I'm traveling, so not taking my bike (there's no easy way to fly with it). I'm definitely not going to take the car and pay for long-term parking. Uber put ~all of the local taxi companies out of business (as I discovered when I tried calling them and found one after another had their number disconnected). The bus I take to work picks up over a mile from my …

@arXiv_hepth_bot@mastoxiv.page
2025-07-03 08:34:10

Mixed five-point correlators in the 3d Ising model
David Poland, Valentina Prilepina, Petar Tadi\'c
https://arxiv.org/abs/2507.01223 https://

Mixed five-point correlators in the 3d Ising model
We study five-point correlators of the $σ$, $ε$, and $ε'$ operators in the critical 3d Ising model. We consider the $σ\times σ$ and $σ\times ε$ operator product expansions (OPEs) and truncate them by including a finite set of exchanged operators. We approximate the truncated operators by the corresponding contributions in appropriate disconnected five-point correlators. We compute a number of OPE coefficients that were previously unknown and show that these are consistent with prediction…

@arXiv_mathMG_bot@mastoxiv.page
2025-05-28 10:17:36

This https://arxiv.org/abs/2107.07544 has been replaced.
link: https://scholar.google.com/scholar?q=a

On Boundaries of $\varepsilon$-neighbourhoods of Planar Sets, Part II: Global Structure and Curvature
We study the global topological structure and smoothness of the boundaries of $\varepsilon$-neighbourhoods $E_\varepsilon = \{x \in \mathbb{R}^2 \, : \, \textrm{dist}(x, E) \leq \varepsilon \}$ of planar sets $E \subset \mathbb{R}^2$. We show that for a compact set $E$ and $\varepsilon > 0$ the boundary $\partial E_\varepsilon$ can be expressed as a disjoint union of an at most countably infinite union of Jordan curves and a possibly uncountable, totally disconnected set of singularities. We al…

@arXiv_condmatsoft_bot@mastoxiv.page
2025-06-23 10:44:40

Cascade at local yield strain for silica and metallic glass
Nandlal Pingua, Himani Rautela, Roni Chatterjee, Smarajit Karmakar, Pinaki Chaudhuri, Shiladitya Sengupta
https://arxiv.org/abs/2506.17129

Cascade at local yield strain for silica and metallic glass
We report observations of unusal \emph{first} plastic events in silica and metallic glasses in the shear startup regime at applied strain two orders of magnitude smaller than yield strain. The (non-Affine) particle displacement field during these events have complex real space structure with multiple disconnected cores of high displacement appearing at the \emph{same} applied strain under athermal quasistatic simple shear deformation, and identified by a ``cell based cluster analysis'' method. …

@arXiv_mathOA_bot@mastoxiv.page
2025-07-01 09:23:13

The regular representation of Neretin groups is factorial
Basile Morando
https://arxiv.org/abs/2506.24029 https://arxiv.org/pdf/2506.…

The regular representation of Neretin groups is factorial
We show that the left regular representation of Neretin groups is factorial, providing the first example of a non-discrete simple group with this property. This is based on a new criterion of factoriality for totally disconnected groups. For groups G satisfying the criterion, we determine the type of the factor L(G) and derive factoriality results for crossed products associated to G-actions on von Neumann algebras.

@arXiv_mathOC_bot@mastoxiv.page
2025-06-13 08:37:10

Dynamic Less-Than-Truckload Transportation Planning in Hyperconnected Hub Networks with Multi-Carrier Operations
Tiankuo Zhang, Jingze Li, Benoit Montreuil
https://arxiv.org/abs/2506.10290

Dynamic Less-Than-Truckload Transportation Planning in Hyperconnected Hub Networks with Multi-Carrier Operations
Less-than-truckload (LTL) shipment is vital in modern freight transportation yet is in dire need of more efficient usage of resources, higher service responsiveness and velocity, lower overall shipping cost across all parties, and better quality of life for the drivers. The industry is currently highly fragmented, with numerous small to medium-sized LTL carriers typically operating within dedicated regions or corridors, mostly disconnected from each other. This paper investigates the large-scal…

@arXiv_mathDG_bot@mastoxiv.page
2025-06-26 08:49:40

On the space of metrics with non-positive curvature
Yasha Savelyev
https://arxiv.org/abs/2506.19983 https://arxiv.org/pdf/2506.19983

On the space of metrics with non-positive curvature
Let $\mathcal{M} (X)$ denote the space of complete Riemannian metrics with non-positive sectional curvature and with negatively curved ends, on a manifold $X$. We show that $\mathcal{M} (\mathbb{R} \times S ^{1}) $ and $\mathcal{M} (\mathbb{R} ^{} \times Y)$ are path disconnected, where $Y$ is compact and admits a negative curvature metric. The proof is very concise, using as the main ingredient Fuller index theory. Furthermore, we get a new metric deformation invariant based on geodesic string…

@arXiv_mathFA_bot@mastoxiv.page
2025-06-24 10:30:30

The ball fixed point property in spaces of continuous functions
Antonio Avil\'es, Mar\'ia Jap\'on, Christopher Lennard, Gonzalo Mart\'inez Cervantes, Adam Stawski
https://arxiv.org/abs/2506.17995

The ball fixed point property in spaces of continuous functions
A Banach space $X$ has the ball fixed point property (BFPP) if for every closed ball $B$ and for every nonexpansive mapping $T\colon B\to B$, there is a fixed point. We study the BFPP for $C(K)$-spaces. Our goal is to determine topological properties over $K$ that may determine the failure or fulfillment of the BFPP for the space of continuous functions $C(K)$. We prove that the class of compact spaces $K$ for which the BFPP holds lies between the class of extremally disconnected compact spaces…

@arXiv_mathOC_bot@mastoxiv.page
2025-06-13 09:08:10

Boundary output feedback stabilization of a cascade of N heat equations
Hugo Lhachemi (L2S), Christophe Prieur (GIPSA-INFINITY), Emmanuel Tr\'elat (LJLL)
https://arxiv.org/abs/2506.10500

Boundary output feedback stabilization of a cascade of N heat equations
This paper solves the problem of output feedback stabilization for a cascade of N heat equations that are coupled at the boundary, the input being a scalar boundary control applied to the first heat equation of the cascade, and the scalar output being either a distributed or a pointwise in-domain measurement done on the last equation of the cascade. Two different configurations are studied in details. The first one consists of a cascade of N heat equations with totally disconnected spectra. The…