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Noch einige der zuletzt hier besonders häufig geteilten #News:
Datensparsamkeit Fehlanzeige: Datenleck bei Corplife, Lieferdiensten & Webshops

This https://arxiv.org/abs/2501.07780 has been replaced.
initial toot: https://mastoxiv.page/@a…

Thermal Annealing and Radiation Effects on Structural and Electrical Properties of NbN/GaN Superconductor/Semiconductor Junctions
In the rapidly evolving field of quantum computing, niobium nitride (NbN) superconductors have emerged as integral components due to their unique structural properties, including a high superconducting transition temperature (Tc), exceptional electrical conductivity, and compatibility with advanced device architectures. This study investigates the impact of high-temperature annealing and high-dose gamma irradiation on the structural and superconducting properties of NbN films grown on GaN via r…

Join Andrew Musselman and Trevor Grant as they present the latest developments in Mahout's new quantum compute layer, Qumat. They will provide an overview of the project, explain why Qumat was developed, and demonstrate its current capabilities. They will also present a demo of Qumat in action and conclude with calls to action for researchers and engineers who are interested in using and contributing to the project.
Learn more:

Qumat: Apache Mahout Quantum Compute
Following Mahout's core values of interoperability and providing tools for matrix arithmetic at scale, we have added a new layer (qumat) alongside our existing distributed matrix math framework (Samsara), that allows quantum researchers and developers to write code once and run it on any back-end available. As with distributed compute systems like Spark and Flink, moving from one platform to another typically requires a complete code rewrite. This is prohibitive in most cases, but Samsara allow…

Welcome to the Update Computer Club!
International Open #Hackerspace Day
March 29, 15:00 – open end
Svartbäcksgatan 65, 753 33 #Uppsala
The event is #free and open to eve…

On the Farrell--Tate $K$-theory of $\text{Out}(F_n)$
Naomi Andrew, Irakli Patchkoria
https://arxiv.org/abs/2505.21803 https://arxiv.o…

On the Farrell--Tate $K$-theory of $\text{Out}(F_n)$
Using Lück's Chern character isomorphism we obtain a general formula in terms of centralisers for the $p$-adic Farrell--Tate $K$-theory of any discrete group $G$ with a finite classifying space for proper actions. We apply this formula to $\text{Out}(F_n)$. The case $n=p+1$ turns out to be especially interesting for the following reason: Up to conjugacy there is exactly one order $p$ element in $\text{Out}(F_{p+1})$ which does not lift to an order $p$ element in $\text{Aut}(F_{p+1})$. We compu…

This https://arxiv.org/abs/2402.11229 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Spin dynamics and dark particle in a weak-coupled quantum Ising ladder with $\mathcal{D}_8^{(1)}$ spectrum
Emergent Ising$_h^2$ integrability is anticipated in a quantum Ising ladder composed of two weakly-coupled critical transverse field Ising chains. The system is remarkable for including eight types of massive relativistic particles, with their scattering matrix and mass spectrum characterized by the $\mathcal{D}_8^{(1)}$ Lie algebra. In this article, by computing the spin dynamical structure factors following analytical form factor approach, we clearly identify dispersive single-particle excita…

In this post "Consent-Based Computing", I think Heidi Waterhouse is articulating some my own feelings, reflections and choices about the tools around us today and the tradeoffs I'm prepared to make. #linkTuesday

My aging #Ubiquiti Edgerouter-X is failing. So, I spent 3 hours yesterday trying to set up a new #Unifi Gateway Max without success. I'm returning it.
I decided to just get a #miniPC with dua…

Following up on the post about old #Windows installations, we have this one about floppy disks. Or as some people know them, the "Save" icon.
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Obsolete, but not gone: The people who won't give up floppy disks
The last floppy disk was made over a decade ago and doesn't even have enough capacity to store a modern smart phone picture, so why do some people still love using them?

Computer scientist Greg Nelson and I presented "Following AI's Footsteps from School to Society" at the 2025 UMaine Faculty Institute https://mycampus.maine.edu/web/uc-faculty-portal/faculty-institute-2025 including the IMPACT RISK framew…