Tootfinder

Searching for a Hidden Markov Anomaly over Multiple Processes
Levli Citron, Kobi Cohen, Qing Zhao
https://arxiv.org/abs/2506.17108 https://

Searching for a Hidden Markov Anomaly over Multiple Processes
We address the problem of detecting an anomalous process among a large number of processes. At each time t, normal processes are in state zero (normal state), while the abnormal process may be in either state zero (normal state) or state one (abnormal state), with the states being hidden. The transition between states for the abnormal process is governed by a Markov chain over time. At each time step, observations can be drawn from a selected subset of processes. Each probed process generates a…

The fractal Goodstein principle
David Fern\'andez-Duque, Andreas Weiermann
https://arxiv.org/abs/2508.14768 https://arxiv.org/pdf/2508.14768

The fractal Goodstein principle
The original Goodstein process is based on writing numbers in hereditary $b$-exponential normal form: that is, each number $n$ is written in some base $b\geq 2$ as $n=b^ea+r$, with $e$ and $r$ iteratively being written in hereditary $b$-exponential normal form. We define a new process which generalises the original by writing expressions in terms of a hierarchy of bases $B$, instead of a single base $b$. In particular, the `digit' $a$ may itself be written with respect to a smaller base $b'$. W…

Is it normal that I have low-level PTSD from not being confirmed for my position during probation period at my previous job and that now I don't want to even add the current one to my linkedin profile, nor assume I'll still have it next year?

Obscure kernel bug use-after-free and then the VLAI severity told me "maybe important" before I read the drama #kernel

[CVE-2025-38001] Exploiting All Google kernelCTF Instances And Debian 12 With A 0-Day For $82k: A RBTree Family Drama (Part One: LTS & COS)
CVE-2025-38001 is a Use-After-Free vulnerability in the Linux network packet scheduler, specifically in the HFSC queuing discipline. When the HFSC qdisc is utilized with NETEM and NETEM packet duplication is enabled, using HFSC_RSC it is possible to cause a double class insertion in the HFSC eligible tree. Under normal conditions, this would lead to an infinite loop in hfsc_dequeue() due to an RBTree cycle. However, by adding TBF as root qdisc, it is possible to prevent packets from being deque…

Has any one done a survey/count of the number of technical or other US-venue meetings or conventions are being cancelled because of the danger to foreign nationals who attend?
The US has become a police state much, much faster than Nazi Germany did in the 1930's.
I've already noticed a downturn - for instance I was able to book rooms at a fancy hotel (Four Seasons) for about 1/2 of the normal rate.

If you burn fossil fuels (and have no plan to migrate to an EV & heatpump or similar), plus you buy a lot of plastic (made from fossil fuel) and acrylic/polyester clothing - well I hate to break it to you, but you cannot make up for this by being a vegan or re-posting toots from a Kindness to Animals NGO.
Those animals you want to be nice to require a clean world with a normal climate in order to survive (incidentally, so do we).

All good advice.
https://mastodon.social/@GeePawHill/114820870596337330

Unfortunately & conversely, this (below) is the same framing tech bros (and parts of the population) are finding so attractive to anthropomorphize LLMs: These are not machines, and them making mistakes is normal and expected... At the same time, the other card being played (by politics, military & law enforcement) is that AI-driven insights and decision making are _already_ considered superior, infallible and unchallengeable... in the middle of this two pronged rhetoric is the fate o…

Initial proof of life out of the flash: using normal x1 operation, it appears to be fully functional when driven by the MCU over APB.
So far, I haven't tested actually reading/writing data, but it's doing everything I would expect from a fully functional, correctly soldered flash. Not sure why Vivado doesn't like it.
It's definitely hooked up to the right pins since I'm using the STARTUPE3 hard IP to interface with it.

A number game reconciliation
Prem Kant, Urban Larsson
https://arxiv.org/abs/2507.04717 https://arxiv.org/pdf/2507.04717

A number game reconciliation
Number games play a central role in alternating normal play combinatorial game theory due to their real-number-like properties (Conway 1976). Here we undertake a critical re-examination: we begin with integer and dyadic games and identify subtle inconsistencies and oversights in the established literature (e.g. Siegel 2013), most notably, the lack of distinction between a game being a number and a game being equal to a number. After addressing this, we move to the general theory of number games…

Non-Affine Stein Manifolds and Normal Crossing Divisors
Randall R. Van Why
https://arxiv.org/abs/2507.22290 https://arxiv.org/pdf/2507.22290

Non-Affine Stein Manifolds and Normal Crossing Divisors
We show that there are Stein manifolds that admit normal crossing divisor compactifications despite being neither affine nor quasi-projective. To achieve this, we study the contact boundaries of neighborhoods of symplectic normal crossing divisors via a contact-geometric analog of W. Neumann's plumbing calculus. In particular, we give conditions under which the neighborhood is determined by the contact structure on its boundary.

THIS👇👇👇👇👇
https://zirk.us/@ChrisMayLA6/114949958179517536
( And it highlights the fact that we need to rethink utilities, recognizing them as services necessary for a modern equitable society to function)

THIS👇👇👇👇👇
https://zirk.us/@ChrisMayLA6/114949958179517536
( And it highlights the fact that we need to rethink utilities, recognizing them as services necessary for a modern equitable society to function)

Exactness of the normal-ordered two-body truncation of three-nucleon forces
Maxwell Rothman, Ben Johnson-Toth, Francesca Bonaiti, Gaute Hagen, Matthias Heinz, Thomas Papenbrock
https://arxiv.org/abs/2508.01507

Exactness of the normal-ordered two-body truncation of three-nucleon forces
Reference-state based many-body methods start from Hamiltonians that are normal-ordered with respect to the reference state. In low-energy nuclear physics applications normal-ordered Hamiltonians consisting of two- and three-nucleon forces are usually truncated at the two-body rank with residual three-nucleon operators being discarded. Benchmark computations have showed that this truncation is accurate, but we lack an understanding about why it works. We show that the normal-ordered two-body tr…

Evaluation of bound-state $\beta^-$-decay half-lives of fully ionized atoms
Priyanka Choudhary, Chong Qi
https://arxiv.org/abs/2507.08199 https://

Evaluation of bound-state $β^-$-decay half-lives of fully ionized atoms
Bound-state $β^-$-decay is a rare radioactive process where the created electron is trapped in an atomic orbital instead of being emitted. It can be observed in highly ionized atoms in particular when normal beta decay is energetically forbidden, but bound-state decay is still possible. In this work we present a systematic theoretical study on the bound-state $β^-$-decay of fully ionized atoms where key nuclear inputs include the nuclear matrix elements (expressed through $ft$ values) and the…