Tootfinder

As everyone, the #FSF infrastructure is suffering because of 'AI' crawlers:
«Our infrastructure has been under attack since August 2024. Large Language Model (LLM) web crawlers have been a significant source of the attacks»
«the server behind the Free Software Directory, has been under attack since June 18. This likely is an LLM scraper designed to specifically target Media Wiki sites with a botnet. This attack is very active and now partially mitigated.»
https://www.fsf.org/blogs/sysadmin/our-small-team-vs-millions-of-bots

Corrections to Published Values of Frequency Sampling Filter Transition Coefficients
C. S. Ramalingam
https://arxiv.org/abs/2507.02556 https://

Corrections to Published Values of Frequency Sampling Filter Transition Coefficients
Tables of optimal transition coefficients and peak sidelobe level (PSL, in dB) associated with frequency sampling filter (FSF) design were published by Rabiner et al. (Jun 1970), and reproduced, for example, in the book Digital Signal Processing by Proakis and Manolakis (4/e, 2007). A set of values are also given in Appendix H of Understanding Digital Signal Processing} by Lyons (3/e, 2011), but there are significant differences between these two sets. For example, for $N=16$ and BW$=4$, two di…

Reduced fidelities for free fermions out of equilibrium: From dynamical quantum phase transitions to Mpemba effect
Gilles Parez, Vincenzo Alba
https://arxiv.org/abs/2509.01608 h…

Reduced fidelities for free fermions out of equilibrium: From dynamical quantum phase transitions to Mpemba effect
We investigate the out-of-equilibrium dynamics after a quantum quench of the reduced fidelities between the states of a subregion $A$ at different times. Precisely, we consider the fidelity between the time-dependent state of $A$ and its initial value, as well as with the state at infinite time. We denote these fidelities as the reduced Loschmidt echo (RLE) and the final-state fidelity (FSF), respectively. If region $A$ is the full systems, the RLE coincide with the standard Loschmidt echo. We …

> The day people think linux would be better served by somebody else (FSF
> being the natural alternative), I'll "abdicate". I don't think that
> it's something people have to worry about right now - I don't see it
> happening in the near future. I enjoy doing linux, even though it does
> mean some work, and I haven't gotten any complaints (some almost timid
> reminders about a patch I have forgotten or ignored, but n…

A new characterization of the weakly Laskerian (FSF) modules
Ali Fathi
https://arxiv.org/abs/2507.04573 https://arxiv.org/pdf/2507.04…

A new characterization of the weakly Laskerian (FSF) modules
Let $R$ be a commutative Noetherian ring and $M$ be an $R$-module such that the set of associated prime ideals of the quotient module $M/L$ is finite for all submodules $L$ of $M$. In this paper, it is shown that there is a finitely generated submodule $N$ of $M$ such that the set of associated primes of $M/N$ and the support of $M/N$ are equal.