Tootfinder

@… https://nealstephenson.substack.com/

Graphomane | Neal Stephenson | Substack
Neal Stephenson's Substack. Mostly about the intersection of tech and art, with some excursions, digressions, and tangents. I will talk about projects I'm actively working on. I have a personal financial interest in some of those. Click to read Graphomane, by Neal Stephenson, a Substack publication with thousands of subscribers.

Researchers detail All-Topographic Neural Networks, claiming they better mimic human spatial biases and consume less energy than other machine vision networks (Matthew S. Smith/IEEE Spectrum)
https://spectrum.ieee.org/topographic-neural-network

Topographic Neural Networks Help AI See Like a Human
All-TNN networks mimic human vision and consume less energy than CNNs. Curious how they achieve this? Dive into the details.

An interview with Judd Legum about his Substack Popular Information, which has three reporting staff and 20K paying subs, with an estimated $1M annual revenue (Matt Smith/Press Gazette)
https://pressgazette.co.uk/newsletters/substack-ju…

Substacker Judd Legum on doing journalism that 'went out of fashion'
Popular Information has four staff and turns over around $1m per year.

The Fourier Spectral Transformer Networks For Efficient and Generalizable Nonlinear PDEs Prediction
Beibei Li
https://arxiv.org/abs/2507.05584 https://

The Fourier Spectral Transformer Networks For Efficient and Generalizable Nonlinear PDEs Prediction
In this work we propose a unified Fourier Spectral Transformer network that integrates the strengths of classical spectral methods and attention based neural architectures. By transforming the original PDEs into spectral ordinary differential equations, we use high precision numerical solvers to generate training data and use a Transformer network to model the evolution of the spectral coefficients. We demonstrate the effectiveness of our approach on the two dimensional incompressible Navier-St…

Differential Spectrum and Boomerang Spectrum of Some Power Mapping
Yuehui Cui, Jinquan Luo
https://arxiv.org/abs/2506.05738 https://a…

Differential Spectrum and Boomerang Spectrum of Some Power Mapping
Let $f(x)=x^{s(p^m-1)}$ be a power mapping over $\mathbb{F}_{p^n}$, where $n=2m$ and $\gcd(s,p^m+1)=t$. In \cite{kpm-1}, Hu et al. determined the differential spectrum and boomerang spectrum of the power function $f$, where $t=1$. So what happens if $t\geq1$? In this paper, we extend the result of \cite{kpm-1} from $t=1$ to general case. We use a different method than in \cite{kpm-1} to determine the differential spectrum and boomerang spectrum of $f$ by studying the number of rational points o…

An accurate measurement of the spectral resolution of the JWST Near Infrared Spectrograph
Anowar J. Shajib, Tommaso Treu, Alejandra Melo, Shawn Knabel, Michele Cappellari, Joshua A. Frieman
https://arxiv.org/abs/2507.03746

An accurate measurement of the spectral resolution of the JWST Near Infrared Spectrograph
The spectral resolution ($R \equiv λ/ Δλ$) of spectroscopic data is crucial information for accurate kinematic measurements. In this letter, we present a robust measurement of the spectral resolution for the JWST's Near Infrared Spectrograph (NIRSpec) in all its modes: fixed slit (FS), integral field spectroscopy (IFS), and multi-object spectroscopy (MOS). We modeled H and He lines of the planetary nebula SMP LMC 58 using a Gaussian line spread function (LSF) to estimate the wavelength-depen…

Spectral Tur\'{a}n problem for $\mathcal{{K}}_{3,3}^{-}$-free signed graphs
Mingsong Qin, Dan Li
https://arxiv.org/abs/2508.05500 https://arxiv.org/pdf…

Spectral Turán problem for $\mathcal{K}_{3,3}^{-}$-free signed graphs
The classical spectral Turán problem is to determine the maximum spectral radius of an $\mathcal{F}$-free graph of order $n$. Zhai and Wang [Linear Algebra Appl, 437 (2012) 1641-1647] determined the maximum spectral radius of ${C}_{4}$-free graphs of given order. Additionally, Nikiforov obtained spectral strengthenings of the Kővari-Sós-Turán theorem [Linear Algebra Appl, 432 (2010) 1405-1411] when the forbidden graphs are complete bipartite. The spectral Turán problem concerning forbidden…

What can we do now?
"7. Urge friends, relatives, and acquaintances to avoid Trump propaganda outlets such as Fox News, Newsmax, X, and, increasingly, Facebook and Instagram."
https://robertreich.substack.com/p/what-you-can-do-f3d
via

What you can do now
A baker’s dozen of important steps to fight Trump fascism

@… https://zikzak.substack.com/

Zik Zak | Tarotplane | Substack
Lunch for your ears. Click to read Zik Zak, by Tarotplane, a Substack publication with thousands of subscribers.

Apple researchers detail the limitations of top LLMs and large reasoning models, like o3, especially on problems of medium to high complexity (Gary Marcus/Marcus on AI)
https://garymarcus.substack.com/p/a-knockout-blow-for-llms

A knockout blow for LLMs?
LLM “reasoning” is so cooked they turned my name into a verb