Tootfinder

Hem från Kyiv efter uppdrag för Myndigheten för psykologiskt försvar. Skriver om kontraster. Flyglarmet ljuder medan unga spelar piano på gatan. Om att möta samtiden och framtiden samtidigt. Tillbaka i Kyiv - där vardag är motståndskraft.
https://carlheath.se/tillbaka-i-kyiv-d

I've made *many* little SynthDIY boards over the years, targeting: low-cost, for newbies, Pico & CircuitPython. Here are some.
I've never been quite satisfied w/ the results.
Maybe the solution is more knobs & more choc keyswitches?
Good idea?
#SynthDIY #RaspberryPiPico

This https://arxiv.org/abs/2401.16508 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

A synthetic approach to detecting $v_1$-periodic families
We provide a simple proof that the unit map from the sphere spectrum to the connective image-of-$J$ spectrum $\mathrm{j}$ is surjective on homotopy groups. This is achieved using a novel $t$-structure on the category of $E$-synthetic spectra and a specific construction of $\mathbf{F}_p$- and BP-synthetic lifts of $\mathrm{j}$. These synthetic lifts then easily produce modified Adams and Adams--Novikov spectral sequences for $\mathrm{j}$ which we use the prove the above detection statement, all …

Class-preserving Coleman Automorphisms of Finite Groups with Semidihedral Sylow 2-Subgroups
Riccardo Aragona
https://arxiv.org/abs/2506.08904 https://

Class-preserving Coleman Automorphisms of Finite Groups with Semidihedral Sylow 2-Subgroups
In this paper, we prove that finite groups with semidihedral Sylow 2-subgroup have Class-preserving Coleman outer automorphism group of odd order. As a consequence, these groups satisfy the normalizer problem. In particular, we extend some existing results in the literature concerning class-preserving Coleman automorphisms of finite groups with semidihedral Sylow 2-subgroups.

Here's my latest Human Meme podcast about the thousand year future of AI and the us of us:
https://humanmeme.com/from-ancient-golems-to-the-synthetic-sacred-how-ai-evolved-from-my…

Synthetic Tabular Data: Methods, Attacks and Defenses
Graham Cormode, Samuel Maddock, Enayat Ullah, Shripad Gade
https://arxiv.org/abs/2506.06108 https://

Synthetic Tabular Data: Methods, Attacks and Defenses
Synthetic data is often positioned as a solution to replace sensitive fixed-size datasets with a source of unlimited matching data, freed from privacy concerns. There has been much progress in synthetic data generation over the last decade, leveraging corresponding advances in machine learning and data analytics. In this survey, we cover the key developments and the main concepts in tabular synthetic data generation, including paradigms based on probabilistic graphical models and on deep learni…

I've made *many* little SynthDIY boards over the years, targeting: low-cost, for newbies, Pico & CircuitPython. Here are some.
I've never been quite satisfied w/ the results.
Maybe the solution is more knobs & more choc keyswitches?
Good idea?
#SynthDIY #RaspberryPiPico

Hint to protesters - wave the American flag. Upside down is fine. Waving foreign flags helps Trump’s claim of invasion.
#LA #immigration #ICE

Doubly Smoothed Optimistic Gradients: A Universal Approach for Smooth Minimax Problems
Taoli Zheng, Anthony Man-Cho So, Jiajin Li
https://arxiv.org/abs/2506.07397

Doubly Smoothed Optimistic Gradients: A Universal Approach for Smooth Minimax Problems
Smooth minimax optimization problems play a central role in a wide range of applications, including machine learning, game theory, and operations research. However, existing algorithmic frameworks vary significantly depending on the problem structure -- whether it is convex-concave, nonconvex-concave, convex-nonconcave, or even nonconvex-nonconcave with additional regularity conditions. In particular, this diversity complicates the tuning of step-sizes since even verifying convexity (or concavi…

Der gute Herr #Dobrindt hat heute bei den Zahlen der Rechts- bzw Linksextremisten ein wenig mit den Skalen in den Grafiken geschummelt. Warum wohl?