Tootfinder

Doing a more extensive SI/PI workup on the switch line card in preparation for a) a blog update on the switch project and b) getting all my I's dotted and T's crossed before spending a lot of money stuffing three more boards and ordering the logic board.
Here's the 2.5V rail, putting out a bit over 2A at 2.5V. Ripple is dominated by ~300 kHz switching noise plus some harmonics of the 125 MHz PHY symbol rate (which makes sense this rail is driving the PHY PAM5 transceivers a…

Wer jetzt „geile Sache“ denkt, vergisst, dass andere Bots auch radikalisieren können.
Student Makes Tool That Identifies ‘Radicals’ on Reddit, Deploys AI Bots to Engage With Them https://www.404media.co/student-makes-tool

Apparently, looking for The Darkest of the Hillside Thickets’ cover of “Walking on the Moon” on #Apple #Music is a cry for help. Judgy much, Apple? 🤔

This weekend I listened to the 'How to Age Up' podcast on climate change. A lot of good observations for how parents can help their children process the daily news cycle and manage their anxiety about the future.
Turns out one effective strategy is one I keep hearing from so many different sources - you build community. Building community makes communities more resilient. Building community makes you feel less alone - so you can help do the work to combat climate change/racism/…

TIL there’s an Apple Silicon Linux distro for Macs and that Apple doesn’t even try to get in the way. I wonder if it feels faster or slower than MacOS.
https://asahilinux.org/about/
h/t @…

About - Asahi Linux

Updated Masses for the Gas Giants in the Eight-Planet Kepler-90 System Via Transit-Timing Variation and Radial Velocity Observations
David E. Shaw, Lauren M. Weiss, Eric Agol, Karen A. Collins, Khalid Barkaoui, Cristilyn N. Watkins, Richard P. Schwarz, Howard M. Relles, Chris Stockdale, John F. Kielkopf, Fabian Rodriguez Frustaglia, Allyson Bieryla, Joao Gregorio, Owen Mitchem, Katherine Linnenkohl, Adam Popowicz, Norio Narita, Akihiko Fukui, Micha\"el Gillon, Ramotholo Sefako, Av…

Updated Masses for the Gas Giants in the Eight-Planet Kepler-90 System Via Transit-Timing Variation and Radial Velocity Observations
The eight-planet Kepler-90 system exhibits the greatest multiplicity of planets found to date. All eight planets are transiting and were discovered in photometry from the NASA Kepler primary mission. The two outermost planets, g ($P_g$ = 211 d) and h ($P_h$ = 332 d) exhibit significant transit-timing variations (TTVs), but were only observed 6 and 3 times respectively by Kepler. These TTVs allow for the determination of planetary masses through dynamical modeling of the pair's gravitational int…

Piano basics: the black notes - what are they for and how do you use them? https://www.musicradar.com/music-tech/keyb…

Piano basics: the black notes - what are they for and how do you use them?
Fear of a black key?… Don't be afraid. Adding flats and sharps to your music will give it a new lease of life.

Formal Concept Analysis and Homotopical Combinatorics
Scott Balchin, Ben Spitz
https://arxiv.org/abs/2507.14068 https://arxiv.org/pdf…

Formal Concept Analysis and Homotopical Combinatorics
Formal Concept Analysis makes the fundamental observation that any complete lattice $(L, \leq)$ is determined up to isomorphism by the restriction of the relation ${\leq} \subseteq L \times L$ to the set $J(L) \times M(L)$, where $J(L)$ is the set of join-irreducible elements of $L$ and $M(L)$ is the set of meet-irreducible elements of $L$. For any finite lattice $L$ equipped with the action of a finite group $G$, we explicitly describe this restricted relation for the lattice of transfer sys…

Susceptibilities and Taylor coefficients of magnetic QCD from perturbation theory
Eduardo S. Fraga, Let\'icia F. Palhares, Tulio E. Restrepo
https://arxiv.org/abs/2507.14360

Susceptibilities and Taylor coefficients of magnetic QCD from perturbation theory
We compute the coefficients $c_2(T,B)$ and $c_4(T,B)$ of the Taylor expansion for the pressure in powers of $μ_B/T$ in the presence of a large magnetic field within perturbative QCD at finite temperature and baryon density up to two-loops for $N_f=3$ flavors with physical quark masses. We also present results for the excess of pressure, baryon density and baryon number susceptibility as functions of $μ_B$, as well as susceptibilities as functions of the temperature in the $\{ μ_B,μ_Q,μ_S \…

The first televangelist.