Tootfinder

If Americans don’t fight back against efforts to dismantle higher education,
the U.S. will lose lifesaving medical research, innovation that spurs our economy and the ability to freely study science and society
https://www.scientificamerican.com/article

Apathy Over Attacks on Higher Education Needs to Change
If Americans don’t fight back against efforts to dismantle higher education, the U.S. will lose lifesaving medical research, innovation that spurs our economy and the ability to freely study science and society

Another eclectic collection of books has been dropped off at the local “Little Free Library” with their “please don’t sell me” stamps and QR codes to the various books pages at https://Bookwyrm.social (Fedi GR alt) & @thestorygraph.com (Black owned GR alt) so that people can read about/review the books.

NAM stopt per direct met gaswinning bij Ameland vanwege bodemdaling | de #Volkskrant
https://www.volkskrant.nl/binnenland/nam-s

Efter den lite kaotiska klungan på Arlanda igår, fick @… /@alexandrauo.bsky.social@bsky.brid.gy ställa några frågor till Greta Thunberg när hon väntade på bussen. Läs hela här: https://www.

Greta Thunberg tillbaka i Sverige: ”Regeringens tystnad är talande”
Sveriges regering är medskyldig till folkmordet och hanteringen efter Israels olagliga ingripande mot hjälpfartyget Madleen är talande för…

Verletzte nach Angriff auf Saporischschja
Bei einem russischen Luftangriff auf die südukrainische Großstadt Saporischschja sind nach ersten Angaben mindestens 19 Menschen verletzt worden. Wie Militärverwalter Iwan Fedorow auf Facebook mitteilte, traf eine der Gleitbomben einen Busbahnhof im Zentrum. Über dem Ort bildete sich eine dichte Rauchwolke. Das Gebäude wurde schwer beschädigt.
"Es gibt Informationen, dass sich noch w…
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Ukraine-Krieg: ++ USA wollen Gespräch zwischen Putin und Selenskyj ++
Laut US-Vizepräsident JD Vance arbeiten die USA daran, Gespräche zwischen Präsident Putin und Präsident Selenskyj zu vereinbaren. Kanzler Merz kündigte in den tagesthemen an, noch heute mit US-Präsident Trump zu telefonieren.

Anybody have a USB superspeed 2 port hub chipset you like?
No PD required, but if it includes the muxing for USB-C rotation that would be great.
Single row QFN package would be ideal, large (0.8/1mm pitch) BGA doable. TQFP and WLCSP/0.5mm BGA are no go.

Deon Bush suffers torn Achilles in preseason opener, Andy Reid confirms injury to Chiefs safety

https://www.cbssports.com/nfl/news/deon-bu

Extended JT supergravity and random matrix models: The power of the string equation
Clifford V. Johnson, Maciej Kolanowski
https://arxiv.org/abs/2507.07185

Extended JT supergravity and random matrix models: The power of the string equation
A number of supersymmetric Jackiw-Teitelboim (JT) gravity theories are known to be described (in the Euclidean path integral formulation) by double-scaled random matrix models. Such matrix models can be characterized using a certain ``string equation''. It was shown recently that in extended supergravity, when the number of BPS states scales as ${\rm e}^{S_0}$, where $S_0$ is the extremal entropy, a special ansatz for the leading order solution of the string equation yields the supergravity spe…

Sparsifying Sums of Positive Semidefinite Matrices
Arpon Basu, Pravesh K. Kothari, Yang P. Liu, Raghu Meka
https://arxiv.org/abs/2508.08169 https://arxiv.o…

Sparsifying Sums of Positive Semidefinite Matrices
In this paper, we revisit spectral sparsification for sums of arbitrary positive semidefinite (PSD) matrices. Concretely, for any collection of PSD matrices $\mathcal{A} = \{A_1, A_2, \ldots, A_r\} \subset \mathbb{R}^{n \times n}$, given any subset $T \subseteq [r]$, our goal is to find sparse weights $μ\in \mathbb{R}_{\geq 0}^r$ such that $(1 - ε) \sum_{i \in T} A_i \preceq \sum_{i \in T} μ_i A_i \preceq (1 + ε) \sum_{i \in T} A_i.$ This generalizes spectral sparsification of graphs which …

Superconformal Weight Shifting Operators
Tobias Hansen, Paul Heslop, Hector Puerta Ramisa
https://arxiv.org/abs/2506.08682 https://ar…

Superconformal Weight Shifting Operators
We develop a framework for constructing superconformal blocks for correlators of general supermultiplets in theories with $SU(m,m|2n)$ symmetry, such as four-dimensional $\mathcal{N}\!=\!2$ and $\mathcal{N} \!=\! 4$ conformal theories. We use analytic superspace, viewed as the super-Grassmannian $\mathrm{Gr}(m|n,2m|2n)$, which includes 4D Minkowski space ($m=2,n=0$). In this formalism, superblocks for non-half-BPS correlators are analogous to non-supersymmetric conformal blocks f…