Tootfinder

Check out the monster amp stack at my band's gig over the weekend... Pumpin' out the jams.

My new floppy disks arrived!
#retrocomputing

Board installed, cables cleaned up, and nothing caught fire. Gonna call this one finished. CPU temps are between 30C and 31C, the cooler is silent, and everything works. The only cables that are connected to the NAS are the network cables and the power cables which makes things pretty nice. #homelab #nas

Libfork: portable continuation-stealing with stackless coroutines
Conor John Williams, James Elliott
https://arxiv.org/abs/2402.18480 https://

Libfork: portable continuation-stealing with stackless coroutines
Fully-strict fork-join parallelism is a powerful model for shared-memory programming due to its optimal time scaling and strong bounds on memory scaling. The latter is rarely achieved due to the difficulty of implementing continuation stealing in traditional High Performance Computing (HPC) languages -- where it is often impossible without modifying the compiler or resorting to non-portable techniques. We demonstrate how stackless coroutines (a new feature in C++20) can enable fully-portable co…

Moduli stacks of Galois representations and the $p$-adic local Langlands correspondence for $\mathrm{GL}_2(\mathbb{Q}_p)$
Christian Johansson, James Newton, Carl Wang-Erickson
https://arxiv.org/abs/2403.19565

Moduli stacks of Galois representations and the $p$-adic local Langlands correspondence for $\mathrm{GL}_2(\mathbb{Q}_p)$
We give a categorical formulation of the $p$-adic local Langlands correspondence for $\mathrm{GL}_2(\mathbb{Q}_p)$,as an embedding of the derived category of locally admissible representations into the category of Ind-coherent sheaves on the moduli stack of two-dimensional representations of $\mathrm{Gal}(\overline{\mathbb{Q}}_p/\mathbb{Q}_p)$. Moreover, we relate our version of the $p$-adic local Langlands correspondence for $\mathrm{GL}_2(\mathbb{Q}_p)$ to the cohomology of modular curves thr…

Anyone need the PCB for a 16KB Apple II/II (not IIe) Language card? I had PCBway make me some but the smallest quantity is 5. So, I'll likely have 4 left over.
https://github.com/btb/LanguageCard
I'm also going to try my hand at the 80 column card and will again have 4 spa…

The relative James construction and its application to homotopy groups
Zhu Zhongjian, Jin Tian
https://arxiv.org/abs/2402.07072 https://

The relative James construction and its application to homotopy groups
In this paper, we develop the new method to compute the homotopy groups of the mapping cone $C_f=Y\cup_{f}CX$ beyond the metastable range by analysing the homotopy of the $n$-th filtration of the relative James construction $J(X,A)$ for CW-pair $A\stackrel{i}\hookrightarrow X$, defined by B. Gray, which is homotopy equivalent to the homotopy fiber of the pinch map $X\cup_{i}CA\rightarrow ΣA$. As an application, we compute the 5 and 6-dim unstable homotopy groups of 3-dimensional mod $2^r$ Moor…

This https://arxiv.org/abs/2404.13290 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Stacking X-ray Observations of "Little Red Dots": Implications for their AGN Properties
Recent {\em James Webb Space Telescope (JWST)} observations have revealed a population of compact extragalactic objects at $z\gtrsim4$ with red near-infrared colors, which have been dubbed as ``Little Red Dots" (LRDs). The spectroscopically-selected LRDs exhibit broad H$α$ emission lines, which has led to the conclusion that type-I active galactic nuclei (AGN) are harbored in the galaxies' dust-reddened cores. However, other mechanisms, like strong outflowing winds, could also produce broad H$…

Stacked Rayleigh-Taylor instabilities grow drops into soft stalactite-like structures
Barath Venkateswaran, Trevor J. Jones, Grace Kresge, Joel Marthelot, Etienne Jambon-Puillet, P. -T. Brun
https://arxiv.org/abs/2403.09837

Stacked Rayleigh-Taylor instabilities grow drops into soft stalactite-like structures
The interplay between thin film hydrodynamics and solidification produces formidably intricate geophysical structures, such as stalactites and icicles, whose shape is a testimony of their long growth. In simpler settings, liquid films can also produce regular patterns. When coated on the underside of a flat plate, these films are unstable and yield lattices of drops following the Rayleigh-Taylor instability. While this interfacial instability is well-studied in Newtonian fluids, much less is kn…

Stacking X-ray Observations of "Little Red Dots": Implications for their AGN Properties
Minghao Yue, Anna-Christina Eilers, Tonima Tasnim Annana, Christos Panagiotou, Erin Kara, Takamitsu Miyaji
https://arxiv.org/abs/2404.13290

Stacking X-ray Observations of "Little Red Dots": Implications for their AGN Properties
Recent {\em James Webb Space Telescope (JWST)} observations have revealed a population of compact extragalactic objects at $z\gtrsim4$ with red near-infrared colors, which have been dubbed as ``Little Red Dots" (LRDs). The spectroscopically-selected LRDs exhibit broad H$α$ emission lines, which has led to the conclusion that type-I active galactic nuclei (AGN) are harbored in the galaxies' dust-reddened cores. However, other mechanisms, like strong outflowing winds, could also produce broad H$…