Tootfinder

🇺🇦 #NowPlaying on #BBC6Music's #6Musics90sForever
Tina Moore:
🎵 Never Gonna Let You Go
#TinaMoore
https://moony.bandcamp.com/track/tina-moore-never-gonna-let-you-go-moony-2012-mix
https://open.spotify.com/track/0bwYKV0xuWcYviq9XJbCex

Comparative analysis of machine learning techniques for feature selection and classification of Fast Radio Bursts
Ailton J. B. J\'unior, J\'eferson A. S. Fortunato, Leonardo J. Silvestre, Thonimar V. Alencar, Wiliam S. Hip\'olito-Ricaldi
https://arxiv.org/abs/2506.18854

Comparative analysis of machine learning techniques for feature selection and classification of Fast Radio Bursts
Fast Radio Bursts (FRBs) are millisecond-duration radio transients of extragalactic origin, exhibiting a wide range of physical and observational properties. Distinguishing between repeating and non-repeating FRBs remains a key challenge in understanding their nature. In this work, we apply unsupervised machine learning techniques to classify FRBs based on both primary observables from the CHIME catalog and physically motivated derived features. We evaluate three hybrid pipelines combining dime…

TheMinerMag: median cost to mine a bitcoin is expected to rise 9.4% QoQ in Q2 2025 to $70K, up from $52K in Q4 2024, squeezing margins for less efficient miners (Brayden Lindrea/Cointelegraph)
https://cointelegraph.com/news/bitcoin-producti…

Systematic Biases from ARM-Based Sensitivity and Imaging in Compton Cameras
Tomonori Ikeda, Tatsuya Sawano, Naomi Tsuji, Yoshitaka Mizumura
https://arxiv.org/abs/2506.18659

Systematic Biases from ARM-Based Sensitivity and Imaging in Compton Cameras
The angular resolution measure (ARM) is widely used in Compton camera analyses to characterize angular uncertainty and to define event selection criteria. However, the ARM distribution is fundamentally different from the point spread function (PSF), which represents the true spatial imaging response of the system on the celestial sphere. In this study, motivated by applications in gamma-ray astrophysics, we investigated the consequences of using ARM-based definitions in sensitivity estimation a…

🇺🇦 #NowPlaying on KEXP's #VarietyMix
Teena Marie:
🎵 Square Biz
#TeenaMarie
https://miketempo.bandcamp.com/track/teena-marie-square-biz-miketempo-main-remix
https://open.spotify.com/track/7KIQKq8H0yENFv6nEa41b5

A bound for the number of basic feasible solutions generated by the simplex method with the maximum distance rule
Tomonari Kitahara
https://arxiv.org/abs/2507.04672

A bound for the number of basic feasible solutions generated by the simplex method with the maximum distance rule
In this paper, we consider the number of different basic solutions generated by the simplex method with the maximum distance rule. The pivoting rule was recently proposed, and in some cases, it was reported to be more efficient than the renowned steepest edge rule. If the problem is nondegenerate, these results provide bounds on the number of iterations. As far as we know, they are the first theoretical bounds for the maximum distance rule.

A structure preserving H-curl algebraic multigrid method for the eddy current equations
Raymond Tuminaro, Christian Glusa
https://arxiv.org/abs/2506.08284 …

A structure preserving H-curl algebraic multigrid method for the eddy current equations
A new algebraic multigrid method (AMG) is presented for solving the linear systems associated with the eddy current approximation to the Maxwell equations. This AMG method extends an idea proposed by Reitzinger and Schoberl. The main feature of the Reitzinger and Schoberl algorithm (RSAMG) is that it maintains null-space properties of the Curl-Curl operator throughout all levels of the AMG hierarchy. It does this by enforcing a commuting relationship involving grid transfers and the discrete gr…

Quasi-periodic flat-band model constructed by molecular-orbital representation
Tomonari Mizoguchi, Yasuhiro Hatsugai
https://arxiv.org/abs/2506.08450 https…

Quasi-periodic flat-band model constructed by molecular-orbital representation
We construct a tight-binding model that hosts both a quasi-periodic nature and marcoscopically-dengenerate zero-energy modes. The model can be regarded as a counterpart of the Aubry-André-Harper (AAH) model, which is a paradigmatic example of the quasi-periodic tight-binding model. Our main focus is on the many-body state where the flat-band-like degenerate zero-energy modes are fully occupied. We find a characteristic sublattice dependence of the particle density distribution. Further, by ana…

20 GeV halo-like excess of the Galactic diffuse emission and implications for dark matter annihilation
Tomonori Totani
https://arxiv.org/abs/2507.07209 htt…

20 GeV halo-like excess of the Galactic diffuse emission and implications for dark matter annihilation
Fifteen years of the Fermi Large Area Telescope (LAT) data in the halo region of the Milky Way (MW) are analyzed to search for gamma rays from dark matter annihilation. Gamma-ray maps within the region of interest ($|l| \le 60$ deg, $10 \le |b| \le 60$ deg) are modeled using point sources, the GALPROP models of cosmic-ray interactions, isotropic background, and templates of Loop I and the Fermi bubbles, and then the presence of a halo-like component is further examined. A st…

🇺🇦 #NowPlaying on #BBC6Music's #NickGrimshaw
Tina Moore:
🎵 Never Gonna Let You Go
#TinaMoore
https://moony.bandcamp.com/track/tina-moore-never-gonna-let-you-go-moony-2012-mix
https://open.spotify.com/track/5Fv096sAU3VnXZIJ0aO90b