Tootfinder

Natura Urbana XII 🏡
城市自然 XII 🏡
📷 Nikon FE
🎞️Ilford FP4 Plus, expired 1995
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

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Pacific wren, Troglodytes pacificus, along the Merced River in Yosemite National Park
#naturalist #photography #bird #wildlife

If you recognize this figure, you’re definitely a true classic connoisseur—only the most dedicated fans would know!

Requirements on bandpass resolution and measurement precision for LiteBIRD
S. Giardiello, A. Carones, T. Ghigna, L. Pagano, F. Piacentini, L. Montier, R. Takaku, E. Calabrese, D. Adak, E. Allys, A. Anand, J. Aumont, M. Ballardini, A. J. Banday, R. B. Barreiro, N. Bartolo, S. Basak, M. Bersanelli, A. Besnard, M. Bortolami, T. Brinckmann, F. J. Casas, K. Cheung, M. Citran, L. Clermont, F. Columbro, A. Coppolecchia, F. Cuttaia, P. de Bernardis, E. de la Hoz, M. De Lucia, S. Della Torre, E…

Requirements on bandpass resolution and measurement precision for LiteBIRD
In this work, we study the impact of an imperfect knowledge of the instrument bandpasses on the estimate of the tensor-to-scalar ratio $r$ in the context of the next-generation LiteBIRD satellite. We develop a pipeline to include bandpass integration in both the time-ordered data (TOD) and the map-making processing steps. We introduce the systematic effect by having a mismatch between the ``real'', high resolution bandpass $τ$, entering the TOD, and the estimated one $τ_s$, used in the map-ma…

#photography

Computing Periodic Billiard Orbits in $L^p$ Balls via Newton's Method and Smale's $\alpha$-Criterion
Igor Rivin
https://arxiv.org/abs/2507.22251 https://

Computing Periodic Billiard Orbits in $L^p$ Balls via Newton's Method and Smale's $α$-Criterion
We present a computational method for finding and verifying periodic billiard orbits in $L^{p}$ balls ($p>2$) using Newton's method applied to a variational formulation. The orbits are verified with Smale's alpha-criterion, which provides a rigorous certificate of existence. We implement efficient batched computations in JAX and present systematic results for various $p$ and bounce counts $N$. Our experiments reveal striking patterns in the critical-point structure, including a predominance of …

A Plea for History and Philosophy of Statistics and Machine Learning
Hanti Lin
https://arxiv.org/abs/2506.22236 https://arxiv.org/pdf…

A Plea for History and Philosophy of Statistics and Machine Learning
The integration of the history and philosophy of statistics was initiated at least by Hacking (1965) and advanced by Mayo (1996), but it has not received sustained follow-up. Yet such integration is more urgent than ever, as the recent success of artificial intelligence has been driven largely by machine learning -- a field historically developed alongside statistics. Today, the boundary between statistics and machine learning is increasingly blurred. What we now need is integration, twice over…

CARMA: Context-Aware Situational Grounding of Human-Robot Group Interactions by Combining Vision-Language Models with Object and Action Recognition
Joerg Deigmoeller, Stephan Hasler, Nakul Agarwal, Daniel Tanneberg, Anna Belardinelli, Reza Ghoddoosian, Chao Wang, Felix Ocker, Fan Zhang, Behzad Dariush, Michael Gienger
https://ar…

CARMA: Context-Aware Situational Grounding of Human-Robot Group Interactions by Combining Vision-Language Models with Object and Action Recognition
We introduce CARMA, a system for situational grounding in human-robot group interactions. Effective collaboration in such group settings requires situational awareness based on a consistent representation of present persons and objects coupled with an episodic abstraction of events regarding actors and manipulated objects. This calls for a clear and consistent assignment of instances, ensuring that robots correctly recognize and track actors, objects, and their interactions over time. To achiev…

Get a dose of my daily hyperfixation on Albert Hofmann, the Swiss chemist who first synthesized LSD on November 16, 1938, accidentally discovered its effects on April 16, 1943, intentionally took it again on April 19, 1943, and died at the age of 102 on April 29, 2008.
https://en.wikipedia.org/wiki/Albert_H…

Replaced article(s) found for math.DS. https://arxiv.org/list/math.DS/new
[1/1]:
- Local rigidity for symplectic billiards
Daniel Tsodikovich
https://