Tootfinder

Hermitian $K$-theory and Milnor-Witt motivic cohomology over $\mathbb Z$
H{\aa}kon Kolderup, Oliver R\"ondigs, Paul Arne {\O}stv{\ae}r
https://arxiv.org/abs/2509.16404 http…

Hermitian $K$-theory and Milnor-Witt motivic cohomology over $\mathbb Z$
The theme of this paper is to compute hermitian $K$-groups in terms of the recently developed theory of Milnor-Witt motivic cohomology. Our approach makes use of the very effective slice spectral sequence within the motivic stable homotopy category, which we analyze in detail for base schemes of arithmetic interest. We show a Grothendieck-Riemann-Roch theorem, determine the map between Milnor-Witt and hermitian $K$-theory up to degree five for all fields, and compute the hermitian $K$-groups an…

Recursive polygon subdivision inspired by thin-section mineralogy...
(The area of each polygon is mapped to a color from a gradient. Made with https://thi.ng/geom, see next message for example & source code...)
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Not impressed. $11k is a lot to pay for some place to stuff your dirty kleenix
TikTok Shop Pushes Into Luxury Retail With $11,000 Handbags | Financial Post
https://financialpost.com/pmn/business-pmn/tiktok-shop-pushes-into-luxury-retail-with-11000-handbags

Got the 🇨🇭 #SwissAI #Apertus model - one of the very few completely opensource LLMs - running locally!
Next step: finetuning on historical low-resource languages (like Middle High German).
#FOSS

@… thanks. I never wanted to waste the time of the Core team – simply thinking about reporting Code of Conduct stuff is mentally and emotionally exhausting.
There are very few troublemakers (less than a handful), but it's enough to drive a person like me away. When someone breaks all six ground rules, my usual response is to back away (or …

Zondag, Amsterdam.
Uw Paul trekt iets zwarts aan, niet iets roods. Want boycot Israel.

Pan-STARRS follow-up of the gravitational-wave event S250818k and the lightcurve of SN 2025ulz
J. H. Gillanders, M. E. Huber, M. Nicholl, S. J. Smartt, K. W. Smith, K. C. Chambers, D. R. Young, J. W. Tweddle, S. Srivastav, M. D. Fulton, F. Stoppa, G. S. H. Paek, A. Aamer, M. R. Alarcon, A. Andersson, A. Aryan, K. Auchettl, T. -W. Chen, T. de Boer, A. K. H. Kong, J. Licandro, T. Lowe, D. Magill, E. A. Magnier, P. Minguez, T. Moore, G. Pignata, A. Rest, M. Serra-Ricart, B. J. Shappee, I.…

Pan-STARRS follow-up of the gravitational-wave event S250818k and the lightcurve of SN 2025ulz
Kilonovae are the scientifically rich, but observationally elusive, optical transient phenomena associated with compact binary mergers. Only a handful of events have been discovered to date, all through multi-wavelength (gamma ray) and multi-messenger (gravitational wave) signals. Given their scarcity, it is important to maximise the discovery possibility of new kilonova events. To this end, we present our follow-up observations of the gravitational-wave signal, S250818k, a plausible binary neu…

Tail-robust estimation of factor-adjusted vector autoregressive models for high-dimensional time series
Dylan Dijk, Haeran Cho
https://arxiv.org/abs/2509.22235 https://

Tail-robust estimation of factor-adjusted vector autoregressive models for high-dimensional time series
We study the problem of modelling high-dimensional, heavy-tailed time series data via a factor-adjusted vector autoregressive (VAR) model, which simultaneously accounts for pervasive co-movements of the variables by a handful of factors, as well as their remaining interconnectedness using a sparse VAR model. To accommodate heavy tails, we adopt an element-wise truncation step followed by a two-stage estimation procedure for estimating the latent factors and the VAR parameter matrices. Assuming …