Tootfinder

Invariant Rings of $ \mathbb{G}_{a} $-Representations are not always Finitely Generated in Positive Characteristic
Stephen Maguire
https://arxiv.org/abs/2509.15431 https://

Invariant Rings of $ \mathbb{G}_{a} $-Representations are not always Finitely Generated in Positive Characteristic
Hilbert's 14th Problem asks the following question. Given a linear representation $ β: G \to \operatorname{GL}(\mathbf{V}) $ of a linear algebraic group over a field $ k $ is the ring $ S_{k}(\mathbf{V}^{\ast}) $ a finitely generated $ k $-algebra? For reductive groups the answer is yes. However, in general the answer is no. Nagata provided one of the earliest counterexamples to this claim and his counterexample was extended by Shigeru Mukai. However, if $ G $ is equal to $ \mathbb{G}_{a} $ an…

NFL Announces Punishment for Eagles Player After Raiders Loss https://heavy.com/sports/nfl/las-vegas-raiders/eagles-marcus-epps-nfl-punishment/

The critical role of substrates in mitigating the power-efficiency trade-off in near-field thermophotovoltaics
Kartika N. Nimje, Julien Legendre, Michela F. Picardi, Alejandro W. Rodriguez, Georgia T. Papadakis
https://arxiv.org/abs/2509.16048

The critical role of substrates in mitigating the power-efficiency trade-off in near-field thermophotovoltaics
Near-field thermophotovoltaic systems can achieve ultra-high power densities, however, this often comes at the cost of reduced efficiency. We show that this power-efficiency trade-off can be mitigated through substrate engineering. We exploit gradient-based optimization and show that thin lossless metallic films with plasma frequencies resonantly matched to the plasmonic emitter can yield high power and spectral efficiency by spectrally enhancing and confining radiative heat transfer to a narro…

from my link log —
Temporal: getting started with JavaScript’s new date time API.
https://2ality.com/2021/06/temporal-api.html
saved 2021-06-29 https://<…

IRS Direct File,
the electronic system for filing tax returns for free,
will not be offered next year,
the Trump administration has confirmed.
An email sent Monday from IRS official Cynthia Noe to state comptrollers that participate in the Direct File program said that
“IRS Direct File will not be available in Filing Season 2026. No launch date has been set for the future.”
The program developed during Joe Biden’s presidency
was credited by users with…

IRS Direct File won't be available next year for submitting tax returns for free
The Trump administration has decided not to offer the IRS' electronic tax filing system for free next year, and its future is unclear. An IRS official informed state comptrollers in an email Monday that "IRS Direct File will not be available in Filing Season 2026." Treasury Secretary Scott Bessent said better alternatives exist and the private sector can do a better job. The program, developed during Joe Biden's presidency, was praised for making tax filing easy and economical. However, it face…

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FLOWING: Implicit Neural Flows for Structure-Preserving Morphing
Arthur Bizzi, Matias Grynberg, Vitor Matias, Daniel Perazzo, Jo\~ao Paulo Lima, Luiz Velho, Nuno Gon\c{c}alves, Jo\~ao Pereira, Guilherme Schardong, Tiago Novello
https://arxiv.org/abs/2510.09537

FLOWING: Implicit Neural Flows for Structure-Preserving Morphing
Morphing is a long-standing problem in vision and computer graphics, requiring a time-dependent warping for feature alignment and a blending for smooth interpolation. Recently, multilayer perceptrons (MLPs) have been explored as implicit neural representations (INRs) for modeling such deformations, due to their meshlessness and differentiability; however, extracting coherent and accurate morphings from standard MLPs typically relies on costly regularizations, which often lead to unstable traini…

Finished "Lobizona" by Romina Garber. I have extremely mixed feelings about this book. It's a powerful depiction of the fear of living as an undocumented child/teen and it has interesting things to say about rejection, belonging, and the choice between seeking to be recognized for who you are and wanting you blend in enough to be accepted as normal. However, it's also an explicit homage to Harry Potter, and while it doesn't include antisemitic tropes or glorify slavery or even have any anti-trans sentiments I can detect, to me the magical school setup felt forced and I thought it would have been a better book had it not tried to fit that mould. Also, it would have been a super interesting situation to explore trans issues, and while it's definitely fine for it not to do that, the author's praise of Rowling's work has me wondering...
There's a sequel that I think could in theory be amazing, but given the execution of the first book, I think I'll wait a bit before checking it out. By putting her main character in opposition to both ICE in the human world and the magical authorities in the other world, Garber explicitly sets the stage for a revolution standing between her protagonist and any kind of lasting peace. But I'm not confident she's capable of writing that story without relying on some kind of supernatural deus ex machina, which would be disappointing to me, since "a better world if only possible through divine intervention" is an inherently regressive message.
Overall, #OwnVoices fantasy centering an undocumented immigrant is an excellent thing, and I've certainly got a lot of privilege that surely influences my criticism. However, #OwnVoices stuff has a range of levels of craft and political stances, and it can be excellent for some reasons and mediocre for others.
On that point, if anyone reading this has suggestions for fiction books grappling with borders and the carceral state, Is be happy to hear them.
#AmReading

Sounds easy, looks nice: Crossmodal transfer of auditory processing fluency to visual object preference https://link.springer.com/article/10.3758/s13414-025-03177-5

Sounds easy, looks nice: Crossmodal transfer of auditory processing fluency to visual object preference - Attention, Perception, & Psychophysics
Fluent (i.e., rapid and efficient) processing of perceptual objects is vital for humans to successfully navigate their environments. The experience of fluent processing per se tends to trigger positive affect; however, this affect is often misattributed by perceivers to the objects themselves, meaning that easy-to-perceive objects are judged more positively. These fluency-based preference effects have been robustly demonstrated unimodally, and specifically in situations in which fluency and pre…

Colin Cowherd Makes Feelings Clear on Raiders’ Geno Smith https://heavy.com/sports/nfl/las-vegas-raiders/colin-cowherd-feelings-clear-geno-smith/?adt_ei=[email]