Tootfinder

Computational complexity of injective projected entangled pair states
Dylan Harley, Freek Witteveen, Daniel Malz
https://arxiv.org/abs/2509.19963 https://a…

Computational complexity of injective projected entangled pair states
Projected entangled pair states (PEPS) constitute a variational family of quantum states with area-law entanglement. PEPS are particularly relevant and successful for studying ground states of spatially local Hamiltonians. However, computing local expectation values in these states is known to be postBQP-hard. Injective PEPS, where all constituent tensors fulfil an injectivity constraint, are generally believed to be better behaved, because they are unique ground states of spatially local Hamil…

Clarissa didn't explain all this AI slop

Bridging Simulation and Silicon: A Study of RISC-V Hardware and FireSim Simulation
Atanu Barai, Kamalavasan Kamalakkannan, Patrick Diehl, Maxim Moraru, Jered Dominguez-Trujillo, Howard Pritchard, Nandakishore Santhi, Farzad Fatollahi-Fard, Galen Shipman
https://arxiv.org/abs/2509.18472

An earthquake with a magnitude of 4.3 rocked the San Francisco Bay Area early Monday, waking up many people,
with more 22,000 saying they felt it, according to the U.S. Geological Survey.
The quake was centered in Berkeley and struck at 2:56 a.m. with a depth of about 4.8 miles.

4.3 earthquake centered in Berkeley shakes Bay Area: USGS
Did you feel it? A magnitude 4.3 earthquake struck in Berkeley on the Hayward Fault early Monday morning and shook most of the Bay Area. Video shows items knocked off of shelves at several East Bay stores.

Lattice Models for Double Whittaker Polynomials and Motivic Chern Classes
Ben Brubaker, Daniel Bump, Andrew Hardt, Hunter Spink
https://arxiv.org/abs/2509.17312 https://

Lattice Models for Double Whittaker Polynomials and Motivic Chern Classes
We will describe solvable lattice models whose partition functions depend on two sets of variables, $x_1,\cdots,x_n$ and $y_1, y_2, \cdots $ that have different connections with the representation theory of $\text{GL}(n,F)$ where $F$ is a nonarchimedean local field. If the boundary conditions are chosen in one way, they are essentially the Motivic Chern classes that were used very effectively by Aluffi, Mihalcea, Schürmann and Su (AMSS) to study such problems. In particular, using this special…

Motional representation; the ability to predict odor characters using molecular vibrations
Yuki Harada, Shuichi Maeda, Junwei Shen, Taku Misonou, Hirokazu Hori, Shinichiro Nakamura
https://arxiv.org/abs/2509.16245

Motional representation; the ability to predict odor characters using molecular vibrations
The prediction of odor characters is still impossible based on the odorant molecular structure. We designed a CNN-based regressor for computed parameters in molecular vibrations (CNN\_vib), in order to investigate the ability to predict odor characters of molecular vibrations. In this study, we explored following three approaches for the predictability; (i) CNN with molecular vibrational parameters, (ii) logistic regression based on vibrational spectra, and (iii) logistic regression with molecu…

As I rode my motorcycle down Bender Road yesterday, I saw a heck of a lot of piles of basement refuse. I know that the whole area is in a floodplain. They must have gotten hit pretty hard.
#Glendale #Milwaukee

I'll gonna take some time today to personalize the message and send out emails from my own account to hopefully ditch filtering on the target side and make my voice heard. Allowing chat control does not only put privacy and democracy in danger. At times of constant digital attacks from rogue states like Russia, the US, North Korea and China etc. it should be obvious that having weak encryption and standard backdoor access to secure communications channels is an invitation for any malici…

Fight Chat Control (@chatcontrol@mastodon.social)
Angehängt: 1 Bild Germany's position has been reverted to UNDECIDED. Despite expressing concerns about breaking end-to-end encryption, Germany refrained from taking a definitive stance on the Chat Control proposal during the September 12th LEWP meeting. A willingness to negotiate and compromise remains. This is an unfortunate development as Germany is crucial to defeating Chat Control. Please make your voices heard! https://fightchatcontrol.eu/ Source: https://netzpolitik.org/2025/chatko…

"But to me the most extraordinary thing about it is that body. The entire back of the car from the front of the doors rearward including the roof is a single piece of carbon because, as Mallock puts it, ‘I hate shut lines’. It is a vast work of art yet weighs just 19kg.
‘What if you damage it?’ I ask. ‘On balance it’s probably better if you don’t,’ he says."
via:

Rain stopped play - The Intercooler
A 920bhp prototype worth millions on track day tyres on streaming wet roads. What could possibly go wrong? Andrew Frankel tries hard not to find out