Tootfinder

🇺🇦 #NowPlaying on KEXP's #MiddayShow
Ram Jam:
🎵 Black Betty
#RamJam
https://neevcee.bandcamp.com/track/ram-jam-black-betty-neevcee-remix
https://open.spotify.com/track/6kooDsorCpWVMGc994XjWN

Sammelklage: RAM-Taktfrequenzen sind irreführend
In den USA soll sich Corsair nach drei Jahren Rechtsstreit auf einen Vergleich einigen. Verbraucher klagten, dass die Angaben der Taktfrequenz irreführend sei.
https://www.

Single-Cell Universal Logic-in-Memory Using 2T-nC FeRAM: An Area and Energy-Efficient Approach for Bulk Bitwise Computation
Rudra Biswas, Jiahui Duan, Shan Deng, Xuezhong Niu, Yixin Qin, Prapti Panigrahi, Varun Parekh, Rajiv Joshi, Kai Ni, Vijaykrishnan Narayanan
https://arxiv.org/abs/2509.17963

Single-Cell Universal Logic-in-Memory Using 2T-nC FeRAM: An Area and Energy-Efficient Approach for Bulk Bitwise Computation
This work presents a novel approach to configure 2T-nC ferroelectric RAM (FeRAM) for performing single cell logic-in-memory operations, highlighting its advantages in energy-efficient computation over conventional DRAM-based approaches. Unlike conventional 1T-1C dynamic RAM (DRAM), which incurs refresh overhead, 2T-nC FeRAM offers a promising alternative as a non-volatile memory solution with low energy consumption. Our key findings include the potential of quasi-nondestructive readout (QNRO) s…

The idea was (compared to my previous laptop):
- no black or grey, get rid of smudges
- smaller bezels
- wifi compatible with FreeBSD
- nice to have: 16Gb RAM
- lighter
- preferably no ThinkPad (to avoid paying the premium on that)
I can happily report back none of these wishes have been fulfilled with my new acquisition 😜 🤣

Large-Scale Training Data Attribution for Music Generative Models via Unlearning
Woosung Choi, Junghyun Koo, Kin Wai Cheuk, Joan Serr\`a, Marco A. Mart\'inez-Ram\'irez, Yukara Ikemiya, Naoki Murata, Yuhta Takida, Wei-Hsiang Liao, Yuki Mitsufuji
https://arxiv.org/abs/2506.18312

Large-Scale Training Data Attribution for Music Generative Models via Unlearning
This paper explores the use of unlearning methods for training data attribution (TDA) in music generative models trained on large-scale datasets. TDA aims to identify which specific training data points contributed to the generation of a particular output from a specific model. This is crucial in the context of AI-generated music, where proper recognition and credit for original artists are generally overlooked. By enabling white-box attribution, our work supports a fairer system for acknowledg…

RAM : Robust Representation Learning via Adaptive Mask for All-in-One Image Restoration
Zilong Zhang, Chujie Qin, Chunle Guo, Yong Zhang, Chao Xue, Ming-Ming Cheng, Chongyi Li
https://arxiv.org/abs/2509.12039

RAM++: Robust Representation Learning via Adaptive Mask for All-in-One Image Restoration
This work presents Robust Representation Learning via Adaptive Mask (RAM++), a two-stage framework for all-in-one image restoration. RAM++ integrates high-level semantic understanding with low-level texture generation to achieve content-oriented robust restoration. It addresses the limitations of existing degradation-oriented methods in extreme scenarios (e.g., degradations strongly coupled with image structures). RAM++ also mitigates common challenges such as unbalanced performance across task…

Building Transparency in Deep Learning-Powered Network Traffic Classification: A Traffic-Explainer Framework
Riya Ponraj, Ram Durairajan, Yu Wang
https://arxiv.org/abs/2509.18007

Building Transparency in Deep Learning-Powered Network Traffic Classification: A Traffic-Explainer Framework
Recent advancements in deep learning have significantly enhanced the performance and efficiency of traffic classification in networking systems. However, the lack of transparency in their predictions and decision-making has made network operators reluctant to deploy DL-based solutions in production networks. To tackle this challenge, we propose Traffic-Explainer, a model-agnostic and input-perturbation-based traffic explanation framework. By maximizing the mutual information between predictions…

Optimal Pure Differentially Private Sparse Histograms in Near-Linear Deterministic Time
Florian Kerschbaum, Steven Lee, Hao Wu
https://arxiv.org/abs/2507.17017 https://

Optimal Pure Differentially Private Sparse Histograms in Near-Linear Deterministic Time
We introduce an algorithm that releases a pure differentially private sparse histogram over $n$ participants drawn from a domain of size $d \gg n$. Our method attains the optimal $\ell_\infty$-estimation error and runs in strictly $O(n \ln \ln d)$ time in the word-RAM model, thereby improving upon the previous best known deterministic-time bound of $\tilde{O}(n^2)$ and resolving the open problem of breaking this quadratic barrier (Balcer and Vadhan, 2019). Central to our algorithm is a novel pr…

Caught in the Cosmic Web: Evidence for Ram-Pressure Stripping of a Low-Mass Galaxy by the Cosmic Web
Nicholas Luber, Sabrina Stierwalt, George C. Privon, Gurtina Besla, Kelsey E. Johnson, Nitya Kallivayalil, David R. Patton, Mary Putman, Jingyao Zhu
https://arxiv.org/abs/2509.15405

Caught in the Cosmic Web: Evidence for Ram-Pressure Stripping of a Low-Mass Galaxy by the Cosmic Web
We present interferometric radio observations of the neutral atomic gas in AGC 727130, a low-mass, gas-rich, field galaxy lacking significant star-formation. The atomic gas in AGC 727130 displays a pronounced asymmetry, extending well beyond the stellar disk in one direction while remaining relatively undisturbed in the other. Despite proximity to a pair of interacting dwarfs, tidal analysis suggests these neighboring galaxies are not responsible for this pronounced asymmetry. Instead, using a …

On the application of refractive index matching to study the buoyancy-driven motion of spheres
Jibu Tom Jose, Aviel Ben-Harosh, Omri Ram
https://arxiv.org/abs/2509.16384 https:/…

On the application of refractive index matching to study the buoyancy-driven motion of spheres
Refractive index matching (RIM) is a powerful tool for multiphase flow studies as it eliminates optical distortions and enables high-fidelity tomographic measurements near solid-fluid interfaces of freely moving solids in the flow. However, by improving the RIM and optical quality, the solids become effectively invisible, preventing direct identification of their location. To address this limitation, we develop a physics-informed detection framework that locates transparent spheres within time-…

Extracting the geometric backbone of bipartite networks
Luc\'ia S. Ram\'irez, Roya Aliakbarisani, M. \'Angeles Serrano, Mari\'an Bogu\~n\'a
https://arxiv.org/abs/2509.18726

A High Geometric Albedo for LTT9779b Points Towards a Metal-rich Atmosphere and Silicate Clouds
Suman Saha, James S. Jenkins, Vivien Parmentier, Sergio Hoyer, Magali Deleuil, Ian J. M. Crossfield, Pablo A. Pe\~na R., Jose I. Vines, R. Ram\'irez Reyes, Mat\'ias R. D\'iaz
https://arxiv.org/abs/2506.17550

A High Geometric Albedo for LTT9779b Points Towards a Metal-rich Atmosphere and Silicate Clouds
Aims: In this work, we aim to confirm the high albedo of the benchmark ultrahot Neptune LTT9779b using 20 secondary eclipse measurements of the planet observed with CHEOPS. In addition, we perform a search for variability in the reflected light intensity of the planet as a function of time. Methods: First, we used the TESS follow-up data of LTT9779b from three sectors (2, 29, and 69) to remodel the transit signature and estimate an updated set of transit and ephemeris parameters, which were dir…

Improving Cram\'er-Rao Bound And Its Variants: An Extrinsic Geometry Perspective
Sunder Ram Krishnan
https://arxiv.org/abs/2509.17886 https://arxiv.org…

Improving Cramér-Rao Bound And Its Variants: An Extrinsic Geometry Perspective
This work presents a geometric refinement of the classical Cramér-Rao bound (CRB) by incorporating curvature-aware corrections based on the second fundamental form associated with the statistical model manifold. That is, our formulation shows that relying on the extrinsic geometry of the square root embedding of the manifold in the ambient Hilbert space comprising square integrable functions with respect to a fixed base measure offers a rigorous (and intuitive) way to improve upon the CRB and …

"Don't worry about people stealing your ideas. If your ideas are any good,
you'll have to ram them down people's throats."
-- Howard Aiken

Benchmarking Humans and Machines on Complex Multilingual Speech Understanding Tasks
Sai Samrat Kankanala, Ram Chandra, Sriram Ganapathy
https://arxiv.org/abs/2509.17965 https://…

Benchmarking Humans and Machines on Complex Multilingual Speech Understanding Tasks
Auditory attention and selective phase-locking are central to human speech understanding in complex acoustic scenes and cocktail party settings, yet these capabilities in multilingual subjects remain poorly understood. While machine understanding of natural speech has advanced in recent years, questions persist about comprehension of overlapped and mixed-channel speech. We propose a systematic paradigm for studying humans and machines in speech question-answering tasks in multilingual settings …

I find it kinda funny that the 2020 MacBook Air—my work machine (albeit with 16 GB of RAM)—is now described as being “still capable at handling basic tasks like a champ, including streaming video, browsing, and dealing with documents.”
I haven’t noticed #Emacs slowing down, so what do people do that needs so much more computing power!?

I find it kinda funny that the 2020 MacBook Air—my work machine (albeit with 16 GB of RAM)—is now described as being “still capable at handling basic tasks like a champ, including streaming video, browsing, and dealing with documents.”
I haven’t noticed #Emacs slowing down, so what do people do that needs so much more computing power!?

I find it kinda funny that the 2020 MacBook Air—my work machine (albeit with 16 GB of RAM)—is now described as being “still capable at handling basic tasks like a champ, including streaming video, browsing, and dealing with documents.”
I haven’t noticed #Emacs slowing down, so what do people do that needs so much more computing power!?

How much in today's money do you think the Compaq 386 was when it came out (basic version as depicted)?
And how much for the maxed-out version (120MB hard disk, 8MB RAM, math co-processor)?

Das olle #MacbookPro 13 Zoll aus 2015/2016 mit #Intel i5 und 16gb RAM läuft ab heute mit #LinuxMint
Genial schnell. Tolle Auflösung. Geile Hardware.

DESI DR1 Ly$\alpha$ forest: 3D full-shape analysis and cosmological constraints
Andrei Cuceu, Hiram K. Herrera-Alcantar, Calum Gordon, C\'esar Ram\'irez-P\'erez, E. Armengaud, A. Font-Ribera, J. Guy, B. Joachimi, P. Martini, S. Nadathur, I. P\'erez-R\`afols, J. Rich, J. Aguilar, S. Ahlen, A. Anand, S. Bailey, A. Bault, D. Bianchi, A. Brodzeller, D. Brooks, J. Chaves-Montero, T. Claybaugh, K. S. Dawson, A. de la Macorra, J. Della Costa, P. Doel, S. Ferraro, J. E. Forero-…

DESI DR1 Ly$α$ forest: 3D full-shape analysis and cosmological constraints
We perform an analysis of the full shapes of Lyman-$α$ (Ly$α$) forest correlation functions measured from the first data release (DR1) of the Dark Energy Spectroscopic Instrument (DESI). Our analysis focuses on measuring the Alcock-Paczynski (AP) effect and the cosmic growth rate times the amplitude of matter fluctuations in spheres of $8$ $h^{-1}\text{Mpc}$, $fσ_8$. We validate our measurements using two different sets of mocks, a series of data splits, and a large set of analysis variation…

@… DOOM on an external charging station: https://mastodon.social/@Atc1441/115051397563188886

Atc1441 (@Atc1441@mastodon.social)
Attached: 1 image DOOM on the ANKER Prime Charging station😅 The internal SWM34S MCU is just way too nice! 8MB RAM + 16MB Flash directly mapped to memory goes brrrr Video on Youtube: https://youtu.be/MdOU8SqCqeY

Numerical semigroup tree: type-representation
Jonathan Chappelon, Jorge L. Ram\'irez Alfons\'in, Dumitru I. Stamate
https://arxiv.org/abs/2507.15006

Numerical semigroup tree: type-representation
In this paper, we introduce a new depicting of the so-called numerical semigroup tree $\mathcal T$. By exploring computationally this improved picture, relying on the type notion of a semigroup, we found that the number of semigroups of genus $g$ and type $t$ is constante when $t$ is close to $g$ while $g$ grows. We also study the unimodularity of various sequences as well as the behavior of the leaves in $\mathcal T$. We put forward several conjectures that are supported by various computation…

I've started mostly hibernating my laptop now (save state to disk and power off completely) instead of just suspending it to memory.
First were the days when lol linux hibernate doesn't even work
Then it was laptop HDDs which are painfully slow
Then we had SSDs, but they were really small. Who could spare enough space for a RAM image?
Now I have 64G of RAM and an NVMe where the smallest part I could buy was twice as big as I need, and twice that is only 43% mo…

Schlecht für AMDs Budget-Plattform AM4: DDR4-RAM soll noch viel teurer werden
Arbeitsspeicher vom Typ DDR4, LPDDR4X und GDDR6 soll in den nächsten Monaten erheblich im Preis steigen. Von bis zu 43 Prozent ist die Rede.

Pressure-Induced Low-Spin State Destabilization and Piezo-Chromic Effect in an Iron(II) Spin Crossover Complex with Pyrazol-Pyridine-Triazolate Coordination Core
Hanlin Yu, Maksym Seredyuk, Nan Ma, Katerina Znoviak, Nikita Liedienov, M. Carmen Mu\~noz, Iv\'an da Silva, Francisco-Javier Valverde Mu\~noz, Ricardo-Guillermo Torres Ram\'irez, Elzbieta Trzop, Wei Xu, Quanjun Li, Bingbing Liu, Georgiy Levchenko, J. Antonio Real

Pressure-Induced Low-Spin State Destabilization and Piezo-Chromic Effect in an Iron(II) Spin Crossover Complex with Pyrazol-Pyridine-Triazolate Coordination Core
Rapidly developing science and technology demand new materials with versatile and promising properties for practical applications. In this context, pseudo-octahedral iron(II) spin crossover (SCO) complexes are particularly appealing - not only for their fundamental scientific interest but also for their potential as key components in the development of multifunctional switchable molecular materials and novel technological applications. This work presents the synthesis and structure of a new mon…

Improving Cram\'er-Rao Bound With Multivariate Parameters: An Extrinsic Geometry Perspective
Sunder Ram Krishnan
https://arxiv.org/abs/2509.18978 https://

A new family of seniority-restricted coupled cluster methods
Ram\'on Alain Miranda-Quintana, Rugwed Lokhande, Carlos E. V. de Moura, Krisztina Zsigmond, Paul W. Ayers
https://arxiv.org/abs/2509.15314

A new family of seniority-restricted coupled cluster methods
We introduce a novel class of coupled cluster (CC) methods that leverage the seniority concept to enhance efficiency and accuracy in electronic structure calculations. While existing approaches, such as the pair coupled cluster doubles (pCCD) method, are limited to seniority-zero (Ω = 0) wavefunctions,1 we propose a more flexible framework: seniority-restricted coupled cluster (sr-CC). This new methodology selectively constrains the seniority sectors accessible through excitation operators in …

WALLABY Pilot Survey: the extensive interaction of NGC 4532 and DDO 137 with the Virgo cluster
L. Staveley-Smith, K. Bekki, A. Boselli, L. Cortese, N. Deg, B. -Q. For, K. Lee-Waddell, T. O'Beirne, M. E. Putman, C. Sinnott, J. Wang, T. Westmeier, O. I. Wong, B. Catinella, H. D\'enes, J. Rhee, L. Shao, A. X. Shen, K. Spekkens
https://

WALLABY Pilot Survey: the extensive interaction of NGC 4532 and DDO 137 with the Virgo cluster
As part of the pilot survey of the Widefield ASKAP L-band Legacy All-sky Survey (WALLABY), high-resolution neutral atomic hydrogen (HI) observations of the dwarf galaxy pair NGC 4532/DDO 137 (WALLABY J123424+062511) have revealed a huge (48 kpc) bridge of gas between the two galaxies, as well as numerous arms and clouds which connect with the even longer (0.5 Mpc) tail of gas previously discovered with the Arecibo telescope. Our modelling suggests that a combination of ram pressure and tidal fo…

45-kilogram bomber drones – a nightmare for Russians! #shorts: https://benborges.xyz/2025/09/17/kilogram-bomber-drones-a-nightmare.html

Layer-selective Cooper pairing in an alternately stacked transition metal dichalcogenide
Haojie Guo, Sandra Sajan, Iri\'an S\'anchez-Ram\'irez, Tarushi Agarwal, Alejandro Blanco Peces, Chandan Patra, Maia G. Vergniory, Rafael M. Fernandes, Ravi Prakash Singh, Fernando de Juan, Maria N. Gastiasoro, Miguel M. Ugeda
https://

Layer-selective Cooper pairing in an alternately stacked transition metal dichalcogenide
Multigap superconductivity emerges when superconducting gaps form on distinct Fermi surfaces. Arising from locally overlapping atomic orbitals, multiple superconducting bands introduce a new internal degree of freedom in the material that, however, escapes external control due to their coexistence in real space in the known multigap superconductors. Here, we show that the layered superconductor 4Hb-TaSSe - composed of alternating trigonal (H) and octahedral (T) polymorph layers - is a multigap …

Optimal polynomial approximants and orthogonal polynomials on the unit circle. An electrostatic approach
Ram\'on Orive, Joaqu\'in S\'anchez-Lara, Daniel Seco
https://arxiv.org/abs/2507.15488

Optimal polynomial approximants and orthogonal polynomials on the unit circle. An electrostatic approach
We explore the connection between two seemingly distant fields: the set of cyclic functions $f$ in a Hilbert space of analytic functions over the unit disc $\D$, on the one hand, and the families of orthogonal polynomials for a weight on the unit circle $\T$ (OPUC), on the other. This link is established by so-called Optimal Polynomial Approximants (OPA) to $1/f$, that is, polynomials $p_n$ minimizing the norm of $1-p_nf$, among all polynomials $p_n$ of degree up to a given $n$. Here, we focu…

The effects of temperature and rainfall anomalies on Mexican inflation
Arango-Castillo Lenin, Mart\'inez-Ram\'irez Francisco
https://arxiv.org/abs/2507.14420

The effects of temperature and rainfall anomalies on Mexican inflation
This paper measures the effects of temperature and precipitation shocks on Mexican inflation using a regional panel. To measure the long-term inflationary effects of climate shocks, we estimate a panel autoregressive distributed lag model (panel ARDL) of the quarterly variation of the price index against the population-weighted temperature and precipitation deviations from their historical norm, computed using the 30-year moving average. In addition, we measure the short-term effects of climate…

Human brains are not computers, but thinking of mine as a system with wildly insufficient ram and a slow, buggy swap that's always freezing and needing a full reboot is explaining a lot for me right now. #adhd

This "pattern" here appears to be unused:
https://github.com/u-boot/u-boot/blob/021783860f7e628f7c4e0c101707cd4250e6d61f/drivers/ram/rockchip/sdram_rv1126.c#L1656
Well, it is used in the RK3566…

u-boot/drivers/ram/rockchip/sdram_rv1126.c at 021783860f7e628f7c4e0c101707cd4250e6d61f · u-boot/u-boot
"Das U-Boot" Source Tree. Contribute to u-boot/u-boot development by creating an account on GitHub.

Reverse Engineering of Music Mixing Graphs with Differentiable Processors and Iterative Pruning
Sungho Lee, Marco Mart\'inez-Ram\'irez, Wei-Hsiang Liao, Stefan Uhlich, Giorgio Fabbro, Kyogu Lee, Yuki Mitsufuji
https://arxiv.org/abs/2509.15948

Reverse Engineering of Music Mixing Graphs with Differentiable Processors and Iterative Pruning
Reverse engineering of music mixes aims to uncover how dry source signals are processed and combined to produce a final mix. We extend the prior works to reflect the compositional nature of mixing and search for a graph of audio processors. First, we construct a mixing console, applying all available processors to every track and subgroup. With differentiable processor implementations, we optimize their parameters with gradient descent. Then, we repeat the process of removing negligible process…

Improving OCR using internal document redundancy
Diego Belzarena, Seginus Mowlavi, Aitor Artola, Camilo Mari\~no, Marina Gardella, Ignacio Ram\'irez, Antoine Tadros, Roy He, Natalia Bottaioli, Boshra Rajaei, Gregory Randall, Jean-Michel Morel
https://arxiv.org/abs/2508.14557

Improving OCR using internal document redundancy
Current OCR systems are based on deep learning models trained on large amounts of data. Although they have shown some ability to generalize to unseen data, especially in detection tasks, they can struggle with recognizing low-quality data. This is particularly evident for printed documents, where intra-domain data variability is typically low, but inter-domain data variability is high. In that context, current OCR methods do not fully exploit each document's redundancy. We propose an unsupervis…

A triple convolution sum of the divisor function
Bikram Misra, M. Ram Murty, Biswajyoti Saha
https://arxiv.org/abs/2508.13082 https://arxiv.org/pdf/2508.13…

A triple convolution sum of the divisor function
We study the triple convolution sum of the divisor function given by $$\sum_{n\leq x} d(n)d(n-h)d(n+h)$$ for $h\neq 0$ and $d(n)$ denotes the number of positive divisors of $n$. Based on algebraic and geometric considerations, Browning conjectured that the above sum is asymptotic to $c_hx(\log x)^3$, for a suitable constant $c_h\neq 0$, as $x\to \infty$. This conjecture is still unproved. The purpose of this paper is two-fold. First, we show that there are positive constants $A,B$ such that $$A…

Ight, I need some help picking an approach for my homelab.
Right now I've got 3 raspberry pis (1gb RAM) always on and 2 optiplexes running proxmox which are only on when needed.
Trying to work out whether I should move everything to one of my proxmox machines and just leave a single pi somewhere running a thing to act as a tiebreaker or just leave as is rn.
I run docker on pis with HA, pihole, some discord bots, status things but am kinda limited rn with RAM.
…

I may have had an interesting idea! Quick, hand me that screw driver, I'll ram it through my temple!

Fermilab PIP-II CDS and CM Cryogenic Controls System
Pratik Patel (Fermi National Accelerator Laboratory, Batavia, Illinois, United States), Ram Dhuley (Fermi National Accelerator Laboratory, Batavia, Illinois, United States), Ahmed Faraj (Fermi National Accelerator Laboratory, Batavia, Illinois, United States), Alexander Martinez (Fermi National Accelerator Laboratory, Batavia, Illinois, United States), Vrushank Patel (Fermi National Accelerator Laboratory, Batavia, Illinois, United S…

Fermilab PIP-II CDS and CM Cryogenic Controls System
Details on Final design for Cryogenic Electrical & Controls System for Fermilab' s next-gen particle accelerator PIP-II. Electrical Controls System includes instrumentation and controls of Cryogenics Distribution System and Cryomodules. Design includes Siemens PCS7 Controls System with 26 Remote IO Rittal Cabinets and 48 Relay Racks for Temperature Readouts, Valve Positioners, Level, Heater Controls etc. Electrical Drawings and Design have been completed with focus now on fabrication of the 26 …

Republicans invoke ‘nuclear option’ in push to change Senate rules

The rules change will allow the Senate to confirm multiple people at once,
to quickly ram through nearly 150 Trump nominees awaiting floor votes
https://www.washingtonpost.com/politi…

Republicans invoke ‘nuclear option’ in push to change Senate rules
The rules change will allow the Senate to confirm multiple people at once, helping to clear a backlog of nearly 150 Trump nominees awaiting floor votes.

Any Epson-HX20 people got a copy of the _eprom_ version of the Intext manual?
Mine has the Eprom in the expansion box, and it starts up with the error 'Memory too small. See Manual.' FRE(0) shows 29275 - so that I guess means at least BASIC sees the expansion RAM.
#retrocomputing

DDR4-Preise für Budget-PCs steigen weiter und explodieren bei Fernsehern
Schlechte Nachrichten für günstige PCs. Die Preise für DDR4-RAM steigen weiter. Noch härter soll es Konsumenten-Elektronik treffen.

Hawking time crystal
Juan Ram\'on Mu\~noz de Nova, Fernando Sols
https://arxiv.org/abs/2507.10862 https://arxiv.org/pdf/2507.1086…

Hawking time crystal
We report the numerical observation of a time crystal in a quantum black-hole laser (BHL), where the genuine spontaneous character of the symmetry breaking stems from the self-amplification of spontaneous Hawking radiation. The resulting Hawking time crystal (HTC) is characterized by the periodic dependence of the out-of-time density-density correlation function, while equal-time correlations are time-independent because they embody averages over different realizations with a random oscillation…

Just added a second 8-GB SDRAM card to my desktop computer. Yeah, I can crawl around on the floor under the desk better than I used to be able to. :-) We'll see if the new RAM solves the recent ceaseless drive churning I've been enduring lately. So far, it seems to have done so! The computer is now four years old, but it still seems pretty fast, or it did until this churning started up recently. (Yes, I checked for viruses and ran other system integrity tests, of course.)

I'm pretty sure everyone has forgotten how to drive. In the past week I've seen 5 people run red lights and 4 people completely disregard how 4-way stops working and try to ram into me.

Por estos días sumé a mis servicios selfhosteados wallabag, una aplicación para guardar pšginas web estilo pocket. También probé linkwarden, que si bien es mšs bonita y tiene mšs funciones, consume considerablemente mšs recursos, especialmente RAM.
#Wallabag #Linkwarden

Gravity-driven flux of particles through apertures
Ram Sudhir Sharma, Alexandre Leonelli, Kevin Zhao, Eckart Meiburg, Alban Sauret
https://arxiv.org/abs/2509.14415 https://

Gravity-driven flux of particles through apertures
The gravity-driven discharge of granular material through an aperture is a fundamental problem in granular physics and is classically described by empirical laws with different fitting parameters. In this Letter, we disentangle the mass flux into distinct velocity and packing contributions by combining three-dimensional experiments and simulations. We define a dimensionless flux ratio that captures confinement-driven deviations from a free-fall limit, which is recovered when the aperture is lar…

GTA -- An ATSP Method: Shifting the Bottleneck from Algorithm to RAM
Wissam Nakhle
https://arxiv.org/abs/2509.13327 https://arxiv.org/pdf/2509.13327…

GTA - An ATSP Method: Shifting the Bottleneck from Algorithm to RAM
We present a scalable, high-performance algorithm that deterministically solves large-scale instances of the Traveling Salesman problem (in its asymmetric version, ATSP) to optimality using commercially available computing hardware. By combining an efficient heuristic warm start, capable of achieving near-optimality within seconds in some cases, with a subtour elimination strategy that removes the need for traditional MTZ constraints, our approach consistently resolves instances up to 5,000 nod…

Framework Desktop review: the $1,099 desktop is compact and easy to assemble with solid performance and power efficiency, but CPU, GPU, and RAM are soldered (Andrew Cunningham/Ars Technica)
https://arstechnica.com/gadgets/2025/0

Review: Framework Desktop is a mash-up of a regular desktop PC and the Mac Studio
Size matters most for Framework’s first stab at a desktop workstation/gaming PC.

a pox on the house of the people who decided that soldered ram on laptops was a good idea

The energy dependence of exclusive heavy vector meson photoproduction cross-sections and NLO BFKL evolution
Martin Hentschinski, Ricardo Rangel Ram\'irez
https://arxiv.org/abs/2508.11545

The energy dependence of exclusive heavy vector meson photoproduction cross-sections and NLO BFKL evolution
We study the energy dependence of the cross-section for exclusive photoproduction of vector mesons $J/ψ$ and $Υ$, using a solution to the next-to-leading order (NLO) Balitsky-Fadin-Kuraev-Lipatov (BFKL) equation. Our goal is to use BFKL evolution as a benchmark to provide evidence for the presence of non-linear QCD dynamics and signs for the onset of gluon saturation at highest center of mass energies. Our approach determines initial conditions for the proton from the Bartels-Golec Biernat-Ko…

I had a android device running android 8.1. That little guy had 1GB of RAM and 8GB of internal storage (extended to 32 GB with SD card).
I was using it as a offline music player, keeping backups of my keepass and totp database. And few other things.
That little guy gave up today🥲
I'm gonna miss it😿
It had features that modern smartphones don't have, like
1.Removable battery 🔋
2.Wired Headphone support
3. Micro SD card support

XAI-Driven Spectral Analysis of Cough Sounds for Respiratory Disease Characterization
Patricia Amado-Caballero, Luis Miguel San-Jos\'e-Revuelta, Mar\'ia Dolores Aguilar-Garc\'ia, Jos\'e Ram\'on Garmendia-Leiza, Carlos Alberola-L\'opez, Pablo Casaseca-de-la-Higuera
https://arxiv.org/abs/2508.14949

XAI-Driven Spectral Analysis of Cough Sounds for Respiratory Disease Characterization
This paper proposes an eXplainable Artificial Intelligence (XAI)-driven methodology to enhance the understanding of cough sound analysis for respiratory disease management. We employ occlusion maps to highlight relevant spectral regions in cough spectrograms processed by a Convolutional Neural Network (CNN). Subsequently, spectral analysis of spectrograms weighted by these occlusion maps reveals significant differences between disease groups, particularly in patients with COPD, where cough patt…

#NixOS 25.05 system update (approx. for 4 weeks) took 1h7min on my lenovo #x260 i5 (16GB RAM).
I have no idea why the performance is so poor on that machine in contrast to T490 with same NixOS configuration.
I'll see after I switched back to

Top tip for improving openSUSE performance on somwhat-constrained systems (e.g. Ryzen 7 3700C/16GB RAM ex-Chromebook): get rid of btrfs. The constant fs housekeeping tasks grind it to a halt, and it's not the quickest to begin with. This thing absolutely FLIES with XFS. Oh no, no snapshots, guess I'd better just treat it like every previous Linux system I've ever had :P

Characterization of groupoid categories in terms of its category of $\mathcal{C}$-sets
J. Miguel Calder\'on, Alberto Gerardo Raggi-C\'ardenas, Itzel Rosas, Ram\'on H. Ruiz-Medina
https://arxiv.org/abs/2508.10162

Characterization of groupoid categories in terms of its category of $\mathcal{C}$-sets
A $\mathcal{C}$-set is a functor from the category $\mathcal{C}$ to the category of finite sets and functions. The category of $\mathcal{C}$-sets, $\mathcal{C} - \operatorname*{set}$, is defined as the category whose objects are $\mathcal{C}$-sets, and whose morphisms are natural transformations between them. In this document we provide some concise characterizations of groupoids in terms of their category of $\mathcal{C}$-sets.

RAM-W600: A Multi-Task Wrist Dataset and Benchmark for Rheumatoid Arthritis
Songxiao Yang, Haolin Wang, Yao Fu, Ye Tian, Tamotsu Kamishima, Masayuki Ikebe, Yafei Ou, Masatoshi Okutomi
https://arxiv.org/abs/2507.05193

RAM-W600: A Multi-Task Wrist Dataset and Benchmark for Rheumatoid Arthritis
Rheumatoid arthritis (RA) is a common autoimmune disease that has been the focus of research in computer-aided diagnosis (CAD) and disease monitoring. In clinical settings, conventional radiography (CR) is widely used for the screening and evaluation of RA due to its low cost and accessibility. The wrist is a critical region for the diagnosis of RA. However, CAD research in this area remains limited, primarily due to the challenges in acquiring high-quality instance-level annotations. (i) The w…

Starting to look more seriously into the STM32H750/753.
The 753 is the part I really want to use, the 750 is the same die fused down to disable all but the first 128 kB of flash. But I picked up several of them during the chip shorage and I feel like I should put them to use.
They're mostly comparable to the H735 I use now. Key differences:
* CPU Fmax down from 550 to 480 MHz
* RAM nearly doubled from 564 to 1024 kB
* Flash increased from 1 MB to 2 MB in the 75…

Mastodon tab uses 14GB (and then some). I'm pretty sure this didn't use to be the case?
@…

XUE 10. The CO$_2$-rich terrestrial planet-forming region of an externally irradiated Herbig disk
Jenny Frediani, Arjan Bik, Mar\'ia Claudia Ram\'irez-Tannus, Rens Waters, Konstantin V. Getman, Eric D. Feigelson, Bayron Portilla-Revelo, Beno\^it Tabone, Thomas J. Haworth, Andrew Winter, Thomas Henning, Giulia Perotti, Alexis Brandeker, Germ\'an Chaparro, Pablo Cuartas-Restrepo, Sebasti\'an Hern\'andez, Michael A. Kuhn, Thomas Preibisch, Veronica Roccatagliata, Sierk…

XUE 10. The CO$_2$-rich terrestrial planet-forming region of an externally irradiated Herbig disk
We investigate the James Webb Space Telescope (JWST) MIRI MRS gas molecular content of an externally irradiated Herbig disk, the F-type XUE 10 source, in the context of the eXtreme UV Environments (XUE) program. XUE 10 belongs to the massive star cluster NGC 6357 (1.69 kpc), where it is exposed to an external far-ultraviolet (FUV) radiation $\approx$ 10$^3$ times stronger than in the Solar neighborhood. We modeled the molecular features in the mid-infrared spectrum with Local Thermodynamic Equi…

#GrapheneOS #Android

#humor #comedy

Open Weight language models are released by OpenAI.
Interesting what the experiences will be on local configurations , 16GB (V)RAM is a lot but attainable for a lot of people.
#openai

GitHub - openai/gpt-oss: gpt-oss-120b and gpt-oss-20b are two open-weight language models by OpenAI
gpt-oss-120b and gpt-oss-20b are two open-weight language models by OpenAI - openai/gpt-oss

🇺🇦 Auf radioeins läuft...
Charley Crockett:
🎵 Age Of The Ram (Theme)
#NowPlaying #CharleyCrockett
https://open.spotify.com/track/2EzWqsmeojTsfNS9ZQc6YZ

Towards Memory Specialization: A Case for Long-Term and Short-Term RAM
Peijing Li, Muhammad Shahir Abdurraman, Rachel Cleaveland, Sergey Legtchenko, Philip Levis, Ioan Stefanovici, Thierry Tambe, David Tennenhouse, Caroline Trippel
https://arxiv.org/abs/2508.02992

Towards Memory Specialization: A Case for Long-Term and Short-Term RAM
Both SRAM and DRAM have stopped scaling: there is no technical roadmap to reduce their cost (per byte/GB). As a result, memory now dominates system cost. This paper argues for a paradigm shift from today's simple memory hierarchy toward specialized memory architectures that exploit application-specific access patterns. Rather than relying solely on traditional off-chip DRAM and on-chip SRAM, we envisage memory systems equipped with additional types of memory whose performance trade-offs benefit…

Replaced article(s) found for nlin.PS. https://arxiv.org/list/nlin.PS/new
[1/1]:
- Simultaneous symmetry breaking in spontaneous Floquet states: temporal Floquet-Nambu-Goldstone mo...
Juan Ram\'on Mu\~noz de Nova, Fernando Sols

Replaced article(s) found for q-bio.QM. https://arxiv.org/list/q-bio.QM/new
[1/1]:
- A Reanalysis of the FDA's Benefit-Risk Assessment of Moderna's mRNA-1273 COVID Vaccine: For 18-25...
Paul S. Bourdon, Ram Duriseti, H. Christian Gromoll, Dyana K. Dalton, Kevin Bardosh, Allison E…

A comparative analysis of the effect of bobbin topography in the transmission performance capability of Hybrid corrugated plane type transmission surface for MR Clutches
Loyad Joseph Losan, Saddala Reddy Tharun, Jithin Vijaykumar, Murthi Ram Chandra Reddy, Mood Rahul, Jagadeesha T
https://arxiv.org/abs/2509.13611

A comparative analysis of the effect of bobbin topography in the transmission performance capability of Hybrid corrugated plane type transmission surface for MR Clutches
Magneto-Rheological (MR) fluid based devices work on the principle of changing the rheological properties of MR fluid (MRF) using magnetic field excitation generated from an electromagnet. The electromagnet is usually created with the aid of copper coils wound on a low magnetic permeable spindle structure referred to as bobbin. In this paper, an attempt has been made to investigate the different bobbin configurations and its effect on the torque transmissibility of a MR clutch (MRC). A hybrid c…

If anyone needed that data point, #Flang build (using #Clang on AArch64) with -j96 peaks at 102 GiB RAM use.
#Gentoo

Lipschitz spaces over non-porous sets
Ram\'on J. Aliaga
https://arxiv.org/abs/2507.12119 https://arxiv.org/pdf/2507.12119

Lipschitz spaces over non-porous sets
Let $M$ be a subset of $\mathbb{R}^n$. If $M$ is not porous, in particular if it has positive $n$-dimensional Lebesgue measure, we prove that the Lipschitz spaces $\mathrm{Lip}_0(M)$ and $\mathrm{Lip}_0(\mathbb{R}^n)$ are linearly isomorphic. The result also holds more generally if $\mathbb{R}^n$ is replaced with a Carnot group equipped with its Carnot-Carathéodory metric.

Gdyby ktoś potrzebował takich danych, to budowanie Flanga (przy pomocy Clanga, na AArch64) z -j96 powoduje maksymalne użycie RAM-u na poziomie 102G.
#Gentoo #Flang #Clang

Nature of High Equivalent Width Emitters in the Epoch of Reionization Revealed by JWST Medium-band Imaging
Kazuki Daikuhara, Takahiro Morishita, Tadayuki Kodama, Ranga-Ram Chary, Masayuki Akiyama, Jose. M. P\'erez-Mart\'inez
https://arxiv.org/abs/2507.13456

Nature of High Equivalent Width Emitters in the Epoch of Reionization Revealed by JWST Medium-band Imaging
Extreme emission line galaxies (EELGs) at high redshifts are considered key contributors to cosmic reionization at $z>6$ due to their higher ionization efficiencies. We have identified 119 H$β$ + [OIII] emitters at $z\sim7$ selected by a flux excess in the medium-band filter F410M in the public James Webb Space Telescope Cycle-1 fields. Our emitters exhibit a wide range in rest-frame H$β$ + [OIII] equivalent width (EWs), 420 $<$ EW$_{0}$/Å $<$ 6850 (with the median value of $\sim1700$ Å). A…

Class numbers of Imaginary bicyclic biquadratic number fields
Anuj Jakhar, Ravi Kalwaniya, Mahesh Kumar Ram
https://arxiv.org/abs/2509.13153 https://arxiv.…

Class numbers of Imaginary bicyclic biquadratic number fields
For any fixed positive integer $n$, we provide a method to compute all imaginary bicyclic biquadratic number fields with class number $n$, along with their class group structures, using the list of all imaginary quadratic number fields whose class numbers divide $2n$. We apply this method to list all imaginary bicyclic biquadratic number fields with class numbers $4$, $6$ and $7$. We also present the class group structure of each subfield of these fields.

SU(1,1) coherent states for the Dunkl- Klein-Gordon equation in its canonical form
M. Salazar-Ram\'irez, J. A. Mart\'inez-Nu\~no, MR Cordero-L\'opez
https://arxiv.org/abs/2507.10947

SU(1,1) coherent states for the Dunkl- Klein-Gordon equation in its canonical form
Using representation-theoretic techniques associated with the $\mathfrak{su}(1,1)$ symmetry algebra, we construct Perelomov coherent states for the Dunkl-Klein-Gordon equation in its canonical form, which is free of first-order Dunkl derivatives. Our analysis is restricted to the even-parity sector and to the regime where the curvature constant $R$ is much smaller than the system's kinetic energy. The equation under consideration emerges from a matrix-operator framework based on Dirac gamma mat…

Thermal-nonthermal transition of the charged particle production in pp collisions
J. Alonso Tlali, D. Rosales Herrera, J. R. Alvarado Garc\'ia, A. Fern\'andez T\'ellez, C. Pajares, J. E. Ram\'irez
https://arxiv.org/abs/2509.14175

Thermal-nonthermal transition of the charged particle production in pp collisions
We determine the internal energy of charged particle production in minimum bias pp collisions using a thermostatistical approach by analyzing the $p_\text{T}$ spectrum reported by the ALICE Collaboration across LHC energies. To do this, we define temperature as the slope of the $p_\text{T}$ spectrum at low $p_\text{T}$ values and Shannon's entropy as the system's entropy, calculated considering the normalized $p_\text{T}$ spectrum. We found that the internal energy for the Hagedorn and Tricomi …

OpenAI releases gpt-oss-120b and gpt-oss-20b, its first open-weight models since GPT-2; the smaller model can run locally on a consumer device with 16GB of RAM (Reece Rogers/Wired)
https://www.wired.com/story/openai-just-released-its-first-open-wei…

OpenAI Just Released Its First Open-Weight Models Since GPT-2
The models, gpt-oss-120b and gpt-oss-20b, represent a major shift for the AI company.

Replaced article(s) found for cs.SD. https://arxiv.org/list/cs.SD/new
[1/1]:
- Instruct-MusicGen: Unlocking Text-to-Music Editing for Music Language Models via Instruction Tuning
Zhang, Ikemiya, Choi, Murata, Mart\'inez-Ram\'irez, Lin, Xia, Liao, Mitsufuji, Dixon

Exploring new construction schemes for extended-hierarchy CI (ehCI) wavefunctions
Rugwed A. Lokhande, Carlos E. V. de Moura, Pratiksha B. Gaikwad, Ram\'on Alain Miranda-Quintana
https://arxiv.org/abs/2509.15190

Exploring new construction schemes for extended-hierarchy CI (ehCI) wavefunctions
Following the work of Loos et al. on hierarchy CI (hCI) we propose an extended way of partitioning the Hilbert space by combining the excitation and the seniority sectors in a more general way. We define the hierarchy parameter, h, involving two "weights" (alphas), measuring the importance of excitation (e) and seniority (s) contributions to the wavefunction according to: h = α1.e + α2.s. We test these new CI methods on the dissociation of chemical systems and analyze them based on the import…

The Russification of America
How the 2025 Budget Shattered the Last Illusions of Democracy https://medium.com/@spqesq/the-russification-of-america-2beef3b63be7

soldered ram is the absolute fucking WORST, and i'm really glad to see this: https://www.ifixit.com/News/95078/lpcamm2-memory-is-finally-here

LPCAMM2 Is Finally Here, and It’s a Big Deal
LPCAMM2 promises to be the thin, fast, efficient, and REPAIRABLE laptop memory standard of the future. Today, we take apart the first laptop to actually use it.

Super-Refresh: Neue RTX-5000-Grafikkarten sollen mit mehr Speicher kommen
Die Super-Versionen der GeForce RTX 5070, 5070 Ti und 5080 sollen 50 Prozent mehr RAM bekommen und schon 2025 erscheinen.
ht…

Just download some RAM
https://www.servethehome.com/kyocera-pegatron-and-smart-show-cxl-over-optics-at-computex-2025/

FIRST − Susan Collins voted to bring Trump’s heartless budget to the Senate floor
NOW − Her Senate colleagues voted to ram the budget through the Senate – all thanks to her vote to advance the bill
I’m calling for 1,000 gifts in the next 90 minutes to make Sen. Collins rue the day that she put Trump ahead of Maine. Will you rush an emergency $15? >>
Hear me when I say this: The stakes have never been higher, and this win is in sight.
Susan Collins turned her bac…

Because it is inevitable that they are going to ram Wayland down our throats whether we want it or not, I have spent the evening working on some glue to launch XScreenSavers after an idle period. (Not locking, just demos.)
XScreenSaver accepts -activate and -deactivate commands, so I'm just watching for idle and running those commands in response. The idle logic works well (but requires privileged access to /dev/input/event* devices).
What has cost me most of the evening is p…

A resource-efficient quantum-walker Quantum RAM
Giuseppe De Riso, Giuseppe Catalano, Seth Lloyd, Vittorio Giovannetti, Dario De Santis
https://arxiv.org/abs/2508.02855 https://

A resource-efficient quantum-walker Quantum RAM
Efficient and coherent data retrieval and storage are essential for harnessing quantum algorithms' speedup. Such a fundamental task is addressed by a quantum Random Access Memory (qRAM). Despite their promising scaling properties, current qRAM proposals demand excessive resources and rely on operations beyond the capabilities of current hardware requirements, rendering their practical realization inefficient. We introduce a novel architecture that significantly reduces resource requirements whi…

Replaced article(s) found for cs.SD. https://arxiv.org/list/cs.SD/new
[1/1]:
- DiffVox: A Differentiable Model for Capturing and Analysing Vocal Effects Distributions
Yu, Mart\'inez-Ram\'irez, Koo, Hayes, Liao, Fazekas, Mitsufuji

A class number problem for imaginary cyclic number fields of 2-power degrees
St\'ephane R. Louboutin
https://arxiv.org/abs/2508.10563 https://arxiv.org…

A class number problem for imaginary cyclic number fields of 2-power degrees
In 2024, M. K. Ram proved that the class number of an imaginary cyclic quartic number field is never equal to a prime $p\equiv 3\pmod 4$. Here we greatly generalize this result to the case of the non-quadratic imaginary cyclic number fields of $2$-power degrees and not necessarily prime class numbers.

RAD@home citizen science discovery of two spiral galaxies where the 30-220 kpc radio lobes are possibly shaped by ram pressure stripping
Prakash Apoorva, Ananda Hota, Pratik Dabhade, P. K. Navaneeth, Dhruv Nayak, Arundhati Purohit
https://arxiv.org/abs/2508.09518

RAD@home citizen science discovery of two spiral galaxies where the 30-220 kpc radio lobes are possibly shaped by ram pressure stripping
We report the RAD@home citizen science discovery of two rare spiral-host radio galaxies (NGC 3898 and WISEA J221656.57-132042434.1 or RAD-"Thumbs up" galaxy), both exhibiting asymmetric radio lobes extending over 30 to 220 kiloparsec scales. We present a multi-wavelength image analysis of these two sources using radio, optical, and ultraviolet data. Both host galaxies are young, star-forming systems with asymmetric or distorted stellar disks. These disks show similarities to those in galaxies u…

Graph theory-based automated quantum algorithm for efficient querying of acyclic and multiloop causal configurations
Salvador A. Ochoa-Oregon, Juan P. Uribe-Ram\'irez, Roger J. Hern\'andez-Pinto, Selomit Ram\'irez-Uribe, Germ\'an Rodrigo
https://arxiv.org/abs/2508.04019

Graph theory-based automated quantum algorithm for efficient querying of acyclic and multiloop causal configurations
Quantum algorithms provide a promising framework in high-energy physics, in particular, for unraveling the causal configurations of multiloop Feynman diagrams by identifying Feynman propagators with qubits, a challenge analogous to querying directed acyclic graphs in graph theory. In this paper, we present the Minimum Clique-optimised quantum Algorithm (MCA), an automated quantum algorithm designed to efficiently query the causal structures within the Loop-Tree Duality. The MCA quantum algorith…

Constant Time with Minimal Preprocessing, a Robust and Extensive Complexity Class
\'Etienne Grandjean, Louis Jachiet
https://arxiv.org/abs/2509.10188 https://

Constant Time with Minimal Preprocessing, a Robust and Extensive Complexity Class
In this paper, we study the class $\mathtt{cstPP}$ of operations $\mathtt{op}: \mathbb{N}^k\to\mathbb{N}$, of any fixed arity $k\ge 1$, satisfying the following property: for each fixed integer $d\ge 1$, there exists an algorithm for a RAM machine which, for any input integer $N\ge 2$, - pre-computes some tables in $O(N)$ time, - then reads $k$ operands $x_1,\ldots,x_k

Quantum sensing in the presence of pulse errors and qubit leakage
David M. Lancaster, Muhammad Ali Shahbaz, Hamed Goli Yousefabad, Sanway Chatterjee, Eegan Ram, Jonathan D. Weinstein
https://arxiv.org/abs/2509.09874

Quantum sensing in the presence of pulse errors and qubit leakage
Using both simulation and experiment, we investigate the robustness of dynamical decoupling sequences to pulse errors: rotation errors and detuning errors. Whereas prior work examined the effect of errors on coherence times, here we show that quantum sensing can be affected by pulse errors in dramatically different ways than coherence times alone. We also explore the effects of qubit leakage: off-resonant coupling to other quantum levels. We find order-of-magnitude differences between commonly-…

Unraveling the Feedback-Regulated Star Formation Activities around the Expanding Galactic MIR Bubble [HKS2019] E71
Aayushi Verma, Saurabh Sharma, Lokesh K. Dewangan, Tarak Chand, Ariful Hoque, Devendra K. Ojha, Harmeen Kaur, Ram Kesh Yadav, Mamta, Manojit Chakraborty, Archana Gupta
https://arxiv.org/abs/2507.13232

Unraveling the Feedback-Regulated Star Formation Activities around the Expanding Galactic MIR Bubble [HKS2019] E71
We explore the physical environment of the Galactic mid-infrared (MIR) bubble [HKS2019] E71 (hereafter E71) through a multi-wavelength approach. E71 is located at the edge of a filamentary structure, as traced in Herschel images (250-500 $μ$m), Herschel column density map, and molecular maps in the velocity range [-20,-14] km/s. It hosts a stellar cluster (radius~1.26 pc, distance~1.81+/-0.15 kpc) associated with radio continuum emission, including a centrally positioned B1.5-type massive star…

Wieferich primes in number fields and the conjectures of Ankeny--Artin--Chowla and Mordell
Nic Fellini, M. Ram Murty
https://arxiv.org/abs/2508.08472 https://

Wieferich primes in number fields and the conjectures of Ankeny--Artin--Chowla and Mordell
For a prime $p\equiv 1 \,(\bmod{4})$, let \[ \varepsilon = \frac{1}{2}\left( t + u\sqrt{p}\right) \] be the fundamental unit of the real quadratic field $\mathbb{Q}(\sqrt{p})$. In 1951, N. Ankeny, E. Artin, and S. Chowla asked whether $p$ can divide $u$. They suggested that this can never happen and this has since been called the Ankeny--Artin--Chowla (AAC) conjecture. We show that if $\mathfrak{p}$ is the prime above $p$ in $\mathbb{Q}(\sqrt{p})$, then the AAC conjecture is false if and only…

Quantifying the unwinding due to ram pressure stripping in simulated galaxies
Rubens E. G. Machado, Caroline F. O. Grinberg, Elvis A. Mello-Terencio
https://arxiv.org/abs/2507.02555

Quantifying the unwinding due to ram pressure stripping in simulated galaxies
Galaxies moving through the gas of the intracluster medium (ICM) experience ram pressure stripping, which can leave behind a gas tail. When a disk galaxy receives the wind edge-on, however, the characteristic signature is not a typical jellyfish tail, but rather an unwinding of the spiral arms. We aim to quantify such asymmetries both in the gas and in the stellar component of a simulated galaxy. To this end, we simulate a gas-rich star-forming spiral galaxy moving through a self-consistent ICM…

Realizing the Petz Recovery Map on an NMR Quantum Processor
Gayatri Singh, Ram Sagar Sahani, Vinayak Jagadish, Lea Lautenbacher, Nadja K. Bernardes, Kavita Dorai
https://arxiv.org/abs/2508.08998

Realizing the Petz Recovery Map on an NMR Quantum Processor
The Petz recovery map is a fundamental protocol in quantum information theory, enabling the retrieval of quantum information lost due to noisy processes. Here, we experimentally implement the Petz recovery map on a nuclear magnetic resonance (NMR) quantum processor using the duality quantum computing (DQC) algorithm. Focusing on two paradigmatic single-qubit channels, namely phase damping and amplitude damping, we demonstrate that the recovered states closely match theoretical predictions. Our …

Low Cost Bayesian Experimental Design for Quantum Frequency Estimation with Decoherence
Alexandra Ram\^oa, Lu\'is Paulo Santos, Akihito Soeda
https://arxiv.org/abs/2508.07120

Low Cost Bayesian Experimental Design for Quantum Frequency Estimation with Decoherence
A two-level quantum system evolving under a time-independent Hamiltonian produces oscillatory measurement probabilities. The estimation of the associated frequency is a cornerstone problem in quantum metrology, sensing, calibration and control. In this work, we tackle this task by introducing WES: a Window Expansion Strategy for low cost adaptive Bayesian experimental design. WES employs empirical cost-reduction techniques to keep the optimization overhead low, curb scaling problems, and enable…

Characterizing the interplay between Galactic star formation and ionization feedback with PRIMA
Annie Zavagno, Delphine Russeil, Paolo Suin, Siju Zhang, Ram Kesh Yadav, Miguel Figueira, Loris Berthelot, Doris Arzoumanian, Manash Ranjan Samal, Vineet Rawat, Philippe Andr\'e, Michael Mattern, Hong-Li Liu, Sarah Sadavoy, Parisa Nozari, Beno\^it Epinat
https://…

Characterizing the interplay between Galactic star formation and ionization feedback with PRIMA
Recent results from the James Webb Space Telescope show that nearby spiral galaxies are dominated by the presence of H I and H II bubbles that strongly shape their surrounding medium. These bubbles result from the feedback of high-mass stars at different stages of their life cycle. However, early (pre-supernova) feedback from high-mass stars is still poorly quantified. Recent results from numerical simulations suggest that the impact of high-mass star early feedback (photoionization, wind) on s…