Tootfinder

The cognitive dissonance of AI marketing is funny to me. “It’s so simple a caveman could use it!” and “we have 5 day, 8 hour bootcamps to teach you to how to use AI tools”.

The longest increasing subsequence of Brownian separable permutons
Arka Adhikari, Jacopo Borga, Thomas Budzinski, William Da Silva, Delphin S\'enizergues
https://arxiv.org/abs/2506.19123

The longest increasing subsequence of Brownian separable permutons
We establish a scaling limit result for the length $\operatorname{LIS}(σ_n)$ of the longest increasing subsequence of a permutation $σ_n$ of size $n$ sampled from the Brownian separable permuton $\boldsymbolμ_p$ of parameter $p\in(0,1)$, which is the universal limit of pattern-avoiding permutations. Specifically, we prove that \[\frac{\operatorname{LIS}(σ_n)}{n^α}\;\underset{n\to\infty}{\overset{\mathrm{a.s.}}{\longrightarrow}}\; X,\] where $α=α(p)$ is the unique solution in the interval…

High-throughput Super-Resolution Imaging Chip based on Miniaturized Full-frequency Encoded-illumination
Xiaoyu Yang (State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, China, Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK), Haonan Zhang (State Key Lab…

High-throughput Super-Resolution Imaging Chip based on Miniaturized Full-frequency Encoded-illumination
A miniaturized full-frequency encoded illumination (mini-FEI) chip is presented for high-throughput super-resolution imaging using the spatial frequency shift (SFS) effect. A tunable full SFS scheme is achieved through propagating and evanescent wave. The multi-illumination modes are precisely and flexibly modulated by an encoded LED array. The light travels to the sample via a set of prisms, producing the super-resolution images with high signal-to-noise ratio (SNR). Mini-FEI super-resolution …

Supposedly, focusing on solutions when listening to someone share a problem instead of simply listening is a “male trait.” I don’t think it’s down to gender differences; I think it’s just about differences between humans, but it is something I do. I wish it weren’t. I just upset my son doing it, & I feel terrible.
Fuck. 😢

Faxgeräte in Rente: Die Geräte haben in vielen Unternehmen ausgedient! 📠 Laut einer aktuellen Bitkom-Umfrage nutzt nicht mal mehr jedes fünfte Unternehmen in Deutschland regelmäßig ein Fax.
Zum Artikel: https://heise.de/-10425507?wt_mc=sm.re…

Safe Low Bandwidth SPV: A Formal Treatment of Simplified Payment Verification Protocols and Security Bounds
Craig S Wright
https://arxiv.org/abs/2507.00740

Safe Low Bandwidth SPV: A Formal Treatment of Simplified Payment Verification Protocols and Security Bounds
This paper presents a complete formal specification, protocol description, and mathematical proof structure for Simplified Payment Verification (SPV) as originally defined in the Bitcoin whitepaper \cite{nakamoto2008}. In stark contrast to the misrepresentations proliferated by popular implementations, we show that SPV is not only secure under bounded adversarial assumptions but strictly optimal for digital cash systems requiring scalable and verifiable transaction inclusion. We reconstruct the…

Dynamic Grid Trading Strategy: From Zero Expectation to Market Outperformance
Kai-Yuan Chen, Kai-Hsin Chen, Jyh-Shing Roger Jang
https://arxiv.org/abs/2506.11921

Dynamic Grid Trading Strategy: From Zero Expectation to Market Outperformance
We propose a profitable trading strategy for the cryptocurrency market based on grid trading. Starting with an analysis of the expected value of the traditional grid strategy, we show that under simple assumptions, its expected return is essentially zero. We then introduce a novel Dynamic Grid-based Trading (DGT) strategy that adapts to market conditions by dynamically resetting grid positions. Our backtesting results using minute-level data from Bitcoin and Ethereum between January 2021 and Ju…

Scale-Dependent Multifractality in Bitcoin Realised Volatility: Implications for Rough Volatility Modelling
Milan Pontiggia (MAGEFI - University of Bordeaux, France)
https://arxiv.org/abs/2507.00575

Scale-Dependent Multifractality in Bitcoin Realised Volatility: Implications for Rough Volatility Modelling
We assess the applicability of rough volatility models to Bitcoin realised volatility using the normalised p-variation framework of Cont and Das (2024). Applying this model free estimator to high-frequency Bitcoin data from 2017 to 2024 across multiple sampling resolutions, we find that the normalised statistic remains strictly negative throughout, precluding the estimation of a valid roughness index. Stationarity tests and robustness checks reveal no significant evidence of non-stationarity or…

Production, Quality Assurance and Quality Control of the SiPM Tiles for the DarkSide-20k Time Projection Chamber
Acerbi, Adhikari, Agnes, Ahmad, Albergo, Albuquerque, Alexander, Alton, Amaudruz, Angiolilli, Aprile, Corona, Auty, Ave, Avetisov, Azzolini, Back, Balmforth, Olmedo, Barrillon, Batignani, Bhowmick, Bloem, Blua, Bocci, Bonivento, Bottino, Boulay, Braun, Buchowicz, Bussino, Busto, Cadeddu, Cadoni, Calabrese, Camillo, Caminata, Canci, Caravati, C\'ardenas-Montes, Cargioli, …

Production, Quality Assurance and Quality Control of the SiPM Tiles for the DarkSide-20k Time Projection Chamber
The DarkSide-20k dark matter direct detection experiment will employ a 21 m^2 silicon photomultiplier (SiPM) array, instrumenting a dual-phase 50 tonnes liquid argon Time Projection Chamber (TPC). SiPMs are arranged into modular photosensors called Tiles, each integrating 24 SiPMs onto a printed circuit board (PCB) that provides signal amplification, power distribution, and a single-ended output for simplified readout. 16 Tiles are further grouped into Photo-Detector Units (PDUs). This paper de…

Simplified Aluminum Nitride Processing for Low-Loss Integrated Photonics and Nonlinear Optics
Haochen Yan, Shuangyou Zhang, Arghadeep Pal, Alekhya Gosh, Abdullah Alabbadi, Masoud Kheyri, Toby Bi, Yaojing Zhang, Irina Harder, Olga Lohse, Florentina Gannott, Alexander Gumann, Eduard Butzen, Katrin Ludwig, Pascal DelHaye
https://ar…

Simplified Aluminum Nitride Processing for Low-Loss Integrated Photonics and Nonlinear Optics
Aluminum nitride (AlN) is an extremely promising material for integrated photonics because of the combination of strong \c{hi}2 and \c{hi}3 nonlinearities. However, the intrinsic hardness of the material and charging effects during electron beam lithography make AlN nanofabrication a challenging process. Conventional approaches often require multiple hard masks and a metal mask to fabricate nanostructures. In this letter, we report a novel, simple method to fabricate AlN microresonators by usin…