Tootfinder

Facing down a new week of too many deadlines like this chestnut-backed chickadee (Poecile rufescens) in Stanley Park, Vancouver
#naturalist #wildlife #photography

Combinatorial and Gaussian Foundations of Rational Nth Root Approximations: Theorems and Conjectures
Isaac Wolford
https://arxiv.org/abs/2508.14095 https://

Combinatorial and Gaussian Foundations of Rational Nth Root Approximations: Theorems and Conjectures
We present an approach (the biroot method) for nth root approximation that yields closed-form rational functions with coefficients derived from binomial structures, Gaussian functions, or qualifying DAG structures. The method emerges from an analysis of Newton's method applied to root extraction, revealing that successive iterations generate coefficients following rows of Pascal's triangle in an alternating numerator-denominator pattern. After further exploration of these patterns, we formulate…

Origin of Reverse Size Effect in Ferroelectric Hafnia Thin Films
Tianyuan Zhu, Shi Liu
https://arxiv.org/abs/2509.12952 https://arxiv.org/pdf/2509.12952

Origin of Reverse Size Effect in Ferroelectric Hafnia Thin Films
The persistence of ferroelectricity in ultrathin HfO$_2$ films challenges conventional theories, particularly given the paradoxical observation that the out-of-plane lattice spacing increases with decreasing thickness. We resolve this puzzle by revealing that this anomalous lattice expansion is counterintuitively coupled to suppressed out-of-plane polarization. First-principles calculations combined with analytical modeling identify two mechanisms behind this expansion: a negative longitudinal …

Pixel-Perfect Depth with Semantics-Prompted Diffusion Transformers
Gangwei Xu, Haotong Lin, Hongcheng Luo, Xianqi Wang, Jingfeng Yao, Lianghui Zhu, Yuechuan Pu, Cheng Chi, Haiyang Sun, Bing Wang, Guang Chen, Hangjun Ye, Sida Peng, Xin Yang
https://arxiv.org/abs/2510.07316

Pixel-Perfect Depth with Semantics-Prompted Diffusion Transformers
This paper presents Pixel-Perfect Depth, a monocular depth estimation model based on pixel-space diffusion generation that produces high-quality, flying-pixel-free point clouds from estimated depth maps. Current generative depth estimation models fine-tune Stable Diffusion and achieve impressive performance. However, they require a VAE to compress depth maps into latent space, which inevitably introduces \textit{flying pixels} at edges and details. Our model addresses this challenge by directly…

Could Terrell Edmunds Complete The Las Vegas Raiders’ Puzzle? https://raiderramble.com/2025/08/11/could-terrell-edmunds-complete-the-las-vegas-raiders-puzzle/

📳 Physicists solve 90-year-old puzzle of quantum damped harmonic oscillators
#physics

Physicists solve 90-year-old puzzle of quantum damped harmonic oscillators
A plucked guitar string can vibrate for seconds before falling silent. A playground swing, emptied of its passenger, will gradually come to rest. These are what physicists call "damped harmonic oscillators" and are well understood in terms of Newton's laws of motion.

Jane Fonda is joining forces with more than 500 celebrities and Hollywood heavyweights to defend free speech.
The membership roll already includes scores of famous actors like Jamie Lee Curtis, Viola Davis, Whoopi Goldberg, Pedro Pascal, Natalie Portman and Michael Keaton.
Successful directors like Spike Lee and Ben Stiller have signed on, along with singer and actress Barbra Streisand and pop star and songwriter Billie Eilish.
Fonda, a star who has championed progressive cau…

Jane Fonda, other stars, revive the Committee for the First Amendment – a group that emerged when the anti-communist panic came for Hollywood
Even after the original group fizzled, many of its members were able to keep making films with progressive messages.

Assessment of tabulated-chemistry models for lean premixed strained hydrogen flames with low-dimensional manifolds
Alessandro Porcarelli, Pasquale Eduardo Lapenna, Francesco Creta, Ivan Langella
https://arxiv.org/abs/2510.03324

Assessment of tabulated-chemistry models for lean premixed strained hydrogen flames with low-dimensional manifolds
This study presents a comprehensive a priori analysis of tabulated-chemistry models for both laminar and turbulent lean premixed hydrogen flames in strained counterflow configuration. Particular focus is drawn on differential and preferential diffusion effects and the synergistic interaction of thermodiffusive instabilities and turbulence that existing models struggle to capture. Through detailed assessment of various modelling approaches at unfiltered and filtered grids, we identify significan…

Found an app called “Octave Coffee”. It’s an opinionated timer for pourover coffee. Tells you how much to pour, then how much to wait, and so on. And it has a cute pixel art kitty.
The problem is… it negs you while doing it, and your reward at the end for following the instructions is the message, “You actually listened. Shocking.”
I did it twice. It doesn’t vary.
So… I’m deleting it, even though I found it useful, because I don’t want to be insulted first thing in the morn…

Stability analysis of thermodiffusively unstable counterflow lean premixed hydrogen flames
Alessandro Porcarelli, Pasquale Eduardo Lapenna, Francesco Creta, Ivan Langella
https://arxiv.org/abs/2509.04197

Stability analysis of thermodiffusively unstable counterflow lean premixed hydrogen flames
This study investigates the effect of increasing strain rate on thermodiffusively unstable, lean premixed hydrogen flames in a 2D counterflow configuration through detailed-chemistry numerical simulations for the first time. The analysis of transient flame dynamics without imposed perturbations reveals that a steady-state flame front is achieved only when the strain rate exceeds a certain threshold. Below this threshold, the flame exhibits unstable oscillatory behavior. When subjected to a rang…