Tootfinder

On Gy\'arf\'as' Path-Colour Problem
Ben Cameron, Alexander Clow
https://arxiv.org/abs/2506.19100 https://arxiv.org/pdf/25…

On Gyárfás' Path-Colour Problem
In their 1997 paper titled ``Fruit Salad", Gyárfás posed the following conjecture: there exists a constant $k$ such that if each path of a graph spans a $3$-colourable subgraph, then the graph is $k$-colourable. It is noted that $k=4$ might suffice. Let $r(G)$ be the maximum chromatic number of any subgraph $H$ of $G$ where $H$ is spanned by a path. The only progress on this conjecture comes from Randerath and Schiermeyer in 2002, who proved that if $G$ is an $n$ vertex graph, then $χ(G) \le…

I was feeling pretty drained last night and wasn't sure if I should bike to work today. My knee was really bugging me going up steps (more than usual) and I decided I would wait til morning to decide, based on how I felt.
I felt totally fine this morning. Reset! I think it's because I walked nearly 5 miles yesterday, and also spent a lot of time on the floor fixing a laser cutter.

Anomalous magnetoresistance in an antiferromagnetic Kagome semimetal heterostructures
Xionghua Liu, Qiyuan Feng, Weibin Cui, Hanjie Guo, Yubin Hou, Xiaomin Zhang, Yongcheng Deng, Dong Zhang, Jing Zhang, Qingyou Lu, Kaiyou Wang
https://arxiv.org/abs/2507.18069

Anomalous magnetoresistance in an antiferromagnetic Kagome semimetal heterostructures
Antiferromagnetic Kagome semimetals have attracted tremendous attentions for their potential application in antiferromagnetic topological spintronics. Effectively manipulating Kagome antiferromagnetic states could reveal abundant physical phenomena induced from quantum interactions between topology, spin, and correlation. Here, we achieved tunable spin textures of FeSn thin films via introducing interfacial Dzyaloshinskii Moriya interaction from heavy-metal Pt overlayer. With increasing FeSn th…

Don't miss today's packed Metacurity for a ton of critical infosec developments you should know, including
--UK to spend $1.1 billion relocating Afghan helpers following data breach
--DOGE worker published the private key for four dozen-plus LLMs,
--US gov't IT contractor to pay $14.75m fine for overstated cyber services,
--Italian cops arrest Romanian behind 'Diskstation' ransomware gang,
--OMB readies post-quantum standard,
--MSFT'…

UK to spend $1.1 billion relocating Afghan helpers following data breach
DOGE worker published the private key for four dozen-plus LLMs, US gov't IT contractor to pay $14.75m fine for overstated cyber services, Italian cops arrest Romanian behind 'Diskstation' ransomware gang, OMB readies post-quantum standard, MSFT's 'digital escorts' leave DoD vulnerable, much more

#Figma's $300,000 Daily #AWS Bill Highlights Cloud Dependency Risks
https://www.infoq.com/news/2025/07/figma-a…

Post shared with me by @… about twenty minutes ago when I last heard from her to know she’s alive.
(israel’s occupation forces have surrounded her neighbourhood with tanks and are firing on houses and tents. The israeli genocide of the Palestinian people is being live streamed by its victims.)

MoEcho: Exploiting Side-Channel Attacks to Compromise User Privacy in Mixture-of-Experts LLMs
Ruyi Ding, Tianhong Xu, Xinyi Shen, Aidong Adam Ding, Yunsi Fei
https://arxiv.org/abs/2508.15036

MoEcho: Exploiting Side-Channel Attacks to Compromise User Privacy in Mixture-of-Experts LLMs
The transformer architecture has become a cornerstone of modern AI, fueling remarkable progress across applications in natural language processing, computer vision, and multimodal learning. As these models continue to scale explosively for performance, implementation efficiency remains a critical challenge. Mixture of Experts (MoE) architectures, selectively activating specialized subnetworks (experts), offer a unique balance between model accuracy and computational cost. However, the adaptive …

Vision-driven River Following of UAV via Safe Reinforcement Learning using Semantic Dynamics Model
Zihan Wang, Nina Mahmoudian
https://arxiv.org/abs/2508.09971 https://

Vision-driven River Following of UAV via Safe Reinforcement Learning using Semantic Dynamics Model
Vision-driven autonomous river following by Unmanned Aerial Vehicles is critical for applications such as rescue, surveillance, and environmental monitoring, particularly in dense riverine environments where GPS signals are unreliable. We formalize river following as a coverage control problem in which the reward function is submodular, yielding diminishing returns as more unique river segments are visited, thereby framing the task as a Submodular Markov Decision Process. First, we introduce Ma…

I need to spend some time with a USB PD analyzer and some of my hardware.
Earlier today I observed the following cursed USB-C behavior at a friend's place:
1) Laptop -> phone: charges phone
2) Power bank -> phone: charges phone
3) Wall brick -> phone: red LED on phone turns on, but OS doesn't show any indication of charging and battery level doesn't go up
4) Wall brick -> power bank: charges bank
5) Laptop -> power bank: LED flashes …

Evidence for single variant in altermagnetic RuO2(101) thin films
Cong He, Zhenchao Wen, Jun Okabayashi, Yoshio Miura, Tianyi Ma, Tadakatsu Ohkubo, Takeshi Seki, Hiroaki Sukegawa, Seiji Mitani
https://arxiv.org/abs/2508.13720

Evidence for single variant in altermagnetic RuO2(101) thin films
Altermagnetism presents intriguing possibilities for spintronic devices due to its unique combination of strong spin-splitting and zero net magnetization. However, realizing its full potential hinges on fabricating single-variant altermagnetic thin films. In this work, we present definitive evidence for the formation of single-variant altermagnetic RuO2(101) thin films with fully epitaxial growth on Al2O3(1-102) r-plane substrates, confirmed through rigorous structural analyses using X-ray diff…