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@Techmeme@techhub.social
2026-06-05 14:10:56

Blackstone-backed data center operator AirTrunk commits to investing $30B in India by 2030, with plans to develop 5GW of new data center capacity in the country (Jagmeet Singh/TechCrunch)
techcrunch.com/2026/06/05/airt

@arXiv_mathDS_bot@mastoxiv.page
2026-08-05 08:01:42

Pattern formation: reactivity is not necessary for chemotaxis--driven instabilities
Angela Monti
arxiv.org/abs/2608.03685 arxiv.org/pdf/2608.03685 arxiv.org/html/2608.03685
arXiv:2608.03685v1 Announce Type: new
Abstract: A classical result by Neubert, Caswell and Murray states that reactivity of a spatially homogeneous equilibrium is a necessary condition for diffusion-driven (Turing) instability. In this work, we investigate whether the same conclusion remains valid in the presence of chemotaxis. We consider a general reaction--diffusion system coupled with a chemotactic flux and establish necessary conditions for asymptotic instability. We show that the classical requirement of reactivity can be relaxed when the chemotactic contribution is sufficiently strong. In particular, while reactivity remains necessary for Turing instability, it is not a necessary condition for chemotaxis-driven instability. From a computational viewpoint, we extend the matrix-oriented formulation developed for reaction--diffusion systems to the more general class of reaction--diffusion--chemotaxis models. The chemotactic transport term is discretized in a form compatible with the matrix-oriented approximation of the diffusion operator, yielding an efficient numerical framework for the simulation of chemotaxis-driven pattern formation. A geometric interpretation of the instability region is presented, highlighting the distinct roles played by diffusion and chemotaxis. The theoretical and numerical developments are illustrated through two representative examples: a chemotaxis-extended Schnakenberg model, showing how chemotaxis modifies classical Turing patterns, and a predator--prey model, demonstrating that chemotaxis alone can induce pattern formation in the absence of both reactivity and diffusion-driven instability. These results reveal a fundamental difference between diffusion-driven and chemotaxis-driven mechanisms of spatial self-organization and provide new theoretical and computational insights into the role of non-symmetric transport processes in biological pattern formation.
toXiv_bot_toot

@jerome@jasette.facil.services
2026-07-05 22:23:54

Editorial: The Human Rights Museum’s Nakba exhibit ignores the important context that I don’t want to hear about it
thebeaverton.com/2026/07/edito

@aral@mastodon.ar.al
2026-05-06 06:40:46

Moving from VSCodium to Helix Editor was one of the best decisions I’ve ever made :) @… bsd.network/@ed1conf/116523434

@jdrm@social.linux.pizza
2026-06-06 08:04:39

Ayer vi a un conductor de autobús con cascos de iPhone mientras conducía. Y no se, pero me suena que tienen cancelación de ruído... No los veo aptos para conducir

Thomas Smith withdrew from the Republican primary contest for Michigan’s eighth district last month.
On Tuesday, he won the nomination.
Unofficial results show Smith with more than 50% of the vote, according to the Associated Press,
defeating the man he endorsed,
anti-abortion activist Al Lemmo,
and the man Donald Trump endorsed,
former federal law enforcement officer Amir Hassan.
In a statement on Wednesday, Smith said he was “humbled and honored th…

@netzschleuder@social.skewed.de
2026-06-04 12:00:04

contiguous_usa: Contiguous states (USA)
A network of contiguous states in the USA, in which each state is a node and two nodes are connected if they share a land-based geographic border. The dataset includes the lower 48 states, and the District of Columbia.
This network has 49 nodes and 107 edges.
Tags: Transportation, Roads, Unweighted

contiguous_usa: Contiguous states (USA). 49 nodes, 107 edges. https://networks.skewed.de/net/contiguous_usa
@fanf@mendeddrum.org
2026-06-06 08:42:02

from my link log —
Fast commits for ext4.
lwn.net/SubscriberLink/842385/
saved 2021-01-15

@Techmeme@techhub.social
2026-08-05 11:25:57

Shopify reports Q2 revenue up 34% YoY to $3.6B, above $3.45B est., GMV up 32% YoY to $115.6B, and forecasts Q3 revenue above est.; SHOP jumps 30% pre-market (Deborah Sophia/Reuters)
reuters.com/business/canadas-s

@netzschleuder@social.skewed.de
2026-07-04 15:00:04

sp_office: Workplace contacts (2013)
A temporal network of contacts between individuals, measured in an office building in France, from June 24 to July 3, 2013.
This network has 92 nodes and 9827 edges.
Tags: Social, Offline, Weighted, Temporal, Metadata
networks.skewed.de/net/sp_offi

sp_office: Workplace contacts (2013). 92 nodes, 9827 edges. https://networks.skewed.de/net/sp_office