Tootfinder

If a book hasn't made it to a second edition, it doesn't have a first edition either (grumble, XML, grumble, grumble, library catalog, grumble, grumble, grumble).

@… not in this case, but thanks.
Also, the alternative text from the fourth image at <https://mastodon.bsd.cafe/@grahamperrin/115394942099586590&gt…

Gremban Expansion for Signed Networks: Algebraic and Combinatorial Foundations for Community-Faction Detection
Fernando Diaz-Diaz, Karel Devriendt, Renaud Lambiotte
https://arxiv.org/abs/2509.14193

Gremban Expansion for Signed Networks: Algebraic and Combinatorial Foundations for Community-Faction Detection
This article deals with the characterization and detection of community and faction structures in signed networks. We approach the study of these mesoscale structures through the lens of the Gremban expansion. This graph operation lifts a signed graph to a larger unsigned graph, and allows the extension of standard techniques from unsigned to signed graphs. We develop the combinatorial and algebraic properties of the Gremban expansion, with a focus on its inherent involutive symmetry. The main …

Tax the billionaires. https://mastodon.social/@greenpeace/115718518283533635

Greenpeace International (@greenpeace@mastodon.social)
Attached: 1 image A picture is worth a thousand words... or in this case, it's worth 139 billion 😒 Here's a visualisation of Jeff Bezos' wealth by scale: https://eattherichtextformat.github.io/1-pixel-wealth/ #TaxTheRich #MakePollutersPay

Researchers demonstrated a major WhatsApp flaw that exposed 3.5B users' phone numbers, with 57% also showing a profile photo; Meta fixed the enumeration problem (Andy Greenberg/Wired)
https://www.wired.com/story/a-simple-whatsapp-security-flaw-…

A Simple WhatsApp Security Flaw Exposed 3.5 Billion Phone Numbers
By plugging tens of billions of phone numbers into WhatsApp’s contact discovery tool, researchers found “the most extensive exposure of phone numbers” ever—along with profile photos and more.

I joined the BC Green party because there's no other option around here if you care about the earth. My first ever political convention!
@…
#bcgreen #GreenParty

Molly interviews the founders of @…
Leah Greenberg and Ezra Levin,
about the origins and evolution of their grassroots political movement,
which emerged in response to Donald Trump's 2016 election.
As former congressional staffers,
they leveraged insider knowledge to empower everyday Americans
—from nurses …

@… honestly, don't spend time on it, but (again) thanks.
Focusing on cat pictures, instead of bug reporting, is positively fulfilling. Surprises around so many corners. Avenues such as this:
https://

Welcome to the Resistance:
Eric Blanc, Leah Greenberg, and Waleed Shahid
on the liberal resistance’s sharp left turn since Trump returned to the White House.
Liberals are voting for Zohran at the ballot box,
fighting ICE in the streets,
and just generally looking favorably upon social democracy.
This discussion puts the moment in historic context and plots out the strategic exigencies and opportunities ahead.

Welcome to the Resistance w/ Eric Blanc, Leah Greenberg, Waleed Shahid
Podcast Episode · The Dig · 12/12/2025 · 2h 5m

@… on a positive note: I decided to begin ending the drought ― <https://mastodon.bsd.cafe/@grahamperrin/115555235070842130>.