Numberphile 15-minute video on Dehn invariants: https://www.youtube.com/watch?v=eYfpSAxGakI
The Dehn invariant is a value derived from a polyhedron that doesn't change if you cut up the polyhedron into smaller polyhedral pieces and rearrange them into a different polyhedron. It's 0 for the cube and nonzero for other Platonic solids, proving that they can't be cut and rearranged into a cube. See https://en.wikipedia.org/wiki/Dehn_invariant for more, in somewhat more technical detail than the video.
Uk pol Show more
I'm not so worried about Brexit as I am terrified of the far-right tendencies of the general public
Federation - what flows where, and why? https://blog.dereferenced.org/federation-what-flows-where-and-why
surveillance capitalism, homophobia mention Show more
this shit is bad enough for your average kid, but obviously disproportionately impacts vulnerable youth. hey maybe the reason why your kid is trying to put up a privacy barrier is because they're fucking queer and you're homophobic DEBORAH
Congress wants Google and Facebook to tell users exactly how much their personal data is worth. "Whatever the exact value that gets assigned to our attention... a little more transparency will remind us that "free" isn't free," via @wired. https://www.wired.com/story/senators-want-facebook-price-data-possible/
Facebook to launch its own cryptocurrency, "Libra," plus why I'm against Libra and cryptocurrency period https://www.diversetechgeek.com/2019/06/19/facebook-launch-cryptocurrency-libra-2020/ #facebook #cryptocurrency
How long it takes to binge-watch various long-running TV cartoons, from "The Flintstones" to "The Simpsons" https://www.diversetechgeek.com/2019/07/03/how-long-take-binge-watch-long-running-cartoons/ #bingewatching #animation #television
My thoughts on Mastodon and Pixelfed. https://www.diversetechgeek.com/2019/07/01/thoughts-on-mastodon-pixelfed/ #mastodon #pixelfed #technology
I'm extremely pleased to launch Run Your Own Social: How to run a small social network site for you friends.
This is a guide book to running a small, tight-knit federated social network server. It comes from my year of experience running Friend Camp. It's focused largely on SOCIAL solutions, though it does touch on the technical.
I've tried to keep it technology-neutral, and it should be a pretty easy read for anyone who's been on the fediverse for a while.
It's the last few hours of crowdfunding for #Mobilizon, a free open federated alternative to Facebook Events:
You can follow it here:
It's already achieved its funding goals for events, groups and ActivityPub federation.
Further funds will go to mobile apps, UI development and advanced maps.
It's backed by @Framasoft , the free software organisation that backed PeerTube and many other alternatives.
A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.
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