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Alan Turing is the face of the new £50 note

The Bank of England has announced, following a public poll, that the new £50 note will feature mathematician, cryptographer and computer science pioneer Alan Turing. While this might seem like unambiguous good news, the issues it raises are more complicated than they first appear. Here’s a guest post from LGBT+ mathematician Calvin Smith with his… aperiodical.com/2019/07/alan-t

I did a google image search and these were the top two results. Any guesses what I googled?

A random question that came to me in the shower has already been addressed by the internet. Good. isnphard.com/g/bejeweled/

Some company is advertising by handing out USBs that look like thumb drives, but actually act as keyboards and open the company's webpage on any OS, sometimes by using the windows run dialog. This has given the attack vector more publicity and hopefully will remind people not to plug in random USBs they find. v.redd.it/6aygvuaqdq431

"You don't know how high above you the sky goes, but you're not freaking out about that." - xkcd

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France's largest free software organisation @Framasoft has just launched a crowdfunding campaign for an open federated events tool, Mobilizon:


Mobilizon would replace Facebook Events and similar closed services.

It would use ActivityPub, so people would be able to organise events on the Fediverse.

You can also follow its Mastodon account here:


#Mobilizon #DeleteFacebook #Events #Alternatives #Fediverse

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The graphs of cos(x) and tan(x) intersect at right angles - who knew ?!? More, have a look at the gradients - *very* interesting.

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multifactor authentication Show more

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Breaking news in the algorithmic/arithmetic world!

Integer multiplication in time O(n · log n). [1]

It means you can multiply two n-bits integer using roughly n log n operations. It's a *very* important problem because a lot of mathematical software rely on efficient integer multiplication.

It breaks the last best known algorithm [2] (Schönhage–Strassen), that was in O(n · log n · log log n)

[1] hal.archives-ouvertes.fr/hal-0
[2] en.wikipedia.org/wiki/Sch%C3%B

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The Incredible Proof Machine: "LabView wrestled through the Curry-Howard isomorphism"


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@olligobber Another proof by induction: If you don't believe this, you're drafted.

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I have set my phone's device name to "Pology". So now whenever I use my bluetooth headset, I hear "Connected to-Pology".

Huh, the squares of odd affine transformations of the euclidean plane form a group.

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A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.

Use \( and \) for inline LaTeX, and \[ and \] for display mode.