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We want your best #proofinatoot on

Mastodon is a new social network, heavily inspired by Twitter but with a few differences: tweets are called toots, it’s populated by tusksome mammals instead of little birds, and it’s designed to run in a decentralised manner – anyone can set up their own ‘instance’ and connect to everyone else using the GNU Social protocol.

Colin Wright and I both jumped on the bandwagon fairly early on, and realised it might be just the thing for mathematicians who want to be social: the 500 character limit leaves plenty of room for good thinkin’, and the open-source software means you can finally achieve the ultimate dream of maths on the web: LaTeX rendering!

Carnival of Mathematics 145


Carnival of Mathematics LogoWelcome to the 145th Carnival of Mathematics, hosted here at The Aperiodical.

If you’re not familiar with the Carnival of Mathematics, it’s a monthly blog post, hosted on some kind volunteer’s maths blog, rounding up their favourite mathematical blog posts (and submissions they’ve received through our form) from the past month, ish. If you think you’d like to host one on your blog, simply drop an email to and we can find an upcoming month you can do. On to the Carnival!

Logically Policed

This is a nice short documentary by student filmmaker Damiano Petrucci about mathematics and mathematicians, why they do maths and how they communicate it. It’s got a load of names you’ll recognise, including Oxford’s Ben Green and Aperiodipal Matt Parker.

via Colin Wright, who’s also in it!

A new recreational mathematics magazine from the Ludus Association


Imagine, if you will, a group of people who enjoy recreational mathematics and consequently decide that there should be more places for them to share fun maths. It’s crazy and unprecedented, I know, but humour me.

Recreational Mathematics Magazine does what it says on the tin. It’s a semiannual electronic journal published by the Ludus Association addressing “games and puzzles, problems, mathmagic, mathematics and arts, history of mathematics, math and fun with algorithms, reviews and news.”

The minch, the mound and the light-gigaminch

On Wednesday 27th November 2013, friend of The Aperiodical and standup mathematician Matt Parker tweeted a link to his latest YouTube video.

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In the video Matt apologises for some remarks on the imperial number system that he made in an earlier Number Hub video about the A4 paper scale. He then goes into some of the quirkiness of the many imperial number units used for measuring length. It is an unusual ‘apology’, although very entertaining.

This got me thinking about how I think about lengths, and I tweeted that I often think in ‘metric-imperial’ units of length, or multiples of exactly 25mm in my job as a civil and structural engineer – a metric inch, if you like. Colin Wright suggested the name ‘minch’ for these units; there are then two score minch to the metre.

We’ll be back after these messages

Some news from the world of capitalism: various maths people have things you can spend money on. Our roving reporters investigate.

Maths on Screen DVDsmaths on screen


Maths Inspiration, a maths theatre show which has been touring the country for a few years providing large-scale theatre shows for GCSE and A-Level students, has now released a set of DVDs of a special series of talks, which were filmed earlier this year.