DMFT is grateful for the last minute. Hello! My name is Colin and I am a mathematician on a mission to spread the joy and delight of doing maths and solving problems. Today I went to a school in Poole to talk about my career in maths and computing as part of Dorset Coding Week.…
What on earth is the infinite least squares beanstalk?

I’m trying something a bit different. Here’s a ten-minute video about a sequence I found on the OEIS.
Carnival of Maths 244

The next issue of the Carnival of Mathematics, rounding up blog posts from the month of September 2025, is now online at IoannaGeorgiou.com. The Carnival rounds up maths blog posts from all over the internet, including some from our own Aperiodical. See our Carnival of Mathematics page for more information.
Aperiodical News Roundup – August/September 2025

Here’s a round-up of maths news stories from this month we haven’t otherwise covered on the Aperiodical (not including, of course, the important enneahedron news Christian just posted about).
Breaking enneahedron news!

A nice person called Payton Asch sent me an email with an observation about the Herschel enneahedron: It looks like the underlying polytope for the enneahedron is a triangular bipyramid (two tetrahedra stacked on top of each other) or the dual polytope would be a triangular prism. In the case of the triangular bipyramid you…
#mathober 2025

We’ve gone crashing into October and that means it’s also #Mathober, an annual maths/art celebration taking place on the internet. If you’re into maths or art, or both, and would like to try producing something creative this month, on an informal schedule, #mathober provides a structure for you to do that.
Double Maths First Thing: Issue 38
DMFT wants to be in the room where it happens Hello! My name is Colin and I am a mathematician on a mission to spread joy and happiness in doing maths, solving puzzles and generally figuring stuff out. We went to see Hamilton (the musical, not Academical) in the cinema at the weekend – I…