Double Maths First Thing keeps getting bumped to the next room
Hello! My name is Colin and I am a mathematician on a mission to spread delight and joy in mathematical thinking and practice.
This week, the kids are at a sailing course. I’ve never quite understood how it’s possible to sail into the wind, so I’m looking forward to them explaining this to me.
Links
A nice puzzle via Mair in the Finite Group discord: you have a triangle with an obtuse angle, and need to divide it into triangles with only acute angles. How many triangles do you need?
At the brilliantly-titled Solutions Looking For Problems blog, Bryan Wolf wondered if there’s a ‘most-scrambled’ Rubik’s cube.
Here’s a thing of beauty: an alternative representation of the periodic table. There’s a wonderful collection of similar things at All Periodic Tables.
Also lovely: Christian Lawson-Perfect has implemented a simulation of a glass sudoku, in which cells move between energy states.
I haven’t put any time at all into examining the content of The Journal of Humanistic Mathematics, but at first glance it looks like an excellent project.
Lastly for this week, an overview of some of the things you can do in Lean, including making the maths haunted.
Currently
There’s a new Carnival of Maths, courtesy of Katie at the Aperiodical. I’m hosting the next one, and you can submit links here.
The TMiP animation challenge for July has closed, with a playlist of responses here. August’s challenge is Hilbert curves, which is always a good excuse to mention the flowsnake — and to point out that the next Finite Group livestream is on space-filling curves.
That’s all I’ve got for this week. If you have friends and/or colleagues who would enjoy Double Maths First Thing, do send them the link to sign up — they’ll be very welcome here.
If you’ve missed the previous issues of DMFT or — somehow — this one, you can find the archive courtesy of my dear friends at the Aperiodical.
Meanwhile, if there’s something I should know about, you can find me on Mathstodon as @icecolbeveridge, or at my personal website. You can also just reply to this email if there’s something you want to tell me.
Until next time,
C