I’m trying something a bit different. Here’s a ten-minute video about a sequence I found on the OEIS.
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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 would truncate each of the vertices around the “equator” deep enough until the truncated areas meet at a vertex.
The Herschel enneahedron on Numberphile
Me! On Numberphile! Who would’ve thought it?
Earlier this year, Brady Haran visited Newcastle to record a video with some Leverhulme scholars. Luckily for me he had a bit of spare time to record a video with me, so we did one about the Herschel enneahedron, which I first looked at back in 2013.
There were a few common questions among the comments on YouTube. I thought I’d quickly respond to them here.
Any way you cut it
I’d like to cut a rectangle into a 3×4 grid of squares. To minimise the number of cuts, should I cut three long strips first, or four short strips? Does it matter?
The Big Internet Math-Off 2024, the final!
Here’s the final match of The Big Internet Math-Off.
Over the past month, we’ve heard from 16 interesting mathematicians and whittled them down to just 2. Today, we’re pitting Matt Enlow against Angela Tabiri to determine The World’s Most Interesting Mathematician (2024, of the people who I asked to take part and were available).
Take a look at both pitches, vote for the bit of maths that made you do the loudest “Aha!”, and if you know any more cool facts about either of the topics presented here, please write a comment below!
The Big Internet Math-Off 2024, Semi-final 2
Here’s the second semi-final match of The Big Internet Math-Off. Today, we’re pitting Angela Tabiri against Ayliean.
Take a look at both pitches, vote for the bit of maths that made you do the loudest “Aha!”, and if you know any more cool facts about either of the topics presented here, please write a comment below!
The Big Internet Math-Off 2024, Semi-final 1
Here’s the first semi-final match of The Big Internet Math-Off. Today, we’re pitting Fran Herr against Matt Enlow.
Take a look at both pitches, vote for the bit of maths that made you do the loudest “Aha!”, and if you know any more cool facts about either of the topics presented here, please write a comment below!