The video wherein David Bachman, Saul Schleimer and I finally explain what these cohomology fractals are: https://youtu.be/fhBPhie1Tm0
Big update to https://henryseg.github.io/cohomology_fractals - we now have all of the manifolds in the orientable SnapPy census up to 7 tetrahedra, and sliders to make linear combinations of cohomology classes (try m129). With David Bachman and Saul Schleimer.
If you're around the Oxford area on January 30th, I'll be giving a public lecture at 5pm, details: http://maths.ox.ac.uk/node/34486
Braiding gears. Three gears are linked in a chain, but you can “braid” them, rearranging how they connect to each other. Full video at https://youtu.be/Lh7yAbw0H24
New paper on the arXiv today with Saul Schleimer, "From veering triangulations to link spaces and back again" https://arxiv.org/abs/1911.00006
A variant of gripping gears adds “pass-through” holes so that a solid object can pass through the connection between the gears. Joint work with Will Segerman and Sabetta Matsumoto. Full video: https://youtu.be/RBZG8M8_a8Y
Gripping gears: two gears mesh with and rotate around each other, with no axles and no frame. Joint work with Will Segerman and Sabetta Matsumoto. Full video at https://youtu.be/ENFXnNtd3xU
Extensor cube in motion! Made by @christianp at the Talking Maths in Public conference today.
Added an option to view the edges of the tetrahedra in our Cannon-Thurston map explorer. This should make it easier to (eventually) explain a bit how the images are generated. https://henryseg.github.io/Cannon-Thurston
There's still work to do, but our Cannon-Thurston map explorer web app is already lots of fun to play around with. You can rotate the view with WASD and move with the arrow keys. The controls tab has lots of other options: different triangulations, colouring choices, etc. With Saul Schleimer and David Bachman.
This won't make much sense unless you're a three-manifold topologist. But in case you are, Saul Schleimer and I made a census of the first 87047 transverse veering structures, together with some analysis, and two styles of pictures of the first 5699 of them. http://math.okstate.edu/people/segerman/veering.html
Some new hyperbolic designs, and much more, available in T-shirt form from https://www.neatoshop.com/artist/Henry-Segerman
Mathematician working mostly in three-dimensional geometry and topology, and mathematical artist working mostly in 3D printing and virtual reality.
A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.
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