This is a bit of a shaggy dog story, but I think it’s fun. There’s also a moral about the nature of mathematical research. Once I was interested in the McGee graph, nicely animated here by Mamouka ...

It was fun showing people the great images created by Refurio Anachro, Greg Egan, Roice Nelson, Gerard Westendorp and many other folks. For more info on the images I talked about, read on….

Guest post by John Bourke. The next International Category Theory Conference CT2025 will take place at Masaryk University (Brno, Czech Republic) from Sunday, July 13 and will end on Saturday, July 19, ...

I’m giving a talk next Friday, March 14th, at 9 am Pacific Daylight time here in California. You’re all invited! (Note that Daylight Savings Time starts March 9th, so do your calculations carefully if ...