I have moved to @henryseg on mathstodon.xyz, a mastodon instance with a clearly superior domain name.
I'll be giving a public lecture at Duke University, Durham NC on Tuesday April 18! https://math.duke.edu/events/50880-plum-3d-shadows-casting-light-4th-dimension
New post on the #aperiodical, by me: Timetabling choreography with maths http://aperiodical.com/2017/04/timetabling-choreography-with-maths/ https://mastodon.social/media/8PxlZmIj7ySP6vQB6U0
Generalistic and moderated instance.