Google announced I/O 2022 with an SVD puzzle revealing the conference dates, and it’s now ending it with Playground, a “sound toy” that lets you “create your own Euclidean rhythms and melodies.” ...
In this article we prove two characterizations of the Euclidean ball: (i) the only convex body in ℝ³ such that every normal plane bisects the volume (or surface area) is the Euclidean ball, (ii) the ...