Greg Egan on Nostr: nprofile1q…jsaev I said some hand-wavy things about that here, but there are some ...

nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqyxxu3fkku2jfpuuhesaexzuhh6z5al0rjjs292kcvcryxc35v02q9jsaev (nprofile…saev)

I said some hand-wavy things about that here, but there are some nice pictures of 4-dimensional stacks of cannon balls:

https://golem.ph.utexas.edu/category/2009/07/nichomachus_of_gerasa.html#c025267