Comment on How about the digestive system?
All spheres are hollow (mathematically)
is x²+y²+z²<=r² not considered a sphere then?
Nope. That’s a ball. A closed ball to be precise. Spheres refers specifically to the “=” part.
halvar@lemy.lol 5 weeks ago
is x²+y²+z²<=r² not considered a sphere then?
stevedice@sh.itjust.works 2 weeks ago
Nope. That’s a ball. A closed ball to be precise. Spheres refers specifically to the “=” part.