I think a bowling ball would actually just be a solid topologically. The finger holes are just indentations rather than holes that go all the way through. IANAT, though.
Ok correct, technically I guess the outer 2D surface of a bowling ball is a pair of pants. For the entire 3D object to qualify, the holes would have to be connected internally.
https://en.m.wikipedia.org/wiki/Pair_of_pants_(mathematics)
Huh. So mathematically, I guess a bowling ball is a pair of pants.
I think a bowling ball would actually just be a solid topologically. The finger holes are just indentations rather than holes that go all the way through. IANAT, though.
Ok correct, technically I guess the outer 2D surface of a bowling ball is a pair of pants. For the entire 3D object to qualify, the holes would have to be connected internally.