I would call it a thickened torus. I don't know how standard that is, but it is quite normal to speak of thickened manifolds, where one means a regular neighbourhood of that manifold times a closed interval.
I have long felt that there should be a mathematical dictionary- not an encyclopaedia, by a dictionary- in order to fix and record standard usage.
|
2 | deleted 3 characters in body | ||
|
|
||||
|
|
1 |
|
||
|
I would call it a thickened torus. I don't know how standard that is, but it is quite normal to speak of thickened manifolds, where one means a regular neighbourhood of that manifold. |
||||
