[FOM] A new geometry (in Klein´s sense)?

[lagnese@ngi.it]

Dana Scott wrote:
> I think it is easy to prove that when M = R^n and the distance
> is the usual n-dimensional Euclidean metric, then the group
> of such mappings is just the usual group rigid motions of
> Euclidean space.

f(v)=2v is in the group of such mappings but it is not a rigid motion.

GL