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

[Giovanni Lagnese]

> But what of other metric spaces and their equality-of-distance
> preserving mappings?  Do we get interesting groups for them?

For example, one can consider functional spaces equipped with the usual 
metric d(f,g) = sup|f-g|.
The group of inequality-of-distance preserving mappings of such a space 
seems that does not correspond to a usually studied group.

GL