G'day all.
On Sat, Jul 19, 2003 at 01:52:32AM -0400, Dylan Thurston wrote:
> It's maybe easiest to think in terms of group theory with an
> action on a set: you're just distinguishing between the multiplication
> of group elements and the actual action. This distinction is not
> usually reflecte
On Saturday, 2003-07-19, 07:52, CEST, Dylan Thurston wrote:
> [...]
> But if you have -Point, then you have a 0 Point, and there's no distinction
> between Points and Vectors at all!
Yes, I always thought (and still think) that the (main) difference between
points in affine geometry and radius v
