Re: multiplicative group question

From: Kristian Gjøsteen (
Date: 07/04/05

Date: Mon, 4 Jul 2005 07:05:45 +0000 (UTC)

David Wagner <> wrote:
>Kristian Gjøsteen wrote:
>>Isn't the following a trivial example? Hom(Z_n*,Z_n*) is a ring, [..]

Oops, I meant the subring containing the maps x -> x^a for some
integer a.

>How do you represent elements of Hom(Z_n*,Z_n*) efficiently?

When you perform group operations on the maps, the representation grows.
That's what I was missing. Sorry.

Kristian Gjøsteen