# Talk:Group algebra

## Section heading for L1(G).

I suggest we remove the heading, and leave the content of that section so that it becomes part of the preceding section. CSTAR 14:51, 12 Oct 2004 (UTC)

## Need simple definition for finite groups

ToDo: The very first part of this article should describe the group algebra for finite groups. linas 04:58, 9 Mar 2005 (UTC)

Never mind, I just added the beast. I needed something simple so that I could explain young symmetrizer. linas 06:39, 9 Mar 2005 (UTC)

## Group C*-algebras

Now the group C*-algebras (maximal and reduced) are both defined twice.... --CSTAR 14:31, 29 October 2005 (UTC)

Yes ... I needed to think some more about that merge. Possibly there was little actually new in what I added. Charles Matthews 15:57, 29 October 2005 (UTC)

## Group ring and group C*-algebra

Some of the material in this article (group algebra) should be relocated to group ring. A while back, the material on group C*-algebra was transferred from the group ring article to here. However, I think there should be a separate article on Group C*-algebra of a locally compact group. --CSTAR 00:30, 27 October 2006 (UTC)

## Hopf and Frobenius structures

Any group algebra has the structure of a Hopf algebra and any group algebra for a finite group has the structure of a Frobenius algebra. Maybe someone should put that in. —Preceding unsigned comment added by 137.111.90.68 (talk) 02:07, 1 February 2008 (UTC)

## Group algebra over topological groups

I tried to check the inclusion of the support of the convolution product. I get a condition on existence of elements of G that map

${\displaystyle (Supp(g))^{-1}}$ to ${\displaystyle Supp(f)}$

oh, it actually works, but one has to understand that we really have a product on the support!!! — Preceding unsigned comment added by 131.169.87.137 (talkcontribs) 15:00, 15 June 2013 (UTC)