# Publications and Preprints

Involutions on the second duals of group algebras versus subamenable groups
by
Ajit Iqbal Singh
Let $L^1 (G)^{\ast \ast}$ be the second dual of the group algebra $L^1(G)$ of a locally compact group $G$. We study the question of involutions on $L^1 (G)^{\ast \ast}$. A new class of subamenable groups is introduced which is universal for all groups. There is no involution on $L^1(G)^{\ast \ast}$ for a subamenable group $G$.

isid/ms/2011/04 [fulltext]