Operations on locally free classgroups, by Bernhard Koeck

Let G be a finite group and K a number field. We show that the 
"k-th Adams operation" defined by Cassou-Nogues and Taylor on the 
locally free class group Cl(Z_K G) is a symmetric power operation, 
if k is coprime to the order of G. Using the equivariant 
Adams-Riemann-Roch theorem, we furthermore give a geometric 
interpretation of a formula established by Burns and Chinburg for 
these operations.