### 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.

Bernhard Koeck <Bernhard.Koeck@math.uni-karlsruhe.de>