Publication status: has appeared in J. Algebra
245 (2001), 247-264; posted as
math.RA/0012201.
Abstract: We investigate the transfer of the Cohen-Macaulay property
from a commutative
ring R to a subring RG
of invariants under the action of a finite group G . Our point
of
view is ring theoretic and not a priori tailored to a particular type
of group action. As an
illustration, we briefly discuss the special case of multiplicative
actions, that is, actions on group
algebras k[Zn] via an action
on Zn .
Electronic preprint:
| dvi
68KB |
ps
176KB |