ACTIONS OF FINITE GROUPS ON COMMUTATIVE RINGS ANDINVARIANT IDEALS
GROUPS
COMMUTATIVE
Let R be a commutative ring with ١, and let Aut(R) denote the group of ring
automorphisms of R. We will usually consider a group G⊆ Aut(R).
In this paper we will study the relation between G- invariant ideals and their traces.
Also we study C.P modules and C.F modules.