Let T be the set of minimal
primes of a Krull domain A. If S is a subset of T, we form B = ∩AP for P ∈ S and
study the relation of the class group of B to that of A. We find that the class
group of B is always a homomorphic image of that of A. We use this type of
construction to obtain a Krull domain with specified class group and then
alter such a Krull domain to obtain a Dedekind domain with the same class
group.