Tensor product and quasi-splitting of Abelian groups
The nonseparability of simply presented mixed groups
It is demonstrated that an isotype subgroup of a simply presented abelian group can be simply presented without being a separable subgroup. In particular, the conjecture based on a variety of special cases that Warfield groups are absolutely separable is disproved.
The pseudorational rank of an Abelian group.
The splitting of the tensor product of two mixed abelian groups of rank one
Trivial units in commutative group algebras.