Self-pseudoprojective completely decomposable Abelian groups.
Self-small products of abelian groups
Let and be two abelian groups. The group is called -small if the covariant functor commutes with all direct sums and is self-small provided it is -small. The paper characterizes self-small products applying developed closure properties of the classes of relatively small groups. As a consequence, self-small products of finitely generated abelian groups are described.
Sous-groupes fonctoriels et relativisations
Splitting of mixed abelian groups.
Tensor product and quasi-splitting of Abelian groups
The Balance of Tor.
The Burnside Ring of a Cyclic Extension of a Torus.
The construction of -solvable Abelian groups
The homological dimension of a torsion-free abelian group of finite rank as a module over its ring of endomorphisms
The Structure of Ext (A,..) and V = L.
Torsion groups in cortorsion classes
Un ejemplo de teoría de homotopía en los grupos abelianos.
Una proprietà caratteristica dei gruppi abeliani torsionalmente completi
Unital Rings whose Additive Endomorphisms Commute.
Various local global principles for abelian groups.
We discuss local global principles for abelian groups by examining the adjoint functor pair obtained by (left adjoint) sending an abelian group A to the local diagram L(A) = {Z(p) ⊗ A → Q ⊗ A} and (right adjoint) applying the inverse limit functor to such diagrams; p runs through all integer primes. We show that the natural map A → lim L(A) is an isomorphism if A has torsion at only finitely many primes. If A is fixed we answer the genus problem of identifying all those groups B for which the local...
Абелевы группы конечного ранга без кручения и их прямые разложения
Двойственность в некоторых классах абелевых групп без кручения конечного ранга
Двойственные сервантности, связь между -сервантностями и сервантностями, заданными системами уравнений
К теореме Мановцева-Кузьминова.
К теории Изоморфизмов прямых разложений в категориях