Valuated Butler groups of special type
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László Fuchs, Gerhardus Viljoen (1999)
Czechoslovak Mathematical Journal
Laszlo Fuchs (1976/1977)
Groupe d'étude d'algèbre Groupe d'étude d'algèbre
Ivan Chajda (1992)
Czechoslovak Mathematical Journal
George Peschke, Peter Symonds (1994)
Publicacions Matemàtiques
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...
Martin Ziegler, Rüdiger Göbel (1988/1989)
Mathematische Zeitschrift
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