Results 21 to 30 of about 24,182 (180)

Torsion-free abelian groups of finite rank projective as modules over their endomorphism rings

open access: bronzeJournal of Algebra, 1981
Donald M. Arnold   +4 more
semanticscholar   +4 more sources

Finite rank torsion-free abelian groups uniserial over their endomorphism rings [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1985
An abelian group is E E -uniserial if its lattice of fully invariant subgroups is totally ordered. Finite rank torsion-free reduced E E -uniserial groups are characterized. Such a group is a free module over the center C C of its endomorphism ring, and C C is a strongly ...
Jutta Hausen
  +5 more sources

A matrix description for torsion free abelian groups of finite rank

open access: yesRendiconti del Seminario Matematico della Università di Padova, 2020
We describe torsion free abelian groups of finite rank applying matrices with polyadic entries. This description can be considered as a modification of the classic description by A. I. Mal'cev.
A. Fomin
openaire   +3 more sources

The classification of torsion-free abelian groups of finite rank up to isomorphism and up to quasi-isomorphism [PDF]

open access: hybrid, 2011
The isomorphism and quasi-isomorphism relations on the $p$-local torsion-free abelian groups of rank $n\geq3$ are incomparable with respect to Borel reducibility.
Samuel Coskey
openalex   +2 more sources

A note on quasi-isomorphism of torsion free abelian groups of finite rank [PDF]

open access: bronzeCzechoslovak Mathematical Journal, 1965
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ladislav Procházka
openalex   +4 more sources

Countable ℵ0-indecomposable mixed abelian groups of finite torsion-free rank

open access: bronzeJournal of Algebra, 1986
A group is \(\aleph_ 0\)-indecomposable if it cannot be decomposed into a direct sum of \(\aleph_ 0\) non-zero summands. In this paper the authors find necessary and sufficient conditions for an extension of a countable reduced torsion abelian group T by a finite rank torsion-free abelian group R to be \(\aleph_ 0\)-indecomposable. These conditions are
Saharon Shelah, Alexander Soifer
openalex   +4 more sources

On controllers of prime ideals in group algebras of torsion-free abelian groups of finite rank

open access: green, 2003
In the presented paper we consider some methods of studying of prime ideals in group algebras of abelian groups of finite ...
A. V. Tushev
openalex   +4 more sources

On the $p$-rank of torsion-free Abelian groups of finite rank [PDF]

open access: bronzeCzechoslovak Mathematical Journal, 1962
Ladislav Procházka
openalex   +2 more sources

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