Results 31 to 40 of about 240 (146)
Endomorphism rings and subgroups of finite rank torsion-free Abelian groups [PDF]
Rocky Mountain Journal of Mathematics, 1982 David M. Arnold
openalex +3 more sources
The classification problem for S-local torsion-free abelian groups of finite rank
Advances in Mathematics, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Simon Thomas
openaire +4 more sources
Solving logistic tasks by parallelizing algorithms of the theory of direct decompositions of torsion-free abelian groups [PDF]
E3S Web of Conferences, 2023 The paper considers the principles of parallelization at marshalling yards and determines their importance. There are presented the methods for direct decompositions of torsion-free Abelian groups of finite rank.
Blagoveshchenskaya E. +2 more
doaj +1 more source
On the splittability of factor groups of torsion-free Abelian groups of finite rank [PDF]
Czechoslovak Mathematical Journal, 1961 Ladislav Procházka
openalex +2 more sources
A theorem on quasi-pure-projective torsion free abelian groups of finite rank [PDF]
Pacific Journal of Mathematics, 1980 C. Vinsonhaler, W. Wickless
openalex +4 more sources
Structure of Finite-Dimensional Protori
Axioms, 2019 A Structure Theorem for Protori is derived for the category of finite-dimensional protori (compact connected abelian groups), which details the interplay between the properties of density, discreteness, torsion, and divisibility within a finite ...
Wayne Lewis
doaj +1 more source
Discussiones Mathematicae - General Algebra and Applications, 2017 It is studied how rank two pure subgroups of a torsion-free Abelian group of rank three influences its structure and type set. In particular, the criterion for such a subgroup B to be a direct summand of a torsion-free Abelian group of rank three with ...
Najafizadeh Alireza, Woronowicz Mateusz
doaj +1 more source
Groups with minimax commutator subgroup [PDF]
International Journal of Group Theory, 2014 A result of Dixon, Evans and Smith shows that if $G$ is a locally (soluble-by-finite) group whose proper subgroups are (finite rank)-by-abelian, then $G$ itself has this property, i.e. the commutator subgroup of~$G$ has finite rank.
Francesco de Giovanni, Trombetti
doaj
Which singular tangent bundles are isomorphic?
Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.Abstract Logarithmic and b$ b$‐tangent bundles provide a versatile framework for addressing singularities in geometry. Introduced by Deligne and Melrose, these modified bundles resolve singularities by reframing singular vector fields as well‐behaved sections of these singular bundles.
Eva Miranda, Pablo Nicolás
wiley +1 more source
Countable ℵ0-indecomposable mixed abelian groups of finite torsion-free rank
Journal 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
Shelah, Saharon, Soifer, Alexander
openaire +2 more sources