In abstract algebra, a torsion abelian group is an abelian group in which every element has finite order.[1] For example, the torsion subgroup of an abelian group is a torsion abelian group.
^Dummit, David; Foote, Richard. Abstract Algebra, ISBN 978-0471433347, pp. 369
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of abeliangroups, the torsion subgroup AT of an abeliangroup A is the subgroup of A consisting of all elements that have finite order (the torsion elements...
mathematics, an abeliangroup, also called a commutative group, is a group in which the result of applying the group operation to two group elements does...
torsion abelian group is an abeliangroup in which every element has finite order. A torsion-free abeliangroup is an abeliangroup in which the identity element...
abeliangroup: every finite abeliangroup is a direct sum of primary cyclic groups. Denote the torsion subgroup of G as tG. Then, G/tG is a torsion-free...
Hamiltonian group is a direct product of the form G = Q8 × B × D, where B is an elementary abelian 2-group, and D is a torsionabeliangroup with all elements...
In mathematics, the rank, Prüfer rank, or torsion-free rank of an abeliangroup A is the cardinality of a maximal linearly independent subset. The rank...
algebraic number theory, an abelian variety is a projective algebraic variety that is also an algebraic group, i.e., has a group law that can be defined by...
In mathematics, a torsion sheaf is a sheaf of abeliangroups F {\displaystyle {\mathcal {F}}} on a site for which, for every object U, the space of sections...
In mathematics, a free abeliangroup is an abeliangroup with a basis. Being an abeliangroup means that it is a set with an addition operation that is...
that A(K), the group of points on A over K, is a finitely-generated abeliangroup. A great deal of information about its possible torsion subgroups is known...
In mathematics, specifically in the field of group theory, a divisible group is an abeliangroup in which every element can, in some sense, be divided...
divisible abeliangroup whose torsion subgroup is the same as the torsion subgroup of T {\displaystyle \mathbb {T} } . Mathematics portal Group of rational...
generated abeliangroups as the torsiongroups that cannot be expressed as a direct sum of two non-trivial groups. As such they, along with the group of integers...
In abeliangroup theory, an abeliangroup is said to be cotorsion if every extension of it by a torsion-free group splits. If the group is M {\displaystyle...
theory, the torsion conjecture or uniform boundedness conjecture for torsion points for abelian varieties states that the order of the torsiongroup of an abelian...
nilpotent group is a group that is "almost abelian". This idea is motivated by the fact that nilpotent groups are solvable, and for finite nilpotent groups, two...
For example, the p-torsion of an elliptic curve in characteristic zero is locally isomorphic to the constant elementary abeliangroup scheme of order p2...
any abeliangroup, to deduce that the only simple abeliangroups are the cyclic groups of prime order. The classification of nonabelian simple groups is...
G-group; in effect, a generalization of a module to non-Abelian coefficients. These algebraic ideas are closely related to topological ideas. The group...
M. C. R. Butler (1965). Butler, M. C. R. (1965), "A class of torsion-free abeliangroups of finite rank", Proc. London Math. Soc., Series 3, 15: 680–698...
torsion-free abeliangroup is bi-orderable; this is still true for nilpotent groups but there exist torsion-free, finitely presented groups which are not...