A brief journey through extensions of rational groups (Q2414660)
From MaRDI portal
scientific article
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A brief journey through extensions of rational groups |
scientific article |
Statements
A brief journey through extensions of rational groups (English)
0 references
17 May 2019
0 references
Summary: Let \(A\) and \(B\) be rational groups, i.e. torsion-free groups of rank-1 and thus subgroups of the rational numbers. This paper gives a short overview of the structure of \(\mathrm{Ext}(A,B)\) especially considering some interesting classes of torsion-free pairs.
0 references
abelian group
0 references
extension
0 references
rational group
0 references
torsion-free group
0 references
