Butler groups splitting over a base element
Tom 109 / 2007
Colloquium Mathematicum 109 (2007), 297-305 MSC: Primary 20Kxx. DOI: 10.4064/cm109-2-11
We characterize a particular kind of decomposition of a Butler group that is the general case for Butler $B(1)$-groups; and exhibit a decomposition of a $B(2)$-group which is not of that kind.