Note on the extensions of Butler groups
1990 ◽
Vol 41
(1)
◽
pp. 117-122
◽
In terms of a new notion, called prebalancedness, those extensions of a Butler group by a Butler group which are again Butler groups are characterised. It is shown that the prebalanced extensions of torsion-free abelian groups form a divisible subgroup in the group of extensions.
Keyword(s):
2006 ◽
Vol 06
(02)
◽
pp. 233-251
◽
Keyword(s):
2011 ◽
Vol 43
(6)
◽
pp. 1198-1204
2007 ◽
Vol 35
(3)
◽
pp. 1055-1072
◽
1985 ◽
Vol 93
(2)
◽
pp. 227-227
◽