J. Aust. Math. Soc.
78 (2005), 2736

Abelian groups whose subgroup lattice is the union of two intervals

Simion Breaz
Faculty of Mathematics
and Informatics
BabesBolyai University
ClujNapoca
Romania
bodo@math.ubbcluj.ro



Grigore Calugareanu
Dept. Mathematics and Computer Sci
Faculty of Science
Kuwait University
State of Kuwait
calu@mcs.sci.kuniv.edu.kw



Abstract

In this note we characterize the abelian groups
which have two different proper subgroups
and such that the subgroup lattice
is the union of these intervals.

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