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Stabilizers of direct composition series

open access: yes, 2018
Let R be a domain, V a left R-module, and L a composition series of direct summands of V. Our main results show that if U is a stabilizer group of L containing the McLain-group associated with L , then U determines the chain (L,⊆) uniquely up to ...
Göbel, Rüdiger, Droste, Manfred
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On direct sums of $\text{B}^{(1)}$-groups -- II

open access: yes, 2006
summary:$\operatorname{B}^{(1)}$-groups are a class of torsionfree Abelian groups of finite rank, part of the main class of Butler groups. In the paper C. Metelli, {\it On direct sums of $\operatorname{B}^{(1)}$-groups\/}, Comment. Math. Univ. Carolinae
Metelli, Claudia, De Vivo, Clorinda
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