Titlebook: Abelian Groups and Modules; International Confer Paul C. Eklof,Rüdiger Göbel Book 1999 Springer Basel AG 1999 Abelian group.Category theory

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Auf dem Weg zur Zweiten Moderne which the ring will act. We solve here a similar problem: given a ℚ-matrix . in the suitable class, build from it the Butler ..-groups for which . is a base change. The building procedure we give is an algorithm, easy to perform by hand in one-digit ranks.

Commission

ESO

Von der zweiten Gründerzeit zur Postmoderne a constructive fashion the question when an almost completely decomposable group has non-zero completely decomposable direct summands. A new invariant, the rank-width difference of . at τ, given by . is the exact rank of a maximal τ-homogeneous (completely decomposable) direct summand of .. We show

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https://doi.org/10.1007/978-3-322-86659-2(.)-module isomorphism from . to its endomorphism ring .(.). Groups which are isomorphic to the additive group of their endomorphism rings are called weak .-groups. The purpose of this article is to consider the apparently yet weaker condition that there be a homorphism from . onto the additive grou

Fsh238

https://doi.org/10.1007/978-3-531-90027-8We consider the connection and interplay between some well-known problems in modular group algebras and the structure of simply presented .-groups. New results in both areas are obtained.

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Auf dem Weg zur Zweiten ModerneWe will find normal forms of matrices which describe almost completely decomposable groups in the class of uniform groups defined by Dugas and Oxford [2] up to near-isomorphism. This problem is equivalent to the diagonal equivalence of matrices over ℤ.. ℤ.