Results 141 to 150 of about 228,669 (269)

On perspective Abelian groups

open access: yesCommunications in Algebra
As a special case of perspective R-modules, an Abelian goup is called perspective if isomorphic summands have a common complement. In this paper we describe many classes of such groups.
Calugareanu, Grigore, Chekhlov, Andrey
openaire   +2 more sources

Riemann surfaces with a quasi large abelian group of automorphisms

open access: yesLe Matematiche, 2011
In this work we classify all Riemann surfaces having a quasi large abelian group of automorphisms, i.e. having an abelian group of automorphisms of order strictly bigger than 2(g−1), where g denotes the genus of the Riemann surface.
Roberto Pignatelli, Carmen Raso
doaj  

Complexes in Abelian Groups [PDF]

open access: bronze, 1954
Peter Scherk, J. H. B. Kemperman
openalex   +1 more source

Infinite Abelian Groups

open access: yes, 1970
When the theory of groups was first introduced, the attention was on finite groups. Now, the infinite abelian groups have some into their own. the results obtained in infinite abelian groups are very interesting and penetrating in other branches of Mathematics.
openaire   +3 more sources

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