Results 81 to 90 of about 11,644 (234)

A Bilinear Bogolyubov Argument in Abelian Groups

open access: yesDiscrete Analysis
A bilinear Bogolyubov argument in abelian groups, Discrete Analysis 2024:20, 41 pp. Bogolyubov's argument states that if $A$ is a dense subset of $\mathbb Z_n$, then $2A-2A=\{x+y-z-w:x,y,z,w\in A\}$ contains a large and highly structured subset known ...
Luka Milićević
doaj   +1 more source

Some special classes of n-abelian groups [PDF]

open access: yesInternational Journal of Group Theory, 2012
Let n be an integer. A group G is said to be n-abelian if the map phi_n that sends g to g^n is an endomorphism of G. Then (xy)^n=x^ny^n for all x,y in G, from which it follows [x^n,y]=[x,y]^n=[x,y^n]. It is also easy to see that a group G is n-abelian if
Costantino Delizia, Antonio Tortora
doaj  

Extending Topological Abelian Groups by the Unit Circle

open access: yesAbstract and Applied Analysis, 2013
A twisted sum in the category of topological Abelian groups is a short exact sequence 0→Y→X→Z→0 where all maps are assumed to be continuous and open onto their images. The twisted sum splits if it is equivalent to 0→Y→Y×Z→Z→0.
Hugo J. Bello   +2 more
doaj   +1 more source

Harmonic Synthesis on Group Extensions

open access: yesMathematics
Harmonic synthesis describes translation invariant linear spaces of continuous complex valued functions on locally compact abelian groups. The basic result due to L.
László Székelyhidi
doaj   +1 more source

NORMAL 6-VALENT CAYLEY GRAPHS OF ABELIAN GROUPS

open access: yesInternational Journal of Industrial Engineering and Production Research, 2008
: We call a Cayley graph Γ = Cay (G, S) normal for G, if the right regular representation R(G) of G is normal in the full automorphism group of Aut(Γ). In this paper, a classification of all non-normal Cayley graphs of finite abelian group with valency 6
M. Alaeiyan
doaj  

Non-abelian extensions and Wells exact sequences of Hom-pre-Lie algebras

open access: yesMathematics Open
In this paper, we investigate non-abelian extensions of Hom-pre-Lie algebras and extensibility of pairs of automorphisms about non-abelian extensions.
Qinxiu Sun, Weiping Jiao
doaj   +1 more source

Certain finite abelian groups with the Redei k-property [PDF]

open access: yesInternational Journal of Group Theory, 2013
Three infinite families of finite abeliab groups will be described such that each members of these families has the Redei k-property for many non-trivial values of k.
Sandor Szabo
doaj  

Strongly semisimple abelian groups [PDF]

open access: yesPacific Journal of Mathematics, 1974
Beaumont, R. A., Lawver, D. A.
openaire   +3 more sources

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