Results 111 to 120 of about 2,666 (229)

Nilpotent and abelian Hall subgroups in finite groups [PDF]

open access: yes, 2016
First published in Transactions of the American Mathematical Society in volume 368 and number 4, APR 2016, published by the American Mathematical Society[EN] We give a characterization of the finite groups having nilpotent or abelian Hall pi-subgroups ...
Malle, Gunter   +7 more
core   +1 more source

Non-Abelian Groups with Many Abelian Subgroups [PDF]

open access: yes
[Italiano]: Il presente volume si basa in gran parte sulle lezioni di un corso di dottorato che ho tenuto all'inizio del 2024 presso il Dipartimento di Matematica e Applicazioni "Renato Caccioppoli" dell'Università degli Studi di Napoli Federico II.
Trombetti, Marco
core  

On the Hodge conjecture for products of certain surfaces [PDF]

open access: yes, 2003
In this thesis we prove the Hodge conjecture for products of smooth projective surfaces S(_1) x S(_2), where S(_2) = A is an Abelian surface and S (_1) is such that P(_g)(S(_1)) = 1, q = 2.
J. Ramón Marí, José   +1 more
core  

Groups with minimax commutator subgroup [PDF]

open access: yesInternational Journal of Group Theory, 2014
A result of Dixon, Evans and Smith shows that if $G$ is a locally (soluble-by-finite) group whose proper subgroups are (finite rank)-by-abelian, then $G$ itself has this property, i.e. the commutator subgroup of~$G$ has finite rank.
Francesco de Giovanni, Trombetti
doaj  

Tame logarithmic signatures of abelian groups

open access: yesJournal of Mathematical Cryptology, 2017
The security of the asymmetric cryptosystem MST1{{}_{1}} relies on the hardness of factoring group elements with respect to a logarithmic signature. In this paper we investigate the factorization problem with respect to logarithmic signatures of abelian ...
Reichl Dominik
doaj   +1 more source

On Projection-Invariant Subgroups of Abelian P-Groups

open access: yes, 2012
A subgroup P of an Abelian p-group G is said to be projection-invariant in G if Pf is contained in P for all idempotent endomorphisms f. Clearly fully invariant subgroups are projection invariant, but the converse is not true in general.
Goldsmith, Brendan
core   +1 more source

Quasi-co-local subgroups of abelian groups

open access: yes, 2007
Let {0}≠K be a subgroup of the abelian group G. In [J. Buckner, M. Dugas, Co-local subgroups of abelian groups, in: Abelian Groups, Rings, Modules, and Homological Algebra, in: Lect. Notes Pure and Appl. Math., vol.
Dugas, Manfred, Buckner, Joshua
core   +1 more source

Orbit decidability and the conjugacy problem for some extensions of groups

open access: yes, 2009
Given a short exact sequence of groups with certain conditions, 1 ? F ? G ? H ? 1, weprove that G has solvable conjugacy problem if and only if the corresponding action subgroupA 6 Aut(F) is orbit decidable.
Ventura, Enric   +2 more
core  

Fully inert subgroups of Abelian p-groups

open access: yes, 2014
A subgroup H of an Abelian group G is said to be fully inert in G, if for every endomorphism φ of G, the factor group (H + φ(H))/H is finite. This notion arises in the study of the dynamical properties of endomorphisms (entropy).
B. Goldsmith   +3 more
core   +1 more source

On Abelian group representability of finite groups

open access: yes, 2014
A set of quasi-uniform random variables X1,…,Xn may be generated from a finite group G and n of its subgroups, with the corresponding entropic vector depending on the subgroup structure of G.
Thomas, Eldho K.   +2 more
core   +1 more source

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