Results 21 to 30 of about 204 (52)

External definability and groups in NIP theories

open access: yes, 2014
We prove that many properties and invariants of definable groups in NIP theories, such as definable amenability, G/G^{00}, etc., are preserved when passing to the theory of the Shelah expansion by externally definable sets, M^{ext}, of a model M.
Chernikov, Artem   +2 more
core   +2 more sources

Finite groups and Lie rings with an automorphism of order $2^n$

open access: yes, 2015
Suppose that a finite group $G$ admits an automorphism $\varphi $ of order $2^n$ such that the fixed-point subgroup $C_G(\varphi ^{2^{n-1}})$ of the involution $\varphi ^{2^{n-1}}$ is nilpotent of class $c$.
Khukhro, E. I.   +2 more
core  

Mekler's construction and generalized stability

open access: yes, 2018
Mekler's construction gives an interpretation of any structure in a finite relational language in a group (nilpotent of class $2$ and exponent $p>2$, but not finitely generated in general).
Chernikov, Artem, Hempel, Nadja
core  

Model-theoretic properties of nilpotent groups and Lie algebras

open access: yes, 2023
We give a systematic study of the model theory of generic nilpotent groups and Lie algebras. We show that the Fra\"iss\'e limit of 2-nilpotent groups of exponent $p$ studied by Baudisch is 2-dependent and NSOP$_{1}$.
d'Elbée, Christian   +3 more
core  

Product of Polycyclic-By-Finite Groups (PPFG) [PDF]

open access: yes, 2019
In this paper we show that If the soluble-by-finite group G=AB is the product of two polycyclic-by-finite subgroups A and B, then G is polycyclic-by ...
Razzaghmaneshi, Behnam
core   +1 more source

Verbal functions of a group [PDF]

open access: yes, 2014
Daniele Toller, "Verbal functions of a group", in: Rendiconti dell’Istituto di Matematica dell’Università di Trieste. An International Journal of Mathematics, 46 (2014), pp.71-99The aim of this paper is the study of elementary algebraic subsets of a ...
Toller, Daniele
core   +1 more source

S. N. Chernikov and the development of infinite group theory [PDF]

open access: yes, 2012
In this survey, the authors want to show the development and continuation of some studies, in which S.N.Chernikov stood as the main originator and to demonstrate clearly the extent of influence exerted by the ideas and results of S.N.Chernikov on the ...
Dixon, M.R.   +6 more
core   +1 more source

On lattices of generalized subnormal subgroups in finite metanilpotent groups [PDF]

open access: yes
Решена проблема Шеметкова об описании наследственных насыщенных решеточных формаций и решеточных подгрупповых функторов в классе всех конечных метанильпотентных ...
Васильев, А. Ф.   +1 more
core  

Mekler's Construction and Murphy's Law for 2-Nilpotent Groups

open access: yes
Mekler's construction is a powerful technique for building purely algebraic structures from combinatorial ones. Its power lies in the fact that it allows various model-theoretic tameness properties of the combinatorial structure to transfer to the ...
Boissonneau, Blaise   +2 more
core  

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