Search Results - "Sokolov, V E"

On the Separability of Abelian Subgroups of the Fundamental Groups of Graphs of Groups. II by Sokolov, E. V.

“…Consider the fundamental group  of an arbitrary graph of groups and some root class  of groups, i.e., a class containing a nontrivial group and closed under…”
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On the Separability of Abelian Subgroups of the Fundamental Groups of Graphs of Groups. I by Sokolov, E. V.

“…We prove a structure theorem for the finitely generated abelian subgroups of the fundamental group of an arbitrary graph of groups and give some auxiliary…”
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On Conditions for the Approximability of the Fundamental Groups of Graphs of Groups by Root Classes of Groups by Sokolov, E. V.

“…Suppose that is a non-empty connected graph, is the fundamental group of a graph of groups over , and is a root class of groups (the last means that contains…”
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Certain residual properties of HNN-extensions with central associated subgroups by Sokolov, E. V.

“…Suppose that G is a group, H and K are proper isomorphic central subgroups of G, and is an HNN-extension of G with the associated subgroups H and K. We prove…”
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The Root-Class Residuality of the Fundamental Groups of Graphs of Groups by Sokolov, E. V.

“…Consider a class  of groups containing at least one nontrivial group and closed under subgroups, extensions, and Cartesian products of the form , where and  is…”
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The Root-Class Residuality of the Fundamental Groups of Certain Graphs of Groups with Central Edge Subgroups by Sokolov, E. V.

“…Consider a class  of groups which contains at least one nontrivial group and is closed under subgroups, extensions, and direct products of the form , where…”
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The Root-Class Residuality of Some Generalized Free Products and HNN-Extensions by Sokolov, E. V., Tumanova, E. A.

“…Given a root class  of groups, we establish some necessary and sufficient conditions for the -residuality of the free product of the two groups with…”
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Separability of the subgroups of residually nilpotent groups in the class of finite π-groups by Sokolov, E. V.

“…Given a nonempty set π of primes, call a nilpotent group π-bounded whenever it has a central series whose every factor F is such that: In every quotient group…”
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A Necessary Condition for The Residual Nilpotence of HNN-Extensions by Sokolov, E. V.

“…Let G be amultiple HNN-extension of a group A , and let all its associated subgroups be properly contained in some locally nilpotent subgroup of A . We prove…”
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Generalized Direct Products of Groups and their Application to the Study of Residuality of Free Constructions of Groups by Sokolov, E. V., Tumanova, E. A.

“…We introduce the construction of a generalized direct product associated with a graph of groups and prove two sufficient conditions for its existence. These…”
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The Root-Class Residuality of Tree Products with Central Amalgamated Subgroups by Sokolov, E. V., Tumanova, E. A.

“…Given a root class C of groups and a tree product P in which each amalgamated subgroup lies in the centers of the corresponding vertex groups, we point out…”
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On the Root-Class Residuality of Certain Free Products of Groups with Normal Amalgamated Subgroups by Sokolov, E. V., Tumanova, E. A.

“…Let K be a root class of groups closed under taking quotient groups, G be a free product of groups A and B with amalgamated subgroups H and K. Let also H be…”
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To the Question of the Root-Class Residuality of Free Constructions of Groups by Sokolov, E. V., Tumanova, E. A.

“…Let be a root class of groups and be the fundamental group of a graph of groups. We prove that if has a finite number of edges and there exists a homomorphism…”
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Educational Migration in Russian Regions: Statistical Approach by Pitukhin, E. A., Zyateva, O. A., Shchegoleva, L. V., Sokolov, V. E.

“…Educational migration plays an important role in the implementation of admission plans for applicants to higher education institutions in a significant number…”
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Root class residuality of HNN-extensions with central cyclic associated subgroups by Sokolov, E. V., Tumanova, E. A.

“…Let R be a root class of groups which is closed with respect to passage to quotient groups and contains at least one nonidentity group. A criterion for the R…”
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Development and Experimental Study of a Pulsed Megawatt Gyroklystron Operating in the Long-Wavelength Part of the Millimeter-Wavelength Range at IAP RAS by Zasypkin, E. V., Gachev, I. G., Sokolov, E.V., Antakov, I. I.

“…We have developed and studied experimentally a two-cavity gyroklystron operating at a frequency of 35 GHz and the cavity mode TE 0 2 1 in a cryomagnet. The…”
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Necessary conditions of the approximability of generalized free products and HNN-extensions of groups by Kuvaev, A. E., Sokolov, E. V.

“…We obtain a generalization of Shirvani’s results on necessary conditions of residual finiteness of generalized free products and HNN-extensions of groups to…”
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Change of hydrological and morphometric characteristics of Kuyalnik Liman after inflow of seawater by Adobovsky, V. V., Sokolov, E. V.

“…The water level of the liman, volume and area of surface reduced to record low values as a result of intensification of evaporation process in 2014. By the…”
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Towards Defining the Pathogenesis of the Hairless Phenotype by Panteleyev, Andrei A., van der Veen, Carina, Rosenbach, Thomas, Müller-Röver, Sven, Sokolov, Vladimir E., Paus, Ralf

“…Mutation of the hairless (hr) gene in mice causes severe abnormalities during the first hair follicle regression (catagen), resulting in complete baldness…”
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Detailed Investigations of Neutron–Neutron Angular Correlations in Slow-Neutron-Induced Fission of 233U, 235U, and 239Pu by Guseva, I. S., Gagarski, A. M., Sokolov, V. E., Petrov, G. A., Vorobyev, A. S., Val’sky, G. V., Zavarukhina, T. A.

“…An experiment devoted to studying neutron–neutron angular correlations in the slow-neutroninduced fission of 233 U, 235 U and 239 Pu nuclei was performed. The…”
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