Results 81 to 90 of about 11,845 (129)

Subgroups Of Constructible Nilpotent-by-abelian Groups And A Generalization Of A Result Of Bieri, Neumann And Strebet

open access: yes, 2015
We prove a Σ-version of the result of Bieri, Neumann and Strebel [6] that for a finitely presented group G without free subgroups of rank 2 the set ∑1(G)c has no antipodal points. More precisely, we prove that for such a group G conv≤2(ℝ>0.∑1(G)c) ⊆ ℝ&
Kochloukova D.H.
core  

Minimal n-noids in hyperbolic and anti-de Sitter 3-space. [PDF]

open access: yesProc Math Phys Eng Sci, 2019
Bobenko AI, Heller S, Schmitt N.
europepmc   +1 more source

Lie groups as permutation groups: Ulam's problem in the nilpotent case

open access: yes
Ulam asked whether every connected Lie group can be represented on a countable structure. This is known in the linear case. We establish it for the first family of non-linear groups, namely in the nilpotent case.
Monod, Nicolas
core   +1 more source

ON A GENERALIZATION OF DEHN'S ALGORITHM. [PDF]

open access: yesInt J Algebra Comput, 2008
Goodman O, Shapiro M.
europepmc   +1 more source

On the Howson Property of HNN-Extensions with Nilpotent Base Group and Amalgamated Free Products of Nilpotent Groups

open access: yes, 2014
We give necessary and sufficient conditions under which an amalgamated free product of finitely generated nilpotent groups is a Howson group (that is the intersection of any two finitely generated subgroups is finitely generated). Also we prove that if G
Paramantzoglou, P.A.
core  

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