2 citations · 3 across the 3 of their papers we have counts for
3 papers
math.GR2014
The Tits alternative for non-spherical triangles of groups
Johannes Cuno, Jörg Lehnert
Triangles of groups have been introduced by Gersten and Stallings. They are, roughly speaking, a generalisation of the amalgamated free product of two groups and occur in the frame…
math.GR2012★ 1 cited
Linear and projective boundary of nilpotent groups
Bernhard Krön, Jörg Lehnert, Norbert Seifter +1
We define a pseudometric on the set of all unbounded subsets of a metric space. The Kolmogorov quotient of this pseudometric space is a complete metric space. The definition of the…
math.GR2007★ 2 cited
Some remarks on depth of dead ends in groups
Jörg Lehnert
It is known, that the existence of dead ends (of arbitrary depth) in the Cayley graph of a group depends on the chosen set of generators. Nevertheless there exist many groups, whic…