Аннотация:
The aim of this short note is to revisit some old results about groups of intermediate growth and groups of the lamplighter type and to show that the Lamplighter group $L = \mathbb{Z}_2 \wr \mathbb{Z}$ is a condensation group and has a minimal presentation by generators and relators. The condensation property is achieved by showing that $L$ belongs to a Cantor subset of the space $\mathcal{M}_2$ of marked $2$-generated groups consisting mostly of groups of intermediate growth.
Ключевые слова:Lamplighter groups; groups of intermediate growth; space of marked groups; condensation groups.