Rachel Skipper

activity

20162022

most citedAlmost-automorphisms of trees, cloning systems and finiteness properties

11 citations · 24 across the 12 of their papers we have counts for

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Showing 2017Show all

3 papers · 1 filter

math.GR2017

Simple groups separated by finiteness properties

Rachel Skipper, Stefan Witzel, Matthew C. B. Zaremsky

We show that for every positive integer $n$ there exists a simple group that is of type $F_{n - 1}$ but not of type $F_{n}$ . For $n \geq 3$ these groups are the first k…

math.GR2017

The congruence subgroup problem for a family of branch groups

Rachel Skipper

We construct a family of groups which generalize the Hanoi towers group and study the congruence subgroup problem for the groups in this family. We show that unlike the Hanoi tower…

math.GR2017★ 11 cited

Almost-automorphisms of trees, cloning systems and finiteness properties

Rachel Skipper, Matthew C. B. Zaremsky

We prove that the group of almost-automorphisms of the infinite rooted regular $d$ -ary tree $T_{d}$ arises naturally as the Thompson-like group of a so called $d$ -ary cloni…