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Generation and simplicity in the airplane rearrangement group.

Authors :
Tarocchi, Matteo
Source :
Groups, Geometry & Dynamics; 2024, Vol. 18 Issue 2, p603-634, 32p
Publication Year :
2024

Abstract

We study the group T<subscript>A</subscript> of rearrangements of the airplane limit space introduced by Belk and Forrest (2019). We prove that T<subscript>A</subscript> is generated by a copy of Thompson's group F and a copy of Thompson's group T, hence it is finitely generated. Then we study the commutator subgroup [T<subscript>A</subscript>; T<subscript>A</subscript>], proving that the abelianization of T<subscript>A</subscript> is isomorphic to Z and that [T<subscript>A</subscript>; T<subscript>A</subscript>] is simple, finitely generated and acts 2-transitively on the so-called components of the airplane limit space. Moreover, we show that TA is contained in T and contains a natural copy of the basilica rearrangement group T<subscript>B</subscript> studied by Belk and Forrest (2015). [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
16617207
Volume :
18
Issue :
2
Database :
Complementary Index
Journal :
Groups, Geometry & Dynamics
Publication Type :
Academic Journal
Accession number :
176788153
Full Text :
https://doi.org/10.4171/GGD/772