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ORIENTATION OF PIECEWISE POWERS OF A MINIMAL HOMEOMORPHISM
Published online by Cambridge University Press: 15 November 2021
Abstract
We show that, given a compact minimal system
$(X,g)$
and an element h of the topological full group
$\tau [g]$
of g, the infinite orbits of h admit a locally constant orientation with respect to the orbits of g. We use this to obtain a clopen partition of
$(X,G)$
into minimal and periodic parts, where G is any virtually polycyclic subgroup of
$\tau [g]$
. We also use the orientation of orbits to give a refinement of the index map and to describe the role in
$\tau [g]$
of the submonoid generated by the induced transformations of g. Finally, we consider the problem, given a homeomorphism h of the Cantor space X, of determining whether or not there exists a minimal homeomorphism g of X such that
$h \in \tau [g]$
.
MSC classification
- Type
- Research Article
- Information
- Journal of the Australian Mathematical Society , Volume 113 , Issue 2 , October 2022 , pp. 226 - 256
- Copyright
- © The Author(s), 2021. Published by Cambridge University Press on behalf of Australian Mathematical Publishing Association Inc.
Footnotes
Communicated by Anthony Henderson
Research funded by ARC project FL170100032.
References
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