RIS ID
109915
Abstract
A scale-multiplicative semigroup in a totally disconnected, locally compact group G is one for which the restriction of the scale function on G is multiplicative The maximal scale-multiplicative semigroups in groups acting 2-transitively on the set of ends of trees without leaves are determined and shown to correspond to geometric features of the tree.
Grant Number
ARC/DP0984342
Publication Details
Baumgartner, U., Ramagge, J. & Willis, G. A. (2016). Scale-multiplicative semigroups and geometry: automorphism groups of trees. Groups, Geometry, and Dynamics, 10 (3), 1051-1075.