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math.DS2019
Topological full groups of ultragraph groupoids as an isomorphism invariant
Gilles Gonçalves de Castro, Daniel Gonçalves, Daniel W van Wyk
We prove two isomorphism-invariance theorems for groupoids associated with ultragraphs. These theorems characterize ultragraphs for which the topological full group of an associate…
math.DS2018
Continuous shift commuting maps between ultragraph shift spaces
Daniel Gonçalves, Marcelo Sobottka
Recently a generalization of shifts of finite type to the infinite alphabet case was proposed, in connection with the theory of ultragraph C*-algebras. In this work we characterize…