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cambio de titulo en sesion 24 charla de Pere Ara

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Germán Correa 2021-09-10 10:50:19 -03:00
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@ -1363,7 +1363,7 @@
- nombre: Damián Ferraro - nombre: Damián Ferraro
mail: damian@cmat.edu.uy mail: damian@cmat.edu.uy
charlas: charlas:
- titulo: Leavitt path algebras and graph C*-algebras associated to separated graphs - titulo: Separated graphs and dynamics.
abstract: | abstract: |
<p>A separated graph is a pair \((E,C)\), where \(E\) is a directed graph, \(C=\bigsqcup _{v\in E^ 0} C_v\), and \(C_v\) is a partition of \(r^{-1}(v)\) (into pairwise disjoint nonempty subsets) for every vertex \(v\). In recent years, separated graphs have been used to provide combinatorial models of several structures, often related to dynamical systems. This can be understood as a generalization of the common use of usual directed graphs in symbolic dynamics. I will survey some of these developments, including the failure of Tarski's dichotomy in the setting of topological actions, the construction of a family of ample groupoids with prescribed type semigroup, and the modeling of actions on the Cantor set.</p> <p>A separated graph is a pair \((E,C)\), where \(E\) is a directed graph, \(C=\bigsqcup _{v\in E^ 0} C_v\), and \(C_v\) is a partition of \(r^{-1}(v)\) (into pairwise disjoint nonempty subsets) for every vertex \(v\). In recent years, separated graphs have been used to provide combinatorial models of several structures, often related to dynamical systems. This can be understood as a generalization of the common use of usual directed graphs in symbolic dynamics. I will survey some of these developments, including the failure of Tarski's dichotomy in the setting of topological actions, the construction of a family of ample groupoids with prescribed type semigroup, and the modeling of actions on the Cantor set.</p>
start: 2021-09-17T15:00 start: 2021-09-17T15:00