IX Jornada de Álgebra - 04-06 Maio 2017, UEM, Maringá, Brasil. Invited Speaker, Plenary talk: Grupóides e suas ações sobre C*-álgebras
I Encontro Em Categorias Tensoriais E Suas Representações, 02-03 Março 2017, UFSC, Florianópolis, Brasil. Invited Speaker. Title of the talk: Simetrias não-comutativas: Um tratamento bicategórico
XXI Coloquio Latinoamericano de Álgebra - Buenos Aires - Argentina, 25-29 July 2016. Invited Speaker. Title of the talk: Groupoid fibrations and their C*-algebras
Workshop on New Directions in Inverse Semigroups - Ottawa - Canada, 01-04 June 2016.
Workshop on Dynamical Systems and Operator Algebras - Ottawa - Canada, 29 May - 01 June 2016. Invited Speaker. Title of the talk: Inverse semigroups, groupoids and their actions on C*-algebras
Workshop on C*-algebras: Geometry and Actions - Münster - Germany, 13-17 July 2015. Speaker. Title of the talk: Symmetries of Noncommutative Spaces
I organized, together with Daniel Gonçalves, Vladimir Pestov, and Marcelo Sobottka, the Workshop on Functional Analysis and Dynamical Systems - Florianópolis - Brazil, 23-27 Fev 2015.
Partial Actions and Representations Symposium (PARS) - Gramado - Brazil, 11-15 May 2014. Speaker. Title of the talk: Actions of inverse semigroups on groupoids by partial equivalences
Análise funcional geométrica e ações de grupos (Geometric functional analysis and group actions) - Florianópolis - Brazil, 19-21 Feb 2014. Invited Speaker. Title of the talk: Weakly proper actions, imprimitivity theorems and duality
SFB Miniworkshop on C*-Algebras, C*-Bundles, and Group Actions - Münster - Germany, 25-29 November 2013.
Noncommutative Geometry - Oberwolfach - Germany, 8 Sep - 14 Sep 2013.