Beyond True and False: Logic, Algebra and Topology (University of Florence, Italy, 3-5 December 2014)
Séminaire Philosophie et Mathématiques (École Normale Supérieure, Paris, France)
UNILOG 2015 (Instanbul, Turkey, 20-30 June 2015)
Workshop on duality in mathematics (Wuppertal University, Germany, 3-5 September 2015)