North Atlantic Noncommutative Geometry Seminar

June 11, 2025, 5:15 p.m.
GILLES GONÇALVES DE CASTRO (Universidade Federal de Santa Catarina, Florianópolis, Brazil)
TBA

June 4, 2025, 5:15 p.m.
ELIEZER BATISTA (Universidade Federal de Santa Catarina, Florianópolis, Brazil)
TBA

May 28, 2025, 5:15 p.m.
FABIO EUGENIO GIOVANNI CIPRIANI (Politecnico di Milano, Italy)
TBA

May 21, 2025, 5:15 p.m.
MARKUS B. FRÖB (Universität Leipzig, Germany)
TBA

May 14, 2025, 5:15 p.m.
PAWEL SARKOWICZ (University of Waterloo, Canada)
TBA

May 7, 2025, 5:15 p.m.
RUY EXEL (Universidade Federal de Santa Catarina, Florianópolis, Brazil)
TBA

April 30, 2025, 5:15 p.m.
EUN JI KANG (Seoul National University, South Korea)
TBA

April 23, 2025, 5:15 p.m.
ALCIDES BUSS (Universidade Federal de Santa Catarina, Florianópolis, Brazil)
TBA

April 16, 2025, 5:15 p.m.
ROBERTA ISEPPI (Georg-August-Universität Göttingen, Germany)
TBA

April 9, 2025, 5:15 p.m.
IVÁN RUIZ CAMPOS (Universidad de Málaga, Spain)
TBA

April 2, 2025, 5:15 p.m.
MARIUSZ TOBOLSKI (Uniwersytet Wrocławski, Poland)
GLUING TOPOLOGICAL-GRAPH C*-ALGEBRAS (GLUING TOPOLOGICAL-GRAPH C*-ALGEBRAS)
Katsura's topological-graph C*-algebras generalize graph C*-algebras and homeomorphism C*-algebras. In this talk, I will present a class of topological-graph C*-algebras coming from noncommutative topology that are not graph C*-algebras, notably the C*-algebras of odd-dimensional Hong-Szymański …

March 26, 2025, 5:15 p.m.
ŁUKASZ KACZMARCZYK (Uniwersytet Warszawski, Poland)
INFORMATION GEOMETRY OF BAYESIAN UPDATING AND REPLICATION (INFORMATION GEOMETRY OF BAYESIAN UPDATING AND REPLICATION)
In this talk, I will show that the Kullback-Leibler divergence can be promoted to a functor from probabilistic spaces to convex polyhedra with a distinguished convex function. Both domain and codomain of this functor enjoy …

March 19, 2025, 5:15 p.m.
GÁBOR ETESI (Budapesti Műszaki és Gazdaságtudományi Egyetem, Hungary)
AN OPERATOR ALGEBRAIC CHARACTERIZATION OF THE VACUUM EINSTEIN EQUATION IN FOUR DIMENSIONS (AN OPERATOR ALGEBRAIC CHARACTERIZATION OF THE VACUUM EINSTEIN EQUATION IN FOUR DIMENSIONS)
In this talk, a new approach to the vacuum Einstein equation on four dimensional Riemannian manifolds (i.e. the Einstein condition on a four dimensional Riemannian metric) is offered in the framework of dynamical systems on …

March 12, 2025, 5:15 p.m.
JACOPO BASSI (MPAN, Warszawa, Poland)
ON ISOMETRIES FOR SPECTRAL TRIPLES ON AF ALGEBRAS (ON ISOMETRIES FOR SPECTRAL TRIPLES ON AF ALGEBRAS)
In this talk, I will discuss some results on the structure of natural non-commutative analogues of groups of isometries for the spectral triples on AF-algebras introduced by Christensen and Ivan. This is a joint work …

March 5, 2025, 5:15 p.m.
MARCELO LACA (University of Victoria, Canada)
A HIGH-TEMPERATURE PHASE TRANSITION FROM NUMBER THEORY (A HIGH-TEMPERATURE PHASE TRANSITION FROM NUMBER THEORY)
Let S be the semidirect product of the multiplicative positive integers acting on the integers, with the operation (a,m)(b,n) = (ab,bm+n), where a and b are positive. In previous joint work with Astrid an Huef …