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Pontificia Universidad Javeriana
Wed 21 Sep 2016, 3:15pm
Topology and related seminars
ESB 4133 (PIMS Lounge)
Multiplicative structures and the twisted Baum-Connes assembly map
ESB 4133 (PIMS Lounge)
Wed 21 Sep 2016, 3:15pm-4:15pm


Using some ideas of Atiyah and Segal and a pushforward map defined using deformation groupoids we explain how to endow to the twisted geometric K-homology groups of a discrete group with an external product. Using the Baum-Connes assembly maps one can transfer this product to the twisted K-theory groups of the reduced group C*-algebra. This is a joint work with Noé Barcenas and Paulo Carrillo.