NCG seminar update
Emanuele Tuillier Illingworth
tuillier at sissa.it
Wed Jun 22 16:08:19 CEST 2016
*"NON-COMMUTATIVE GEOMETRY" SEMINAR
<https://www.math.sissa.it/content/non-commutative-geometry-seminars>*
Friday 24 June 2016 at 11:00
Venue: SISSA, Room 134
Jacopo Bassi (SISSA)
"Spectral Triples on Inductive Limit C*-Algebras"
Abstract:
The first classification result for infinite-dimensional C*-algebras is
a natural generalization of the finite-dimensional case when considering
M_n(C) as an inductive limit of itself over the identity *-homomorphism.
It concerns the relationship between AF-algebras and Bratteli diagrams,
or equivalently, K_0-groups. Adding more K-theoretical data a larger
class of inductive limit C*-algebras can be classified and other
inductive limits have been proven to be not in the Elliott conjecture
class.
In the category of C*-algebras, a central role is played by the strongly
self-absorbing ones and in the finite case the only known examples of
such are inductive limit C*-algebras.
A geometric analysis of these objects amounts first of all to the
construction of spectral triples on them. We discuss a way to do that
for a class of C*-algebras that covers the finite strongly
self-absorbing case using the interplay between the inductive limit
process and the eigenspace decomposition of the Dirac operators considered.
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