- September 3, 2010 , Friday - 15h00 (Room P
3.10):
Steffen Roch
(Technische Universität Darmstadt, Germany)
" Spatial
discretization of restricted group C*-algebras "
Abstract. We consider spatial discretizations by
the finite section method of the
restricted group C*-algebra of a finitely generated discrete group,
which is represented as a concrete operator algebra via its
left-regular representation. Special emphasis is paid to the
quasicommutator ideal of the algebra generated by the finite sections
sequences and to the stability of sequences in that algebra. For both
problems, the sequence of the discrete boundaries plays an essential
role. Finally, for commutative groups and for free non-commutative
groups, the algebras of the finite sections sequences are shown to be
fractal.
- September 10, 2010 , Friday - 15h00 (Room P
3.10):
Torsten Ehrhardt
(University of California, Santa Cruz, USA)
" tba "
Past Seminars
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