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Gjesteforelesninger og seminarer

Kommende 5 dager

04 mar
Tid og sted: 4. mar. 2015 14:15 - 16:00, NHA B735

Bartosz K. Kwaśniewski (University of Southern Denmark, Odense) will talk on: Topological aperiodicity for product systems of C*-correspondences

Abstract:We introduce a semigroup of multivalued maps dual to a product system of $C^*$-correspondences over an Ore semigroup. Under a certain aperiodicity condition on the dual semigroup we obtain a uniqueness theorem and a simplicity criterion for the associated Cuntz-Pimsner algebra. These results generalize similar statements for crossed products by groups (R. J. Archbold, J. S. Spielberg) and Exel’s crossed products (R. Exel, A. Vershik). They also give interesting conditions for topological higher rank graphs, and apply to the new Cuntz $C^*$-algebra $\mathcal{Q}_\mathbb{N}$ arising from the `$ax+b$'-semigroup over natural numbers. (Based on joint work with Wojciech Szymański.)

Flere kommende gjesteforelesninger og seminarer

Tid og sted: 5. mar. 2015 12:05 - 13:00, Store fys aud, The Physics Building

Talk by Erik Adli

Tid og sted: 6. mar. 2015 11:15 - 12:00, Rom 304 (Peisestua), Institutt for teoretisk astrofysikk

Benjamin Racine, Postdoctoral Fellow , ITA

Tid: 10. mar. 2015 14:15

John Dagsvik ( Statistics Norway ) gives a seminar in room 107, 1st floor N.H. Abels House at 14:15 March 10th:  How Does the Temperature Vary over Time?  Evidence on the Stationary and Fractal  Nature of Temperature Fluctuations

Tid og sted: 13. mar. 2015 11:15 - 12:00, Rom 304 (Peisestua), Institutt for teoretisk astrofysikk
Line Drube, German Aerospace Center Institute of Planetary Research
Tid og sted: 13. mar. 2015 14:15 - 15:00, Seminar room 3508

Friday seminar by Miriam Maas from the National Institute for Public Health and the Environment, The Netherlands. Update: Note the change of date.