Tidligere gjesteforelesninger og seminarer - Side 57
Friday seminar by Vadim B. Fedorov from University of Alaska Fairbanks
Ann-Cecilie Larsen, Post.doc., Dep. of Physics/SAFE, University of Oslo
Parameter-robust finite element discretization and its preconditioning for Biot's consolidation model in poroelasticity
Erik Bédos will give a talk with title: On the Fourier-Stieltjes algebra of a C*-dynamical system
Abstract: When G is a discrete group, its Fourier-Stieltjes algebra B(G) may be described as the set of coefficient functions associated with unitary representations of G on Hilbert spaces. In a similar way, if Sigma=(A, G, alpha, sigma) is a unital discrete twisted C*-dynamical system, one may let the Fourier-Stieltjes algebra B(Sigma) consist of the functions from G x A into A that arise as coefficient functions of equivariant representations of Sigma on Hilbert A-modules. We will explain how B(Sigma) may be organized as an algebra with conjugation, and show that it may be represented as completely bounded multipliers on the full crossed product C*(Sigma). (This is also known to be true for the reduced crossed product). This is part of an ongoing project with Roberto Conti (Rome).
Carl Henrik Gørbitz, Professor - Kjemisk institutt
Arvid Siqveland, Høgskolen i Buskerud og Vestfold, gives the Seminar in Algebra and Algebraic Geometry:
Modular curves V
These are the fifth and and the sixth lectures given by Anders Hansen (Cambridge Univ. and UiO) on Compressed sensing - Theory and Applications.
These are the third and fourth lectures given by Anders Hansen (Cambridge Univ. and UiO) on Compressed sensing - Theory and Applications.
Friday seminar by Frietson Galis from Naturalis Biodiversity Center, The Netherlands
Signe Riemer-Sørensen, ITA
Professor Berit Smestad Paulsen retired from her position at the School of Pharmacy December 31st 2014. The School of Pharmacy will organize a scientific symposium in order to honor and appreciate her. The symposium will be organized on Friday March 20th 2015.
Fredrik Meyer, UiO, gives the Seminar in Algebra and Algebraic Geometry:
Modular curves IV
Olav Breivik (Dept. of Math., UiO ) gives a seminar in room 107, 1st floor N.H. Abels House at 14:15 March 17th: Bycatch of juvenile cod in the Barents Sea shrimp fishery
Katrine Borgå, AQUA
Friday seminar by Miriam Maas from the National Institute for Public Health and the Environment, The Netherlands.
Line Drube, German Aerospace Center Institute of Planetary Research
Arne B. Sletsjøe, UiO, gives the Seminar in Algebra and Algebraic Geometry:
Modular curves III
Sam Sanders, Ghent and Munich, will give a lecture with the tittle
On the contingency of predicativism.
Franz Luef (NTNU) will give a talk with title "Sigma-models solitons on noncommutative spaces"
Abstract: Results from time-frequency analysis and Gabor analysis allow the construction of new classes of sigma-model solitons over the Moyal plane and over noncommutative tori, taken as source spaces, with a target space made of two points. A natural action functional leads to self-duality equations for projections in the source algebra. Solutions, having non-trivial topological content, are constructed via suitable Morita duality bimodules. This is joint work with L. Dabrowski and G. Landi.
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
Benjamin Racine, Postdoctoral Fellow , ITA
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.)
The talk will focus on "Nanoparticle interaction with early human placenta", an upcoming topic in reproductive toxicology.