Tidligere gjesteforelesninger og seminarer - Side 40

Tid:

In the past years there has been several publications on the association between acetaminophen during pregnancy and offspring ADHD symptoms. The aim of the webinar will be to present the recent study, discuss what it adds, and discuss what kind of future studies are needed.

Tid og sted: , Room 3508

by Dr. Dag Endresen, GBIF Node Manager for Norway at the Natural History Museum in Oslo.

Tid og sted: , Rom 304 (Peisestua), Institutt for teoretisk astrofysikk

Vasco Henriques, Postdoc, ITA

Tid og sted: , Hurricane, Sognsveien 77 b

I will discuss the algebra structure of the E_2-term of the mod 2 Adams spectral sequence for tmf, given by the cohomology Ext_{A(2)}(F_2, F_2) of A(2).  We (Bruner & Rognes) use Groebner bases to verify the presentation given by Iwai and Shimada, with 13 generators and 54 relations. Thereafter I will discuss the relationship between differentials and Steenrod operations in the Adams spectral sequence for E_\infty ring spectra.  

Tid og sted: , End of Line, Ullevål

Pawel Kasprzak (Warzaw) will give a talk with title " Quantum actions on discrete quantum spaces"

Abstract:

To any action of a compact quantum group on a von Neumann algebra which is a direct sum of factors we associate an equivalence relation corresponding to the partition of a space into orbits of the action. We show that in case all factors are finite-dimensional (i.e. when the action is on a discrete quantum space) the relation has finite orbits.  We then apply this

i) to generalize the classical theory of Clifford, concerning the restrictions of representations to normal subgroups, to the framework of quantum subgroups of discrete quantum groups, itself extending the context of closed normal quantum subgroups of compact quantum groups; ii) to the context of idempotent states showing that the  algebra of invariant elements is finite dimensional if and only if the corresponding state is normal. Joint work with K. De Commer, A. Skalski and P. Sołtan.

Tid og sted: , Rom 304 (Peisestua), Institutt for teoretisk astrofysikk

William Coulton, Princeton

Tid og sted: , Gates of Eden

When and how surface structure determines the dynamics of partial wetting  

Tid og sted: , Desolation Row, Sognsveien 77 B

I will discuss machine computations in a finite range, using Bruner's ext-program, of Ext over A, the mod 2 Steenrod algebra, and over A(2), the subalgebra of A generated by Sq^1, Sq^2 and Sq^4. These are the E_2-terms of the mod 2 Adams spectral sequences for S and tmf, respectively.

Tid og sted: , Hurricane

Sedimentation-diffusion equilibrium of Quincke rollers  

Tid og sted: , hurricane

Iceberg drift on dead water

Tid og sted: , Rom 304 (Peisestua), Institutt for teoretisk astrofysikk

Oscar Agertz, Researcher, Lund Observatory

 

Tid og sted: , Ullevål
Tid og sted: , Store fys aud

The Strategic Research Initiatives DIATECH and REALOMICS will present status and their plans for the future.

Tid og sted: , Gates of Eden

Erik Bedos (UiO) will give a talk with title "On Exel-Pardo algebras as Cuntz-Pimsner algebras"

Abstract:

In a joint work with S. Kaliszweski and J. Quigg (https://arxiv.org/pdf/1512.07302.pdf, to appear in JOT), we consider a continuous action of a locally compact group G on a topological graph E, equipped with a G-valued continuous cocycle, and show how to construct a C*-correspondence from these data, giving rise to a Toeplitz algebra and a Cuntz-Pimsner algebra. In the talk we will sketch this construction, but restrict ourselves to the discrete case. We will also describe these algebras in terms of generators and relations when E is row-finite. As a corollary we get that the associated Cuntz-Pimsner algebra coincides with the C*-algebra recently introduced by Exel and Pardo when E is finite and sourceless.  
 
Tid og sted: , Rom 304 (Peisestua), Institutt for teoretisk astrofysikk

Line Nybakk Akerholt, Head Librarian - Science Library

Tid og sted: , Hurricane

Reyna Ramirez

Tid og sted: , Ullevål
Tid og sted: , Gates of Eden, Ullevål

Nicolai Stammeier (Oslo) will give a talk with title: The inner structure of boundary quotients of right LCM semigroups  

Abstract: In joint work with Roberto Conti, Stefano Rossi, and Valeriano Aiello, we use semidirect products built from algebraic dynamical systems to model right LCM semigroups to study various structural aspects in connection with a selection of distinguished subalgebras of the associated boundary quotients. Our two guiding examples are integral dynamics as considered in work of Barlak - Omland - Stammeier, and exact injective group endomorphisms of discrete abelian groups with finite cokernel as studied by Cuntz and Vershik.

Tid og sted: , Seminar room 3508

By Erik Bonsdorff, professor of marine biology at Åbo Akademi University, Finland

Tid og sted: , Rom 304 (Peisestua), Institutt for teoretisk astrofysikk

Luc Blanchet, Directeur de Recherche au C.N.R.S., Institut d'Astrophysique de Paris

Tid og sted: , Ullevål

Eric Schaanning (Norges Bank) gives a lecture with the title: Interbank contagion and systemic risk: How robust are estimates?

Tid og sted: , Seminar room 3508

By Kathleen Pribyl, associate fellow at the Climatic Research Unit, University of East Anglia, Norwich, UK