Tidligere arrangementer - Side 111

Nils Chr. Stenseth, Professor of Ecology and Evolution at Department of Biosciences, University of Oslo  

Antoine Julien (NTNU) will give a talk with title: Tiling spaces, groupoids and K-theory

Abstract:

 In this talk, I will describe how spaces, groupoids and C*-algebras can be associated with aperiodic tilings. In some cases, it is possible to describe the structure of the groupoid combinatorially in terms of augmented Bratteli diagrams. (joint work with Jean Savinien) Time permitting, I will expose a strategy for computing the K-theory of the tiling algebra in terms of the K-theory of AF-algebras (work in progress).

Friday seminar by Jakob Hemmer Hansen

Shahin Jafarzadeh, Post-Doctoral Researcher, ITA

David Ruiz Ba?os (University of Oslo) holder et seminar med tittelen: On the regularity of densities of SDE's. A classical solution to the stochastic transport equation

Jeonghun J. Lee (Aalto University, Helsinki) will give a talk about

On unified analysis of mixed methods for elasticity with weakly symmetric stress.

Abstract: We introduce a framework to construct and analyze mixed finite elements for elasticity with weakly symmetric stress. The framework is based on a connection between mixed methods for elasticity and mixed methods for Stokes equations. We show that some new finite elements can be obtained from it with optimal error bounds.

Friday seminar by Wolfram M. K¨¹rschner

Rajib Dutta (University of Oslo) will give a seminar talk on

Operator splitting methods for Benjamin-Ono (BO) equation

Abstract: We consider the BO equation which describes one-dimensional internal waves in deep water. In this talk, we show that both Godunov and Strang splitting methods converge with the expected rates if the initial data are sufficiently smooth. We also present a proof of convergence of a fully discrete finite difference scheme for this equation.  

Takuya Takeishi, University of Tokyo, will give a talk with title: Bost-Connes system for local fields of characteristic zero

Abstract: The Bost-Connes system, which describes the relation between quantum statistical mechanics and class field theory, was first constructed by Bost and Connes for the rational field, and generalized for arbitrary number fields by the contribution of many researchers. In this talk, we will introduce a generalization of the Bost-Connes sysmtem for local fields of characteristic zero, and introduce some properties.

Friday seminar by Merete Eggesb?

Terje Berntsen, Professor Dept. of Geosciences, University of Oslo

Prof. Dr. Stefan Ankirchner (University of Bonn) holder et seminar med tittelen: The Skorokhod embedding problem for homogeneous diffusions and applications to stopping contests

The 14th Annual Winter School of eVITA/SINTEF will be held January 19-24th 2014 in Geilo. The topic for the 2014 school is Big data challenges to modern statistics, with several internationally renowned experts giving a series of lectures on the subject.  Read more on the SINTEF website of the winter school (external link).  

 Knut Christian Myhre, Postdoktor - Sosialantropologisk institutt

The logic seminar will take place in B63 in NHA on Thursdays from 10.15 to 12.00.

The program is tentative. There are free slots in the program. Contact Dag Normann for suggestions or questions.

Hanna Zdanowicz (Univeritetet i Oslo) holder et seminar med tittelen: Pricing of energy spread options by Fourier transform

Giuseppe Coclite, University of Bari.

In this lecture we consider a model for the harvesting of marine  resources, described by a parabolic equation. Since the cost functionals have sublinear growth with respect to the  pointwise intensity of fishing effort, optimal solutions are in general measure-valued. For the control problem, we prove the existence of optimal strategies. The results were obtained in collaboration with Professor Mauro  Garavello.  

Bhavna Rathore, PhD Student, ITA

CEES Extra seminar by Anne Laudisoit

Friday seminar by Margaret Beaton

CEES Extra seminar by Jeffrey A. Hutchings. Note the day.

A General Framework for Implementing Conservation-law Solvers

Friday seminar by Bruce R. Levin from Emory University, Atlanta, Georgia, USA. Note the time!