Tidligere arrangementer - Side 44

Bjørn Jahren fortsetter seminaret om 4 mangfoldigheter.

Philip Jonathan (Shell Projects & Technology, U.K. and Lancaster University) and David Randell (Shell Projects & Technology  and Durham University) will give two talks:

Modelling extreme environments

and

Locating and quantifying gas emission sources using remotely obtained concentration data

Bjørn Jahren fortsetter seminaret om 4-mangfoldigheter og vil nå snakke om Clifford-algebraer, Spin-bunter og Spin^c-strukturer på 4-mangfoldigheter.

Wave measurements are traditionally performed in one of two locations: either at the sea surface or from below the surface. Both have their challenges and benefits.

Nortek is among those offering a subsurface wave measurement solution. This is done with acoustic Doppler current profilers. The presentation will discuss how subsurface wave measurements have evolved in the last decade. An emphasis will be placed on the challenges that exist and what has been done to expand the limits and improve the performance.

Asma Khedher (Technische Universität München) holder et seminar med tittelen: Stationarity of Ornstein-Uhlenbeck processes with stochastic speed of mean reversion

Geir Ellingsrud fortsetter seminaret om 4-mangfoldigheter.

Adam Skalski (IMPAN) will give a talk with title: Closed quantum subgroups of locally compact quantum groups and some questions of noncommutative harmonic analysis (based on joint work with Matt Daws, Pawel Kasprzak and Piotr Soltan)

Abstract: The notion of a closed subgroup of a locally compact group is a very straightforward concept, often featuring in classical harmonic analysis. I will discuss the possible extensions of this notion to the quantum setting, focusing on the comparison of the two definitions proposed by S. Vaes and S.L.  Woronowicz. I will describe some reformulations of these definitions and explain how they can beshown to be equivalent in many cases; I will also mention certain connections to other problems of quantum harmonic analysis.  

CANCELLED: Almut Veraart (Imperial College) holder et seminar med tittelen: Integer-Valued Trawl Processes: A Class of Stationary Infinitely Divisible Processes

Nicolai Stammeier, Westfälische Wilhelms-Universität Münster, will give a talk with title: Product Systems of Finite Type for Certain Algebraic Dynamics and their C*-algebras

Abstract: Let P be a lattice-ordered semigroup with unit acting on a discrete, abelian group G by injective endomorphisms with finite cokernel. Building on the work of Jeong Hee Hong, Nadia S. Larsen and Wojciech Szymanski on product systems of Hilbert bimodules and their KMS-states, one can associate a product system to this dynamical system that turns out to be of finite type. Imposing two additional conditions on the dynamics, namely independence of the endomorphisms for relatively prime elements in P and exactness, we derive presentations of the Nica-Toeplitz algebra and the Cuntz-Nica-Pimsner algebra. Moreover, the latter has lots of nice descriptions and is shown to be a unital UCT Kirchberg algebra.  

Geir Ellingsrud fortsetter seminaret om 4-mangfoldigheter og  om elliptiske fibrasjoner.

Kristina R. Dahl (Universitetet i Oslo) holder et seminar med tittelen: Duality methods for pricing contingent claims under short selling constraints

Geir Ellingsrud fortsetter seminaret om 4-mangfoldigheter og denne gangen snakker han om elliptiske fibrasjoner.

Paul Krühner (Universitetet i Oslo) holder et seminar med tittelen: On infinite dimensional modelling in electricity finance

Peter Müller (Division of Statistics + Scientific Computation, The University of Texas at Austin) will talk about

A Nonparametric Bayesian Model for Local Clustering

Geir Ellingsrud fortsetter seminaret om 4-mangfoldigheter

Vi vil gi en kortfattet intoduksjon til  algebraiske flater og en like kortfattet oversikt over Enriques-Kodaira klassifikasjonen.

Sara Blanco (Universitetet i Oslo) holder et seminar med tittelen: Forwards and spots in energy markets modelled by Lévy Semistationary Processes.

Kristoffer Herland Hellton (Department of Biostatistics, UiO) will talk about

Consistency in high-dimensional principal component analysis

Bjørn Jahren fortsetter seminaret om 4-mangfoldigheter i uke 8

(ikke seminar i uke 7).

Marcus K. V. Eriksson (Universitetet i Oslo) holder et seminar med tittelen: A valuation model with minimal and maximal constraints for swing options.

Roberto Conti, Universita La Sapienza (Rome), Italy, will give a talk with title: The dark side of the Cuntz algebras

Abstract: We provide an overview of our recent work on the automorphism group of Cuntz algebras and discuss a number of open problems. (Joint work with J.H. Hong and W. Szymanski).