Gjesteforelesninger og seminarer - Side 30

Tobias Erhardt (Technische Universität, München) will give a seminar in the lunch area, 8th floor N.H. Abel's House at 14:15 November 24th.

Arnaud Brothier, Vanderbilt University (USA) will give a talk with title: Analytic properties for subfactors

Abstract:

I will discuss analytic properties for groups and their generalizations to subfactors, standard invariants, and certain tensor categories.

I will present a class of subfactor planar algebras that are constructed with a group acting on a bipartite graph.

I will show that if the group satisfies a given approximation property (such as amenability, Haagerup property, or weak amenability), then the subfactor planar algebra satisfies it as well.

I will exhibit an infinite family of subfactor planar algebras with non-integer index that are non-amenable, have the Haagerup property, and have the complete metric approximation property.

Paul Krühner (TU Wien) gives a lecture with the title: Time change equations for Lévy type processes

Rough paths and rough partial differential equations

Robert Jenssen (University of Tromsø) will give a seminar in the lunch area, 8th floor N.H. Abel's House at 14:15 November 10th.

The Tuesday statistics seminar on November 10th at the Mathematics department is unfortunately canceled.

PIV investigation of the flow structures developing in a parallel valves Diesel engine cylinder during the intake stroke.  

In this talk I will present the Real algebraic K-theory construction of Hesselholt and Madsen, and discuss some on-going joint work with Ib Madsen. Real algebraic K-theory is a functor that to a ring A with anti-involution associates a genuine C_2-equivariant spectrum KR(A). Here C_2 denotes the cyclic group of order two. The underlying spectrum of KR(A) has the homotopy type of K(A), the usual K-theory space of A in the sense of Quillen, and the C_2-fixed point spectrum is weakly equivalent to the Hermitian K-theory of A. I will talk about generalizations of known theorems for algebraic K-theory to KR, including delooping results, "fundamental" theorems and group completion.

Mark van de Wiel (Vrije Universiteit, Amsterdam) will give a seminar in the lunch area, 8th floor N.H. Abel's House at 14:15 November 3rd.

Torstein Kastberg Nilssen (University of Oslo) holds a lecture with the title: Rough path transport equation with discontinuous drift.

The universe in a computer: how mathematical and numerical methods are essential

Sandra Di Rocco, KTH, gives the Seminar in Algebra and Algebraic Geometry

Toric vector bundles

Håkon Robbestad Gylterud, Stockholm Universitetet

Alfons van Daele (Leuven) will give a talk with title: The Haar measure on quantum groups

Abstract: At this moment, there is no theory of locally compact quantum groups with axioms from which one can prove the existence of the Haar weights. In general, the existence is part of the axioms. There are however a few cases where the existence can be proven. This is true for compact quantum groups and for discrete quantum groups. We will discuss some aspects of these proofs and see which of them are useful in the general case.

Prof. Paul Switzer (Stanford, Dept. of Statistics) will give a seminar in the lunch area, 8th floor N.H. Abel's House at 14:15 October 20th.

Hydrodynamics and adhesion of soft interfaces

David Ruiz Baños gives a talk with the title: "Optimal bounds and Hölder continuous densities of solutions of SDEs with measurable and path-dependent drift coefficients"

Francesco Cavazzani, Harvard University, gives the Seminar in Algebra and Algebraic Geometry:

Complete twisted cubics

Prof. Alan Gelfand (Duke University, Dept. of Statistical Science) will give a seminar in room 108, ground floor N.H. Abel's Building at 15:15 October 13th.

Prof. Mike West (Duke University, Dept. of Statistical Science) will give a seminar in room 108, ground floor N.H. Abel's House at 14:15 October 13th.

Ingrid Hobæk Haff is giving her inaugural lecture with the title: Parameter estimation for pair-copula constructions.

Mathematical Institute, University of Oxford

Martin Gulbrandsen, UiS, gives the Seminar in Algebra and Algebraic Geometry

The dual cell complex of Hilbert scheme degenerations  

Judith Packer, University of Colorado (Boulder), USA, will give a talk with title: Wavelets associated to representations of higher-rank graph C*-algebras

Abstract: Let $\Lambda$ denote a finite $k$-graph in the sense of A. Kumjian and D. Pask that is strongly connected, and let $\Lambda^{\infty}$ denote its infinite path space. I discuss some recent joint work with C. Farsi, E. Gillaspy, and S. Kang, where we construct a system of functions that we call ``wavelets" on a Hilbert space of square-integrable functions on $\Lambda^{\infty}.$ In so doing, we generalize work of M. Marcolli and A. Paolucci for finite directed graphs to the higher rank case. The key tool is the construction of a representation of the graph $C^*$-algebra $C^{\ast}(\Lambda)$ on $L^2(\Lambda^{\infty},M)$ for the appropriate measure $M.$ When the finite $k$-graph $\Lambda$ in question is strongly connected and aperiodic, the representation of $C^{\ast}(\Lambda)$ that we obtain is faithful.

Fabian Krüger (Heidelberg Institute for Theoretical Studies) will give a 30 min seminar in the lunch area, 8th floor N.H. Abel's House at 14:45 September 29th.