Tidligere arrangementer - Side 92

Youssef Ouknine (Cadi Ayyad University, Marrakesh, Morocco) gives a lecture with the title: Optimal stopping with f-expectations: the irregular case.

Khalifa Essebaly (Cadi Ayyad University, Marrakesh, Morocco) gives a lecture with the title: Optimal rates for parameter estimation of stationary Gaussian processes.

By Jeffrey Hutchings from Dept. of Biology, Dalhousie University, Canada & CEES

Lan Zhang (University of Illinois at Chicago, Department of Finance) will give a seminar in the lunch area, 8th floor Niels Henrik Abels hus at 14:15. 

ESOP seminar. Rohini Pande is the Mohammed Kamal Professor of Public Policy at Harvard Kennedy School. She will present a paper entitled "E-governance, Accountability, and Leakage in Public Programs: Experimental Evidence from a Financial Management Reform in India", co-authored by Abhijit Banerjee, Esther Duflo, Clement Imbert, and Santhosh Mathew.

John Webb, Professor at University New South Wales, Australia

Professor Kathy Willis, Director of Science, Royal Botanic Gardens, Kew

By Mihaela Pavlicev from Cincinnati Children's Hospital Medical Center

Riccardo De Bin (Department of Mathematics, University of Oslo) will give a seminar in the lunch area, 8th floor Niels Henrik Abels hus at 14:15.

ESOP seminar. Manudeep Bhuller is an Associate Professor at the University of Oslo. He will present a paper entitled "Incarceration, recidivism and employment".

The classical s-cobordism theorem classifies completely h-cobordisms from a fixed manifold, but it does not tell us much about the relationship between the two ends. In the talk I will present some old and new results about this. I will also discuss how this relates to a seemingly different problem: what can we say abobut two compact manifolds M and N if we know that MxR and NxR are diffeomorphic? This is joint work with Slawomir Kwasik, Tulane, and Jean-Claude Hausmann, Geneva.

I will survey the connection between the space H(M) of h-cobordisms on a given manifold M, several categories of spaces containing M, Waldhausens algebraic K-theory A(M), and the algebraic K-theory of the suspension ring spectrum S[?M] of the loop space of M. The results extend the h-cobordism theorem of Smale and the s-cobordism theorem of Barden, Mazur and Stallings to a parametrized h-cobordism theorem, valid in a stable range established by Igusa, first discussed by Hatcher and finally proved and published by Waldhausen, Jahren and myself.

Sune Toft, Dark Cosmology Centre, Niels Bohr Institute

Elizabeth Gillaspy, p.t. M¨¹nster (Germany) will give a talk with title "Wavelets and spectral triples for higher-rank graphs"  

ESOP organises a workshop on "Globalisation, Migration and the Labour Market" in relation to the European Strains research project. 

Erik B?lviken (University of Oslo) gives a lecture with the title: Where models meet reality - The Solvency II regulation of  European insurance

Kimmo Kainulainen, University of Jyvaskyla

The Oslo-Seminar in Mathematical Logic will take place at the same time and in the same location as in the previous terms.

Thursdays 10.15 - 12.00 in the meeting room of floor 9 in the computer science building.

The Barratt nerve BSd X of the Kan subdivision Sd X of a simplicial set X \in sSet is a triangulation. The Barratt nerve is defined as taking the poset of non-degenerate simplices, thinking of it as a small category and then finally taking the nerve.Waldhausen, Jahren and Rognes (Piecewise linear manifolds and categories of simple maps) named this construction 'the improvement functor' because of the homotopical properties and because its target is non-singular simplicial sets. A simplicial set is said to be 'non-singular' if its non-degenerate simplices are embedded. There is a least drastic way of making a simplicial set non-singular called 'desingularization', which is a functor D:sSet -> nsSet that is left adjoint to the inclusion. The functor DSd^{^2} is the left Quillen functor of a Quillen equivalence where the model structure on sSet is the standard one where the weak equivalences are those that induce weak homotopy equivalences and the fibrations are the Kan fibrations. I will talk about the main steps of the proof that the natural map DSd X -> BX is an isomorphism for regular X. This implies that DSd^{^2} is a triangulation and that the improvement functor is less ad hoc than it may seem. Furthermore, I will explain how the result provides evidence that any cofibrant non-singular simplicial set is the nerve of some poset.