Gjesteforelesninger, seminarer og konferanser

Kommende

Tid og sted: 31. mars 2017 11:15 - 12:00, NHA 935

Perfeksjon fra bønne til kopp

Hvordan jobber Tim Wendelboe i sin jakt på den perfekte kopp med kaffe?

Tim er både kaffebonde, kaffebrenner og barista og vil gi deg et lite innblikk i alt arbeidet som ligger bak hver kopp kaffe som serveres i hans kaffebar på Grünerløkka.

Tid og sted: 3. apr. 2017 13:15 - 14:00, Niels Henrik Abels hus, room 801

Roxana Dumitrescu (King’s College, London) gives a lecture with the title: Game options in an imperfect market with default

Tid og sted: 3. apr. 2017 14:15 - 15:00, Niels Henrik Abels hus, room 801

Nacira Agram (University of Oslo) gives a lecture with the title: A Hida-Malliavin white noise calculus approach to optimal control

Tid og sted: 6. apr. 2017 14:15 - 16:00, B638, NH Abels hus
Tid og sted: 24. apr. 2017 13:15 - 14:00, Niels Henrik Abels hus, room 801

Achref Bachouch (Universitetet i Oslo) gives a lecture with the title: Numerical probabilistic method for Semi-linear Stochastic PDEs using Backward Doubly SDEs.

Tid og sted: 27. apr. 2017 10:00 - 28. apr. 2017 14:00, Niels Henrik Abels building

The second Scandinavian Gathering Around Remarkable Discrete Mathematics

Tid og sted: 27. apr. 2017 13:15 - 14:00, Niels Henrik Abels hus, room 107

Lluís Quer-Sardanyons (Universitat Autònoma de Barcelona) gives a lecture with the title: The Hyperbolic Anderson Model with rough noise in space

Tid og sted: 7. aug. 2017 - 11. aug. 2017, Svolvær, Lofoten

The Abel symposium 2017

Tidligere

Tid: 28. mars 2017 14:15

Nicola Lunardon (Department of Economics, Management and Statistics, University of Milano-Bicocca) will give a seminar in the lunch area, 8th floor Niels Henrik Abels hus at 14:15.

Tid og sted: 27. mars 2017 13:15 - 14:00, Niels Henrik Abels hus, room 801

Paul Krühner (TU Wien) gives a lecture with the title: On the Brownian limit order book dynamics

Tid og sted: 23. mars 2017 15:00 - 16:00, B638, NH Abels hus
Tid og sted: 21. mars 2017 14:15 - 15:00, Niels Henrik Abels hus, room UE26

Jocelyne Bion-Nadal (Ecole Polytechnique) gives a lecture with the title: Feynman Kac formula for differential operators with path-dependent coefficients

Tid og sted: 21. mars 2017 13:15 - 14:00, Niels Henrik Abels hus, room UE26

Florentina Paraschiv (Norges teknisk-naturvitenskapelige universitet) gives a lecture with the title: Estimation and Application of Fully Parametric Multifactor Quantile Regression with Dynamic Coefficients

Tid og sted: 16. mars 2017 14:15 - 16:00, B638, NH Abels hus
Tid og sted: 15. mars 2017 14:15 - 16:00, B 738

In the 80's Bökstedt introduced THH(A), the Topological Hochschild homology of a ring A, and a trace map from algebraic K-theory of A to THH(A). This trace map, along with the circle action on THH, have since been used extensively to make calculations of algebraic K-theory. When the ring A has an anti-involution Hesselholt and Madsen have promoted the spectrum K(A) to a genuine Z/2-spectrum whose fixed points is the K-theory of Hermitian forms over A. They also introduced Real topological Hochschild homology THR(A), which is a genuine equivariant refinement of THH, and Dotto constructed an equivariant refinement of Bökstedt's trace map. I will report on recent joint work with Dotto, Patchkoria and Reeh on models for the spectrum THR(A) and calculations of its RO(Z/2)-graded homotopy groups. 

Tid og sted: 15. mars 2017 10:15 - 12:00, NHA 738

Adam Sørensen (Oslo) will give a talk with title: Overlapping qubits

Abstract: I will discuss the paper "Overlapping Qubits" by Chao, Reichardt, Sutherland, and Vidick (arXiv:1701.01062 - category: Quantum Physics!). Qubits are the bits of quantum computing. In the paper the authors take the point of view that a qubit mathematically is described by a pair of anticommuting reflections on a finite dimensional Hilbert space. Two qubits are independent if their defining operators commute. The central point of the paper is that when performing observations we should not expect two qubits to be exactly independent, rather we should expect them to be almost independent, i.e. the norms of the commutators should be small. This naturally leads to questions about almost commuting matrices, which is why I care. I will attempt to explain how questions of almost commuting matrices come up, and how the physicists answer them.  

Tid og sted: 10. mars 2017 11:15 - 12:00, Niels Henrik Abels hus, room UE32

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

Tid og sted: 10. mars 2017 11:15 - 12:00, NHA 935

Large Eddy Simulation of the interaction of water waves with turbulent air flow

Tid og sted: 10. mars 2017 10:15 - 11:00, Niels Henrik Abels hus, room UE32

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

Tid: 7. mars 2017 14:15

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. 

Tid og sted: 2. mars 2017 11:15 - 12:00, 801
Tid: 28. feb. 2017 14:15

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.

Tid og sted: 22. feb. 2017 14:15 - 16:00, B 738

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.

Tid og sted: 22. feb. 2017 12:15 - 14:00, B 637

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.

Tid og sted: 16. feb. 2017 14:15 - 16:00, B638, NH Abels hus