## Visiting address

Ullevål StadionSognsveien 77B

0855 OSLO

Norway

Time and place:
May 12, 2017 11:15 AM - 12:00 PM,
NHA bygget 9 etg B91

Study of the air-flow very close to the surface of wind-generated water waves Marseille large air-water facility

Time and place:
May 11, 2017 12:45 PM - 1:45 PM,
Abels utsikt 12. floor

Time and place:
May 11, 2017 10:15 AM - 12:00 PM,
VB, Auditorium 4

This is the first of two lectures by Anders Hansen (Cambridge Univ. and UiO) on Foundational Computational Problems in l^1 and Total Variation Regularisation.

Time and place:
May 10, 2017 2:15 PM - 4:00 PM,
B 738

Topological cyclic homology is a variant of negative cyclic homology which was introduced by Bökstedt, Hsiang and Madsen. They invented topological cyclic homology to study algebraic K-theory but in recent years it has become more and more important as an invariant in its own right. We present a new formula for topological cyclic homology and give an entirely model independent construction. If time permits we explain consequences and further directions.

Time and place:
May 9, 2017 2:15 PM - 4:00 PM,
VB, Auditorium 4

This is the second of two lectures by Anders Hansen (Cambridge Univ. and UiO) on Compressed sensing - Structure and Imaging.

Time:
May 9, 2017 2:15 PM

Willi Sauerbrei (Institute for Medical Biometry and Statistics, University of Freiburg) will give a seminar in the lunch area, 8th floor Niels Henrik Abels hus at 14:15.

Time and place:
May 8, 2017 12:15 PM - 2:00 PM,
VB, Auditorium 2

This is the first of two lectures by Anders Hansen (Cambridge Univ. and UiO) on Compressed sensing - Structure and Imaging.

Time and place:
May 5, 2017 12:45 PM - 1:45 PM,
Rest area 7. floor

Time and place:
May 3, 2017 2:15 PM - 4:00 PM,
B 738

Joint work with Bjørn I. Dundas. We prove that algebraic K-theory, topological Hochschild homology and topological cyclic homology satisfy cubical and cosimplicial descent at connective structured ring spectra along 1-connected maps of such ring spectra.

Time and place:
Apr. 28, 2017 11:15 AM - 12:00 PM,
NHA bygget 9 etg B91

**Activity at IFE Wind Energy: numerical modeling of offshore wind turbines**

IFE (Institutt for Energiteknikk) is a research center located in Kjeller. The wind group at IFE mainly works with the development and analysis of new cost effective concepts for offshore wind energy, both concerning innovative rotor designs and new concepts for substructures. The group main investigation tool is the in-house software 3DFloat, an aero-elastic code which can simulate the whole wind turbine structure when exposed to the associated environmental loads (wind loads, hydrodynamic loads, soil loads if bottom-fixed).

In the presentation, an insight into the wave kinematics and wave loads modeling tools that are currently included in 3DFloat will be provided.

Time and place:
Apr. 27, 2017 1:15 PM - 2:00 PM,
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

Time and place:
Apr. 27, 2017 10:00 AM -
Apr. 28, 2017 2:00 PM,
Niels Henrik Abels building

The second Scandinavian Gathering Around Remarkable Discrete Mathematics

Time and place:
Apr. 26, 2017 2:15 PM - 4:00 PM,
B 738

In this talk all spaces and spectra will be localised at 2. Many E-infinity ring spectra turn out to be `finitely generated' in the sense that there is finite CW spectrum and a map from the free E-infinity ring spectrum generated by it inducing an epimorphism in mod 2 homology. This turns out to be an interesting condition and I will discuss some examples such as HZ, kO, kU, tmf and tmf_1(3). One long term goal of this work is to produce `ultra-generalised Brown-Gitler spectra' and I will discuss this idea if there is time.

Time:
Apr. 25, 2017 2:15 PM

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

Time and place:
Apr. 24, 2017 1:15 PM - 2:00 PM,
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.

Time and place:
Apr. 21, 2017 11:15 AM - 12:00 PM,
NHA bygget 9 etg B91

**Bioprocessing of marine and agricultural by-products**

Time and place:
Apr. 6, 2017 2:15 PM - 4:00 PM,
B638, NH Abels hus

Time and place:
Apr. 6, 2017 1:15 PM,
Undervisningsrom 108, Niels Henrik Abels hus

M.Sc. Johanna Ridder ved Matematisk institutt vil forsvare sin avhandling for graden ph.d.:

**Finite Difference Methods for Nonlinear Evolution Equations: Convergence Proofs and Applications to Liquid Crystals**

Time and place:
Apr. 6, 2017 10:15 AM,
Undervisningsrom 108, Niels Henrik Abels hus

M.Sc. Johanna Ridder ved Matematisk institutt avholder prøveforelesning over oppgitt emne: "Theory and numerics of conservation laws with nonlocal flux functions".

Time and place:
Apr. 3, 2017 2:15 PM - 4:00 PM,
B 637

Given a knot K in the 3-sphere, we use Heegaard Floer correction terms to give lower bounds on the first Betti number of (orientable and non-orientable) surfaces in the 4-ball with boundary K. An amusing feature of the non-orientable bound is its superadditivity with respect to connected sums. This is joint work with Marco Marengon. If time permits, I will discuss relations with deformations of singularities of curves (joint work with József Bodnár and Daniele Celoria).

Time and place:
Apr. 3, 2017 2:15 PM - 3:00 PM,
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

Time and place:
Apr. 3, 2017 1:15 PM - 2:00 PM,
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

Time and place:
Mar. 31, 2017 11:15 AM - 12:00 PM,
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.

Time:
Mar. 28, 2017 2:15 PM

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.

Time and place:
Mar. 27, 2017 1:15 PM - 2:00 PM,
Niels Henrik Abels hus, room 801

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