Matematiikan ja systeemianalyysin laitos

Ajankohtaista

Esitelmiä, seminaareja ja väitöksiä

* Seuraavan viikon tapahtumat merkitty tähdellä

Vesa Kaarnioja
Higher order QMC rules for uncertainty quantification using periodic random variables
* Today * Friday 26 April 2019,   13:00,   M3 (M234)
A popular model for the parametrization of random fields in uncertainty quantification is given by the so-called affine model, where the input random field is assumed to depend on uniformly distributed random variables in a linear manner. In this talk, we consider a different -- yet equally valid -- model for the input random field, where the random variables enter the input field as periodic functions instead. The field can be constructed to have the same mean and covariance function as the affine random field. This setting allows us to construct simple lattice QMC rules that obtain higher order convergence rates, which we apply to elliptic PDEs equipped with random coefficients. This is a joint work with Frances Kuo and Ian Sloan.

Dissertation
Matias Heikkilä
On Multivariate Extremes
* Monday 29 April 2019,   13:00,   M1 (M232)
Further information
Filosofian maisteri Matias Heikkilä väittelee maanantaina 29.4.2019 klo 13 Aalto-yliopiston perustieteiden korkeakoulussa salissa M1, Otakaari 1, Espoo. Väitöskirjassa “On Multivariate Extremes” tutkittiin harvinaisten ilmiöiden ennustamista. Väitöstilaisuuden vastaväittäjänä toimii Assist. Prof. Anna Kiriliouk, University of Namur. Kustoksena toimii professori Pauliina Ilmonen matematiikan ja systeemianalyysin laitokselta. Väitöstiedote Perustieteiden korkeakoulun verkkosivuilla: https://www.aalto.fi/fi/tapahtumat/vaitos-matematiikan-alalta-fm-matias-heikkila

Prof Thomas Banchoff (Brown University)
Meeting Salvador Dali in the Fourth Dimension
* Thursday 02 May 2019,   15:15,   Aalto hall
Abstract: How did Salvador Dali choose an unfolded four-dimensional cross as the central figure in one of his most famous religious paintings? This talk will describe a ten-year series of meetings with the artist starting in 1975 and a survey of forty years of developments in computer graphics approaches to phenomena in four and higher dimensions.
Mathematics and Arts Colloquium

Dissertation
MA Taneli Luotoniemi
Hyperspatial Interlace. Grasping Four-dimensional Geometry Through Crafted Models
Friday 03 May 2019,   12:00,   A1 hall, Otakaari 1X
Further information
Opponents: KuT, dos. Jyrki Siukonen, University of the Arts Helsinki and PhD, Prof. Thomas Banchoff, Brown University, USA Custos: Prof. Helena Sederholm

Dr Augusto Gerolin (VU Amsterdam)
An optimal transportation approach for the Schrödinger bridge problem and convergence of the Sinkhorn algorithm
Monday 06 May 2019,   15:15,   M3 (M234)
Aalto Stochastics & Statistics Seminar

Ida Keskimäki
Tason symmetriat (kandiesitelmä)
Tuesday 07 May 2019,   16:15,   M3 (M234)

Nicolas Dietrich (University of Salzburg)
Compactness results for parabolic problems
Thursday 09 May 2019,   14:15,   M2 (M233)
Seminar on analysis and geometry

Giovanni Comi (Scuola Normale Superiore di Pisa)
TBA
Wednesday 15 May 2019,   12:15,   M3 (M234)
Seminar on analysis and geometry

MSc Hoa Ngo (Aalto U)
TBA
Monday 20 May 2019,   15:15,   M3 (M234)
Aalto Stochastics & Statistics Seminar

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