Matematiikan ja systeemianalyysin laitos

Ajankohtaista

Esitelmiä, seminaareja ja väitöksiä

* Seuraavan viikon tapahtumat merkitty tähdellä

Emil Sköldberg
The homologies of monomial ideals and incidence algebras.
* Wednesday 25 October 2017,   15:15,   M2 (M233)
Given a set of monomials M ={m_1, ..., m_r} in a polynomial ring, one can form the set L of all least common multiples of subsets of M. This set is a partially ordered set, (even a lattice) ordered by divisibility. It is known that the betti numbers of the ring S/(M) can be computed as the homology of the simplicial complex of L. In the talk, I will explain how this relationship can be lifted to hold on the level of resolutions, between modules over S on one hand, and modules over the incidence algebra of L on the other hand.
ANTA seminar

Prof. Roland Griesmaier (University of Wuerzburg)
Uncertainty principles for far field patterns and applications to inverse source problems
* Thursday 26 October 2017,   12:30,   M2 (M233)
Seminar on Applied Mathematics

Dissertation
Lauri Mustonen, Prof. Roland Griesmaier (Wuerzburg)
Approximations and surrogates for computational inverse boundary value problems
* Friday 27 October 2017,   12:00,   M1 (M232)

Prof. Lothar Nannen (TU Wien)
Numerical methods for resonance problems in open systems
Tuesday 31 October 2017,   15:00,   U1
Colloquim

David Radnell (Aalto University)
Model of the Teichmuller space of genus-zero bordered surfaces by period maps
Wednesday 01 November 2017,   12:15,   M3 (M234)
The classical period mapping takes compact Riemann surfaces of genus g into the Siegel upper half-plane, which consists of symmetric g x g matrices with positive definite imaginary part. It is a classical fact that this map is holomorphic. We generalize the period mapping to the case of the Teichmuller space of genus-zero surfaces with n closed non-overlapping disks removed and prove it is holomorphic. The period mapping takes the Teichmuller space of this type into the direct product of the Teichmuller space of genus-zero surfaces with n punctures and a space of bounded operators on an n-fold sum of Bergman spaces of the disk. The construction relies on a generalization of the classical Grunsky operator, new extension and reflection results on quasidisks, as well as a coordinate system for the infinite-dimensional Teichmuller space inspired by conformal field theory. This talk will introduce these results which are joint work with Eric Schippers and Wolfgang Staubach. Background notions will be explained and technical details will be hidden.
Seminar on analysis and geometry

Laura Venieri (University of Helsinki)
TBA
Wednesday 08 November 2017,   12:15,   M3 (M234)
Seminar on analysis and geometry

Matias Vestberg (Aalto)
TBA
Friday 10 November 2017,   14:15,   Kumpula Exactum C124
Harmonic analysis and PDE seminar

Alessandro Mancuso (Aalto University)
Bayesian approach for safety barrier optimization
Tuesday 14 November 2017,   11:15,   M205

Alessandro Mancuso
TBA
Tuesday 14 November 2017,   11:15,   M205
Doctoral student talk / Engström

M.Sc. Edoardo Tosoni
Safety assessment of nuclear waste repositories
Tuesday 14 November 2017,   11:30,   M205

Edoardo Tosoni
TBA
Tuesday 14 November 2017,   11:40,   M205
Doctoral student talk / Engström

Vilma Virasjoki
Decision Models of Energy Markets for Investment and Policy Analysis
Tuesday 14 November 2017,   12:15,   M205
Doctoral student talk / Engström

Lauri Hitruhin (University of Helsinki)
TBA
Wednesday 15 November 2017,   12:15,   M3 (M234)
Seminar on analysis and geometry

Prof. Kari Astala (Helsinki University, Aalto University)
TBA
Tuesday 28 November 2017,   15:00,   U1
Colloquim

Matias Heikkilä
On multivariate separating Hill estimator under estimated location and scatter
Tuesday 12 December 2017,   11:15,   M205

Joona Karjalainen
Moment-based parameter estimation in random intersection graphs
Tuesday 12 December 2017,   11:40,   M205
Doctoral student talk / Engström

Alex Karrila
Uniform spanning trees, scaling limits, and conformal invariance
Tuesday 12 December 2017,   12:15,   M205
Doctoral student talk / Engström

Jouni Parkkonen (University of Jyväskylä)
TBA
Wednesday 24 January 2018,   12:15,   M3 (M234)
Seminar on analysis and geometry

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