Department of Mathematics and Systems Analysis

Current

Lectures, seminars and dissertations

* Dates within the next 7 days are marked by a star.

Pekka Lehtelä (Aalto)
Obstacle problem for the porous medium equation
* Friday 23 February 2018,   14:15,   Kumpula Exactum C124
Harmonic analysis and PDE seminar

Nick Lindemulder (TU Delft)
A randomized difference norm for vector-valued Bessel potential spaces
* Friday 23 February 2018,   15:15,   Kumpula Exactum C124
In this talk we discuss a randomized difference norm characterization for Bessel potential spaces in the UMD Banach space-valued setting. The main ingredients are R-boundedness results for Fourier multiplier operators, which are of independent interest. As an application we characterize the pointwise multiplier property of the indicator function of the half-space on these spaces. All results are proved in the setting of weighted spaces
Harmonic analysis and PDE seminar

Acadamy Research Fellow Kaisa Matomäki (University of Turku)
Correlations of arithmetic functions
* Tuesday 27 February 2018,   15:15,   D
Important arithmetic functions include the von Mangoldt function $\Lambda(n)$ which is essentially a weighted characteristic function of the primes, and the Liouville function $\lambda(n)$ which is $-1$ or $+1$ depending on whether $n$ has an odd or even number of prime factors. Mean values of these functions have been known for more than a century and in both cases the asymptotic evaluation of the mean value is equivalent to the prime number theorem which says that the number of primes up to $x$ is $x/\log x$. Much more difficult question is whether there is correlation between consecutive values of $\lambda(n)$ or between $\Lambda(n)$ and $\Lambda(n+2)$. Such questions are closely related to the notoriously difficult twin prime conjecture which claims that there are infinitely many primes $p$ such that $p+2$ is also prime. Though the twin prime conjecture is still a distant goal, there has been some recent progress on this sort of correlations which I will discuss.
Colloquim

Pekka Alestalo (Aalto University)
Extension of bilipschitz maps: A survey
* Wednesday 28 February 2018,   12:15,   M3 (M234)
Seminar on analysis and geometry

Sebastian Schwarzacher (University of Bonn)
TBA
Wednesday 07 March 2018,   12:15,   M3 (M234)
Seminar on analysis and geometry

Ilmari Kangasniemi (University of Helsinki)
TBA
Wednesday 14 March 2018,   12:15,   M3 (M234)
Seminar on analysis and geometry

Teaching meeting
Tuesday 20 March 2018,   14:15,   Coffee room

Sylvester Eriksson-Bique (UCLA)
TBA
Wednesday 21 March 2018,   12:15,   M3 (M234)
Seminar on analysis and geometry

TBA
TBA
Friday 23 March 2018,   14:15,   M3 (M234)
Harmonic analysis and PDE seminar

Antti Vähäkangas (Jyväskylä)
TBA
Friday 23 March 2018,   15:15,   M3 (M234)
Harmonic analysis and PDE seminar

Prof. Heikki Haario (Lappeenranta University of Technology)
TBA
Tuesday 27 March 2018,   15:15,   D
Colloquim

Augusto Gerolin (University of Jyväskylä)
Optimal Transport meets Density Functional Theory
Wednesday 28 March 2018,   12:15,   M3 (M234)
Seminar on analysis and geometry

Amal Attouchi (University of Jyväskylä)
Qualitative properties of viscosity solutions of a degenerate or singular parabolic equation in non-divergence form.
Wednesday 11 April 2018,   12:15,   M3 (M234)
Seminar on analysis and geometry

Prof. Peter Lindqvist (Norwegian University of Science and Technology)
TBA
Tuesday 24 April 2018,   15:15,   D
Colloquim

Departmental meeting
Tuesday 29 May 2018,   14:15,   Coffee room

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