Math Calendar

Monday, December 9, 2019
15:30-16:30
BBG069
Master thesis defense
Mireia Martínez I Sellarès - From Logic to Mathematical Logic; on the History of Logic in the 19th Century
You are allcordially invited to the presentation of my master's thesis, titled'From Logic to Mathematical Logic: on the History of Logic in the 19thCentury' and written under the supervision of dr. Gerard Alberts (UvA). My UU-supervisor is dr. Viktor Blåsjö and my second readeris dr. Jaap van Oosten.





Mathematical logic was born in the nineteenth century,according to the standard narrative. This birth has commonly been explained asan instance of emergence, marked by the publication in 1879 of Gottlob Frege's Begriffsschrift.This narrative was established in the 1960s and has since been criticized by anumber of authors. In this talk we will outline this standard narrative,explain some of its weak points, and show the evidence presented against them.We will then suggest an alternative interpretation which describes the changesin nineteenth century logic as four threads or lines of transformation.



No knowledge of present-day mathematical logic is required.
Tuesday, December 10, 2019
12:00-13:00
Bring Your Own Lunch meeting (MI library)
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
Masha Vlasenko (Polish Academy of Sciences) - Hodge structures and differential operators
Classical methods allow one to construct solutions of a linear
differential equation near a regular singularity using power series
and the logarithm function. In the talk I will explain the link
between these classical solutions and the limiting mixed Hodge
structure defined in 1970's by Deligne and Schmid.
I will then speak about higher Apéry's constants discovered recently
by Golyshev and Zagier. In a joint work with Spencer Bloch we apply
the idea from the first part of this talk to study these numbers.
Thursday, December 12, 2019
15:30-16:30
KBG Pangea
The Utrecht Mathematical Colloquium
Chris Budd (University of Bath) - Non-smooth models in the Geosciences

In this talk Iwill show how models of both geology and climate lead tonon-smooth dynamical systems. I will show how the theory of such systemscan then be used to help explain such diverse problems as rockfolding and the behaviour of the ice ages.

Tuesday, December 17, 2019
15:30-16:00
HFG Library
Institute Tea
Thursday, December 19, 2019
14:00-15:00
Drift 25
Master Seminar
Jurriaan Parie- Performance of Sampling Methods on Deterministic Bayesian Networks
Tuesday, January 7, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
Drew Johnson (ETH Zürich) - t.b.a.
Thursday, January 9, 2020
16:00-17:00
Applied Mathematics Seminar
Marleen Balvert (Universiteit Tilburg) - TBA, HFG 409
Tuesday, January 14, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
Ivan Beschastnyi (Sorbonne) - Symplectic methods in optimisation problems
Abstract: The goal of this talk will be to convince the audience that the language of symplectic geometry is the most natural language for the study of minimisation problems. We will revise some basic tools from classical calculus of variations such as the Lagrange multiplier rule and Jacobi fields, explain their symplectic meaning and how those notions can be extended to a much more general setting.
Thursday, January 16, 2020
16:00-17:00
Applied Mathematics Seminar
Karoline Disser (WIAS Berlin) - TBA, HFG 409
Tuesday, January 21, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
t.b.a. - t.b.a.
Thursday, January 23, 2020
16:00-17:00
Applied Mathematics Seminar
Rob Bisseling (UU) - Parallel Tomographic Reconstruction - Where Combinatorics Meets Geometry, HFG 409
Tuesday, January 28, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
Lior Bary-Soroker (Tel Aviv University) - t.b.a.
Thursday, January 30, 2020
15:30-16:30
MIN 201
The Utrecht Mathematical Colloquium
Lior Bary-Soroker (Tel Aviv) - Virtually all polynomials are irreducible
Abstract: It has been known for almost a hundred years that most polynomials with large integral coefficients are irreducible and have a big Galois group. For a few dozen years, people have been interested in whether the same holds when one considers families of polynomials with small coefficients—notably, polynomials with plus-minus 1 coefficients. In particular, “some guy on the street” conjectures that the probability for a random plus-minus 1 coefficient polynomial to be irreducible tends to 1 as the degree tends to infinity (a much earlier conjecture of Odlyzko-Poonen is about the 0-1 coefficients model). In the talk, I will discuss these types of problems, and approach to attack them using combination of combinatorics, analytic number theory, random permutations, and number theory in function fields.
Tuesday, February 4, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
Job Kuit (Universität Paderborn) - t.b.a.
Thursday, February 6, 2020
16:00-17:00
Applied Mathematics Seminar
Jeremy Budd (TU Delft) - Allen-Cahn and MBO on graphs, HFG 611
Title: Allen-Cahn and MBO on graphs

Abstract: An emerging technique in clustering, segmentation and classification problems is to consider the dynamics of flows defined on finite graphs. In particular Bertozzi and co-authors considered dynamics related to Allen-Cahn flow (Bertozzi, Flenner, 2012) and the MBO algorithm (Merkurjev, Kostic, Bertozzi, 2013) for this purpose.
This talk will exhibit our recent work showing rigorous links between these two flows, explaining why MBO can be used as an alternative to Allen-Cahn.
Tuesday, February 11, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
TBA
Utrecht Geometry Center Seminar
Drew Johnson (ETH Zürich) - t.b.a.
Thursday, February 13, 2020
16:00-17:00
Applied Mathematics Seminar
Guus Regts (UvA) - TBA, HFG 611
Tuesday, February 18, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
Victoria Cantoral Farfán (KU Leuven) - t.b.a.
Thursday, February 20, 2020
16:00-17:00
Applied Mathematics Seminar
Stefanie Sonner (Radboud Universiteit) - TBA, HFG 611
Tuesday, February 25, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
t.b.a. - t.b.a.
Thursday, February 27, 2020
16:00-17:00
Applied Mathematics Seminar
Agnes Lamacz (University of Duisburg-Essen) - TBA, HFG 611
Tuesday, March 3, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
t.b.a. - t.b.a.
Thursday, March 5, 2020
16:00-17:00
Applied Mathematics Seminar
Sjoerd Dirksen (UU) - TBA, HFG 611
Tuesday, March 10, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
t.b.a. - t.b.a.
Tuesday, March 17, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
t.b.a. - t.b.a.
Thursday, March 19, 2020
16:00-17:00
Applied Mathematics Seminar
Verena Schamboeck (UvA) - TBA, HFG 611
Tuesday, March 24, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
t.b.a. - t.b.a.
Thursday, March 26, 2020
16:00-17:00
Applied Mathematics Seminar
Yves van Gennip (TU Delft) - TBA, HFG 611
Tuesday, March 31, 2020
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
MIN 014
Utrecht Geometry Center Seminar
t.b.a. - t.b.a.
Tuesday, April 7, 2020
15:30-16:00
HFG Library
Institute Tea
Tuesday, April 14, 2020
15:30-16:00
HFG Library
Institute Tea
Thursday, April 16, 2020
16:00-17:00
Applied Mathematics Seminar
Thang Huynh (RWTH Aachen University) - TBA, HFG 611
Tuesday, April 21, 2020
15:30-16:00
HFG Library
Institute Tea
Tuesday, April 28, 2020
15:30-16:00
HFG Library
Institute Tea
Tuesday, May 5, 2020
15:30-16:00
HFG Library
Institute Tea
Tuesday, May 12, 2020
15:30-16:00
HFG Library
Institute Tea
Tuesday, May 19, 2020
15:30-16:00
HFG Library
Institute Tea
Tuesday, May 26, 2020
15:30-16:00
HFG Library
Institute Tea
Tuesday, June 2, 2020
15:30-16:00
HFG Library
Institute Tea