Math Calendar

Monday, September 25, 2017
11:00-11:45
HFG 610
Stochastics Seminar
Pieter Trapman (Stockholm) - End of an SIR epidemic on a configuration model network
Abstract: We consider an SIR (Susceptible-Infective-Recovered) epidemic on a static (configuration model) random graph. We describe the final stages of the epidemic and analyse the time until extinction of the epidemic. Furthermore, we consider the effect of control measures, such as vaccination on the duration of the epidemic. The analysis heavily relies on theory on branching processes.

We show that the epidemic is always exponentially declining in the final stages, even if the degree distribution of the network has infinite variance. We also show that control measures, although decreasing the size of the epidemic, might well increase the duration of the epidemic, which might have serious public health and economic implications.

Joint work with Ana Serafimovic and Abid Ali Lashari
Tuesday, September 26, 2017
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
HFG610
Seminar Geometry and Analysis
Emmanuel Opshtein (IRMA Strasbourg) - C^0 rigidity of Lagrangian submanifolds
Classical symplectic geometry deals with those applications that preserve a differential structures given by a certain 2-form. Eliashberg-Gromov discovered however that a diffeomorphism that is a C^0-limit of symplectic diffeomorphisms is itself symplectic. As a result, the C^0-closure of the symplectic group in the Homeomorphism group of a manifold gives an interesting object. We are led to a natural question: which objects are of interest in this "C^0-symplectic geometry" ? In this talk, I will discuss the relevance of Lagrangian submanifolds (which are the most famous objects in classical symplectic geometry) in this C^0-symplectic geometry. We will see that these submanifolds enjoy very strong robustness with respect to these C^0-limits.
Thursday, September 28, 2017
16:00-17:00
HFG 611
Complex Systems Seminar
Benjamin Sanderse (CWI) - TBA
Title:
Abstract:
Friday, September 29, 2017
11:00-12:00
BBG 175
Master seminar Scientific Computing
Hanna Liu - Stochastic Ensemble Kalman Filter
12:00-13:00
BBG 175
Master seminar Scientific Computing
Kilian Bakker - Square Root Ensemble Kalman Filter
Tuesday, October 3, 2017
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
HFG 611
Geometry and Algebra
Yalong Cao (Oxford) - TBA
TBA
Tuesday, October 10, 2017
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
HFG610
Seminar Geometry and Analysis - Andres Pedroza (Universidad de Colima)
Lagrangian submanifolds in the one-point blow up of CP^2
We will show how a Lagrangian submanifold in CP^2 that is Hamiltonian isotopic to RP^2, lifts to a Lagrangian submanifold in the symplectic one-point blow up of CP^2 such that is no longer Hamiltonian isotopic to the lift of RP^2. We show this by computing the Lagrangian Floer homology of the pair of Lagrangian submanifolds in the symplectic blow up in terms of the Lagrangian Floer homology of the pair in CP^2.
Thursday, October 12, 2017
16:00-17:00
HFG 611
Complex Systems Seminar
Karoline Wiesner (Bristol) - TBA
Title:
Abstract:
Monday, October 16, 2017
16:15-17:15
Academiegebouw
PhD defense
Han Zhou - Numerical approximation of time-fractional differential equations
Tuesday, October 17, 2017
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
HFG 611
Geometry and Algebra
Nezhla Aghaei (Hamburg) - t.b.a.
Thursday, October 19, 2017
14:00-17:45
HFG611
Workshop - Higher Geometric Structures along the Lower Rhine
See for site: http://www.projects.science.uu.nl/Moerdijk/HigherLower%202017%20home%202.htm
And for the program: http://www.projects.science.uu.nl/Moerdijk/Higher%20Lower%20progr.%202017.pdf


Friday, October 20, 2017
09:45-16:45
HFG611
Workshop - Higher Geometric Structures along the Lower Rhine
Program, see http://www.projects.science.uu.nl/Moerdijk/
Tuesday, October 24, 2017
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
HFG610
Seminar Geometry and Analysis
Richard Siefring (Universitaet Bochum) - tba
tba
Tuesday, October 31, 2017
12:00-13:00
HFG Library
Bring Your Own Lunch (BYOL)
13:15-14:00
HFG
SIAM Student Chapter talk
Steven Kaptein (TU/e) - tba
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
HFG 611
Geometry and Algebra
Diletta Martinelli (Imperial College) - t.b.a.
Thursday, November 2, 2017
15:30-16:30
KBG Cosmos
The Utrecht Mathematical Colloquium
Jacob Lurie (Harvard) - TBA
Tuesday, November 7, 2017
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
HFG610
Seminar Geometry and Analysis
Sobhan Seyfaddini (Paris) - tba
tba
Thursday, November 9, 2017
16:00-17:00
HFG 611
Complex Systems Seminar
KaYin Leung (Stockholm) - TBA
Title:
Abstract:
Tuesday, November 14, 2017
13:15-14:00
HFG
SIAM Student Chapter talk
Joris Kattemölle (CWI and UVA) - Quantum Computer
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
HFG 610
Geometry and Algebra
Joerg Bruedern (Universitaet Goettingen) - tba
Thursday, November 16, 2017
15:30-16:30
location: Ruppert Paars
The Utrecht Mathematical Colloquium
Jörg Brüdern (Göttingen) - TBA
Tuesday, November 21, 2017
12:00-13:00
HFG Library
Untitled eventBring Your Own Lunch (BYOL)
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
HFG 610
Seminar Geometry and Analysis
Jean Gutt (Universitaet zu Koeln) - tba
tba
Tuesday, November 28, 2017
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
HFG 610
Geometry and Algebra
Chloe Martindale (Technische Universiteit Eindhoven) - tba
Thursday, November 30, 2017
16:00-17:00
HFG 611
Complex Systems Seminar
Odo Diekmann (UU) - TBA
Title:
Abstract:
Tuesday, December 5, 2017
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
Seminar Geometry and Analysis - tba
tba
Tuesday, December 12, 2017
15:30-16:00
HFG Library
Institute Tea
Thursday, December 14, 2017
16:00-17:00
HFG 611
Complex Systems Seminar
Jan Bouwe van den Berg (VU) - TBA
Title:
Abstract:
Tuesday, December 19, 2017
12:00-13:00
HFG Library
Bring Your Own Lunch (BYOL)
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
Seminar Geometry and Analysis - tba
tba
Tuesday, December 26, 2017
15:30-16:00
HFG Library
Institute Tea
Tuesday, January 2, 2018
15:30-16:00
HFG Library
Institute Tea
Tuesday, January 9, 2018
15:30-16:00
HFG Library
Institute Tea
Tuesday, January 16, 2018
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
Seminar Geometry and Analysis - tba
tba
Tuesday, January 23, 2018
12:00-13:00
HFG Library
Bring Your Own Lunch (BYOL)
15:30-16:00
HFG Library
Institute Tea
Thursday, January 25, 2018
16:00-17:00
HFG 611
Complex Systems Seminar
Isabelle Schneider (Berlin) - TBA
Title:
Abstract:
Tuesday, January 30, 2018
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
Seminar Geometry and Analysis - tba
tba
Tuesday, February 6, 2018
15:30-16:00
HFG Library
Institute Tea
Tuesday, February 13, 2018
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
Seminar Geometry and Analysis - tba
tba
Tuesday, February 20, 2018
12:00-13:00
HFG Library
Bring Your Own Lunch (BYOL)
15:30-16:00
HFG Library
Institute Tea
Tuesday, February 27, 2018
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
Seminar Geometry and Analysis - tba
tba
Tuesday, March 6, 2018
15:30-16:00
HFG Library
Institute Tea
Tuesday, March 13, 2018
15:30-16:00
HFG Library
Institute Tea
16:00-17:00
Seminar Geometry and Analysis - tba
tba
Tuesday, March 20, 2018
12:00-13:00
HFG Library
Bring Your Own Lunch (BYOL)
15:30-16:00
HFG Library
Institute Tea