Geometry and Quantum Theory (GQT)


1 January 2015

Events 2015

Monday afternoon with lectures on Special Functions
November 30th, 2015

13:45-14:30 Noud Aldenhoven (Radboud Universiteit) Explicit matrix inverses involving continuous q-ultraspherical polynomials and quantum groups
15:00-15:45 Tom Koornwinder (Universiteit van Amsterdam) Solutions of the system of pde’s voor Appell F_2 and their integral representations (partially following Olsson and Diekema)
16:00-16:45 Mourad Ismail (University of Central Florida & King Saud University) Rogers-Ramanujan Identities
Location: HG00.310, Huygensgebouw, FNWI
Radboud Universiteit, Nijmegen

You are all cordially invited!

A dinner in downtown Nijmegen is planned, please email E. Koelink if you plan to join.

Moduli spaces and Arithmetic Geometry: celebrating “FO80”
November 12th, 2015
On Thursday, November 12, there will be a special afternoon to celebrate the 80th birthday of Frans Oort. There will be two lectures aimed at a broad audience of mathematicians. We are very honored to have

Aise Johan de Jong (Columbia University, New York) and Don Zagier (MPI Bonn and ICTP Trieste)
as speakers this afternoon. Everyone interested is cordially invited, but if you wish to attend, please register at
The afternoon will be concluded with a reception.
The talks are given in the De Sitterzaal (ground floor Oort building, Niels Bohrweg 2, Leiden)
14:00 — 15:00 Aise Johan de Jong (title TBA)
15:00 — 15:30 coffee break
15:30 — 16:30 Don Zagier (title TBA)
16:30 — 18:00 reception in front of the De Sitterzaal
This special afternoon is part of the Lorentz workshop ‘Moduli spaces and Arithmetic Geometry’ that is held from 9 till 13 November.
Due to an overwhelming interest in this workshop, it is no longer possible to register as a participant, though it is possible to attend individual lectures.

GQT graduate school and colloquium
October 26th, 2015

GQT School

Stefan Behrens and Ralph Klaasse — Four-manifolds

Oliver Fabert — Floer theory

Erik Koelink — Quantum groups

GQT colloquium

Speakers for the colloquium include: Martijn Caspers, Kenny de Commer, Kim Froyshov, Peter Hochs, Vicky Hoskins

Mini-Workshop on Symplectic Geometry
October 7th, 2015

Higher Geometric Structures along the Lower Rhine VI
September 24th, 2015

Higher Geometric Structures along the Lower Rhine VI will take place in Van der Valk Hotel De Bilt/Utrecht on September 24-26.
Matija Basic
Yael Fregier
Benoit Fresse
Vladimir Hinich
João Nuno Mestre
Steffen Sagave
Cornelia Vizman
Yannick Voglaire
Marco Zambon

Student Seminar: Albebraic Geometry and Homotopy theory
September 1st, 2015

Workshop “Geometric Invariants and Spectral Curves”
June 1st, 2015
On June 1-5 there is a workshop “Geometric Invariants and Spectral Curves” at the Lorentz Center, Leiden. Part of this workshop is specially targeted for PhD students. Everybody is welcome!


Workshop on mathematical physics
May 26th, 2015
On May 26-28 there is a workshop on mathematical physics at the University of Amsterdam. Everybody is welcome!

Geometry Seminar
April 28th, 2015

Mini-Workshop on Symplectic Geometry, Universiteit Utrecht
March 12th, 2015

This mini-workshop is aimed at researchers, Ph.D. students, and advanced master’s students working in symplectic geometry and related areas. It is organized jointly with the Vrije Universiteit Amsterdam.

This is the first instance of what we plan to make a biannual tradition. The goal of these mini-workshops is to strengthen the symplectic community of the Netherlands and to connect it with abroad. Topics will include Hamiltonian dynamics, the symplectic embedding question, holomorphic curves, and Floer homology.

Kai Cieliebak (Universität Augsburg)
Felix Schlenk (Université de Neuchâtel)
Rob van der Vorst (Vrije Universiteit Amsterdam)
Frol Zapolski (University of Haifa)

Oliver Fabert (Vrije Universiteit Amsterdam)
Fabian Ziltener (Universiteit Utrecht)

For any questions please contact Oliver Fabert at o.fabert “at” and Fabian Ziltener at f.ziltener “at” .

This mini-workshop is supported by the Universiteit Utrecht, the Vrije Universiteit Amsterdam, and the Geometry and Quantum Theory Cluster.

Workshop on Algebraic Geometry
February 13th, 2015