Location: Snellius building, room 312, unless mentioned otherwise (map and directions).
Time: 16:00 to 17:00, unless mentioned otherwise.
Schedule 2010-2012: here.

Spring 2014

23/6/2014
(Mon)
Sn412(?)
10:30-17:15
10:30-11:15
11:30-12:15
13:30-14:15
14:30-15:15
15:30-16:15
16:30-17:15
Masters thesis presentations
Niels uit de Bos: Deriving general (non-additive) functors
Raymond van Bommel: Almost all hyperelliptic Jacobians have a bad semi-abelian prime
Giulio Orecchia: Torsion-free rank one sheaves on a semi-stable curve
Rosa Winter: Concurrent exceptional curves on del Pezzo surfaces of degree one
Andrea Pasquali: Representations of SL2 and GL2 in defining characteristic
Riccardo Ferrario: Galois closures for monogenic degree-4 extensions of rings
2/6/2014
(Mon)
16:00-17:00 Dijana Kreso (Graz)
Rational function decomposition and Diophantine equations
26/5/2014
(Mon)
16:00-17:00 Ziyang Gao (Orsay/Leiden)
The Ax-Lindemann theorem for the universal family of abelian varieties
22/5/2014
(Thu)
11:00-12:00
Sn 412?
Daniel Loughran (Hannover)
Good reduction of complete intersections
19/5/2014
(Mon)
17:00-18:00 Jon Gonzalez Sanchez (Bilbao)
From p-groups to pro-p groups and back
19/5/2014
(Mon)
15:45-16:45 Mima Stanojkovski (Leiden)
Evolving groups and intensity
14/4/2014
(Mon)
16:00-17:00 Rostislav Devyatov (Berlin-Leiden)
Equivariant infinitesimal deformations of a special class of three-dimensional T-varieties
8/4/2014
(Tue)
14:15-16:00
Sn 412
Jan Bouw (Leiden)
An algorithm to compute norm residue symbols
24/3/2014
(Mon)
16:00-17:00 Niels Lindner (Berlin-Leiden)
Density of quasismooth hypersurfaces in simplicial toric varieties
17/3/2014
(Mon)
16:00-17:00 Giulia Battiston (Berlin-Leiden)
The monodromy of stratified bundles in positive characteristic
10/3/2014
(Mon)
16:00-17:00 Owen Biesel (Leiden)
A New Definition of Discriminant Algebra
6/3/2014
(Thu)
16:00-17:00 Elmar Grosse Klönne (Berlin)
A partial generalization of Colmez' functor
3/3/2014
(Mon)
16:00-17:00 Dirk Basson (Leiden)
Drinfeld modular forms of higher rank
10/2/2014
(Mon)
16:00-17:00 José Ignacio Burgos Gil (Madrid)
The singularities of the invariant metric of the sheaf of Jacobi forms on the universal elliptic curve.

Fall 2013

25/11/2013
(Mon)
16:00-17:00 Rachel Newton (Bonn)
Computing transcendental Brauer groups of products of CM elliptic curves
21/11/2013
(Thu)
16:00-17:00
Sn 312
Guillermo Mantilla (Lausanne)
Weak arithmetic equivalence of number fields
18/11/2013
(Mon)
16:00-17:00
B03
Ekaterina Amerik (Moscow, Paris)
Some remarks about the dynamical Hasse principle
11/11/2013
(Mon)
16:00-17:00 Sorina Ionica (Paris)
Isogeny graphs with real multiplication
4/11/2013
(Mon)
16:00-17:00 Marco Streng (Leiden)
Computing endomorphism rings of abelian varieties using class groups (joint work with Gaetan Bisson)
24/10/2013
(Thu)
15:45-16:45
Sn 312
Gabor Wiese (Luxembourg)
On Galois representations and the Inverse Galois Problem
14/10/2013
(Mon)
16:00-17:00 Markus Perling (Bielefeld)
Exceptional collections on (rational) surfaces
7/10/2013
(Mon)
16:00-17:00 David Holmes (Leiden)
Rational points on Kummer varieties and ranks of elliptic curves
19/9/2013
(Thu)
11:00-12:00 (!)
Sn B3
Martin Bright (Beirut)
Brauer groups of singular del Pezzo surfaces
16/9/2013
(Mon)
16:00-17:00 Tzanko Matev (Bayreuth)
Algebraic dependencies of the multiplicative group

Spring 2013

18/2/2013
(Mon)
16:00-17:00 David Holmes (Leiden)
Distribution of rational points on Kummer varieties
4/3/2013
(Mon)
16:00-17:00 Owen Biesel (Princeton)
G-closures for ring extensions
7/3/2013 16:00-17:00 Cecília Salgado (Universidade Federal do Rio de Janeiro)
Unirationality of del Pezzo surfaces of degree two
14/3/2013 16:00-17:00 Alex Bartel (Warwick University)
The difference between rational representations and permutation representations of a finite group
18/3/2013
(Mon)
16:00-17:00 Hendrik Lenstra (Leiden)
Lattices with symmetry, I
21/3/2013 15:45-17:30 Hendrik Lenstra (Leiden)
Lattices with symmetry, II
25/3/2013
(Mon)
16:00-17:00 Jan Steffen Müller (Hamburg)
Canonical heights on Jacobians of hyperelliptic curves
28/3/2013 16:00-17:00 No seminar, but colloquium

11/4/2013 16:00-17:00 No seminar, but colloquium

18/4/2013 16:00-17:00 No seminar, but colloquium

8/5/2013
(Wed)
16:00-17:00 Kloosterman lecture

13/5/2013
(Mon)
16:00-18:00
16:00-16:50
17:10-18:00
Algant pre-defense (Duong Hoang Dung defends his PhD thesis on May 14)
Andrea Lucchini (Padova): Boundedly generated subgroups of finite groups
Christopher Voll (Bielefeld): Zeta functions of groups and rings
16/5/2013 16:00-17:00 Paloma Bengoechea (Collège de France)
From quadratic polynomials and continued fractions to modular forms
25/6/2013
(Tue)
Sn 402
13:45-14:45
15:15-16:15
16:30-17:30
Olivier Wittenberg (ENS Paris, CNRS) On the cycle class map for zero-cycles over local fields
Jinbi Jin (Leiden): Classification of torsors over curves
David Madore (ENST Paris): Church-Turing computability of étale cohomology
26/6/2013
(Wed)
Sn 402
15:00-17:15 Bhargav Bhatt (IAS Princeton)
Crystalline and de Rham cohomology 1 & 2
3/7/2013
(Wed)
Sn 402
15:00-17:15 Bhargav Bhatt (IAS Princeton)
Crystalline and de Rham cohomology 3 & 4
4/7/2013 16:00-17:00 Wei Ho (Columbia)
Families of lattice-polarized K3 surfaces