
Villarceau circles at Musée de l'Oeuvre NotreDame, Strasbourg Photo: Michèle Audin 
(*) The Mathematics department consists of two buildings: the Main building and the IRMA building. Lectures will take place in the Main
building of the Mathematics Department.
Thursday morning: registration, coffee and free discussions 
IRMA building, ground floor.
Thursday afternoon: Grand Amphithéâtre (GAM, Main building).
Banquet: Restaurant
de la Bourse, 1 place du Maréchal De Lattre
De Tassigny (place de la Bourse), 67000 Strasbourg. Tel. (+33) (0)3 88 36 40 53
Friday: Petit Aphithéâtre (PAM, Main building).
Saturday: Grand Amphithéâtre (GAM, Main building).
(practical infos to find your way there are
posted at this link)
Miguel Abreu: Toric KählerSasaki geometry in actionangle coordinates
In the same way that a contact manifold determines and is
determined by a symplectic cone, a Sasaki manifold determines
and is determined by a Kähler cone. KählerSasaki geometry
is the geometry of such a pair.
In this talk, after a brief introduction, I will present
the BurnsGuilleminLerman and MartelliSparksYau generalization
to toric KählerSasaki geometry of the actionangle coordinates
approach to toric Kähler geometry. I will then show how this
approach can be used to relate a recent new family of SasakiEinstein
metrics constructed by GauntlettMartelliSparksWaldram in 2004,
to an old family of extremal Kähler metrics constructed by Calabi
in 1982.
Peter Albers: Leafwise intersections and Rabinowitz Floer homology
This is joint work with Urs Frauenfelder. We address the leafwise intersection problem for hypersurfaces of restricted contact type. This problem originates from work of Moser in 1978. We show how critical points of a perturbed Rabinowitz action functional give rise to a solution of this problem. From this we derive existence results for Hofersmall Hamiltonian diffeomorphism. If the Rabinowitz Floer homology does not vanish we obtain existence results for general Hamiltonian diffeomorphisms.
Baptiste Chantraine: Nonsymmetry of Lagrangian concordance
After giving the definition of two new relations on the set of Legendrian knots up to isotopy, namely Lagrangian cobordism and Lagrangian concordance, we will show with the help of an explicit example that the latter is nonsymmetric.
Paolo Ghiggini: Giroux torsion, twisted coefficients and applications
The Giroux torsion of a contact 3manifold is a measure of how much the contact planes rotate in the neighbourhood of an embedded torus. After introducing the main properties of Heegaard Floer homology with twisted coefficients, I will describe how Giroux torsion influences the contact invariant in Heegaard Floer homology, and I will apply the result to the classification of tight contact structures on the boundary of the Gompf nuclei  Σ (2,3,6n1) for n>2.
Vincent Humilière: The Calabi invariant for some homeomorphisms
The Calabi invariant is an interesting group homomorphism defined on the Hamiltonian group of noncompact symplectic manifolds. Although this homomorphism is not continuous for C^{0} topology, we shall see that it can be extended to some groups of homeomorphisms, with the help of some symplectic rigidity results.
Ludmil Katzarkov: Superschemes homological mirror symmetry and applications
In this talk we will look at some clasical questions in algebraic geometry from a new perspective.
François Lalonde: On the group of Hamiltonian diffeomorphisms that preserve a Lagrangian submanifold: a relative Seidel morphism and the Albers map
Given a Lagrangian submanifold L in a symplectic manifold M, we define a relative Seidel morphism in the following way: to each path of Hamiltonian diffeomorphisms of M starting at the identity and ending at one preserving L, we assign an invertible element of the Floer homology of L. We show that this is compatible with the usual absolute Seidel morphism through the Albers map relating FH(M) and FH(L). This actually fits in two exact sequences, one at the level of homotopy groups of the relevant Hamiltonian diffeomorphisms, the other at the level of the various Floer homologies, the two sequences being related by the appropriate Seidel morphims. Joint work with Shengda Hu.
Gabriel Paternain: Symplectic topology of Mańé's critical values
Consider a closed Riemannian manifold
Francisco Presas: Nonfillability vs nonsqueezing in contact geometry
We review the constructions of nonfillable contact manifolds discovered in the last few years. We add a new one: GPS structures. Then, we relate them to the nonsqueezing results due to EliashbergKimPolterovich. In particular, we sketch a proof of the orderability of the overtwisted contact manifolds.
Jake Solomon: Real symmetry and mirror symmetry
András Stipsicz:
Combinatorial description of the
We show that every 3manifold admits a Heegaard
diagram in which a truncated version of Heegaard Floer homology
(when the holomorpic disks pass through the basepoints at most once)
can be computed combinatorially. The construction relies on the fact
that a closed 3manifold can be given as a triple branched cover
of