During the week from the 24.08 to the 28.08.2015 I participated at a conference **Symplectic Techniques in Topology and Dynamics 2015 **at the **University of Cologne**. The areas the speakers have talked about were widely spread in the field of symplectic geometry starting for example with the -body problem by Andreas Knauf which is very closely related to application and going to Counterexample by Tolman, which is more on the pure side of math. Over all the whole conference was very inspiring and very good organized. Much thanks for this to Prof. Dr. H. Geiges, Prof. Dr. S. Sabatini and Dr. Kunze. Since I am not an expert in these topics and completely new to the field I could not follow my initial thought of writing a little sum up for every talk. Instead I will just present the titles of all the talkes.

Participating in this conference was very fruitful for me since I realized that this is an area which I want to focus more on! Also I could get in touch with famous persons like Susan Tolman, which are and have been very successful in the area of symplectic geometry.

**D****ay 1 - 24.08.2015**

**The Flashka transformation as a moment map** - Tudor S. Ratiu - EPF Lausanne

**New techniques in the -body problem - **Andreas Knauf - Universität Erlangen-Nürnberg

**Contact open books with exotic pages - **Burak Özbağcı - Koç University Istanbul

**Non-loose transverse knots - **Sinem Onaran - Hacettepe Üniversitesi Ankara

**Day 2 - 25.08.2015**

**Polygons, Hyperpolygons and beyond - **Leonor Godino - IST Lisboa

**Integrable systems in the semiclassical limit - **Álvaro Pelayo - UC San Diego

**Point vortex dynamics - **Thomas Bartsch - Universität Gießen

**A variational approach to colliding solutions in celestial mechanics - **Susanna Terracini - Università di Torino

**Day 3 - 26.08.2015**

**Non-existence of intermediate symplectic capacities and shadows - **Felix Schlenk - Université de Neuchâtel

**The homotopy type of the space of contact structures on certain 3-manifolds - **Yuri Chekanov - Independent University Moskau

**Day 4 - 27.08.2015**

**Dynamics of a ping-pong model - **Rafael Ortega - Universidad de Granada

**Conformal symplectic systems - **Rafael de la Llave - Georgia Institute of Technology

**On unbounded motions of the -body problem - **Jacques Féjoz - Université Paris-Dauphine

**The most classical way of being Hamiltonian in two different ways - **Alain Albouy - IMCCE Paris

**Day 5 - 28.08.2015**

**Magnetic two-spheres -** Kai Zehmisch - WWU Münster

**Non-Hamiltonian action with isolated fixed points - **Susan Tolman - University of Illinois at Urbana-Champaign

**Non-avoided crossings for -body balanced configuartion in near a central configuration - **Alain Chenciner - IMCCE Paris & Université Paris 7