**Swiss Doctoral Program in Mathematics**

**Spring School at Les Diablerets**

**7 - 12 March 2010**

**
Hotel les Sources,
Les Diablerets,
Switzerland
**

**New! Notes and references related to the talks.**

**Martin Bridson's Links**

Non-positive curvature and complexity for finitely presented groups

The quadratic isoperimetric inequality for mapping tori of free group automorphisms

There is only one gap in the isoperimetric spectrum

Snowflake groups, Perron-Frobenius eigenvalues, and isoperimetric spectra

**Olga Kharlampovich's Slides (I)**

**Olga Kharlampovich's Slides (II)**

**Organizers**

Tatiana Smirnova-Nagnibeda, University of Geneva (Tatiana.Smirnova-Nagnibeda@unige.ch);

**Opening Lecture**

**Invited Speakers**

Rostislav Grigorchuk (Texas A&M) | Alexei Miasnikov (McGill U.) | Martin Bridson (Oxford) |

Sarah Rees (Newcastle U.) | Ilya Kapovich (UIUC) | Francois Dahmani (U. Toulouse) |

Laurent Bartholdi (Göttingen) | Bettina Eick (TU Braunschweig) | Olga Kharlampovich (McGill U.) |

Denis Osin (Vanderbilt) | Volker Diekert (Stuttgart) | Patrick Dehornoy (Caen) |

**Preparatory lectures will take place in Fribourg on February 24.**

**Schedule**

The arrival day is Sunday, March 7. Dinner will be
served in the Hotel les Sources at about 7 p.m.

The scientific program begins on Monday, March 8, at 9 a.m.

The conference ends at lunchtime
on Friday, March 12.

There will be four lectures per day: three morning
lectures from 9 a.m. till noon, and one
afternoon lecture at 6 p.m.

Coffee and tea will be served at 9.50 a.m. in the conference center
and at 5 p.m. in the Hotel les Sources.

Lunch time is 12.15 (with a possibility to order a picnic: orders
have to be placed before 9 a.m. the same day). Dinner time is 7 p.m.

**Your stay**

Rooms have been booked for all participants at Hôtel les
Sources and Hotel le Chamois.

The talks take place in the conference center 5 minutes walk from the
hotels.

The price of accommodation and full board at the Hôtel Les
Sources
(to be paid at the conference site)

**for participants from EPFL, Uni-Fribourg, Uni-Genève, Uni-Neuchâtel,
Uni-Bern, Uni-Basel:**

in a double room: CHF 75 for the whole period

in a single room: CHF 150 for the whole period

**for other participants:**

in a double room: CHF 128 per person per night

in a single room: CHF 149 per person per night

**How to get there**

How to get to Les Diablerets

Swiss Railroad

You can view a smal map of the hotel surroundings, including the railway station in Les Diablerets and the conference center, under "Situation" on the hotel Les Sources website.

**Scientific Committee**

Tatiana Nagnibeda-Smirnova (Geneva)

Enric Ventura (Barcelona)

Armando Martino (Southampton)

Andrew Duncan (Newcastle)

**Supported by**

**Minicourses**

Martin Bridson (Oxford):* Groups with quadratic Dehn functions*

Alexei Miasnikov (McGill U.):* tba*

Denis Osin (Vanderbilt):* Filling in groups acting on hyperbolic spaces*

Sarah Rees (Newcastle):* The Word Problem in the Chomsky Hierarchy*

**Talks**

Laurent Bartholdi (Göttingen): *Automatically presented groups and algebras*

Francois Dahmani (U. Toulouse):* Hyperbolic geometry to solve instances of Dehn's third problem, the isomorphism problem*

Patrick Dehornoy (Caen):* Le probleme de mots pour les groupes de tresses*

Volker Diekert (Stuttgart):* On Computing Geodesics in Baumslag-Solitar Groups*

Bettina Eick (TU Braunschweig):* The classification of p-groups by coclass*

Rostislav Grigorchuk (Texas A&M):* Torsion images of Coxeter groups and the Wiegold problem*

Ilya Kapovich (UIUC):* Geometry of Out(F_n) and geodesic currents on free group*

Olga Kharlampovich (McGill U.):* Interesting examples of solvable groups*

Pierre de la Harpe (Geneva):* A propos de Max Dehn, de topologie et de théorie des groupes*