- Post-doc positionsOct 4, 2017 to Dec 1, 2017
*Henri Lebesgue Center offers post-doc positions for researchers in mathematics.*### Description

The Lebesgue Center and its partners, Région Bretagne & Région Pays de la Loire (DéfiMaths project), are opening applications for three post-doctoral positions in mathematics for a period of 2*12 months. The hired applicant will conduct his/her research at one of these Insitutes:

Irmar of Rennes

LMJL of Nantes

LMBA of Brest and Vannes

LAREMA of AngersThe positions are open to all research areas present within the four Institutes. They do not include an obligation to teach.

The net salary will be 2 100 Euros per month.

### Deadlines

**The application is open.***Sending application: between the 4th of October 2017 and the 1st of December 2017.**The positions are expected to begin on September 1st or October 1st, 2018.*### Eligibility

Candidates must have completed a PhD in mathematics, or equivalent, at the date of taking office. The candidate must submit an original research project including a collaboration with one or more local researcher (s) of Irmar, LMJL,LMBA, or LAREMA.

Applicants must complete the online form where they have to join the following documents:

• CV describing the candidate's profile and professional experience (list of publications, research topics, activities)

• Cover letter including the research project

• At least two letters of recommendation, including one from the local researcher involved in the projectFor more information, please contact us at post-doctorant[at]lebesgue.fr.

### Selection

The selection is carried by the Lebesgue Scientific Committee.

### Nominees

- Complex dynamics and quasi-conformal geometryOct 23, 2017 to Oct 25, 2017
Our colleague Tan Lei passed away in April 2016. A conference will be held from 23/10/2017 to 25/10/2017 at the University of Angers to honour her memory.

### Scientific Committee

Etienne Ghys (ENS Lyon)

John Milnor (Stony Brook)

Mitsuhiro Shishikura (Kyoto).### Organizing Committee

Mohammed El Amrani (Angers)

Michel Granger(Angers)

Jean-Jacques Loeb(Angers)

Laurent Meersseman(Angers)

Pascale Roesch(Toulouse).### Provisional list of speakers

Xavier Buff, Arnaud Cheritat, Nuria Fagella (to be confirmed), Cui Guizhen,Peter Haissinski, John Hamal Hubbard (to be confirmed), Carsten lunde Petersen, Kevin Pilgrim, Mary Rees, Pascale Roesh, Hans Henrik Rugh, Dylan Thurston, Mitsu Shishikura, Giulio Tiozzo.

*More information*: page**The registration process is already open.** - 5 minutes LebesgueOct 24, 2017
Les vidéos des exposés seront mises en ligne quelques jours après l'exposé. Vidéothèque

## Prochain exposé (rediffusion):

*24-10-2017*:**Vincent Colin***Comment mesurer la forme d'un espace ?*Comment construire des espaces exotiques aux propriétés surprenantes et comment, par des expériences locales, en deviner la forme ? On se laissera guider par Henri Poincaré.

### Lieu

Rennes

## Exposés à venir:

*07-11-2017*:**Éric Hazane***21-11-2017*:**Marine Fontaine***28-11-2017*:**Roger Lewandowski***05-12-2017*:**Maria Cumplido***19-12-2017*:**Guy Casale***06-02-2018*:**Rozenn Texier-Picard** - Séminaire QuimpériodiqueNov 16, 2017 to Nov 17, 2017
Ce séminaire de géométrie, complètement à l'Ouest, réunit à Quimper, trois fois l'an, pour deux journées, le jeudi et le vendredi, des géomètres venus des régions Bretagne et Pays de Loire.

### Programme

Sorin Dumitrescu (Univ. Nice):

*Géométries de Cartan branchées*

Clément Fromenteau (LAREMA):*Sur le champ de Teichmüller des surfaces de Hopf*

Ngoc-Phu Ha (LMBA Vannes):*Invariants quantiques associés à la super-algèbre de Lie sl(2|1)*

Harold Rosenberg (IMPA):*The geometry and topology of complete minimal surfaces and applications*

Caroline Vernier (LMJL):*Théorèmes de recollement en géométrie Kählérienne*### Correspondants

Guillaume Deschamps, LMBA, Brest

Laurent Meersseman, LAREMA, Angers

Gaël Meigniez, LMBA, Vannes

Yann Rollin, LMJL, Nantes

Frédéric Touzet, IRMAR, Rennes### Historique

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- School - Masterclass 2017Dec 19, 2017 to Dec 21, 2017
Angers, from December 19th to December 21st

*Organization board*: Etienne MannWe organize a masterclass in Angers, from 19th to 21st of December, 2017. Lectures will be in the morning sessions. We will have two parallel sessions:

- Etienne Mann :
**Introduction to algebraic stacks**

We will introduce the notion of fibered category, Grothendieck topology and stacks. We will illustrate these notions on simple examples. These lectures are for Master (or PhD) students who had followed a introduction to algebraic geometry that is algebraic varieties and sheaves. - Loic Chaumont:
**Application of the matrix-tree-theorem**

The organisation board will pay the housing and the lunch. The other meals are not payed by the organizers. For the travel expenses, we will do our best in the limit of our budget.

Date limite d'inscription 15 novembre.

- Etienne Mann :
- Workshop - Numerical methods for algebraic curvesFeb 19, 2018 to Feb 23, 2018
Rennes, from February 19th to February 23rd

*Organization board*: Xavier Caruso, David Lubicz, Christophe Ritzenthaler, Marie-Françoise RoyThis workshop will bring together researchers in complex and real algebraic geometry and applied mathematics (physics and cryptography) to discuss numerical methods and open problems on algebraic curves. There will be a number of introductory talks to each of the following topics and invited lectures from specialists: - Theoretical physics/DPE - Computations with the Jacobian - Random real topology - Complexity of computing topology of real algebraic curves - p-adic methods and applications to cryptography

- Conference - Mathematics and Entreprises DaysApr 12, 2018 to Apr 13, 2018
Vannes, from April 12th to April 13th

*Organization board*: Christophe Berthon, Eric Darrigrand, Emmanuel Frénod, Fabrice Mahé, Loïc Chaumont - School - Fundamentals and practice of finite elementsApr 16, 2018 to Apr 20, 2018
Roscoff, from April 16th to April 20th

*Organization board*: Martin Costabel, Eric Darrigrand, Monique Dauge, Yvon Lafranche*Scientific board*: Monique Dauge (Univ. Rennes 1), Ilaria Perugia (TU Wien)