Localisation

Adresses

Aix-Marseille Université
Institut de Mathématiques de Marseille (I2M) - UMR 7373
Site Saint-Charles : 3 place Victor Hugo, Case 19, 13331 Marseille Cedex 3
Site Luminy : Campus de Luminy - Case 907 - 13288 Marseille Cedex 9

Les groupes de travail

Les prochains groupes de travail de l'I2M

19 Déc

Spectre de Heinis

Julien Cassaigne (I2M)

19/12/2025    
14h00 - 17h00
16 Jan
06 Fév
13 Mar

Subshift embedded in sofic shift / Contractible subshifts

Léo Poirier (I2M)

13/03/2026    
14h00 - 17h00
https://arxiv.org/abs/2401.16774
10 Avr
22 Mai

Événements passés

A canonical stratification

A canonical stratification

Immanuel Halupczok (Heinrich-Heine-Universität Düsseldorf)

10/06/2021    
14h00 - 15h00
A stratification of an algebraic set X ⊂ ℂ^n (or ℝ^n) is supposed to capture "how singular" the different points of X are: If x [...]
08 Juin

Quelques modèles et méthodes pour l'analyse de l'instabilité dynamique des microtubules. Part II

Christophe Gomez (I2M, Marseille)

08/06/2021    
14h00 - 15h00
Participer à la réunion Zoom https://univ-amu-fr.zoom.us/j/97207620584?pwd=dFo1K3IwVnBRNUY1emxYU1Z0cXhZQT09 ID de réunion : 972 0762 0584
Local class field theory

Local class field theory

Samuele Anni (I2M, Aix-Marseille Université)

TBA Références : Corps Locaux by Jean-Pierre Serre (CL) and Algebraïsche Zahlentheorie by Jurgen Neukirch (AZ) [su_spacer size="20"] Site web: https://sites.google.com/view/samuele-anni/home/groupe-de-travail Notes et exercices : https://amubox.univ-amu.fr/s/QCT6zmPrzY8aMCD [su_spacer [...]
25 Mai

Quelques modèles et méthodes pour l'analyse de l'instabilité dynamique des microtubules.

Christophe Gomez (I2M, Marseille)

25/05/2021    
14h00 - 15h00
Participer à la réunion Zoom https://univ-amu-fr.zoom.us/j/97207620584?pwd=dFo1K3IwVnBRNUY1emxYU1Z0cXhZQT09 ID de réunion : 972 0762 0584
Newton transformations and motivic invariants at infinity of plane curves

Newton transformations and motivic invariants at infinity of plane curves

Michel Raibaut (LAMA, Université Savoie Mont Blanc, Chambéry)

20/05/2021    
14h00 - 15h00
Let f be a complex polynomial with isolated singularities. In this talk, we will start by recalling classical formulas of the Euler characteristic of a [...]
Linearization of transseries and transserial maps in a neighborhood of a singular point

Linearization of transseries and transserial maps in a neighborhood of a singular point

Jean-Philippe Rolin (Institut de Mathématiques de Bourgogne, Dijon)

06/05/2021    
14h00 - 15h00
It is known since Schröder (1873) that in order to study the iterations of a function in the neighborhood of a fixed point (which can [...]
Bruce-Roberts numbers and the relative Saito's theorem

Bruce-Roberts numbers and the relative Saito's theorem

Maria Aparecida Soares Ruas (Universidade de São Paulo)

29/04/2021    
14h00 - 15h00
I will extend the notions of Milnor and Tjurina numbers of functions to the framework of Bruce-Roberts numbers, that is, to pairs formed by the [...]
Surface singularities and planar contact structures

Surface singularities and planar contact structures

Marco Golla (Laboratoire des mathématiques Jean Leray, Université de Nantes)

22/04/2021    
14h00 - 15h00
Planar contact 3-manifolds, those supported by an open book with genus-0 pages, are fairly special. The goal of the talk is to show that the [...]
15 Avr

Local Kronecker-Weber

Zoé Yvon (I2M, Aix-Marseille Université)

Local Kronecker-Weber (AZ) V.1 Références : Corps Locaux by Jean-Pierre Serre (CL) and Algebraïsche Zahlentheorie by Jurgen Neukirch (AZ) [su_spacer size="20"] Site web: https://sites.google.com/view/samuele-anni/home/groupe-de-travail Notes et [...]
Efroymson's Approximation Theorem for globally subanalytic  functions

Efroymson's Approximation Theorem for globally subanalytic functions

Anna Valette (Jagiellonian University, Kraków, Poland)

15/04/2021    
14h00 - 15h00
Efroymson's Approximation Theorem asserts that if f is a continuous semialgebraic mapping on a C^infinity semialgebraic submanifold M of ℝⁿ and if e : M→ℝ [...]
13 Avr

Reconstruction et étude du réseau de microtubules par imagerie de speckle

Philippe Roudot (I2M, Marseille)

13/04/2021    
14h00 - 15h00
La combinaison de nouvelles méthodes biochimiques, optiques et de traitement d'image permettent le suivie à haute résolution de la polymerization du cytosquelette et ouvre la [...]
Preordered groups and valued fields

Preordered groups and valued fields

Julie Decaup (IMT, Toulouse & UNAM, Cuernavaca)

08/04/2021    
14h00 - 15h00
In this talk, I will begin defining a valuation on a field. We will see that this defines a preorder on a group, and we [...]
Non-archimedean analogue of Wilkie's conjecture and point counting, from Pfaffian over subanalytic to Hensel minimal

Non-archimedean analogue of Wilkie's conjecture and point counting, from Pfaffian over subanalytic to Hensel minimal

Raf Cluckers (University of Lille, France and KU Leuven, Belgium)

01/04/2021    
14h00 - 15h00
Point counting on definable sets in non-archimedean settings has many faces. (All mimicking some aspects of point counting in o-minimal settings.) For sets living in [...]
01 Avr

Group cohomology and Galois cohomology II

David Kohel (I2M, Aix-Marseille Université)

Group cohomology and Galois cohomology Références : Corps Locaux by Jean-Pierre Serre (CL) and Algebraïsche Zahlentheorie by Jurgen Neukirch (AZ)     Site web: https://sites.google.com/view/samuele-anni/home/groupe-de-travail Notes [...]
30 Mar

Modélisation mathématique des interactions tumeurs-système immunitaire: phase d'équilibre et d'échappement

Kokou Kevin Atsou (CRCM, INRIA, Marseille)

30/03/2021    
14h00 - 15h00
Les récents succès de l’immunothérapie pour le traitement du cancer ont mis en évidence l’importance des interactions entre les cellules tumorales et les cellules immunitaires. [...]
Lipschitz normal embedded surfaces & polar exploration

Lipschitz normal embedded surfaces & polar exploration

Lorenzo Fantini (Goethe-Universität Frankfurt, Germany)

25/03/2021    
14h00 - 15h00
Lipschitz geometry is a branch of singularity theory that studies a complex analytic germ (X,0) in (C^n,0) by equipping it with either one of two [...]
25 Mar

Group cohomology and Galois cohomology I

Samuele Anni (I2M, Aix-Marseille Université)

Group cohomology and Galois cohomology Références : Corps Locaux by Jean-Pierre Serre (CL) and Algebraïsche Zahlentheorie by Jurgen Neukirch (AZ)   Join Zoom Meeting https://univ-amu-fr.zoom.us/j/94588287791?pwd=Slp6TllkbEswVEl5SGtrbVJxbFZkQT09 [...]
Boundary of the Milnor fiber of a non-isolated Newton non degenerate surface singularity

Boundary of the Milnor fiber of a non-isolated Newton non degenerate surface singularity

Octave Curmi (Institut de Mathématiques Alfréd Rényi, Budapest)

18/03/2021    
14h00 - 15h00
Milnor fibers play a crucial role in the study of the topology of a singularity of surface. They correspond to the different possible smoothings of [...]
Kummer theory

Kummer theory

Bastien Pacifico (I2M, Aix-Marseille Université)

Kummer theory (CL) X.3 and (AZ) IV.3 Références : Corps Locaux by Jean-Pierre Serre (CL) and Algebraïsche Zahlentheorie by Jurgen Neukirch (AZ) [su_spacer size="20"] Site [...]
The Hasse-Arf theorem II

The Hasse-Arf theorem II

Leonardo Colò (I2M, Aix-Marseille Université)

The Hasse-Arf theorem (CL) V.4 - V.7 and (AZ) V.6 Références : Corps Locaux by Jean-Pierre Serre (CL) and Algebraïsche Zahlentheorie by Jurgen Neukirch (AZ) [...]
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