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

22 May

Événements passés

t2-stratifications

t2-stratifications

Pablo CUBIDES KOVACSICS (Universität Düsseldorf)

07/10/2021    
14h00 - 15h00
Stratifications are a classical tool to study singularities of real and complex algebraic varieties. Working in a larger field extension equipped with a valuation, I. [...]
05 Oct

Promotions via les postes 46.3

GdT PL (FRUMAM, St Charles, Marseille)

Il sera notamment question de la possible utilisation de postes 46.3. Ce dernier point fait écho à une proposition récente de l'UFR sciences concernant les [...]
24 Sep

Algorithme de pavage

Ilya Galanov (I2M)

24/09/2021    
14h00 - 17h00
suite du Teich
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)

16/09/2021    
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 [...]
Recent developments in arc-analytic geometry

Recent developments in arc-analytic geometry

Janusz Adamus (Western University, London, Ontario, Canada)

24/06/2021    
14h00 - 15h00
The elegant theory of arc-analytic functions and arc-symmetric sets was founded by Kurdyka in the late 80's, and later expanded by Bierstone and Milman, Parusinski, [...]
Newton nondegenerate Weil divisors in toric varieties

Newton nondegenerate Weil divisors in toric varieties

Baldur Sigurðsson (UNAM in Cuernavaca, Mexico)

17/06/2021    
14h00 - 15h00
We introduce Newton nondegenerate Weil divisors in toric affine varieties and present formulas for their geometric genus, canonical divisors, and provide conditions on their Newton [...]
15 Jun

Transport branché et formation de réseaux en biologie

Romain Hug et Antonin Monteil (...)

15/06/2021    
14h00 - 15h00
Petite introduction au transport branché et liens avec les modèles biologiques proposés dans les deux papiers Haskovec, J. ; Markowich, P. ; Perthame B. ; [...]
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 Jun

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 May

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 Apr

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 Apr

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 [...]
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