Séminaire marseillais de théorie des singularités

Marseille singularity seminar

CONTACT: guillaume.rond@univ-amu.fr

The seminar takes place every Thursday at 2pm (French time)

People interested to attend the talks should contact the organizers in order to get acces to the Zoom meetings.

Thursday 2nd December, 2-3 pm

Speaker: Hussein MOURTADA (Paris)

Title: Mu-constant families and simultaneous embedded resolutions

Abstract: We will show that a mu constant family of isolated singularities (here, mu stands for the Milnor number) which is Newton non-degenerate admits a simultaneous embedded resolution. We also will mention how this result gives a new approach of the so called mu-constant problem which predicts that in a mu-constant family, the topological type is invariant; this problem is open (only) in dimension 2 (families of surfaces).

All the notions in the above abstract will be introduced and illustrated with examples.

This is a joint work with Maximiliano Leyton-Alvarez and Mark Spivakovsky.

Thursday 9th December, 2-3 pm

Speaker: Eduardo de LORENZO (Bilbao)

Title: Computing cohomology of contact loci

Abstract: Contact loci are singularity invariants related to jet and arc spaces and the Milnor fiber. Several of their additive properties are known by using motivic integration. However, very little is known about the non-additive properties of these objects, such as their cohomology. In this talk we will present some work-in-progress techniques to compute the cohomology of contact loci, and apply these techniques to the case of plane curves with one Puiseux pair.

Thursday 16th December, 2-3 pm

Speaker: Janos NAGY (Budapest)

Title: TBA

Abstract: TBA

Thursday 6th January, 2-3 pm

Speaker: Mercedes HAIECH (Limoges)

Title: TBA

Abstract: TBA

Thursday 13th January, 2-3 pm

Speaker: Eva ELDUQUE (Madrid)

Title: TBA

Abstract: TBA

Thursday 20th January, 2-3 pm

Speaker: Arthur FOREY (Lausanne)

Title: TBA

Abstract: TBA

Thursday 27th January, 2-3 pm

Speaker: Wojciech KUCHARZ (Krakow)

Title: TBA

Abstract: TBA

Thursday 3rd February, 2-3 pm

Speaker: Frédéric MANGOLTE (Marseille)

Title: TBA

Abstract: TBA

Thursday 24th February, 2-3 pm

Speaker: Jean-Baptiste CAMPESATO (Angers)

Title: TBA

Abstract: TBA