Singulier
Responsables
Groupe
Fréquence
Hebdomadaire
Jour-Horaires
Jeudi, 11h-12h
Lieu
FRUMAM, St Charles (accès)
Réservation salle
Contacts
- andre-ricardo.belotto-da-silva_at_univ-amu.fr
- anne.pichon_at_univ-amu.fr
Le GdT Singulier a été créé pour discuter des développements en théorie des singularités.
Les prochains groupes de travail
Semi-analytic points of a subanalytic variety: revisiting two theorems of Pawlucki
Octave CURMI
It is now a classical result that when projecting a (real or complex) algebraic set, one will obtain a semialgebraic set, that is, a set [...]
Characterizing the geometric monodromy group of an isolated plane curve singularity
Pablo PORTILLA
In this talk we will explain an intrinsic characterisation of the geometric monodromy group of an isolated plane curve singularity as the stabiliser in the [...]
Thom-Mather singularity theory of frontals
Raul OSET SINHA
We define frontal deformations, unfoldings, stability and codimension. The main difference with Ishikawa's theory of integral mappings is that we define and calculate in the [...]
Algebraic models of the line in the real affine plane
Frédéric MANGOLTE
We study the following real version of the famous Abhyankar-Moh Theorem: Which real rational map from the affine line to the affine plane, whose real [...]
On approximation of maps into real algebraic homogeneous spaces
Wojciech KUCHARZ
I will talk about a joint paper with Jacek Bochnak containing an appendix written by János Kollár. Let X be a real algebraic variety and [...]
Bounded motivic integral and motivic Milnor fiber
Arthur FOREY
Building on ideas of Hrushovski and Loeser, I will present a new motivic integration morphism, the bounded integral, that interpolates Hrushovski and Kazhdan’s integrals with [...]
Eigenspace Decomposition of Mixed Hodge Structures on Alexander Modules
Eva ELDUQUE
In previous joint work with Geske, Herradón Cueto, Maxim and Wang, we constructed a mixed Hodge structure (MHS) on the torsion part of Alexander modules, [...]
Deformations of solutions of differential equations
Mercedes HAIECH
Given an algebraic differential equation (or system) we can be interested in the geometrical object defined by the set of its solutions. In algebraic geometry, [...]
Invariants of generic and relatively generic normal surface singularities
János NAGY
We provide combinatorial/topological formula for invariants of a complex analytic normal surface singularity whenever the analytic structure on the fixed topological type is generic. We [...]
09
Déc
Computing cohomology of contact loci
Eduardo de LORENZO POZA
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 [...]
Mu-constant families and simultaneous embedded resolutions
Hussein MOURTADA
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 [...]
Tropical obstructions to stable rationality
Johannes NICAISE
It is an old and thorny problem in algebraic geometry to determine which projective hypersurfaces are rational, or, more generally, stably rational, meaning that they [...]
Singularities arising from cluster algebras of finite type
Eleonore FABER
Cluster algebras were introducted by Fomin and Zelevinsky in the context of total positivity in Lie theory. Since then, cluster structures have appeared in many [...]
t2-stratifications
Pablo CUBIDES KOVACSICS
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. [...]
Newton transformations and motivic invariants at infinity of plane curves
Michel Raibaut
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
Janusz Adamus
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
Baldur Sigurðsson
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 [...]
A canonical stratification
Immanuel Halupczok
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 [...]
Newton transformations and motivic invariants at infinity of plane curves
Michel Raibaut
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 [...]
