Séminaires : Géométrie énumérative

Equipe(s) : aa,
Responsables :Penka Georgieva, Ilia Itenberg.
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Description

Orateur(s) Grigory Mikhalkin - Université de Genève,
Titre Separating semigroup of real curves and other questions from a 1-dimensional version of Hilbert's 16th problem
Date28/11/2019
Horaire15:15 à 16:15
Résume

Kummer and Shaw have introduced the separating semigroup Sep(S) of a real curve S. The semigroup is made of topological multidegrees of totally real algebraic maps from S to the Riemann sphere and can be considered in the context of a 1-dimensional version of Hilbert's 16th problem. We'll explore this point of view and classify Sep(S) for curves of genera up to four.

Salle15-25-502
AdresseJussieu
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