|Responsables :||Penka Georgieva, Ilia Itenberg.|
|Email des responsables :|
|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|
|Horaire||15:15 à 16:15|
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.