100, rue des maths 38610 Gières / GPS : 45.193055, 5.772076 / Directeur : Louis Funar

Noémie Combe

Symmetries of modular genus zero operad
Lundi, 4 Novembre, 2019 - 14:00
Résumé : 
The profinite completion of the Grothendieck--Teichmüller group $\hat {GT}$ acts upon the operad of moduli spaces of stable curves of genus zero with marked points, whose n--ary component is $\bar{M}_{0,n+1}$ for $n \geq 3$. Here, we study various aspects of this action. We investigate  the (stacky) operad, defined by a fundamental involution in $\hat{GT}$ and combinatorial aspects of the total action. 
Institution de l'orateur : 
Thème de recherche : 
Algèbre et géométries
Salle : 
logo uga logo cnrs