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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 : 
MPIM
Thème de recherche : 
Algèbre et géométries
Salle : 
4
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